Get Breakdown assistance Guide for Mercedes C Class 4 Door 2023

Breakdown assistance

627

#

Open the safety vest bag 1 and pull out the

Emergency

Removing the safety vest

safety vest.

#

Replace: Fold up the safety vest, roll it up and

place it in the safety vest 1.

Slide the safety vest bag 1 along the lower

edge of the armrest into the safety vest com-

partment. Make sure that the loop 2 hangs

out so that it is easy to reach.

%

Remove the packaging ﬁlm before sliding it

into the safety vest compartment for a new

safety vest. Otherwise, it may cause uninten-

tional slipping or make removing diﬃcult.

Observe the legal requirements in the individ-

ual countries.

1

2

3

4

5

6

7

Maximum number of washes

Maximum wash temperature

Do not bleach

Do not iron

Do not tumble dry

Do not dry clean

Class 2 safety vest

The requirements deﬁned by the legal standard

are only fulﬁlled if the safety vest is the correct

size and is fully closed.

There is a high-visibility waistcoat compartment

on the door shelves of all doors for storing a high-

visibility waistcoat.

Replace the safety vest in the following cases:

#

To remove: pull out safety vest bag 1 by loop

R

The reﬂective strips are damaged or dirty

2.

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The maximum permissible number of washes

is exceeded

The ﬂuorescence property decreases, e.g. due

to permanent exposure to sunlight.

Warning triangle

▌Setting up the warning triangle

#

Fold the side reﬂectors upwards to form a tri-

angle and attach at the top using the upper

press-stud.

▌Removing the warning triangle

R

#

Fold the legs down and out to the side.

Dispose of the safety vest in an environmentally

friendly way:

First-aid kit (soꢀ sided) overview

R

Please contact your local waste disposal com-

pany.

#

Push both sides of the warning triangle holder

The ﬁrst-aid bag 1 is located on the leꢀ or right

side of the boot, depending on the vehicle ver-

sion.

1 toward the arrow and open it.

#

Remove the warning triangle 2.

The warning triangle is located in the boot lid.

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Breakdown assistance

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Removing the ﬁre extinguisher

Tyres without run-ﬂat characteristics:

#

Do not drive with a ﬂat tyre.

Change the ﬂat tyre immediately with an

emergency spare wheel or spare wheel.

Alternatively, consult a qualiﬁed special-

ist workshop.

&

WARNING Risk of accident due to an

incorrectly secured ﬁre extinguisher in the

driver's footwell

#

A ﬁre extinguisher may impede pedal travel or

block a depressed pedal.

This jeopardises the operating and road safety

of the vehicle.

The ﬁre extinguisher can be ﬂung around and

injure the driver or other vehicle occupants.

Tyres with run-ﬂat characteristics:

#

Observe the information and warning

notes on MOExtended tyres (run-ﬂat

#

Leꢀ-hand drive vehicle: pull tab 1 upwards.

Right-hand drive vehicle: pull tab 1 down-

wards.

tyres).

#

Always store and secure the ﬁre extin-

guisher in the bracket.

In the event of a ﬂat tyre, the following options are

available depending on your vehicle's equipment:

#

Remove ﬁre extinguisher 2.

#

Do not remove the ﬁre extinguisher while

driving.

R

Vehicles with MOExtended tyres: it is possible

to continue the journey for a short period of

time. Make sure you observe the notes on

MOExtended tyres (run-ﬂat tyres)

(/ page 630).

Flat tyre

Notes on ﬂat tyres

&

WARNING Risk of accident due to a ﬂat

tyre

R

Vehicles with a TIREFIT kit: you can seal the

tyre so that it is possible to continue the jour-

ney for a short period of time. To do this, use

the TIREFIT kit (/ page 631).

A ﬂat tyre severely aﬀects the driving charac-

teristics as well as the steering and braking of

the vehicle.

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Vehicles with Mercedes me connect: you can

make a call for breakdown assistance via the

overhead control panel in the case of a break-

down (/ page 568).

If a pressure loss warning message appears in the

driver's display, proceed as follows:

R

vehicle vibration

smoke which smells like rubber

continuous ESP^®intervention

cracks in the tyre sidewalls

R

Check the tyre for damage.

R

If driving on, observe the following notes.

R

All vehicles: change the wheel (/ page 662).

Driving distance possible in emergency mode

aꢀer the pressure loss warning:

#

Aꢀer driving in emergency mode, have

the rims checked by a qualiﬁed specialist

workshop with regard to their further

use.

The defective tyre must be replaced in

every case.

Notes on MOExtended tyres (run-ﬂat tyres)

Load condition

Driving distance possi-

ble in emergency mode

&

WARNING Risk of accident when driving in

limp-home mode

#

Partially laden

Fully laden

80 km

30 km

Driving in emergency mode impairs the han-

dling characteristics of the vehicle.

With MOExtended tyres (run-ﬂat tyres), you can

continue to drive your vehicle even if there is a

total loss of pressure in one or more tyres. How-

ever, the tyre aﬀected must not show any clearly

visible damage.

