Volkswagen Golf Service & Repair Manual: Removing and installing sunlight penetration photosensor -G107-

Other controlling and regulating components

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Function of air quality sensor -G238-

The air quality sensor detects noxious substances in the ambient air (primarily petrol and/or diesel fumes). The Climatronic control unit -J255 ...

Other materials:

Checking swivel joint
Checking axial play –  Firmly pull suspension link down in -direction of arrow- and press up again.   Checking radial play –  Press l ...

Testing for leaks
Special tools and workshop equipment required Tester for brake pressure regulator -V.A.G 1310 A-     Adapter M10 -V.A.G 1310/6- Test prerequisites: ...

Before operating the air conditioning system after recharging with refrigerant
After installing a new air conditioner compressor or filling with fresh refrigerant oil (e.g. after blowing out refrigerant circuit), turn compressor pulley 10 revolutions by hand before starting engine. This will prevent damage to the air conditioner ...