Airmatic pump running constantly
Thread Starter
Newbie
Joined: Sep 2018
Posts: 1
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GL450
Airmatic pump running constantly
GL450 2009, airmatic pump is running constantly. Car does not go up or down, it is always in high position, even when car is turned off. I check air struts and they are all filled with air and sound like drum when I tap on them. All four air struts were replaced 6 months ago as one of the air strut leaked.
Senior Member
Joined: Jun 2006
Posts: 375
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From: Toronto Ont Canada
GL350
I'd say bad valve block or controller. Try to find someone with a scanner ,it'll take 5 minutes to find out what it is exactly.....try the garage who made you change 4 bags instead of the 1 actually leaking..
Last edited by georgedaman; Sep 26, 2018 at 02:06 AM.
MBWorld Fanatic!
Joined: Dec 2004
Posts: 4,268
Likes: 253
Yes, it is most likely the relay. Don’t have right in front me one now, but it is in the relay box under the hood on the pass side. It is green. Do t remember which one. Remove one at a time relays until pump stops and you will know which one is offending.