You can recognise MOExtended tyres by the

MOExtended marking which appears on the side

wall of the tyre.

Vehicles with tyre pressure monitoring system:

MOExtended tyres may only be used in conjunc-

tion with an activated tyre pressure monitoring

system.

#

Do not exceed the permissible maximum

The driving distance possible in emergency mode

may vary depending on the driving style. Observe

the maximum permissible speed of 80 km/h.

If a tyre has gone ﬂat and cannot be replaced with

an MOExtended tyre, you can use a standard tyre

as a temporary measure.

speed of the MOExtended tyres.

#

Avoid any abrupt steering and driving

manoeuvres as well as driving over

obstacles (kerbs, pot holes, oﬀ-road).

This applies, in particular, to a loaded

vehicle.

#

Stop driving in the emergency mode if

you notice:

banging noise

R

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TIREFIT kit storage location

Plug-in hybrid

Not plug-in hybrid

The tyre inﬂation compressor is maintenance-

free. If there is a malfunction, please contact

a qualiﬁed specialist workshop.

Using the TIREFIT kit

Requirements

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Tyre sealant bottle and tyre inﬂator compres-

sor are ready for use (/ page 61).

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TIREFIT sticker is present.

R

Gloves are present.

The TIREFIT kit 1 is located in the luggage com-

partment on the leꢀ as delivered.

Depending on the model, the TIREFIT kit may also

be located in other places in the boot.

TIREFIT kit storage location: (/ page 61)

The TIREFIT kit 1 is located in the luggage com-

partment on the leꢀ as delivered.

You can use TIREFIT tyre sealant to seal perfora-

tion damage of up to 4 mm, particularly those in

the tyre contact surface. You can use TIREFIT in

outside temperatures down to -20 °C.

%

Depending on the power category (LK), the

tyre inﬂation compressor weighs as follows:

&

WARNING Risk of accident when using

tyre sealant

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LK1 – 12 V/10 A, 120 W, 0.8 kg

R

LK2 – 12 V/15 A, 180 W, 0.9 kg

The tyre sealant may be unable to seal the

tyre properly, especially in the following cases:

You can ﬁnd information on the power cate-

gory (LK) and/or electrical data on the back

of the tyre inﬂation compressor.

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Have the tyre sealant bottle replaced in a qualiﬁed

specialist workshop every ﬁve years.

#

R

there are large cuts or punctures in the

tyre (larger than damage previously men-

tioned)

the wheel rims have been damaged

aꢀer journeys with very low tyre pressure

or with ﬂat tyres

If tyre sealant gets into your eyes, thor-

oughly rinse them using clean water

immediately.

If tyre sealant has been swallowed, thor-

oughly rinse out your mouth immediately

and drink plenty of water. Do not induce

vomiting and seek medical attention

immediately.

Change out of clothing which has come

into contact with tyre sealant immedi-

ately.

If an allergic reaction occurs, seek medi-

cal attention immediately.

#

Do not remove any foreign objects which have

entered the tyre.

R

#

Do not continue driving.

Consult a qualiﬁed specialist workshop.

#

&

WARNING Risk of injury and poisoning

from tyre sealant

Tyre sealant is hazardous to health and causes

irritation. Do not allow it to come into contact

with your skin, eyes or clothing, and do not

swallow it. Do not inhale any vapours. Keep

the tyre sealant away from children.

Observe the following if you come into contact

with the tyre sealant:

#

*

NOTE Overheating due to the tyre inﬂation

compressor running too long

Aﬃx part 1 of the TIREFIT sticker to the

instrument cluster within the driver's ﬁeld of

vision.

#

Do not run the tyre inﬂation compressor

for longer than ten minutes without inter-

ruption.

#

Aﬃx part 2 of the TIREFIT sticker near the

valve on the wheel with the defective tyre.

#

Rinse oﬀ the tyre sealant from your skin

using water immediately.

Comply with the manufacturer's safety notes on

the sticker on the tyre inﬂation compressor.

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Do not switch oﬀ the tyre inﬂation compressor

during this phase!

#

Let the tyre inﬂation compressor run for a

maximum of ten minutes.

The tyre should then have attained a tyre pres-

sure of at least 200 kPa (2.0 bar/29 psi).

If tyre sealant leaks out, make sure you clean the

aﬀected area as quickly as possible. It is prefera-

ble to use clean water.

If you get tyre sealant on your clothing, have it

cleaned as soon as possible with perchloroethy-

lene.

#

Remove the valve cap from valve 7 on the

faulty tyre.

#

Screw ﬁlling hose 8 onto valve 7.

Insert plug 4 into a 12‑V‑socket in your vehi-

cle.

Switch on the vehicle.

Press on and oﬀ switch 3 on the tyre inﬂa-

tion compressor.

If, aꢀer ten minutes, a tyre pressure of 200 kPa

(2.0 bar/29 psi) has not been attained:

#

Pull plug 4 with the cable and hose 5 out

of the tyre inﬂation compressor housing.

