Rear air suspension sag. ML 320.
Thread Starter
Junior Member
Joined: Mar 2015
Posts: 23
Likes: 0
From: Australia
ML320
Rear air suspension sag. ML 320.
We have a 2007 ML320 with a problem that I would appreciate some advice with.
The air suspension on one (rear) wheel has a tendency to 'sag' approx 2" if the vehicle is parked for 2 hours or more. It immediately re-establishes height and correct suspension once the door is unlocked or opened. It also emits a single 'hissing' noise over the affected wheel at the same time. It is then fine for driving and doesn't show again until it has been parked for a couple of hours or more. I have been advised that I may need the shock absorber and airspring assembly replaced.
Has anyone else any similar history with their car and are their any other known possible causes such as a leaking valve etc?
Thank you,
Peter.
The air suspension on one (rear) wheel has a tendency to 'sag' approx 2" if the vehicle is parked for 2 hours or more. It immediately re-establishes height and correct suspension once the door is unlocked or opened. It also emits a single 'hissing' noise over the affected wheel at the same time. It is then fine for driving and doesn't show again until it has been parked for a couple of hours or more. I have been advised that I may need the shock absorber and airspring assembly replaced.
Has anyone else any similar history with their car and are their any other known possible causes such as a leaking valve etc?
Thank you,
Peter.
Newbie
Joined: Dec 2008
Posts: 12
Likes: 0
From: Sweden
ML320 CDI 2007, 300E 24V Cab 1993
Airspring leak
Hi, you have a leak in the airspring, my advice is not to wait to long to change it, otherwise you may burn out the compressor. No need to change the shock absorber.
/Mike
/Mike
Thread Starter
Junior Member
Joined: Mar 2015
Posts: 23
Likes: 0
From: Australia
ML320
Sagging rear suspension
Thanks mike, I have had both airbags and shock absorbers changed. Problem fixed. Not cheap though.
Out Of Control!!
Joined: Aug 2010
Posts: 12,516
Likes: 628
From: Charlotte NC area
2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
LOL, the airbags are 30 minuets under the car, the shocks are about 2 hours inside taking the interior apart.
If they were not leaking they were not bad.
If they were not leaking they were not bad.
