2022 S500 Front Air Suspension Drop to Ground





Tell them to check for soap bubbles around the air struts and air lines. The leak is there, they just need to look harder for it. Don't let them tell you it's fine.
OEM or are there better aftermarket replacement units?
I know I'm thinking way too far in advanced, but I want to know what to expect when the airmatic gives up.
Tell them to check for soap bubbles around the air struts and air lines. The leak is there, they just need to look harder for it. Don't let them tell you it's fine.
Last edited by nearwater4me; Sep 18, 2025 at 12:41 PM.

I wanted to throw out a possible theory and see if it made any sense: What if I were to pull into a parking space while the front end was elevated, and I were to have "barely" put some of the front-end frame above the curb AND the car sensed that in the current position the front-end was high. Would it then start releasing air in the front to lower it but since it might be hung up on the curb it would just keep deflating trying to lower? I did not notice "scaping" or a sudden thud when departing but it did seem immediately low and I got the dashboard warning. Thoughts?
OEM or are there better aftermarket replacement units?
I know I'm thinking way too far in advanced, but I want to know what to expect when the airmatic gives up.
Great advice. I'd make them look harder as well.

I wanted to throw out a possible theory and see if it made any sense: What if I were to pull into a parking space while the front end was elevated, and I were to have "barely" put some of the front-end frame above the curb AND the car sensed that in the current position the front-end was high. Would it then start releasing air in the front to lower it but since it might be hung up on the curb it would just keep deflating trying to lower? I did not notice "scaping" or a sudden thud when departing but it did seem immediately low and I got the dashboard warning. Thoughts?
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If the car drove into the curb slightly, causing the front end to rest against the curb or sidewalk surface, the front end would slightly lift up.
The car would then sense (thru the level sensor) the front is slightly lifted, and try to level the vehicle by deflating the front bags.
The car obviously wouldn't lower because it's sitting on the curb and because the car's front doesn't lower to its intended target height, it'll continue to deflate the front bag until depleted.
Once he backs out of the parking spot, the front will drop to the floor because there's no air left in the front bags.
I guess it's feasible, but I would think there's some kind of redundancy to prevent the system from completely deflating the bags. Just a wild guess.
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repeated attempts by dealership didn't solve it. first they thought it was the height sensors near the front wheels - replaced them but didn't solve.
on one occasion thought it was fixed, but car would have the same problem intermittently.
if i tried to raise the suspension it would work... sometimes.
one time it i pulled over and found the front lip almost touching the ground... similar to the OP's comment.
see photo below.
then finally on the prior to last repair attempt i noticed the air lift was quite loud when i tried to lift.... almost a grinding sound. could definitely hear it from the exterior... and also notice from the interior.
sometimes it would make that noise when attempting to raise the suspension... but wouldn't raise at all!
finally they figured out the compressor went bad.
replaced.... no more messages, lifts without noises... so far.
3 attempts by these dealership idiots

Last edited by tonupbklyn; Oct 22, 2025 at 09:33 PM.
repeated attempts by dealership didn't solve it. first they thought it was the height sensors near the front wheels - replaced them but didn't solve.
on one occasion thought it was fixed, but car would have the same problem intermittently.
if i tried to raise the suspension it would work... sometimes.
one time it i pulled over and found the front lip almost touching the ground... similar to the OP's comment.
see photo below.
then finally on the prior to last repair attempt i noticed the air lift was quite loud when i tried to lift.... almost a grinding sound. could definitely hear it from the exterior... and also notice from the interior.
sometimes it would make that noise when attempting to raise the suspension... but wouldn't raise at all!
finally they figured out the compressor went bad.
replaced.... no more messages, lifts without noises... so far.
3 attempts by these dealership idiots

That’s slammed to the ground.
im glad they FINALLY figured it out.
altho i have yet to find users of them citing any issues like this... maybe I'm just being paranoid.
Is the airmatic a common failure point on these heavy cars? How much does it cost to replace one failed unit?

My original problem, entire front-end to the ground has not happened again and MB service found no issue, so keep fingers crossed.




I have a friend who came to my house garage to check his X6 (rear air suspension slammed) as I have ISTA software license. We couldn’t find anything wrong and it never happened again. We concluded it was probably a glitch. It’s been 8-10 weeks since then.
Last edited by S_W222; Nov 14, 2025 at 06:03 PM.