Push the plug of hose 5 into ﬂange 6 of

tyre sealant bottle 1 until the plug engages.

Place tyre sealant bottle 1 head downwards

into recess 2 of the tyre inﬂation compres-

sor.

Switch oﬀ the tyre inﬂation compressor.

#

Unscrew the ﬁlling hose from the valve of the

defective tyre.

The tyre inﬂation compressor is switched on.

The tyre is inﬂated. First, tyre sealant is pum-

ped into the tyre. The pressure may brieﬂy rise

to approximately 500 kPa (5 bar/73 psi).

Please note that tyre sealant may leak out when

unscrewing the ﬁlling hose.

#

Drive forwards or in reverse very slowly for

approximately 10 m.

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#

Pump up the tyre again.

#

Adapt your driving style accordingly and

drive carefully.

Do not exceed the maximum speed limit

with a tyre that has been repaired using

tyre sealant.

Have the tyre sealant bottle disposed of

professionally, e.g. at a Mercedes-Benz

Service Centre.

Aꢀer a maximum of ten minutes the tyre pres-

sure must be at least 200 kPa (2.0 bar/

29 psi).

#

Switch oﬀ the tyre inﬂation compressor.

Unscrew the ﬁlling hose from the valve of the

defective tyre.

&

WARNING Risk of accident due to the

speciﬁed tyre pressure not being attained

#

Observe the maximum permissible speed of

80 km/h for a tyre sealed with tyre sealant.

Aﬃx the upper section of the TIREFIT sticker

to the instrument cluster in a location where it

will be easily seen by the driver.

If the speciﬁed tyre pressure is not attained

aꢀer the speciﬁed time, the tyre is too badly

damaged. The tyre sealant cannot repair the

tyre in this instance.

The braking and driving characteristics may be

greatly impaired.

#

Stow the tyre sealant bottle and the tyre inﬂa-

tion compressor.

#

Pull away immediately.

Stop driving aꢀer approximately ten minutes

and check the tyre pressure using the tyre

inﬂation compressor.

*

NOTE Staining from leaking tyre sealant

#

Do not continue driving.

Consult a qualiﬁed specialist workshop.

The tyre pressure must now be at least

130 kPa (1.3 bar/19 psi).

Aꢀer use, excess tyre sealant may leak out

from the ﬁlling hose.

#

Therefore, place the ﬁlling hose in the

plastic bag that contained the TIREFIT

kit.

If, aꢀer ten minutes, a tyre pressure of 200 kPa

(2.0 bar/29 psi) has been attained:

&

WARNING Risk of accident due to the

speciﬁed tyre pressure not being attained

&

If the speciﬁed tyre pressure is not reached,

the tyre is too badly damaged. The tyre seal-

ant cannot repair the tyre in this instance.

The braking and driving characteristics may be

greatly impaired.

WARNING Risk of accident from driving

with sealed tyres

+

ENVIRONMENTAL NOTE Environmental

pollution caused by environmentally irre-

sponsible disposal

A tyre temporarily sealed with tyre sealant

impairs the handling characteristics and is not

suitable for higher speeds.

Tyre sealant contains pollutants.

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#

When the tyre pressure is correct, unscrew

the ﬁlling hose from the valve of the sealed

tyre.

Screw the valve cap onto the valve of the

sealed tyre.

#

Do not continue driving.

Consult a qualiﬁed specialist workshop.

Battery (vehicle)

Notes on the 12 V battery

Countries that have Mercedes-Benz Service24h:

you will ﬁnd a sticker with the telephone number,

e.g. on the B‑pillar on the driver's side.

&

WARNING Risk of an accident due to work

carried out incorrectly on the battery

Work carried out incorrectly on the battery

can, for example, lead to a short circuit. This

can restrict functions relevant for safety sys-

tems and impair the operating safety of your

vehicle.

You could lose control of the vehicle in the fol-

lowing situations in particular:

#

Correct the tyre pressure if it is still at least

130 kPa (1.3 bar/19 psi). See the tyre pres-

sure table on the fuel ﬁller ﬂap for values.

#

To increase the tyre pressure: switch on the

tyre inﬂation compressor.

R

when braking

R

in the event of abrupt steering manoeuvres

and/or when the vehicle's speed is not

adapted to the road conditions

#

Pull the tyre sealant bottle out of the tyre inﬂa-

tion compressor. Press the locking tabs on the

yellow cap together to do this.

The ﬁlling hose stays on the tyre sealant bot-

tle.

Drive to the nearest qualiﬁed specialist work-

shop and have the tyre, tyre sealant bottle and

ﬁlling hose replaced there.

#

In the event of a short circuit or a similar

incident, contact a qualiﬁed specialist

workshop immediately.

Do not drive on.

Always have work on the battery carried

out at a qualiﬁed specialist workshop.

#

To reduce the tyre pressure: press pressure

release button 1 next to manometer 2.

