First read and observe the introductory information
and safety warnings
Volkswagen recommends the use of genuine Volkswagen spray with lubricating and anti-corrosive properties to de-ice the lock cylinders.

NOTICE
Care of rubber seals
UndersealReceiver
The receiver collects the liquid droplets and directs them
in a continuous stream to the expansion valve. Moisture which
has entered the refrigerant circuit during assembly is collected
by the dessicant bag in the receiver.
Note
...
Checking function and voltage supply of the fuel pump, engine code CWVA
Special tools and workshop equipment
required
Removal wedge -3409-
Multimeter e.g. hand-held multimeter -V.A.G 1526E-
...
Adjusting glass panel
Special tools and workshop equipment
required
Height-adjustment of glass panel
Torque wrench -V.A.G 1783-
–
Loosen securing bolts for ...