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.

Switch on the electronic parking brake Braking, stopping and parking Brakes Parking .

Select the neutral position or move the selector lever to P Changing gear Changing gear Automatic gearbox see Automatic gearbox_0 Automatic gearbox see Changing gear_0 Automatic gearbox Manual gearbox see Changing gear_0 Manual gearbox .

Stop the engine and remove the key from the ignition Starting and stopping the engine Engine and ignition Ignition see Engine and ignition_0 .

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
Preparing the vehicle for working in the engine compartment
Opening and closing the bonnetRemoving and installing air distribution flap control motor -V428-, RHD
vehicles
Special tools and workshop equipment
required
Vehicle diagnostic tester
First carry out the following work:
–
Switch off all electrical consumers.
–
...
Assembly overview - radiator cowl and radiator fan
1 -
Bolt
5 Nm
2 -
Radiator cowl
Removing and installing
→ Chapter
3 -
Radiator fan -V7-
Removing and installing
→ Chapter
...
Fastening rings
Fig. 99 In the luggage compartment: fastening
rings
First read and observe the introductory information
and safety warnings You will find fastening rings at the front and rear of
the luggage compartment which can be used to secure luggage (arrow).
Some fastening rings have to be fold ...