M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

ADS Airmatic Malfunction

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Old 06-24-2019, 03:03 PM
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ADS Airmatic Malfunction

Has this warning popped up for anyone here?

History: Last month I found the entire front end drooped down. I thought the airbags blew in the front. It turned out to be the right rear ride height sensor snapped off. All was well. Everything worked perfectly.

3 weeks after I get this warning and the car is 1" higher all around and locked in sport mode. Can't switch it to comfort or ADS. If I press the raise button it works and compressor kicks in and raises the truck. When I press to drop it it does but takes much much longer. After a few restarts it went away for 2 weeks.

5 weeks after its come back with the same symptoms. But constant now. Went away on two starts but once restarted it came back.

Has this happened to anyone?
Old 06-24-2019, 06:05 PM
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ML420 W164 (2009)
Get a reader that can deal with Mercedes Codes.

That (above) is a link to an example. It may provide some clues.
Old 06-25-2019, 03:38 AM
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I don't have Airmatic, but how did the front end drop when the left rear sensor was the problem?
Old 06-25-2019, 01:17 PM
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Originally Posted by Maj. Dundee
I don't have Airmatic, but how did the front end drop when the left rear sensor was the problem?
No idea bud. But that's what happened. We just put on a new sensor in the back and it all leveled off.

UPDATE: Now its all working fine. Lets see how long that lasts. It will come back for sure.

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