General Repair Information: Overview
Before working on electrical system (wiring), remove relevant fuse(s).
Disconnect the battery before performing any electric welding on the vehicle. Refer to BATTERY .
The refrigerant circuit for the Air Conditioning (A/C) system may only be discharged and opened when:
- it is necessary due to safety precautions. Refer to SAFETY PRECAUTIONS WHEN HANDLING REFRIGERANT ,
- it is necessary to remove other components,
- refrigerant circuit components for the A/C system must be removed or replaced.
When performing all other usual vehicle repair work, the refrigerant circuit of the A/C system should remain closed.
The connections for the sensors/switches described in this repair information are fitted with a valve which closes automatically when the switches are unscrewed. These switches can thus be replaced in any Audi and Volkswagen workshop even though the refrigerant circuit is fully charged.
If it is necessary to discharge and open the refrigerant circuit for the A/C system for certain repair work on the heating and air conditioning system, this is described in the respective work procedure. Certain tools are required to discharge the refrigerant circuit. These work procedures may also only be performed by trained personnel .
If the necessary tools are not available or no qualified personnel is present, do not perform repairs on the refrigerant circuit for the A/C system that require the refrigerant circuit to be discharged and opened. If necessary, the vehicle must be transferred to a shop that has the necessary tools and equipment and where the work can be performed by qualified personnel. There the refrigerant circuit can be discharged and opened according to the legal specifications.