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  #1  
Old 12-07-2019, 03:17 AM
Howquick Howquick is offline
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Mein Auto:
Ongoing air suspension issue....

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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  #2  
Old 12-07-2019, 05:03 AM
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Doug Huffman Doug Huffman is offline
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Mein Auto: CPO2012 X5 35d M57(E70)
Here is all of the 'detail' that there is short of the technical description.

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

https://www.newtis.info/tisv2/a/en/e...ontrol/Xs0tfmb
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Old 12-07-2019, 05:46 PM
ard ard is offline
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maybe working on the diff someone hosed the height sensor?
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Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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  #4  
Old 12-07-2019, 06:40 PM
Howquick Howquick is offline
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Thanks guys....yes...I’m beginning to think along those lines Ard.
Do you know if there is a way for me to test the sensors?
They ‘look’ fine....but who knows if they’re actually working.
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Old 12-07-2019, 11:06 PM
ard ard is offline
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Location: Sierra foothills, California USA
 
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Mein Auto: '12 X5 35d/E39M5/996TTX50
Naw. Id dig around on newtis.info...look at schematics...circuit description...see if I could make sense of the sensor function.

Looks like 3 pins...a standard potentiometer. A+B=C in terms of resistance.

HOWEVER... the links Doug posted show there are signfcant computer functions that are accessible using a BMW computer (ie ISTA, etc). Could be something simple three....
__________________
Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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  #6  
Old 12-09-2019, 05:22 AM
Howquick Howquick is offline
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Mein Auto:
Fixed!

Well...I managed to get an old laptop off a mate and load Inpa. I already had the cable...as I bought it a while ago with the intention of connecting to my car.
So...I checked out the suspension and found the inferential ‘modes’.
Shipping, production, garage, energy saving, low tolmode.
It appears ‘production mode’ is active.
So...I tried toggling it off/on.
Didn’t seem to change.
So then I toggled the other modes...and I think it was ‘garage mode’ that did it...I just came good and the air bags filled up.
So very happy!!!
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