S500 airmatic issues

117 · 04-03-2010, 11:02 AM

Hi guys,

My w220 s500 has what I presume to be a noisy airmatic compressor, and the car does not rise properly using button on the dash, only very slightly and the pump makes a slight grinding sound, the pump seems to be running all the time also, and emits a hum noticable in the cabin when driving....

Ocassionally the driver side rear strut also appears to settle slightly lower than the other side when the car is turned off.

Do you guys think a replacement pump can solve my problem, also can anyone recommend a good MB specialist in Devon?

Many Thanks....

James Rothwell · 04-03-2010, 11:16 AM

That will be the pump, get it replaced sooner rather than later whilst you can still drive it. Once it goes completely the car will sink down into the arches and you can't drive it. Parts from MB are about £340. I went to Olly at PCS to do mine he is in Horndean though.

BlackC55 · 04-03-2010, 11:17 AM

I suspect you have a leak causing the pump to run and then wear out.

They normally leak at the pump area from one of the pipes.

04-03-2010, 11:02 AM	#1
117 Member Join Date: Oct 2005 Location: Exeter, Devon Posts: 53	S500 airmatic issues Hi guys, My w220 s500 has what I presume to be a noisy airmatic compressor, and the car does not rise properly using button on the dash, only very slightly and the pump makes a slight grinding sound, the pump seems to be running all the time also, and emits a hum noticable in the cabin when driving.... Ocassionally the driver side rear strut also appears to settle slightly lower than the other side when the car is turned off. Do you guys think a replacement pump can solve my problem, also can anyone recommend a good MB specialist in Devon? Many Thanks.... __________________

04-03-2010, 11:17 AM	#3
BlackC55 Hardcore MB Enthusiast Join Date: Feb 2007 Location: Horndean, Portsmouth, Hampshire, Southsea Car: C43 AMG with mods, ML270, Mk1 Golf cab. Mk1 Caddy fully restored 7.5T truck Rotax Max race Kart ETC Posts: 8,251	I suspect you have a leak causing the pump to run and then wear out. They normally leak at the pump area from one of the pipes. __________________ Prestige car Service: I am listed here on MBClub please click to see services and discounts available.

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04-03-2010, 11:16 AM	#2
James Rothwell Hardcore MB Enthusiast Join Date: Feb 2009 Location: Surrey/London Car: S500L (W220) PREV- S600L (W140),2x E320, S500, 450SLC, E300D Wagon Posts: 816	That will be the pump, get it replaced sooner rather than later whilst you can still drive it. Once it goes completely the car will sink down into the arches and you can't drive it. Parts from MB are about £340. I went to Olly at PCS to do mine he is in Horndean though.

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