Mercdz ML

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.

averskog

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

Mercdz ML

Thanks mike, I have had both airbags and shock absorbers changed. Problem fixed. Not cheap though.

N_Jay

Why did they change the shocks (other than to extract extra mney from you)?

texasflysuper

They would have said the old
"while we have X out we might as well change X too, you know - just in case"

That line never gets old.

N_Jay

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.

Euler

Rear air springs are an easy DIY. You have to be careful with the air line though.