A/C Compressor Pressure Relieve Valve, Checking

WARNING: This page is about a different car, the 2011 Volkswagen CC, 2010 Volkswagen CC, and 2009 Volkswagen CC. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

There is a danger of ice-up.

Check valve drains coolant when engine is running and pressure in coolant circuit is too high.

Turn engine off.

Function: protects refrigerant circuit against excessive pressure.

Checking Pressure Relief Valve On A/C Compressor (Sanden)

Fig 1: Identifying Pressure Relief Valve On A/C Compressor (Sanden)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

The pressure relief valve -arrow- has operated when refrigerant oil is found in the close vicinity.
In this case, vehicle must be taken to an authorized Volkswagen workshop.

A/C Compressor Pressure Relief Valve

Fig 2: Identifying A/C Compressor Pressure Relief Valve

Courtesy of VOLKSWAGEN UNITED STATES, INC.

The pressure relief valve -arrow- has operated when refrigerant oil is found in the close vicinity.
In this case, vehicle must be taken to an authorized Volkswagen workshop.