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R

Further information on ABS (/ page 336)

Further information on ESP^®(/ page 338)

(/ page 337)

#

&

WARNING Danger of chemical burns from

the battery acid

R

Battery acid is caustic.

Dispose of batteries in an

environmentally responsible manner.

Take discharged batteries to a qualiﬁed

specialist workshop or to a collection

point for used batteries.

#

For safety reasons, Mercedes-Benz recommends

that you only use batteries which have been

approved for your vehicle by Mercedes-Benz.

Avoid contact with the skin, eyes or

clothing.

#

Do not lean over the battery.

Do not inhale battery gases.

Keep children away from the battery.

Immediately rinse battery acid oﬀ thor-

oughly with plenty of clean water and

seek medical attention immediately.

#

All vehicles except vehicles with a lithium-ion bat-

tery

#

If you have to disconnect the 12 V battery, con-

tact a qualiﬁed specialist workshop.

Comply with safety notes and take protective

measures when handling batteries.

#

&

WARNING Risk of explosion due to elec-

trostatic charge

Electrostatic charge can ignite the highly

explosive gas mixture in the battery.

Risk of explosion if the 12 V battery is

used improperly.

All vehicles

#

To discharge any electrostatic charge

+

ENVIRONMENTAL NOTE Environmental

damage due to improper disposal of bat-

teries

that may have built up, touch the metal

vehicle body before handling the battery.

Fire, naked ﬂames and smoking are pro-

hibited when handling the battery. Avoid

creating sparks.

Electrolyte or battery acid is corrosive.

Avoid contact with the skin, eyes or cloth-

ing. Wear suitable protective clothing, in

particular gloves, an apron and a face

mask. Immediately rinse electrolyte or

The highly ﬂammable gas mixture is created while

the battery is charging and during starting assis-

tance.

Batteries contain pollutants. It is illegal

to dispose of them with the household rub-

bish.

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Further information on ESP^®(/ page 338)

(/ page 337)

R

acid splashes oﬀ with clean water. Consult Notes on the 48 V battery

a doctor immediately.

&

WARNING Risk of an accident due to work

carried out incorrectly on the battery

Do not place heavy objects on the surface

of the battery or use the battery to sup-

port a person in any way.

+

ENVIRONMENTAL NOTE Environmental

damage due to improper disposal of bat-

teries

Work carried out incorrectly on the battery

can, for example, lead to a short circuit. This

can restrict functions relevant for safety sys-

tems and impair the operating safety of your

vehicle.

Wear safety glasses.

Batteries contain pollutants. It is illegal

Keep children away.

to dispose of them with the household rub-

bish.

You could lose control of the vehicle in the fol-

lowing situations in particular:

Observe this Owner's Manual.

#

R

when braking

Dispose of batteries in an environ-

mentally responsible manner. Take dis-

charged batteries to a qualiﬁed specialist

workshop or to a collection point for

used batteries.

R

in the event of abrupt steering manoeuvres

and/or when the vehicle's speed is not

adapted to the road conditions

Observe the following if you do not intend to use

the vehicle over an extended period of time:

R

If available: activate standby mode

(/ page 333).

#

In the event of a short circuit or a similar

incident, contact a qualiﬁed specialist

workshop immediately.

Do not drive on.

Always have work on the battery carried

out at a qualiﬁed specialist workshop.

R

Only have work on the 48 V battery carried out at

a qualiﬁed specialist workshop.

Comply with safety notes and take protective

measures when handling batteries.

Alternatively: connect the battery to a battery

charger approved by Mercedes-Benz or con-

sult a qualiﬁed specialist workshop to discon-

nect the battery.

#

R

Further information on ABS (/ page 336)

F206 0105 02

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Risk of explosion if the 48 V battery is

used improperly.

Keep children away.

#

Leave the danger zone immediately.

Secure the danger zone at a suﬃcient

distance.

The surface of the 48 V battery may be

hot.

Wear safety glasses.

Call the ﬁre service.

Observe the notes on charging the high-voltage

Fire, naked ﬂames and smoking are pro-

hibited when handling the battery. Avoid

creating sparks.

Electrolyte or battery acid is corrosive.

Avoid contact with the skin, eyes or cloth-

ing. Wear suitable protective clothing, in

particular gloves, an apron and a face

mask. Immediately rinse oﬀ splashes of

electrolyte or acid with plenty of clean

water. Consult a doctor immediately.

Do not place heavy objects on the surface

of the battery or use the battery to sup-

port a person in any way.

Do not perform any work on the battery.

Always have any work on the battery car-

ried out at a qualiﬁed specialist workshop.

Do not disconnect the battery yourself.

Do not remove the battery yourself. Do

not attempt to open the battery.

Observe this Owner's Manual.

battery (/ page 306).

Risk of explosion.

Observe the following if you do not intend to use

the vehicle over an extended period of time:

Fire, naked ﬂames and smoking are pro-

hibited when handling the battery. Avoid

creating sparks.

Electrolyte or battery acid is corrosive.

