Checking and refilling -> In the engine compartment for Your Volkswagen Golf 4 Door 2023

the job and have the correct technical informa-  
tion and the correct tools.  
Checking and refilling  
In the engine compartment  
Introduction  
If you are uncertain about what to do, have the  
work performed by an authorized Volkswagen  
dealer, an authorized Volkswagen Service Facili-  
ty, or another qualified workshop. Serious per-  
sonal injury may result from improperly per-  
formed work.  
·
Always position the vehicle on a firm and level sur-  
face before doing any work in the engine compart-  
ment.  
We strongly recommend that you always have  
headlights and H7 bulbs replaced by a qualified  
technician. Serious personal injury may result  
from improperly performed work.  
·
·
The engine compartment of a vehicle is a hazardous  
area. Never do any work on the engine or in the en-  
gine compartment unless you  
Never open or close the engine hood if steam or  
coolant is escaping. Hot steam or coolant can  
cause serious burns. Always wait until you no  
longer see or hear steam or coolant escaping  
from the engine.  
— know exactly how to carry out the job,  
— have the correct technical information and the  
proper tools and supplies, and  
— are familiar with the necessary safety precautions  
Always let the engine cool down completely be-  
fore carefully opening the hood.  
·
·
·
.
If you are uncertain in any way, have the work done  
by an authorized Volkswagen dealer or an authorized  
Volkswagen Service Facility. Serious personal injury  
may result from improperly performed work.  
Hot parts of the engine and the exhaust system  
will burn skin on contact.  
When the engine has cooled down and you are  
ready to open the hood:  
— Set the parking brake and shift the transmis-  
sion to Park (P) (automatic or DSG) or Neutral  
(manual only).  
WARNING  
Unintended vehicle movement during mainte-  
nance work can cause serious personal injuries.  
— Take the vehicle key out of the ignition.  
Never work under the vehicle unless you have  
·
— On vehicles with Keyless Access, make sure  
that the remote control vehicle key is out of  
range of the vehicle and that the vehicle can-  
not be started by depressing the starter but-  
ton → page 142, Starter button.  
safely secured the vehicle from moving. If you  
must work under the vehicle with the wheels on  
the ground, always make sure that the vehicle is  
on level ground, that all 4 wheels are chocked  
to keep them from moving, and that the key is  
not in the ignition.  
— Always keep children and others away from  
the engine compartment and never leave  
them unsupervised.  
If you must work under a vehicle raised on  
·
a floor jack, always make sure that the vehicle is  
safely supported on safety stands intended for  
that purpose that are strong enough to support  
the weight of the vehicle. The jack supplied with  
the vehicle is not strong enough for this pur-  
pose and can collapse causing serious personal  
injury.  
The engine coolant system is under pressure  
when the engine is hot. Never unscrew the  
coolant expansion tank cap when the engine is  
hot. Hot coolant can spray out and cause severe  
burns and other serious injuries.  
·
·
— Turn the cap slowly and very carefully in  
a counterclockwise direction while applying  
light downward pressure on the top of the  
cap.  
The Start-stop system must be deactivated.  
·
WARNING  
— Always protect your face, hands, and arms  
from hot escaping coolant or steam by cover-  
ing the cap with a large, thick rag.  
The engine compartment of any motor vehicle is  
a potentially dangerous area and can cause serious  
personal injury.  
Never spill fluids on the engine or exhaust sys-  
tem when refilling. Spilling fluids onto hot parts  
of the engine or exhaust system can cause  
a fire.  
Always use extreme caution when doing any  
·
work in the engine compartment. Always follow  
commonly accepted safety practices and use  
common sense. Never risk personal injury.  
Never perform any work in the engine compart-  
ment unless you know exactly how to carry out  
·
In the engine compartment  
241  
 
