W164 Air Con Compressor

Richard Moakes

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Location
Newton Abbot, Devon, UK
Your Mercedes
1991 R129.066 M119.960; 2005 W164.175 M113
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?
 

LostKiwi

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Midlands / Charente-Maritime
Your Mercedes
'93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
If you replace the compressor I bought a Hella for my 210 which was a bargain at £152 and it's still working a treat.
 

tony jr

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May 5, 2009
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Nottingham
Your Mercedes
GL320 X164 2007
Try checking the wires going to the compressor you might find they have nearly snapped due to the constant vibration when the compressor kicks in.


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John Laidlaw

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Wirral
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BMW 530d X Drive Tourer M Sports
AFAIK MB use Hella compressors
 
OP
Richard Moakes

Richard Moakes

Senior Member
Joined
May 19, 2002
Messages
1,748
Reaction score
201
Location
Newton Abbot, Devon, UK
Your Mercedes
1991 R129.066 M119.960; 2005 W164.175 M113
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