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Cleaning and maintenance -> Preparation for working in the engine compartment for Your Volkswagen Up 4 Door First Generation (2011-2019)

The vehicle engine management will automatically adapt to the different natural gas qualities. Both  
natural gas qualities can therefore be mixed in the fuel tank. You do not need to empty the tank  
before refuelling with a different grade.  
Natural gas  
The vehicle can run on natural gas. Further information is available from your local Volkswagen  
dealership.  
Safe handling of natural gas  
If you can smell gas or think there may be a leak in the natural gas system ⇒  
:
Stop the vehicle immediately.  
Switch off the ignition.  
Open all the doors to fully ventilate the vehicle.  
Extinguish cigarettes immediately.  
Remove items that could cause sparks or fire from the vehicle or switch them off.  
Do not drive on if you can still smell gas.  
Seek expert assistance. Have the fault rectified.  
WARNING  
Ignoring the smell of gas in the vehicle or when refuelling can cause serious injuries.  
Take any necessary action.  
Leave the area of risk.  
Contact the emergency services if necessary.  
WARNING  
Your vehicle is not suitable for use with Liquefied Natural Gas and must not be filled up or  
driven with Liquefied Natural Gas. Liquefied Natural Gas can cause an explosion in the  
natural gas tank and serious injuries as a consequence.  
Have the natural gas system checked regularly according to the service schedule by a  
qualified workshop.  
Cleaning and maintenance  
In the engine compartment  
Preparation for working in the engine compartment  
Introduction  
This chapter contains information on the followingsubjects:  
⇒ Preparing the vehicle for working in the engine compartment  
⇒ Opening and closing the bonnet  
Always park the vehicle on a level and stable surface before carrying out any work in the engine  
compartment.  
The engine compartment of a motor vehicle is a hazardous area. Never carry out any work on the  
engine or in the engine compartment if you are not familiar with the requisite procedures and  
general safety requirements, or if you only have access to incorrect operating equipment, service  
fluids, and unsuitable tools ⇒  
. The work should be carried out by a qualified workshop if you are  
uncertain. Serious injuries can be caused if work is carried out incorrectly.  
Additional information and warnings:  
Exterior views ⇒ Exterior views  
Windscreen wiper/washer ⇒ Windscreen wiper and washer  
Starting and stopping the engine ⇒ Starting and stopping the engine  
Brake fluid ⇒ Braking, stopping and parking  
Checks when filling the tank ⇒ Filling the tank  
Engine oil ⇒ Engine oil  
Engine coolant ⇒ Coolant  
Battery ⇒ Vehicle battery  
Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs  
and renewal of parts  
WARNING  
Unintentional vehicle movements during service work can cause serious injury.  
Never work underneath a vehicle if it is not secured against rolling away. If you are  
working underneath the vehicle while the wheels are on the ground, the vehicle must be  
on a level, the wheels must be blocked and the vehicle key must be removed from the  
ignition lock.  
If you have to work underneath the vehicle, use suitable stands to provide extra support  
for the vehicle. The vehicle jack is not sufficient for this task and can fail, which can lead to  
serious injuries.  
The start/stop system must have been deactivated.  
WARNING  
The engine compartment of any motor vehicle is a dangerous area. Serious injuries can be  
sustained here.  
The utmost care and attention must be paid when carrying out any work and you must  
follow the general safety rules. Never take any risks.  
Never do any work on the engine or in the engine compartment unless you know exactly  
how to carry it out. If you are uncertain of what to do, the work should be carried out by a  
qualified workshop. Serious injuries can result from work that has not been carried out  
properly.  
Never open the bonnet if you see steam or coolant escaping from the engine  
compartment. Hot steam or coolant can cause serious burns. Always wait until you can no  
longer see or hear steam or coolant coming from the engine compartment.  
Always allow the engine to cool down before opening the bonnet.  
Hot parts of the engine or exhaust system can burn the skin.  
Before opening the bonnet once it has cooled down:  
- Apply the handbrake fully and move the selector lever to position N or move the  
manual gear lever to the neutral position.  
- Remove the vehicle key from the ignition lock.  
- Always keep children away from the engine compartment and never leave the  
vehicle unattended.  
The engine cooling system is under pressure when the engine is hot. Never open the cap  
of the coolant expansion tank when the engine is hot. Coolant may spray out and cause  
serious burns and injuries.  
- After cooling, turn the cap slowly and very carefully anticlockwise while exerting  
some downwards pressure on the cap.  
- Always protect the face, hands and arms from hot coolant or steam with a large,  
thick cloth.  
When refilling, do not spill any service fluids on engine components or on the exhaust  
system. The spilt service fluids can start a fire.  
WARNING  
High voltages in the electrical system can cause electric shocks, burns, serious injuries and  
death!  
Never short circuit the electric system. The vehicle battery could explode.  
