Quote:
Originally Posted by Blue4.8is
James, very interested in where this relax under the air supply tank is. could you please point it out? I found a relay for the air suspension in the truck right side compartment by the fuses ( relay #6 according to realoem ) but could not locate any other relay that you are talking about.
PS. It seems that the X5s with the air suspension in the rear only have the relay right on the air compressor but not for FULL air suspension such as my 4.8is
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Sorry, for the wait. It’s not under the pump. It’s beside the battery on the right side to rear side under a black plastic panel. Hidden from everyone. (WHY?  ) And as for the price of the BMW PC hook up it depends on how well you know your service department at BMW. I paid 500:-Swedish Kroner (about $80.00) He reset and recalibrated the hole system. And as a bonus I had him lower it!  We took a standard ride height of 710mm (28”inces) at all 4’s. Then we took a lowered ride height of 680mm at all 4’s (26 ¾ inches) then we raised it back to the standard height and manually set the values to fool the system to 740mm at all 4’s (29 1/8 inches) so the system thinks 680mm is the standard ride height of 710mm so my standard is now 680mm!  And my 4x4 ride height is 710mm and lowered all the way down to 650mm. “OBS” These are my ride heights! Yours may vary from these! So do your own measuring to find yours.
To sum things up:
4x4 height: OEM: 740mm Mine: 710mm
Standard OEM: 710mm Mine: 680mm
Lowered OEM: 680mm Mine: 650mm
P.S. make sure you are on level ground!
Use an alignment rack to do this!!!
We took the measurements from the wheel arch to the lowest point of the rim!
P.S.S. BMW online WDS: WDS BMW Wiring Diagram System - X5 E53
Last edited by James 4.8is; 05-25-2013 at 09:39 AM.
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