Avoid contact with the skin, eyes or cloth-

ing. Wear suitable protective clothing, in

particular gloves, an apron and a face

mask. Immediately rinse electrolyte or

acid splashes oﬀ with clean water. Consult

a doctor immediately.

R

If available: activate standby mode

(/ page 333).

Notes on the high-voltage battery

&

DANGER Risk of ﬁre and explosion from

excessive internal pressure of the high-

voltage battery

In the event of a vehicle ﬁre, ﬂammable gas

can escape and ignite.

Wear safety glasses.

#

Stop the charging process immediately

in case of unusual odours, smoke or

burn marks.

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Keep children away.

&

WARNING Risk of explosion due to the

ignition of hydrogen gas

WARNING Risk of explosion due to explo-

sive mixture of gases

Observe this Owner's Manual.

If there is a short circuit or sparks are created,

there is a danger of hydrogen gas igniting

when you charge the battery.

An explosive mixture of gases can escape

from the battery during charging and starting

assistance.

#

Make sure that the POSITIVE terminal of

a connected battery does not come into

contact with vehicle parts.

Never place metal objects or tools on a

battery.

Fire, naked ﬂames, smoking and creating

Notes on starting assistance and charging the 12

V battery

sparks must be avoided.

#

Make sure there is adequate ventilation.

Do not stand over the battery.

#

All vehicles

When charging the battery and during starting

assistance, always use the jump-start connection

point in the engine compartment.

#

When connecting and disconnecting the

battery, always observe the sequence of

battery terminals described.

During starting assistance, always take

care to connect only battery terminals of

identical polarity.

During starting assistance, observe the

sequence described for connecting and

disconnecting the jump leads.

Do not connect or disconnect the bat-

tery terminals with the engine running.

&

WARNING Risk of explosion from a frozen

battery

A discharged battery may freeze at tempera-

tures slightly above or below freezing point.

During starting assistance or battery charging,

battery gas can be released.

*

NOTE Damage to the battery due to over-

voltage

#

When charging using a battery charger without

a maximum charging voltage, the battery or

the on-board electronics may be damaged.

#

Always allow a battery to thaw before

charging it or performing starting assis-

tance.

#

Only use battery chargers with a maxi-

mum charging voltage of 14.8 V.

#

If the indicator/warning lamps in the instrument

cluster do not light up at low temperatures, it is

very likely that the discharged battery has frozen.

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In this case you may neither jump-start the vehi-

cle nor charge the battery.

The service life of a battery that has been thawed

may be dramatically shortened. The starting char-

acteristics may be impaired, especially at low

temperatures.

Observe the additional following points when

charging the battery:

#

Avoid numerous and extended attempts

to start the engine.

R

Only use battery chargers tested and

approved for Mercedes-Benz.

Observe the following points during starting assis-

tance and when charging the battery:

R

Read the battery charger's operating instruc-

tions before charging the battery.

R

Only use undamaged jump lead/charging

cables with a suﬃcient cross-section and

It is recommended that you have a thawed battery

checked at a qualiﬁed specialist workshop.

Observe the additional following points during

starting assistance:

insulated terminal clamps.

R

Non-insulated parts of the terminal clamps

Plug-in hybrid

R

Starting assistance may only be provided

must not come into contact with other metal

parts while the jump lead/charging cable is

connected to the battery/jump-start connec-

tion point.

If your vehicle has been started with starting

assistance, it may not be possible to use the elec-

tric drive for approximately 30 minutes.

using vehicles, batteries or other jump start

devices with a nominal voltage of 12 V.

R

The vehicles must not touch.

Starting assistance is not considered to be a nor-

mal operating condition.

R

Vehicles with a petrol engine: jump-start the

The jump lead/charging cable must not come

into contact with any parts which may move

when the engine is running.

Always make sure that neither you nor the bat-

tery is electrostatically charged.

vehicle only when the engine and exhaust sys-

tem are cold.

All vehicles

*

NOTE Damage caused by numerous or

extended attempts to start the engine

Starting assistance and charging the 12 V battery

Preparing starting assistance/charging

R

Keep away from ﬁre and naked ﬂames.

Do not lean over the battery.

Numerous or extended attempts to start the

engine may damage the catalytic converter

due to non-combusted fuel.

#

Secure the vehicle by applying the electric

parking brake.

#

Switch the transmission to position j.

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641

#

Switch oﬀ the vehicle and all electrical con-

Start the engine of the donor vehicle and run

it at idling speed.

Connect the negative terminal of the donor

battery to earth point 4 of your vehicle using

the jump lead. Begin with the donor battery

ﬁrst.

sumers.

Open the bonnet.

#

Start the engine of your own vehicle.

Let the engines run for several minutes.

Before disconnecting the jump leads, switch

on an electrical consumer in your own vehicle,

e.g. the rear window heater or the lighting.