Please note the following guidelines to help reduce the risk of an electric shock and  
serious injuries while the engine is running or being started:  
- Never touch the electrical wiring of the ignition system.  
WARNING  
There are rotating components in the engine compartment that can cause serious injury.  
Never place your hand near or directly in the radiator fan. Touching the rotary blades can  
result in serious injuries. The fan is temperature-controlled and can start automatically,  
even if the engine has been switched off and the vehicle key has been removed from the  
ignition lock.  
If any work has to be performed when the engine is started or with the engine running,  
there is an additional, potentially fatal, safety risk from the rotating parts, such as the drive  
belts, alternator, radiator fan, etc., and from the high-voltage ignition system. Always be  
particularly careful.  
- Always ensure that no body parts, jewellery, ties, loose items of clothing or long hair  
can be caught up in rotating engine components. Before starting work, remove any  
jewellery and ties, tie up long hair and pull clothes in tightly to avoid them getting  
caught in the engine compartment.  
- Always depress the accelerator carefully and never without due consideration. The  
vehicle can start to move even if the handbrake is applied.  
Always ensure that you have not left any objects, such as cleaning cloths and tools, in the  
engine compartment. Any forgotten items can cause malfunctions, engine damage and  
fires.  
WARNING  
Operating fluids and some materials in the engine compartment are highly flammable and can  
cause fires and serious injuries!  
Never smoke while working on the vehicle.  
Never work near naked flames or sparks.  
Never spill fluids onto the engine. They could ignite on hot engine components and hence  
cause injuries.  
Please note the following when carrying out any work on the fuel system or the electrical  
system:  
- Always disconnect the vehicle battery.  
- Never work in the direct proximity of heating systems, water heaters or any other  
open flames.  
Always have a fully functional and tested fire extinguisher to hand.  
NOTICE  
When refilling or changing operating fluids please ensure that the fluids are in the correct  
container. Incorrect operating fluids can cause serious functional problems and engine  
damage.  
Service fluids leaks are harmful to the environment. So you should regularly check the  
ground underneath your vehicle. If there are spots of oil or other fluids on the ground, the vehicle  
should be inspected by a qualified workshop. Any spilt service fluids must be disposed of properly.  
Preparing the vehicle for working in the engine compartment  
First read and observe the introductoryinformation and safety warnings⇒  
Introduction  
Checklist  
The following steps should always be carried out in the specified order before working in the  
engine compartment ⇒  
:
Park the vehicle on a level and stable surface.  
Depress and hold the brake pedal until the engine has stopped.  
Apply the handbrake firmly Braking, stopping and parking.  
Select the neutral position or move the selector lever to N Changing gear.  
Stop the engine and remove the vehicle key from the ignition Starting and stopping the  
engine.  
Allow the engine to cool sufficiently.  
Children and other people should be kept well away from the engine compartment.  
Ensure that the vehicle cannot roll away unexpectedly.  
WARNING  
Always follow the instructions in the checklist and observe the general safety procedures.  
Ignoring any of the items on this important safety checklist can lead to severe injuries.  
Opening and closing the bonnet  
Fig. 119 A: release lever in the footwell on the driver side B: release lever on the bonnet  
Fig. 120 C: release lever at the bonnet stay D: bonnet secured with the bonnet stay  
First read and observe the introductoryinformation and safety warnings⇒  
Introduction  
Opening the bonnet  
Ensure that the windscreen wiper arms are positioned on the windscreen before opening the  
bonnet ⇒  
.
Pull the release lever ① in the direction of the arrow ⇒ Fig. 119 A. The bonnet is released from  
its lock by a spring mechanism ⇒  
.
Lift the bonnet slightly and at the same time push the release lever ② B in the direction of the  
arrow to open the bonnet completely.  
Take the bonnet stay out of the holder ③ C on the bonnet and insert it in opening ④ D (arrow).  
Closing the bonnet  
Lift the bonnet slightly ⇒  
.
Take the bonnet stay out of the holder ④ D and insert it in the opening in the bonnet ③ C.  
Let the bonnet drop into the catches from a height of approximately 20 cm – do not press it  
down!  
If the bonnet is not closed, open it again and close it properly.  
The bonnet sits flush with the body parts around it when it is properly closed.  
WARNING  
If the bonnet is not properly closed, it could open suddenly while you are driving and  
completely obscure your view of the road. This can lead to accidents and serious injuries.  
After closing the bonnet, always check that it is properly secured. The bonnet must be  
flush with the surrounding body panels.  
If you notice that the bonnet is not properly closed while the vehicle is in motion, stop the  
vehicle as soon as possible and close the bonnet.  
Therefore the bonnet should only be opened or closed when you are sure that nobody is in  
its path.  
NOTICE  
The bonnet should only be opened when the wiper arms are flush to the windscreen in order  
to avoid damage to the bonnet and the windscreen wiper arms.