airmatic malfunction warning on dash?
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Senior Member
Joined: Apr 2015
Posts: 287
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GLS450
airmatic malfunction warning on dash?
When I first start my car and drive all is ok but after some miles, i.e. 10 to 50, the Airmatic Malfunction light shows in the cluster. The car rides like normal at a normal level the entire time BUT my Owner's Manual says drive no faster than 50 mph even though I cruise the freeways at 70+.
Will an auto parts store OBD scanner tell me what's wrong or is this a dealer only item?
Will an auto parts store OBD scanner tell me what's wrong or is this a dealer only item?
Member
Joined: Nov 2005
Posts: 165
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From: Buford, Ga
2023 EQE AMG
You will need an OBD II scanner such as Star Diagnostic or
to read the fault codes. To me it saying that something is wrong.. it could be that the pump is dead.. Have you tried to raise the truck?
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NGL450 w/EORP, S550
With a DAS or IcarSoft you'll probably read out a compressor run time exceeded or compressor overheat code related code. Or perhaps one of your level sensors is sending implausible signals. A scanner doesn't really provide dead giveways when troubleshooting Airmatic issues (as it does for other on board systems or sensors), it merely hints to where you need to put your eyeballs and look for leaks.
If your malfunction indicator is the white car symbol with the up arrow through it it is usually compressor related - either it is not providing output when commanded, or the output falls below threshold (16 bar in 30 seconds).
Check relay, check that compressor runs when pushing the raise button, check your bags for leaks with soapy water or leak detector spray before investing in a code reader.
If your malfunction indicator is the white car symbol with the up arrow through it it is usually compressor related - either it is not providing output when commanded, or the output falls below threshold (16 bar in 30 seconds).
Check relay, check that compressor runs when pushing the raise button, check your bags for leaks with soapy water or leak detector spray before investing in a code reader.
Last edited by Max Blast; Sep 15, 2020 at 09:29 PM.
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From: Northern VA
2010 GL350 BLUETEC, 2013 E350 Sport
Ditto to that, but don't think too hard about the investment for something as inexpensive as a MBII scanner. It will save you a huge amounts of time and cost in dealing with the many inevitable CELs you will experience with these vehicles. Pays for itself many times over.
Thread Starter
Senior Member
Joined: Apr 2015
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GLS450
icarsoft MBll to diagnose Airmatic (Problematic, a better name) malfunction
Ditto to that, but don't think too hard about the investment for something as inexpensive as a MBII scanner. It will save you a huge amounts of time and cost in dealing with the many inevitable CELs you will experience with these vehicles. Pays for itself many times over.
Last edited by 1xsculler; Sep 20, 2020 at 06:23 PM.
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NGL450 w/EORP, S550
That says your compressor isn’t putting out enough PSI to fill the reservoir when commanded to.
change your compressor and that will go away - but ask yourself why your compressor is worn out. Have you checked the air springs for leaks?
change your compressor and that will go away - but ask yourself why your compressor is worn out. Have you checked the air springs for leaks?
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GLS450
icarsoft MBll vs the dealer's Star scanner?
Thanks again.
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