If your AC compressor on your Volkswagen Jetta, GTI, Golf, Passat, Tiguan is not working proper a faulty AC Compressor Control Solenoid Valve maybe the problem. This Control Valve is located on the front of the AC compressor and is secured to the compressor with a snap ring. Often times the factory valve fails and can easily be replaced rather than replacing the entire AC compressor.
Please insure your factory compressor control solenoid valve looks identical to the pictures above and is secured to the AC compressor with a snap ring and NOT a bolt
***This control valve fits MOST, NOT ALL 2006+ Volkswagen and Audi models equipped with the Sanden PXE16 or PXE14 compressor.
***NOT COMPATIBLE with vehicles with Zexel AC compressor (see below with instructions on identifying your AC compressor)