When the starting assistance procedure is com-

plete:

Example illustrations

#

First, remove the jump leads from earth point

#

Open cover 2 of positive contact 3 of the

Open cover 1 of the jump-starting connec-

4 and the negative terminal of the donor bat-

tery, then from positive contact 3 and the

positive terminal of the donor battery. Begin

each time with the contacts on your own vehi-

cle ﬁrst.

jump-starting connection point.

tion point.

Starting assistance

#

Connect positive contact 3 on your vehicle

to the positive terminal of the donor battery

using the jump lead. Always begin with posi-

tive contact 3 on your own vehicle ﬁrst.

#

Aꢀer removing the jump leads, close cover 2

of positive contact 3.

#

Close cover 1.

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#

If your vehicle has been started with starting

assistance, it may not be possible to use the elec-

tric drive for approximately 30 minutes.

Further information can be obtained at a qualiﬁed

specialist workshop.

Close cover 1.

have been tested and approved for your vehi-

cle by Mercedes-Benz.

Carry over detachable parts, such as vent

hoses, elbow ﬁttings or terminal covers from

the battery being replaced.

Make sure that the vent hose is always con-

nected to the original opening on the side of

the battery.

Fit any existing or supplied cell caps.

Otherwise, gases or battery acid could

escape.

Make sure that detachable parts are recon-

nected in the same way.

Further information can be obtained at a qualiﬁed

specialist workshop.

R

Replacing the 12 V battery

Charging

#

Observe the notes on the 12 V battery

(/ page 635).

#

Connect positive contact 3 of the vehicle to

the positive terminal of the charger using the

charging cable. Always begin with positive

contact 3 of the vehicle.

Mercedes-Benz recommends that you have the

12 V battery replaced at a qualiﬁed specialist

workshop, e.g. at a Mercedes-Benz Service

Centre.

Observe the following notes if you want to replace

the battery yourself:

#

Connect the negative terminal of the charger

R

and earth point 4 on the vehicle with the

charging cable. Start with the charger.

#

Start the charging process.

R

Always replace a faulty battery with a battery

When the charging process is complete:

which meets the speciﬁc vehicle require-

ments.

#

First, remove the charging cable from earth

point 4 and the negative terminal of the

charger, then from positive contact 3 and

the positive terminal of the charger. Begin

each time with the contacts of the vehicle.

Aꢀer removing the charging cable, close cover

2 of positive contact 3.

The vehicle is equipped with an AGM (Absorb-

ent Glass Mat) technology battery or a lithium-

ion battery. Full vehicle functionality is only

guaranteed with an AGM battery or lithium-ion

battery. For safety reasons, Mercedes-Benz

recommends that you only use batteries which

#

F206 0105 02

Breakdown assistance

643

4MATIC vehicles

Permitted towing methods

Tow-starting or towing away

Permitted towing methods (not plug-in hybrid)

*

NOTE Damage to the vehicle due to tow-

ing away incorrectly

#

Observe the instructions and notes on

towing away.

Both axles on Yes, for a maximum of 50 km

*

NOTE Damage from automatic braking

the ground

at 50 km/h

If one of the following functions is activated,

the vehicle will brake automatically in certain

situations:

Vehicles with rear wheel drive

Front axle

raised

No

Permitted towing methods

R

Active Brake Assist

Rear axle

raised

No

Both axles on Yes, for a maximum of 50 km

the ground

R

Active Distance Assist DISTRONIC

at 50 km/h

R

HOLD function

Towing with a raised axle: towing should be per-

formed by a towing company.

Front axle

raised

No

R

Active Parking Assist

To avoid damaging the vehicle, deactivate

these systems e.g. during towing or in the car

wash.

Rear axle

raised

Yes, if the steering wheel is

ﬁxed in the centre position

with a steering wheel lock

Permitted towing methods (plug-in hybrid)

%

The following information does not apply to

Mercedes-AMG E Performance vehicles.

Mercedes-Benz recommends transporting your

vehicle in the case of a breakdown, rather than

towing it away.

*

NOTE Mercedes-AMG vehicles

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

For towing with both axles on the ground, use a

tow rope or tow rod. Do not use tow bar systems.

F206 0105 02

Breakdown assistance

644

Mercedes-Benz recommends transporting your

vehicle in the case of a breakdown, rather than

towing it away.

For towing with both axles on the ground, use a

tow rope or tow rod. Do not use tow bar systems.

speed of 10 km/h must not be exceeded. Beyond 4MATIC vehicles

these limits, only transporting is permitted.

Permitted towing methods

Vehicles with rear wheel drive

Permitted towing methods

Both axles on the

ground

Yes, for a maximum of

50 km at 50 km/h,

only forwards with the

driver in the vehicle

Both axles on the

ground

Yes, for a maximum of

*

NOTE Damage to the vehicle due to tow-

ing away incorrectly

50 km at 50 km/h,

only forwards with the

driver in the vehicle

Front axle raised

Rear axle raised

No

#

Observe the instructions and notes on

towing away.

