GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Airmatic Issues GL350

Old 10-07-2018, 02:40 AM
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2011 gl350
Airmatic Issues GL350

Hey guys,
I have a 2011 GL350 and have been having all sorts of airmatic issues. The vehicle sat uneven and finally would stop pumping air. Turned out to be a blown bag.

I replaced all 4 struts and bags (fronts Bilstein, rear Cardone).

The car still sat funky and was giving me a malfunction. I replaced the valve block and all four sensors.

Now the fronts pump up and sit fine but the rears won't go up at all.

Any thoughts on what it could be? I know I need to get my hands on a C4 to read the data. Anyone local in the bay area with one?
(Prior to getting putting in the valve block and sensors, I was getting code #5507.)

Thanks in advanced!
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Old 10-11-2018, 02:53 PM
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CLS550 - Launch Edition | GL550
Sounds like it could be a faulty relay (Green one located in the fuse box - right side of engine bay) or a bad compressor. I've swapped the compressor on my wife's GL550 and it's relatively easy for a non-mechanic to do. You have to pull the passenger wheel well cover off and it's right there. I grabbed one off eBay for around $250. In my case, her compressor developed a hairline crack in the metal casing and could not get enough pressure built up to keep the car at the proper height. It resulted in the "malfunction" icon on the dash due to overrunning the compressor. Good luck with it.
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