Volkswagen Polo Service & Repair Manual: A/C Technology Basic Principles

Additional Information Sources

Technical Service Handbook outlining action to be taken to rectify current problems. For the repair manual for model-specific repair work. Refe ...

Physical Principles

The four known states of water also apply to air conditioning system refrigerants. 1 -  gaseous (invisible) 2&n ...

Other materials:

Indicator lamp
First read and observe the introductory information and safety warnings  Lit up Possible cause Cruise control system (CCS) is controlling the speed. Several warning and indicator lamps will light up briefly as a functional check whe ...

Warning lamp
First read and observe the introductory information and safety warnings Lit up Possible cause Solution At least one vehicle door is opened or not properly closed. Do not drive on! Open the appropriate vehicle door and then c ...

4-Pin Heated Oxygen Sensor (HO2S), Removing and Installing
  Note Do not repair the heated oxygen sensor wires. Repairing may result in malfunctions. Use the faulty sensor as a guide for installing all of the accompanying attachments, cable ties or marking bands. ...