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

GL420 off road level 3 suspension.

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Old Apr 9, 2018 | 02:11 PM
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MGSED's Avatar
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C220 AMG Sport+ W205, GL420cdi X164
GL420 off road level 3 suspension.

Sorry folks another question from myself whos still learning about these stunning machines. I've been moving the suspension from level one to two to three, only thing is that it will go from one to two but malfunctions on two to three. But if i go from 0 to three in one go it will do it but takes a while. Any thoughts. Sorry to be a pain.
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Old Jul 2, 2018 | 04:41 PM
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2010 Mercedes GL450; 2000 Mercedes ML55 AMG; 2016 VW GLI SEL Stick!!!
Originally Posted by MGSED
Sorry folks another question from myself whos still learning about these stunning machines. I've been moving the suspension from level one to two to three, only thing is that it will go from one to two but malfunctions on two to three. But if i go from 0 to three in one go it will do it but takes a while. Any thoughts. Sorry to be a pain.
there is probably a defect somewhere in the airmatic suspension.

Either a leak in the line, a faulty compressor, faulty valve block, or even leaking shock.

I would say faulty compressor though.....it seems like it cannot create enough pressure to put it in off road height.

Also you cannot put it in three when you are driving.
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Old Jul 5, 2018 | 12:55 PM
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'08 GL 320 CDI
Agree that it certainly sounds like a faulty compressor. They get weak and can't build pressure fast enough - meaning it has to run longer than needed and overheats.
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