Front axle raised

Rear axle raised

No

In the following situations, only transporting the

vehicle is permitted:

Yes, if the steering

wheel is ﬁxed in the

centre position with a

steering wheel lock

Permissible towing methods (Mercedes-AMG E

Performance)

R

the driver's display is not working

R

the á Towing not permitted See Owner's

*

NOTE Damage caused by towing

Manual display message appears in the driv-

Towing can damage the hybrid drive system.

er's display

#

Have the vehicle loaded and transported

Exception: if the vehicle is located in a danger

zone, it can be recovered from the danger zone

despite the á Towing not permitted See

Owner's Manual display message or the display

not working. It must not be towed further than

50 m with both axles on the ground. A towing

rather than towed.

F206 0105 02

Breakdown assistance

645

Towing the vehicle with both axles on the ground

towed away exceeds the permissible

gross mass.

*

NOTE Damage due to towing away at

excessively high speeds or over long dis-

tances

#

Observe the notes on the permitted towing

methods.

If a vehicle has to be tow-started or towed away,

its permissible gross mass must not exceed the

permissible gross mass of the towing vehicle.

#

Make sure that the battery is connected and

charged.

The drivetrain could be damaged when towing

at excessively high speeds or over long distan-

ces.

#

Information on the permissible gross mass of

Observe the following points when the battery is

discharged:

#

A towing speed of 50 km/h must not be

exceeded.

A towing distance of 50 km must not be

exceeded.

the vehicle can be found on the vehicle identi-

ﬁcation plate (/ page 783).

R

The vehicle cannot be started.

#

Vehicles with automatic transmission: do not

R

The electric parking brake cannot be released

or applied.

open the driver's door or front-passenger

door; the transmission otherwise automati-

cally shiꢀs to position j.

R

Vehicles with automatic transmission: the

&

WARNING Risk of accident when towing a

vehicle which is too heavy

transmission cannot be shiꢀed to position i

or j.

#

Fit the towing eye (/ page 647).

#

Fasten the towing device.

If the vehicle to be tow-started or towed away

is heavier than the permissible gross mass of

your vehicle, the following situations can

occur:

%

Vehicles with automatic transmission: if the

transmission cannot be shiꢀed to position i

or if the display does not show anything,

transport the vehicle (/ page 646). A towing

vehicle with liꢀing equipment is required for

vehicle transportation.

*

NOTE Damage due to incorrect connec-

tion of the tow bar

R

the towing eye may become detached.

the vehicle/trailer combination may

swerve or overturn.

#

Only connect the tow rope or tow bar to

the towing eyes.

R

#

Deactivate the automatic locking mechanism

(/ page 154).

#

Before tow-starting or towing away,

check if the vehicle to be tow-started or

F206 0105 02

Breakdown assistance

646

#

Do not activate the HOLD function.

Deactivate tow-away protection

(/ page 172).

Shiꢀ the automatic transmission to position

i.

#

Use a tow bar.

#

Make sure that the steering wheel can

move freely before towing the vehicle

away.

%

The automatic transmission may be locked in

position j in the event of damage to the

electrics. To shiꢀ to i, provide the on-board

electrical system with power (/ page 57).

#

Deactivate Active Brake Assist (/ page 369).

Vehicles with automatic transmission: shiꢀ to

position i.

*

NOTE Damage due to excessive tractive

power

#

Load the vehicle onto the transporter.

Shiꢀ the automatic transmission to position

j.

#

Release the electric parking brake.

If you pull away sharply, the tractive power

may be too high and the vehicles could be

damaged.

&

WARNING Risk of accident due to limited

safety-related functions during the towing

process

#

Use the electric parking brake to secure the

vehicle against rolling away.

Only secure the vehicle by the wheels.

#

Pull away slowly and smoothly.

Safety-related functions are limited or no lon-

ger available in the following situations:

Loading the vehicle for transport

R

the vehicle is switched oﬀ.

Hybrid vehicles: Transport of vehicles should only

be carried out by professional towing companies.

R

the brake system or power steering system

is malfunctioning.

#

Observe the notes on towing away

(/ page 62).

R

the energy supply or the on-board electri-

cal system is malfunctioning.

#

Connect the towing device to the towing eye

When your vehicle is towed away, signiﬁcantly

more eﬀort may be required to steer and

brake than is normally required.

in order to load the vehicle.

%

You can also attach the tow bar to the trailer

hitch.

F206 0105 02

Breakdown assistance

647

4MATIC vehicles/vehicles with automatic trans-

mission

Plug-in hybrid

The towing eye 1 is located under the boot ﬂoor

in the loading sill.

%

Depending on the vehicle version, the towing

eye is in a diﬀerent position in the boot.

Fitting and removing the towing eye

The towing eye 1 is located in a holder in the

luggage compartment on the leꢀ.

#

Make sure that the front and rear axles come

to rest on the same transportation vehicle.

Not plug-in hybrid

*

NOTE Damage to the drive train due to

incorrect positioning of the vehicle

#

Do not position the vehicle above the

connection point of the transport vehi-

cle.

Towing eye storage location

F206 0105 02

Breakdown assistance

648

#

Press the mark on the cover 1 inwards and

remove.

