A/C System Repair Information

A/C System Repair Information

CAUTION!
Before working on electrical system wiring, remove relevant fuses

• Before performing electric welding on the vehicle, disconnect battery.

Refrigerant circuit of A/C system must not be discharged and opened => [ Refrigerant Circuit, Draining ] Refrigerant Circuit, Draining unless this is necessary because of safety precautions (=> [ Working on Refrigerant Circuit ] Working on Refrigerant Circuit) or unless components of the refrigerant circuit of the A/C system have to be to replaced.

When performing all other usual vehicle repair work, the refrigerant circuit of the A/C system should remain closed.

Servicing operations on A/C system that are possible without opening refrigerant circuit.

Repair work on the A/C system that requires opening the refrigerant circuit => [ Refrigerant Circuit ] Refrigerant Circuit.

• The connections for the senders/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 workshop even though the refrigerant circuit is fully charged.

Service procedures that require the refrigerant circuit to be emptied and therefore cannot be performed in every Audi workshop => [ Refrigerant Circuit ] Refrigerant Circuit (to drain the refrigerant circuit, bring the vehicle to a workshop that has the necessary tools and qualified personnel => Refrigerant R134a - Servicing).

Contact Corrosion

Contact corrosion can occur if inappropriate connecting elements (bolts, nuts, washers), rivets, plugs, grommets, adhesives etc. are used.

For this reason, only connecting elements with a special surface coating, e.g. recognized by green color, are installed by manufacturer as well as non-conductive rubber, plastic parts and adhesives.

These parts, which have been tested and are aluminum compatible, are also available as replacement parts.

Only use original manufacturer's parts

Always install new parts if there is any doubt as to whether parts can be reused.

Accessories must be approved by Audi of America

Damage due to contact corrosion is not covered by warranty.