Get Breakdown assistance -> Battery Guide for Mercedes E Class 4 Door 2022

Breakdown assistance

296

Further information on ABS (/ page 172)

Further information on ESP^®(/ page 172)

Battery (vehicle)

Notes on the 12 V battery

For safety reasons, Mercedes-Benz recommends

that you only use batteries which have been tes-

ted and approved for your vehicle by Mercedes-

Benz.

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:

All vehhiicllees except vehicles with a lithium-ion bat-

tery

To reduce the tire pressure: press pressure

release button 1 next to manometer 2.

WARNING Risk of explosion due to elec-

trostatic charge

When the tire pressure is correct, unscrew the

Electrostatic charge can ignite the highly

explosive gas mixture in the battery.

When braking

ꢀlling hose from the valve of the sealed tire.

In the event of abrupt steering maneuvers

and/or when the vehicle's speed is not

adapted to the road conditions

Screw the valve cap onto the valve of the

sealed tire.

To discharge any electrostatic charge

that may have built up, touch the metal

vehicle body before handling the battery.

Pull the tire sealant bottle out of the tire inꢁa-

tion compressor.

In the event of a short circuit or a similar

The ꢀlling hose stays on the tire sealant bottle.

The highly ꢁammable gas mixture is created while

the battery is charging and during starting assis-

tance.

incident, contact a qualiꢀed specialist

workshop immediately.

Drive to the nearest qualiꢀed specialist work-

shop and have the tire, tire sealant bottle and

ꢀlling hose replaced there.

Do not drive on.

Always have work on the battery carried

out at a qualiꢀed specialist workshop.

Breakdown assistance

297

and a face mask. Immediately rinse

electrolyte or acid splashes oꢂ with

clean water. Consult a doctor if neces-

sary.

WARNING Danger of chemical burns from

the battery acid

Battery acid is caustic.

Dispose of batteries in an

environmentally responsible manner.

Take discharged batteries to a qualiꢀed

specialist workshop or to a collection

point for used batteries.

Avoid contact with the skin, eyes or

clothing.

Do not lean over the battery.

Do not inhale battery gases.

Wear safety glasses.

Keep children away.

Keep children away from the battery.

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

tact a qualiꢀed specialist workshop.

Comply with safety notes and take protective

measures when handling batteries.

Immediately rinse battery acid oꢂ thor-

oughly with plenty of clean water and

seek medical attention immediately.

Observe this Operator's Manual.

Risk of explosion.

All vehicles

ENVIRONMENTAL NOTE Environmental

damage due to improper disposal of bat-

teries

Observe the following if you do not intend to use

the vehicle over an extended period of time:

Fire, open ꢁames and smoking are

prohibited when handling the battery.

Avoid creating sparks.

Activate standby mode.

Alternatively: connect the battery to a battery

charger approved by Mercedes-Benz or con-

sult a qualiꢀed specialist workshop to discon-

nect the battery.

Electrolyte or battery acid is corrosive.

Avoid contact with the skin, eyes or

clothing. Wear suitable protective

clothing, in particular gloves, an apron

Batteries contain pollutants. It is

illegal to dispose of them with the household

rubbish.

Breakdown assistance

298

Notes on starting assistance and charging the 12

V battery

Take care 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, open ꢁames, smoking and creating

sparks must be avoided.

Make sure that there is suꢃcient ventila-

tion.

All vehicles

When charging the battery and during starting

assistance, always use the jump-start connection

point in the engine compartment.

Do not stand over the battery.

When connecting and disconnecting the

battery, always observe the sequence of

battery terminals described.

Always take care to connect only battery

terminals of identical polarity when jump

starting a vehicle.

During starting assistance, it is essential

to observe the sequence described for

connecting and disconnecting the

jumper cables.

Do not connect or disconnect the bat-

tery terminals while the engine is run-

ning.

WARNING Risk of explosion from a frozen

battery

NOTE Damage to the battery from over-

voltage

A discharged battery may freeze at tempera-

tures slightly above or below freezing point.

When charging using a battery charger without

a maximum charging voltage, the battery or

the on-board electronics may be damaged.

During starting assistance or battery charging,

battery gas can be released.

Only use battery chargers with a maxi-

mum charging voltage of 14.8 V.

Always allow a battery to thaw before

charging it or performing starting assis-

tance.

WARNING Risk of explosion due to igniting

hydrogen gas

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.

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

cle nor charge the battery.

If there is a short circuit or sparks start to

form when charging a battery, there is a dan-

ger of the hydrogen gas igniting.

WARNING Risk of explosion due to a mix-

ture of explosive gases

The service life of a battery that has been thawed

may be dramatically shortened. The starting char-

A mixture of explosive gases can escape from

the battery during charging and jump starting.

Breakdown assistance

299

acteristics may be impaired, especially at low

temperatures.