Vehicles with an automatic transmission must

not be tow-started.

*

NOTE Damage to the vehicle due to incor-

rect use of the towing eye or trailer hitch

When a towing eye or trailer hitch is used to

recover a vehicle, the vehicle may be damaged

in the process.

Electrical fuses

Notes on electrical fuses

#

Only use the towing eye or trailer hitch to

tow away or tow start the vehicle.

&

WARNING Risk of accident and injury due

to overloaded lines

#

Do not use the towing eye or trailer hitch

to tow the vehicle during recovery.

If you manipulate or bridge a faulty fuse or if

you replace it with a fuse with a higher amper-

age, the electric line could be overloaded.

Tow-starting the vehicle

This could result in a ﬁre.

#

Depending on the vehicle version, use a tool

(suchas a screwdriver) to prise the cover out

of recess 2.

Screw in the towing eye clockwise as far as it

will go and tighten.

Vehicles with automatic transmission

#

Always replace faulty fuses with speci-

ﬁed new fuses containing the correct

amperage.

*

NOTE Damage to the automatic transmis-

sion due to tow-starting

*

The automatic transmission may be damaged

in the process of tow-starting vehicles with

automatic transmission.

NOTE Damage due to incorrect fuses

Vehicles with a trailer hitch: vehicles with a trailer

hitch do not have a rear bracket for the towing

eye. Fasten the tow bar to the trailer hitch.

Using incorrect fuses can result in damage to

electrical components or systems or their

functions being considerably restricted.

#

Vehicles with automatic transmission

must not be tow-started.

#

Aꢀer removing the towing eye, engage the

cover 1 in the bumper.

F206 0105 02

Breakdown assistance

649

If the newly inserted fuse also blows, have the

cause traced and rectiﬁed at a qualiﬁed specialist

workshop.

Observe the notes on electrical fuses

#

Use only fuses approved for Mercedes-

Benz with the respective speciﬁed fuse

rating.

(/ page 59).

Opening

Ensure the following before replacing a fuse:

Blown fuses must be replaced with fuses of the

same rating, which you can recognise by the col-

our and the label. The fuse ratings and further

information to be observed can be found in the

fuse assignment diagram.

Fuse assignment diagram: on the fuse box in the

boot (/ page 651).

R

&

The vehicle is secured against rolling away.

All electrical consumers are switched oﬀ.

The vehicle is switched oﬀ.

WARNING Risk of injury from using the

windscreen wipers when the bonnet is

open

If the windscreen wipers start moving when

the bonnet is open, you could be trapped by

the wiper linkage.

The electrical fuses are located in various fuse

boxes:

R

Fuse box in the engine compartment on the

driver's side (/ page 649)

#

Always switch oﬀ the windscreen wipers

and the vehicle ﬁrst if you need to open

*

NOTE Damage or malfunctions caused by

moisture

R

the bonnet.

Fuse box on the driver's side of the cockpit

(/ page 651)

Moisture may cause damage to the electrical

system or cause it to malfunction.

#

Open the bonnet (/ page 611).

Fuse box in the front passenger footwell

(/ page 651)

#

When the fuse box is open, make sure

that no moisture can enter the fuse box.

Fuse box in the boot (/ page 651)

#

When closing the fuse box, make sure

Opening and closing the fuse box in the engine

compartment

that the seal of the lid is positioned cor-

rectly on the fuse box.

Requirements

R

A dry cloth and a screwdriver are available.

F206 0105 02

Breakdown assistance

650

#

Turn both retaining clips 2 on cover 1 on

the driver's side a quarter-turn clockwise.

#

Fold cover 1 upwards.

#

Remove any existing moisture from the fuse

box using a dry cloth.

Loosen screws 3 and remove fuse box lid 4

from the top.

Insert lid 4 into the bracket at the rear of the

fuse box.

Fold down lid 4 of the fuse box and tighten

screws 3.

Closing

#

Check whether the seal is positioned correctly

in lid 4.

F206 0105 02

Breakdown assistance

651

#

Fold down cover 1.

Turn both retaining clips 2 on cover 1 a

quarter-turn anti-clockwise.

The fuse box is on the driver's side on the side of

the cockpit under a cover.

#

Open cover 1 in the direction of the arrow

and remove it.

#

Close the bonnet.

#

Mercedes-Benz recommends you have the

fuse box opened at a Mercedes-Benz Service

Centre.

#

Opening and closing the fuse box in the cockpit

To open: fold out and remove cover 1.

To close: reinsert cover 1.

R

Observe the notes on electrical fuses

(/ page 59).

Opening and closing the fuse box in the front

passenger footwell

Opening and closing the fuse box in the boot

Observe the notes on electrical fuses

(/ page 59).

Observe the notes on electrical fuses

(/ page 59).

F206 0105 02

Breakdown assistance

652

#

Open cover 1.

F206 0105 02

Breakdown assistance for Your Mercedes C Class 4 Door 2023

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