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  #21  
Old 01-11-2022, 02:17 PM
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https://www.youtube.com/watch?v=VYMAHjhJUPM

This video shows the arm and the link positioning. The arm, which is connected to the relay and the link is connected to the arm. Going over center means the arm is when the arm is face toward the passenger side rather than the driver's side as in the video.

https://www.youtube.com/watch?v=M_VxT6h5bQE

This video is not an E53 but the same principles and testing procedure apply.
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  #22  
Old 01-12-2022, 06:37 AM
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Thankyou soo much i will be checking all the fuses again and checking the one in glovebox this time and check my sensor arms against the videos
Whats best way to determine if the relay is good or not Ive always just replaced relays in the past if Ive believed they might be bad
Thanks john


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  #23  
Old 01-12-2022, 03:21 PM
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I don't know. In the past I have come to the conclusion a sensor is bad from the troubleshooting process of elimination. In your case, I would eliminate the compressor as the problem first. Since it currently won't run it is at least part of the problem. If you applied current directly to the compressor with all electrical connections to the compressor disconnected it should run. If you remove the main output line from the compressor you can finger check the compressor PSI output.

Once the compressor issue is resolved I would eliminate the coding as an issue. Then you can eliminate the relays as the problem by disconnecting the links and moving them so the electronics think the suspension is too low. That should cause the compressor to run.

That seems to me to be a logical order to troubleshoot. Relays aren't that costly but I try to never buy parts I don't need. As one case only, I have never changed a suspension relay in 123,000 miles. However, my X5 has been in Texas all of its life and never subjected to salt, nor does it rain that often so they are corrosion free.

Even if the compressor needs to be replaced I think there is another problem to address. It may be the relays but the symptoms could also be a leak in the system. Obviously, most likely on the side that won't rise up at all. Coincidentally, Our X5M currently has a bad air spring. At first only that side would drop down after sitting a couple of days. Then it progressed to every day and then the good side started to drop some. Finally they both started dropping all the way down. Initially, a soap test did not identify a leak. It still inflates both sides properly but won't stay there long. Yesterday, I checked again. I didn't need to do the soap test, I could hear the leak. Sometime ago I replaced the bags on our 2002 X5. They dying process was the same.
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  #24  
Old 01-12-2022, 04:53 PM
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He hasn't scanned just had "some bloke" work on it. It needs a proper scan to know what is or isn't working.
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