First read and observe the introductory information
and safety warnings
The underside of the vehicle is coated to protect it from corrosion and damage. The protective coating on the underside of the vehicle could be damaged when driving. Volkswagen therefore recommends that the protective coating on the underside of the vehicle and on the running gear should be checked regularly and repaired if necessary.

CAUTION
De-icing the door lock cylinders
Cleaning the engine compartmentChecking cooling system for leaks
Special tools and workshop equipment
required
Cooling system tester -V.A.G 1274 B-
Adapter for cooling system tester -V.A.G ...
Vibration, conducting a road test before balancing wheels
If a customer brings a vehicle to the workshop complaining
about “vibration”, a road test is essential prior to balancing
the wheels.
This will give you information about the nature of the
vibration.
...
Removing and installing rear side airbag crash sensor -G256-/-G257-
Removing
WARNING
Observe safety instructions for
pyrotechnic components → Chapter.
...