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#1
07-19-2012, 08:21 AM
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So now I have done several tests. First I disconnected the battery for 10 minutes. no changes. Then I arranged the relay and connect it again, no change. Then I connected the diagnostic device. The controller detects any height sensors.
The computer measures a change in nominal ride height under load only the front left(when I step on the footboard ). Front right, rear right, rear left are always 0mm difference to the nominal height. Ok, now I think of course the height sensors are faulty. But why do they still change their voltage?  
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#2
07-19-2012, 09:38 AM
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Very strange. Did you check the height sensors. Are they damaged, or maybe bent on their mounting locations.
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#3
07-19-2012, 12:41 PM
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The air supply control unit is located in the spare tire area.
Always good to check the sensor units first, especially if the suspension has been fully extended for a tire change or other service work. The arms can reverse themselves and cause the system to show as inactive. The sensor units are attached to both sides of the rear suspension and passenger side of the front suspension. Note that once corrected the inactive reading does not go out until you have driven a mile or so.
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#4
07-19-2012, 04:10 PM
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Interesting what you say.
I just found out with the tester, the voltage increases with decreasing right front bodywork. Front right is from the voltage with decreasing body. Exactly in the opposite direction. IS IT NORMAL? Rear axle work both sensors in one direction.
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#5
07-21-2012, 03:44 AM
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Does anyone know if the voltage decreasing at the front suspension changes differently? I mean, on one side the voltage get higher when I lower the car. On the other side voltage get low when I lower the car. ???
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#6
08-17-2017, 01:23 AM
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OK so I have all the levels set and every corner gets there except the front right.... When the compressor is running the front right is inflating... All the time. But it does not loose air?? It's like there's a leak in the valve block that is allowing the compressor pressure to leak through to the front right bag..
This is giving me a code for pressure remaining consistent (because the pressure is going into the front right when all the valves are closed.... (viewed in inpa) When the code is cleared and the pump starts again... The front right strut is inflating....
__________________
2004 X5 4.8IS
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