M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

rear airmatic

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Old 07-09-2016, 09:01 AM
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2005 E320 CDI (sold); 2007 R320 CDI (sold); 2008 ML320 CDI; 2014 ML350 Bluetec
rear airmatic

Hello All,

I have noticed that my rear end of car is lowered and I assume the airmatic went south (right now is around 200k km on clock). I hear air pump is trying pump up but it sound as big truck doing bug puffffff

I have 2 questions:

1. how I know it is airmatic (both wheels are on same level and it could be unlikely to have both wrong in same time) vs air pump (or other issue).

2. it is airmatic - should I stay with OEM or go with Blistein

I appreciate your input.
Old 07-11-2016, 12:55 PM
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ML550
I just had a front one go south. If you hear the pump it's not the pump, but when my shock blew the pump only went for a minute, then the dash when you have it reading airmatic said malfunction and the pump went off. Pump is expensive so get it diagnosed quickly if yours isn't shutting off.


I went back to stock, I was told if you're not going to replace all 4 don't go Bilstien
Old 07-13-2016, 02:56 PM
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'09 ML550
These guys have replacement airmatic components.
Arnott Industries

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