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Table of Contents > Check engine > In the engine compartment

VW Passat B8 Owner's Manual ➜ In the engine compartment

the necessary work to a specialized workshop.  
If work is not carried out properly, serious injuries may  
result.  
check and reset  
in the engine bay  
· Never open or close the engine hood if steam or engine  
coolant is escaping from the engine compartment. Hot  
steam or coolant can cause severe burns. Always wait until  
you stop seeing or hearing coolant coming out of the engine  
compartment.  
Safety warnings for working in  
the engine compartment  
The vehicle's engine bay is a dangerous area. Only carry out  
work in the engine compartment yourself if you are familiar with  
the necessary operations and the generally applicable safety  
measures, and if you have the appropriate tools, media and  
operating fluids. Improper work can result in serious injury ÿ . If  
necessary, have all work carried out by a specialist workshop.  
Volkswagen recommends going to a Volkswagen dealer for this.  
· Before opening the engine hood, always wait for the  
engine to cool down.  
· If you touch hot engine or exhaust components, you could get  
skin burns.  
· When the engine has cooled down, before opening the  
engine hood note the following:  
— Engage the electronic parking brake  
Before carrying out any work in the engine compartment, always  
park the vehicle on level and firm ground, taking all necessary  
safety precautions.  
and place the selector lever in position P or the gear  
lever in point  
dead.  
— Switch off the ignition, remove the key from the ignition  
lock and store it in a safe place at a safe distance from  
the vehicle so that, especially if the vehicle has the  
"Keyless Access" system, it is not possible to switch the  
ignition on by carelessness and start the combustion  
engine.  
WARNING  
Any accidental movement of the vehicle during maintenance  
work could cause serious injury.  
· Never carry out work under the vehicle without having  
previously immobilized it to prevent it from moving. When  
carrying out work under the vehicle with the wheels on the  
ground, the vehicle must be on a level surface, the wheels  
must be blocked and, if necessary, the vehicle key must  
be removed from the ignition lock.  
— Always keep children away from the  
engine compartment and never leave them unattended.  
· When the engine is hot, its cooling system is under pressure.  
Never open the engine coolant expansion tank cap when  
the engine is hot. Doing so could cause coolant to splatter  
and cause serious burns and other injuries.  
· If you have to work under the vehicle, additionally support it  
securely with suitable stands. The jack is not suitable for  
this purpose and may not resist, which could cause  
serious injury.  
— Turn the cap of the expansion tank slowly and very  
carefully in an anti-clockwise direction while exerting  
· The Start-Stop system must be switched off manually.  
light pressure on it.  
WARNING  
— Always protect your face, hands and  
The engine compartment of any vehicle is a dangerous area  
warm coolant or steam arms with a large, thick rag.  
where serious injury can occur!  
· When replenishing operating fluids, avoid getting them on  
· When carrying out any type of work, always be extremely  
engine components or the exhaust system. These liquids  
cautious and prudent, and take into account the safety  
could cause a fire.  
measures of general validity. Never put yourself at risk.  
· Never carry out work in the engine compartment if you are not  
3 G 0 0 1 2 7 6 0 A H  
familiar with the necessary operations. If you are not sure  
what to do, order  
in the engine bay  
315  
WARNING  
WARNING  
Placing additional insulating items (eg blankets)  
The electrical system is under high voltage and can  
cause electric shock, burns, serious injury and death!  
in the engine compartment could prevent proper  
engine operation, could cause a fire, and could cause  
serious injury.  
· Never short-circuit the electrical system. The 12  
volt battery could explode.  
· Never cover the motor with blankets or other insulating  
materials.  
To reduce the risk of electric shock  
electric shock and serious injury, never touch  
the electrical wires of the ignition system while  
WARNING  
the engine is running or when it is started.  
Operating fluids and some materials in the engine  
compartment are highly flammable and can cause  
fire and serious injury!  
· Never touch electrical cables or  
electrical connections of gas discharge lamps.  
· Never smoke near the engine compartment.  
· Never work near naked flames.  
shielded or sparking.  
WARNING  
There are rotating parts in the engine compartment  
that could cause serious injury.  
· Never spill operating fluids on the motor. These  
could ignite on contact with hot engine parts  
and cause injury.  
Never put your hand into the fan  
of the radiator or in the area of the radiator.  
Touching the rotor blades can cause serious injury.  
The fan is activated depending on the temperature  
and can start automatically, even with the ignition  
off and the key out of the ignition lock.  
· When you have to carry out work on the fuel system  
or electrical system, note the following:  
— Always disconnect the 12 volt battery.  
Make sure the vehicle is unlocked when  
you disconnect the 12 volt battery,  
· If you have to carry out work while the engine is  
starting or running, take into account that  
rotating parts (eg poly-V belt, alternator or radiator  
fan) and the ignition system high-voltage currents  
represent a mortal danger. Always act with the  
utmost caution.  
otherwise the anti-theft alarm will go off.  
