Hello everyone, my rear suspension dropped and I replaced air compressor, valve block, rear height sensors, air filter hose under passenger side fender. I am all out ideas. When I took my car to independent MB service he said right side height level sensor was bad. When I drove off from service parking lot rear went bad again. Do anybody have any idea what may cause this problem? all parts are replaced including relay!!!.
GL 450 rear suspension problem
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Now, car's front is risen, rear is flat. When I try to lower the car, it reads "Being lowered" but no action. I replaced battery and auxiliary battery too today. I'll check rear sensors which I used after market from eBay. Should I OEM only and so should I do anything else?
1998 MB E300TD, 1997 MB E36 AMG, 2001 MB E55 AMG. 2011 BMW 335d
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Blew new Arnott air spring apart via SDS on fill...
I have a 2009 GL450 and initial issue was right rear corner was deflated. I ordered 2 arnott rear air springs to replace each side. After replacing the right rear, I followed the Arnott procedure of lowering the vehicle to level, leaving the corner jacked up enough to not put all the weight on...
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Post #5.
Double check your level sensor.
I recently went through same scenario - changed compressor, compressor block, rear airbags, height sensors. The problem was one of the rear height sensor beams was set wrong direction. The horizontal part needs to point toward the outside not inside. A scanner would show voltage out or range and/or height data at +5" so the computer lowers rear as low as possible. After this is corrected, you must use scanner tool to manually calibrate each wheel height to -1.2". After you do that you must set auto calibration which takes up to 10 mins. It will then store the proper ride heights.
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