Volkswagen Golf Service & Repair Manual: Engine control unit

Removing and installing lambda probe 1 before catalytic converter -GX10-/lambda probe 1 after catalytic converter -GX7-

Lambda probe 1 before catalytic converter -GX10- consists of Lambda probe -G39- Lambda probe heater -Z19- ...

Removing and installing engine control unit -J623- (with metal locking plate)

Special tools and workshop equipment required     Hot air blower -VAS 1978/14A--1- with nozzle -2- fr ...

Other materials:

Refrigerant R134a
Air conditioners in vehicles use the evaporation and condensation process. The system contains a liquid with a low boiling point, called the refrigerant. The refrigerant used is tetrafluoroethane R134a, which boils at -26.5°C with vapou ...

Removing and installing headlight range control regulator -E102-
  Note The removal and installation procedures are described for LHD vehicles. Removal and installation for RHD vehicles are similar. Removing –  Remove rotary light switch -EX1- →&n ...

Removing and installing window regulator motor -V14-/-V15-
  Special tools and workshop equipment required       Note    Removal and installation are only described for the left window regulator motor. Removal ...