How to narrow down airmatic leak?
#26
Keep in mind that your rear bags are rubber, and over time the rubber gets brittle and develop cracks, well these tiny cracks will leak. But, if your sure that your front struts and rear bags aren't leaking, then it's probably the air distribution block located just behind the air compressor.
#27
Senior Member
Hi! Have this error-message "arrow up, visit workshop" after a few minutes driving. Im not able to see if the car is lowered, like it was when my front struts or rear tanks were leaking, so i do think there is something else. When stopping the car i occationaly hear a air-leaking sound from my left front. Makes me think it might be a leak in the compressor. Does this seem right to you experts? And if it is a leak in the compressor, should i change it now, or wait till its competely dead?
Have the car scanned with STAR before you start going off the deep end.
#28
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The air compressor shouldn't be the cause of the leak, as it just supplies air to the tank in the trunk. Then the air that comes from the tank is routed thru the air distribution block.
The leveling sensors along with air pressure sensors in the struts/airbags are telling the computer where air is needed, thus triggering the air distribution block to release the air to whatever corner(s).
One would only replace the air compressor if it craps out on you. That is my understanding of the air system, explained to me by a AMG technician.
The leveling sensors along with air pressure sensors in the struts/airbags are telling the computer where air is needed, thus triggering the air distribution block to release the air to whatever corner(s).
One would only replace the air compressor if it craps out on you. That is my understanding of the air system, explained to me by a AMG technician.
Last edited by Yuille36; 06-12-2021 at 05:01 PM.
#29
Senior Member
The air compressor shouldn't be the cause of the leak, as it just supplies air to the tank in the trunk. Then the air that comes from the tank is routed thru the air distribution block.
The leveling sensors along with air pressure sensors in the struts/airbags are telling the computer where air is needed, thus triggering the air distribution block to release the air to whatever corner(s).
One would only replace the air compressor if it craps out on you.
The leveling sensors along with air pressure sensors in the struts/airbags are telling the computer where air is needed, thus triggering the air distribution block to release the air to whatever corner(s).
One would only replace the air compressor if it craps out on you.
Last edited by equitiesguy; 06-12-2021 at 05:26 PM.
#30
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But I find it odd, that my front struts, aren't necessarily getting its air from the air compressor, if their is sufficient air in the tank.
As there are many time, where I raised the car the compressor never kicked on. And that would mean, that there is a pressure sensor attached to the tank telling the compressor that more air is needed.
And, I also think that the fronts get air either from the tank or the compressor, depending on how much air is in the system.
Last edited by Yuille36; 06-12-2021 at 05:17 PM.
#31
Senior Member
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I'm not saying that your wrong. But an AMG technician explained this to me years ago. So, my information maybe flawed.
But I find it odd, that my front struts, aren't necessarily getting its air from the air compressor, if their is sufficient air in the tank.
As there are many time, where I raised the car the compressor never kicked on. And that would mean, that there is a pressure sensor attached to the tank telling the compressor that more air is needed.
And, I also think that the fronts get air either from the tank or the compressor, depending on how much air is in the system.
But I find it odd, that my front struts, aren't necessarily getting its air from the air compressor, if their is sufficient air in the tank.
As there are many time, where I raised the car the compressor never kicked on. And that would mean, that there is a pressure sensor attached to the tank telling the compressor that more air is needed.
And, I also think that the fronts get air either from the tank or the compressor, depending on how much air is in the system.
The weird thing is I remember trying to raise one of my struts after installing a replacement (only to find the new part was DOA) and it would turn on the pump in order to pressurize it. I've never seen the front struts drain the rear tank when they're leaking or having an issue. The rear tank stayed at 17~ bar even while the pump was raising the front (and subsequently leaking).
I question when the tank actually provides supply to the fronts.
Last edited by equitiesguy; 06-12-2021 at 05:41 PM.
#32
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What I do know is that, the air in the tank runs directly to the charge valve aka air distribution block, and that charges the struts and the bags. But I also believe that the engineers added a redundancy to charge the struts or the bags directly from the pump. This system is overly complicated, and difficult to figure out without Star.
#33
Senior Member
What I do know is that, the air in the tank runs directly to the charge valve aka air distribution block, and that charges the struts and the bags. But I also believe that the engineers added a redundancy to charge the struts or the bags directly from the pump. This system is overly complicated, and difficult to figure out without Star.
If you're looking for a leak, there's no better way than to bring up the airmatic computer module and watch the pressures. If it holds, it's not leaking. If it doesn't, it is.
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NorsemanE320 (06-13-2021)