of the engine and can cause fires, which can lead  
to serious injuries.  
WARNING  
High voltage systems in the engine compartment  
can cause electrical shocks or even electrocution,  
severe burns, other serious injuries, and even  
death!  
Never cover the engine with blankets or other  
materials.  
·
WARNING  
Never short-circuit the electrical system. Be es-  
pecially careful when using jumper cables. The  
vehicle's battery could explode!  
·
Operating fluids and some materials in the engine  
compartment can catch fire easily, causing burns  
and other serious personal injuries!  
To reduce the risk of electrical shock and per-  
sonal injury while the engine is running or being  
started:  
·
Never smoke near the engine compartment.  
·
Never work next to open flames or sparks.  
·
— Never touch ignition cables. Never touch oth-  
er components of the high voltage electronic  
ignition system.  
Never pour or spill operating fluids or other  
·
flammable liquids on the engine. These fluids  
can ignite on hot engine parts and cause inju-  
ries.  
Read and heed the important information and  
warnings on cleaning the engine compartment  
→ page 310, Exterior care and cleaning.  
·
Before working on the vehicle's fuel system or  
12 Volt electrical system:  
·
— Always disconnect the 12 Volt vehicle bat-  
tery. Note that if the vehicle is locked when  
the 12 Volt vehicle battery is disconnected,  
the anti-theft alarm system will sound  
→ page 95, Anti-theft alarm system.  
WARNING  
Moving parts in the engine compartment can  
cause serious personal injury on contact.  
Never reach into the area around or touch the  
·
— Never work near a furnace, water heater, or  
other open flame.  
radiator fan. Contact with the blades can cause  
serious personal injury. Always remember that  
the radiator fan is temperature-controlled and  
can come on suddenly even when the engine  
has been switched off for a while and the key  
has been removed from the ignition.  
Always have a functional, approved fire extin-  
guisher nearby.  
·
NOTICE  
If you have to perform a check or repair when  
·
When changing or topping off fluids, make sure that  
you pour the fluids into the correct reservoirs. Add-  
ing the wrong type of operating fluids will cause se-  
rious malfunctions and engine damage.  
the engine is running, there are more risks from  
the rotating parts, such as the drive belts, alter-  
nator, radiator fan, etc., and from the high-volt-  
age ignition system. Always use extreme care.  
Fluid leaks and spills are harmful to the envi-  
ronment. Regularly check the ground under-  
neath your vehicle for this reason. If you find spots  
of oil or other fluids, have your vehicle checked by  
your authorized Volkswagen dealer or authorized  
Volkswagen Service Facility. Dispose of leaked oper-  
ating fluids properly.  
— Always make sure that jewelry, loose clothing  
and long hair do not get caught in rotating  
engine parts. Before starting any work re-  
move your jewelry, take off your necktie, tie  
back and cover your hair, and do not wear  
clothing that can hang down and get caught  
in moving engine parts.  
— Always use extreme caution if the accelerator  
pedal has to be depressed to perform  
a check. The vehicle will start to move if the  
transmission is in gear, even if the parking  
brake is on.  
Never leave any objects in the engine compart-  
·
ment, for example cleaning rags and tools. Ob-  
jects left behind can cause malfunctions, engine  
damage, and even fires.  
WARNING  
Additional materials in the engine compartment  
such as blankets can interfere with the operation  
242  
Checking and refilling  
Preparing to work in the engine  
compartment  
Opening or closing the engine com-  
partment  
Please read the introductory information and  
Please read the introductory information and  
heed the Warnings and Notice  
241.  
and on page  
heed the Warnings and Notice  
241.  
and on page  
Checklist  
out the following steps in the order in which they  
are listed →  
:
Park the vehicle in a safe place on a firm, level  
surface.  
Hold the brake pedal down until the engine is  
switched off.  
Shift the transmission to Park (P) (automatic or  
DSG) or Neutral (manual only) → page 148, Au-  
tomatic and DSG® transmission.  
Set the parking brake to help prevent the vehi-  
cle from moving → page 178, Using the parking  
brake (Golf, Golf GTI).  
Fig. 166 In the footwell on the driver side: Inside en-  
gine hood release lever.  
Stop the engine and remove the key from the  
ignition switch or turn off the ignition with the  
starter button and remove the key from the ve-  
hicle → page 141, Starting and stopping the en-  
gine.  
Let the engine cool down sufficiently.  
Keep children and others away from the vehicle.  
Make sure the vehicle cannot move unexpected-  
ly.  
WARNING  
Disregarding the safety-related checklist may re-  
sult in serious injuries.  
Always review and follow the checklist. Follow  
accepted safety practices and use common  
sense.  
·
Fig. 167 Above the radiator grille: Outside engine hood  
release.  
Opening the engine hood  
— Before you open the hood, make sure that the  
windshield wiper arms are resting on the wind-  
shield →  
.
— Open the driver door and pull the inside hood re-  
lease lever in the direction of the arrow  
fig. 166. The engine hood is released from its  
latch by a spring →  
.
— Push the outside hood release lever → fig. 167  
pressure strut will hold the hood up.  
In the engine compartment  
243  
   
Closing the engine hood  
Display  
— Pull the hood down to overcome the resistance of  
the gas-pressure strut →  
.
Please read the introductory information and  
heed the Warnings and Notice  
241.  
and on page  
— Lower the engine hood by hand until it is about  
8 in. (20 cm) above its latch and then let it drop  
into place to latch it. Do not push down on it af-  
terwards!  
and close it properly.  
When the hood is properly closed, you can see that  
it fits flush with the other body parts. The display in  
the instrument cluster no longer indicates that the  
engine hood is open → page 244, Display.  
WARNING  
and block your view while you are driving. This can  
lead to a crash and serious personal injuries.  
After closing the engine hood, check that the  
·
Fig. 168 In the instrument cluster display: Engine hood  
open or not properly closed.  
hood release lever is properly latched into the  
hood latch. The engine hood must be flush with  
the surrounding auto body parts.  
When the ignition is switched on, several warning  
and indicator lights come on briefly for a function  
check. They go out after a few seconds.  
If you ever notice that the hood latch is not  
properly secured when the vehicle is moving,  
stop at once and close it.  
·
If the engine hood is not closed properly, the vehicle  
icon appears in the instrument cluster display indi-  
cating the engine hood is open → fig. 168. Stop!  
Open and close the engine hood again.  
Never let anyone get in the way of the hood  
when closing it.  
·
NOTICE  
goes out a short time after the vehicle has been  
locked.  
Make sure the windshield wipers are switched off  
·
and the windshield wiper arms are resting on the  
windshield before you open the hood. Otherwise,  
the windshield wipers and the hood may be dam-  
aged.  
WARNING  
Always put the windshield wiper arms down  
against the windshield before driving the vehicle.  
·
Failure to heed warning lights or other warnings  
can result in a collision and serious personal injury.  
Never ignore warning lights or text WARNINGS.  
·
·
NOTICE  
Always stop the vehicle as soon as it is safe to  
do so.  
Before opening or closing the engine hood, make  
sure there is enough room to do so, for example  
when the vehicle is in a garage.  
Operating fluids and equip-  
ment  
Operating fluids and parts that wear out with use  
(such as timing belts, tires, engine coolants, engine  
oils, spark plugs, and vehicle batteries) are constant-  
ly being improved. For this reason, it is important to  
have operating fluids changed and worn parts re-  
placed by an authorized Volkswagen dealer or au-  
thorized Volkswagen Service Facility. Authorized  
244  
Checking and refilling