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Old 11-18-2011, 11:52 AM
e39_touring e39_touring is offline
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Quote:
Originally Posted by Neil48is View Post
Yeah i pretty much tried everything you have before i replaced the compressor.

2 New Arnott bags
2 Front level sensors
New Relay

And then replaced the compressor,unfortunately for me i also had to replace the suspension control module,i've got around $3K in the suspension so far,touch wood its going fine now.
OK, I'm still keeping my fingers crossed that I don't need a new compressor. Here's what I tried yesterday:

Cleared the trouble code. Started the car and changed the height several times - access/normal/high. The compressor ran a lot. Drove around a couple of miles. Reconnected and read accumulator pressure - it was 14.6 bar. That does seem to be a little low as I understand operating pressure is 15.7 bar + or - 0.7. Using INPA, I ran the compressor and increased pressure to 16.4 bar, but I did notice that after playing with it a lot, it heats up rather quickly.

With the pressure properly set, my hope is that the compressor won't need to run as much and won't trip the code (or at least not often). I would also think that the code I would be seeing is 'compressor overtemp' or something like that versus the 'accumulator filling requested, but pressure does not increase'.

Neil, why did you end up replacing your control module, too?
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