Richard Moakes
Senior Member
- Joined
- May 19, 2002
- Messages
- 2,187
- Reaction score
- 1,132
- Location
- Newton Abbot, Devon, UK
- Your Mercedes
- CL500; ML500
The aircon on my W164 is behaving strangely, sometimes I have to drive for a significant number of miles before it will kick in.
Lots of forum reading later, it seems these variable displacement compressors can have issues with a sticking electronic control valve, and in fact my car is logging a fault code for short/excessive current to the compressor which is a smoking gun.
Has anyone replaced the control valve? I can see it’s a regular fix in the VW world, or am I best replacing the whole compressor?
If it’s a compressor change, other than a genuine Mercedes, what’s the opinion on Hella/Behr/Denso compressors as a direct replacement?
Lots of forum reading later, it seems these variable displacement compressors can have issues with a sticking electronic control valve, and in fact my car is logging a fault code for short/excessive current to the compressor which is a smoking gun.
Has anyone replaced the control valve? I can see it’s a regular fix in the VW world, or am I best replacing the whole compressor?
If it’s a compressor change, other than a genuine Mercedes, what’s the opinion on Hella/Behr/Denso compressors as a direct replacement?