Observe the following points during starting assis- Observe the additional following points during

tance and when charging the battery:

starting assistance:

It is recommended that you have a thawed battery

Only use undamaged jumper cables/charging

Starting assistance may only be provided

checked at a qualiꢀed specialist workshop.

cables with a suꢃcient cross-section and

using vehicles, batteries or other jump start

insulated terminal clamps.

Non-insulated parts of the terminal clamps

must not come into contact with other metal

parts while the jumper cable/charging cable

is connected to the battery/jump-start con-

nection point.

devices with a nominal voltage of 12 V.

The vehicles must not touch.

Vehicles with a gasoline engine: Jump-start the

vehicle only when the engine and exhaust sys-

tem are cold.

VVehicles with plug-in hybrid:

If your vehicle has been started with starting

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

tric drive for approximately 30 minutes.

Starting assistance is not considered to be a nor-

mal operating condition.

The jumper cable/charging cable must not

Starting assistance and charging the 12 V battery

Requirements:

All vehicles

come into contact with any parts which may

move when the engine is running.

NOTE Damage caused by numerous or

extended attempts to start the engine

The vehicle is secured with the electric park-

ing brake.

Always make sure that neither you nor the bat-

tery is electrostatically charged.

Numerous or extended attempts to start the

engine may damage the catalytic converter

due to non-combusted fuel.

Vehicles with automatic transmission: The

Keep away from ꢀre and open ꢁames.

Do not lean over the battery.

transmission is in position j.

The vehicle and all electrical consumers are

switched oꢂ.

The hood is open.

Observe the additional following points when

charging the battery:

Avoid numerous and extended attempts

to start the engine.

Only use battery chargers tested and

approved for Mercedes-Benz.

Read the battery charger's operating instruc-

tions before charging the battery.

Breakdown assistance

300

Always begin with positive contact 2 on your

nal of the donor battery, then from positive

contact 2 and the positive terminal of the

donor battery. Begin each time with the con-

tacts on your own vehicle ꢀrst.

Aꢄer removing the jumper cable/charging

cable, close cover 1 of positive contact 2.

own vehicle ꢀrst.

During starting assistance: start the engine of

the donor vehicle and run at idle speed.

Connect the negative terminal of the donor

battery and ground point 3 of your own vehi-

cle by using the jumper cable/charging cable.

Begin with the donor battery ꢀrst.

During starting assistance: start the engine of

your own vehicle.

During the charging process: start the charg-

ing process.

During starting assistance: let the engines run

for several minutes.

During starting assistance: before disconnect-

ing the jumper cable, switch on an electrical

consumer on your own vehicle, e.g. the rear

window heater or lighting.

Further information can be obtained at a qualiꢀed

specialist workshop.

Replacing the 12 V battery

Observe the notes on the 12 V battery

(/ page 296).

Mercedes-Benz recommends that you have the

12 V battery replaced at a qualiꢀed specialist

workshop, e.g. at an authorized Mercedes-Benz

Center.

Observe the following notes if you want to replace

the battery yourself:

Example: engine compartment

Slide cover 1 of positive contact 2 on the

jump-starting connection point in the direction

of the arrow.

When the starting assistance/charging process is

complete, perform the following steps:

Connect positive contact 2 on your vehicle

to the positive terminal of the donor battery

using the jumper cable/charging cable.

Always replace a faulty battery with a battery

which meets the speciꢀc vehicle require-

ments.

First, remove the jumper cable/charging cable

from ground point 3 and the negative termi-

Breakdown assistance

301

The vehicle is equipped with an AGM technol-

ogy battery (Absorbent Glass Mat) or a lith-

ium-ion battery. Full vehicle functionality is

only guaranteed with an AGM battery or lith-

ium-ion battery. For safety reasons, Mercedes-

Benz recommends that you only use batteries

which have been tested and approved for your

vehicle by Mercedes-Benz.

Carry over detachable parts, such as vent

hoses, elbow ꢀttings 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.

Tow starting or towing away

Permitted towing methods (non plug-in hybrid)

NOTE Damage to the vehicle due to tow-

ing away incorrectly

Observe the instructions and notes on

towing away.

NOTE Damage from automatic braking

If one of the following functions is switched

on, the vehicle brakes automatically in certain

situations:

Vehicles with rear wheel drive

Permitted towing methods

Active Brake Assist

Both axles on Yes, maximum 31 miles

the ground

Active Distance Assist DISTRONIC

(50 km) at 31 mph (50 km/h)

HOLD function

Front axle

raised

Active Parking Assist

To avoid damage to the vehicle, deactivate

these systems in the following or similar situa-

tions:

Rear axle

raised

Yes, if the steering wheel is

ꢀxed in the center position

with a steering wheel lock

Install 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.

During towing

In a car wash

Mercedes-Benz recommends transporting your

vehicle in the case of a breakdown, rather than

towing it away.

For towing, use a tow rope or tow bar with both

axles on the ground. Do not use tow bar systems.

Breakdown assistance -> Battery for Your Mercedes E Class 4 Door 2022

Popular Manuals