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Old 12-07-2019, 03:15 AM
Howquick Howquick is offline
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Join Date: Dec 2019
Posts: 8
Mein Auto:
Air suspension

Hey all, I'm posting this in the general section because I'm hoping to get a bigger audience. Can 'anyone' tell me exactly how the air suspension setup works..in detail.
After having the diff in my e70 recently...I realized the rear looked a bit low. I measured it and both side are 50mm lower than spec.
The air suspension system is not working.
I've removed the compressor and bench tested it...all ok.
I measured voltage at the 3 plugs going to the compressor, solenoid and valve block....nothing.

Any thoughts/ideas???
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Old 12-07-2019, 05:00 AM
Doug Huffman's Avatar
Doug Huffman Doug Huffman is offline
Nuclear engineer
Location: Washington Island, Wisconsin, thru Death's Door
 
Join Date: Apr 2015
Posts: 13,673
Mein Auto: CPO2012 X5 35d M57(E70)
Here is all the 'detail' that there is short of the BMW technical description.

https://www.newtis.info/tisv2/a/en/e...ontrol/Xs0tfmb
https://www.newtis.info/tisv2/a/en/e...ystems/1odeF1T
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