— Never carry out work near heaters, continuous  
heaters or open flames.  
· Always have on hand a fire extinguisher that is  
working and has been checked.  
— Always make sure that no part of your body,  
jewelry or tie you are wearing, clothing if it is  
loose, or hair if it is long can get caught in the  
rotating parts of the engine. Before working in  
WARNING  
the engine compartment, remove any jewelry  
When replenishing or changing operating fluids,  
or necktie you may be wearing, tie up your hair  
if it is long, and fasten loose-fitting clothing to  
prevent it from becoming entangled in engine  
parts.  
make sure you pour the correct fluids into the correct  
fill ports. Using the wrong operating fluids can cause  
serious malfunctions and engine damage.  
Operating fluids escaping from the vehicle  
pollute the environment. Thus,  
Look regularly under the vehicle. If there are stains  
of operating fluids on the floor, go to a specialized  
workshop and have the vehicle checked. If any  
operating fluid leaks out, dispose of it properly.  
— Never step on the accelerator without paying  
attention, always do so with the utmost  
caution. The vehicle could start moving even  
with the electronic parking brake engaged.  
· Never leave any objects in the engine compartment,  
e.g. eg, rags or tools. These objects could cause  
functional failure, engine damage and fire.  
316  
check and reset  
Prepare the vehicle for work in  
Open and close the engine hood  
the engine compartment  
checklist  
Before carrying out work in the engine compartment,  
always carry out the following operations in the order  
indicated ÿ :  
ÿ Place the vehicle on level and firm ground, taking the  
necessary safety precautions.  
ÿ Depress the brake pedal and hold it down until you switch  
off the ignition.  
ÿ Engage the electronic parking brake  
co ÿ p. 185. ÿ  
Place the gear lever in neutral ÿ p. 146 or selector lever in  
Fig. 228 In the footwell area on the driver's side:  
position P ÿ p. 148.  
bonnet release lever.  
ÿ Switch off the ignition ÿ p. 142. ÿ Take the  
vehicle key out of the vehicle and keep it outside the vehicle  
so as not to accidentally start the combustion engine ÿ p.  
142. ÿ Wait for the engine to cool down sufficiently. ÿ  
Keep children and others at all times  
away from the engine bay.  
ÿ Make sure the vehicle cannot start moving unexpectedly.  
WARNING  
For your own safety, do not ignore this important checklist,  
otherwise accidents and serious injuries may result.  
Fig. 229 Above the radiator grille: bonnet actuation  
lever.  
· Always follow the instructions in the checklist and always  
observe the generally valid safety measures.  
open engine hood  
— Before opening the engine hood, make sure that the  
wiper arms are above the windshield ÿ .  
— Open the driver's door and pull the release lever in the  
direction of the arrow ÿ fig. 228. The engine bonnet is  
released from the latch carrier lock by the force of a spring  
ÿ .  
— Raise the hood, press the operating lever  
ment and open the bonnet fully ÿ fig. 228.  
The hood is held open by the pressurized gas spring.  
Close the engine hood  
— Pull the engine hood down until it  
3 G 0 0 1 2 7 6 0 A H  
the resistance of the pressurized gas spring ÿ .  
in the engine bay  
317  
— Drop hood into latch holder lock  
from a distance of approx. 20 cm (8 inches).  
Don't press it below!  
display indication  
If the engine hood does not close properly, lift it  
up again and close it again.  
When the hood is closed tightly it is flush with the  
adjoining parts of the bodywork. The bonnet is no  
longer highlighted on the instrument panel display or  
the display goes out ÿ p. 318.  
WARNING  
If the bonnet is not properly closed, it could open  
unexpectedly while driving, thus impeding forward  
visibility.  
This can lead to accidents and serious injuries.  
· After closing the engine hood, make sure that the  
lock has been properly engaged in the lock  
holder. The engine hood must be flush with the  
adjoining parts of the bodywork.  
Fig. 230 On the instrument panel display: bonnet open  
or not closed properly (schematic representation).  
If the bonnet is open or not properly closed, it is  
indicated on the instrument panel display with a  
symbolic representation ÿ fig. 230.  
· If while driving you notice that the engine hood is  
not closed correctly, stop the vehicle immediately  
and close the hood.  
Do not continue the march! If necessary, lift from  
the engine hood again and close it again.  
· Open or close the engine hood only when there is  
no one in the area of its travel.  
The display is also displayed with the ignition  
switched off and goes out a few seconds after the  
vehicle has been locked with the doors closed.  
WARNING  
· To prevent damage to the engine hood and  
wiper arms, open the bonnet only when the wiper  
arms are off and the wiper arms are above the  
WARNING  
Ignoring the displayed warnings could result in  
the vehicle being stopped in traffic, and could  
result in accidents and serious injuries.  
windscreen.  
· Before starting the journey, always place the  
wiper arms on the glass.  
Never ignore warning signs  
Inc.  
· Stop the vehicle as soon as possible and  
guro.  
The symbolic representation may vary  
depending on the version of the instrument panel.  
cough.  
Operating fluids and media  
All fluids and operating media, such as tires,  
engine coolant or vehicle batteries, are subject to  
continuous development. In the case of combustion  
engines, also timing belts, engine oils and spark  
plugs, among others. Therefore, come  
318  
check and reset  

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