Pressure Relieve Valve On A/C Compressor, Checking

WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

There is a risk of frostbite through refrigerant. The pressure relief valve drains refrigerant when the engine is running and the refrigerant circuit pressure is too high.

Frostbite on the skin and other parts of the body is possible.

- Wear protective gloves.

- Wear protective eyewear.

- Turn the engine off.

Function: Protects the refrigerant circuit against excessive pressure
The pressure relief valve has operated when refrigerant oil is found nearby.

Check the pressure relief valve -1- on vehicles with A/C compressors by Denso and 6/10-cylinder engine.

Fig 1: Identifying Pressure Relief Valve

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Check pressure relief valve -arrow- on vehicles with A/C compressor by Denso.

Fig 2: Identifying Pressure Relief Valve

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.