Airmatic relay has no power
02-02-2017, 11:15 AM
#1
Member
Thread Starter
Airmatic relay has no power. SOLVED.
Hi,
rear is down, checked relay and fuse. Both good, and both has no power. Wired fuse with positive terminal from battery, compressor started to run, but car doesn't come up.
Seems like two problems?
Any thoughts?
rear is down, checked relay and fuse. Both good, and both has no power. Wired fuse with positive terminal from battery, compressor started to run, but car doesn't come up.
Seems like two problems?
Any thoughts?
Last edited by Simonas.st; 02-07-2017 at 02:59 PM.
02-02-2017, 06:53 PM
#4
Out Of Control!!
The request to turn on(supply voltage) the relay and thus the compressor comes from the AIRmatic control unit via switches---now your quandary is finding the fault without an excellent diagnostic tester. That will be difficult. Find someone with a good tester and then you fix the faulty whatever
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Simonas.st (02-05-2017)
02-05-2017, 06:03 AM
#5
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Thread Starter
Ok, so is there any way to cheat the system and to pump in some air, that car would be safe to drive to service? Front looks ok, rear is basically on the ground.
02-05-2017, 10:06 AM
#6
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'99 and '05 E55 AMG
If you activated the compressor and the rear still did not rise, you have a leak in the lines. One line splits into two and supplies both rear air springs. The front air bags are supplied by their own individual air line.
Pay a tow truck to take it to a dealer. I last paid $140 to have one of my cars hauled across town and my towing insurance ($12/year) paid for it.
Pay a tow truck to take it to a dealer. I last paid $140 to have one of my cars hauled across town and my towing insurance ($12/year) paid for it.
02-05-2017, 10:24 AM
#7
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Thread Starter
If so, than front should rise, because it's not on the level as well. Or shouldn't it?
If you activated the compressor and the rear still did not rise, you have a leak in the lines. One line splits into two and supplies both rear air springs. The front air bags are supplied by their own individual air line.
Pay a tow truck to take it to a dealer. I last paid $140 to have one of my cars hauled across town and my towing insurance ($12/year) paid for it.
Pay a tow truck to take it to a dealer. I last paid $140 to have one of my cars hauled across town and my towing insurance ($12/year) paid for it.
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02-05-2017, 12:26 PM
#8
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'99 and '05 E55 AMG
A diagnostic test will point you to the problem; there are a lot of moving parts to the airmatic system. Attachment is for the W211 series to give you an idea.
As to why your relay does not get power, you're going to need the appropriate diagnostic system.
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Simonas.st (02-05-2017)
02-05-2017, 04:14 PM
#9
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Thread Starter
Ok, that makes sense. To make it clear: front is not so low, fully drivable, but not on the level. Also not rising if jumping the fuse.
Tomorrow I will try to drive from my yard, and if nothing is touching anything, will drive to the town extremely slow to find diagnostic.
Tomorrow I will try to drive from my yard, and if nothing is touching anything, will drive to the town extremely slow to find diagnostic.
Correct on your first comment but from your previous posts I understood the front air springs inflate but the rears refuse to rise. Valve block distributes air to the appropriate air spring; one of the valves in the air spring opens to allow air to enter until the sensor indicates the correct ride height, then the valve closes to keep the air in the air spring. If neither the front nor the rear rise, there is a large leak in the system. In that case, first place I would inspect is the line between the air compressor and the valve block using soapy water sprayed on the line if you cannot hear a leak.
A diagnostic test will point you to the problem; there are a lot of moving parts to the airmatic system. Attachment is for the W211 series to give you an idea.
As to why your relay does not get power, you're going to need the appropriate diagnostic system.
A diagnostic test will point you to the problem; there are a lot of moving parts to the airmatic system. Attachment is for the W211 series to give you an idea.
As to why your relay does not get power, you're going to need the appropriate diagnostic system.
02-07-2017, 02:04 AM
#10
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Thread Starter
Sorry to disappoint, but none of You were right.
It was broken rear height sensor.
Got fixed for 60Eur.
Cheap escape this time.
Thanks for all.
It was broken rear height sensor.
Got fixed for 60Eur.
Cheap escape this time.
Thanks for all.
02-07-2017, 09:43 AM
#11
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'99 and '05 E55 AMG
Thanks for posting the solution. Running a diagnostic test would have posted a great big "F" under the suspension section and the fault code would read "rear sensor".
Now would be a good time to have the rear sensor and ride height calibrated.
:-)
Now would be a good time to have the rear sensor and ride height calibrated.
:-)
02-07-2017, 02:58 PM
#12
Member
Thread Starter
I think, that guys didn't had right computer program, because they work only with air suspension, but all type of cars.
What I've noticed now, is that rear doesn't drop at all, after all night. I don't know how it could be connected, but it was dropping a bit during the night before all this story.
What I've noticed now, is that rear doesn't drop at all, after all night. I don't know how it could be connected, but it was dropping a bit during the night before all this story.
08-21-2023, 03:01 PM
#13
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Mercedes r320 cdi
I have the same problem: No power to the air suspension relay or 40A fuse When putting a link to the positive terminal and 40A. Fuse the air compression turns on, but it won't lift the rear. I do not have a scanner to test, Is there any way to bypass the rear Hight sensor and check out of both which is bad?
As I check the sensor and they are bot broken or burned.
As I check the sensor and they are bot broken or burned.
08-21-2023, 04:10 PM
#14
the reason it hits the floor - is when the level sensor snaps off, it tells the cars its too high, so needs to dump air urgently - as the sensor is still saying its too high why would it ever run the compressor in this condition !
you may have an air leak or a weak compressor - anyway if it runs and still doesn't come up what tells the rear to get air... its not just the pump running - that would be the valve block moving pressure there because the sensor and the struts are saying they need it?
you may have an air leak or a weak compressor - anyway if it runs and still doesn't come up what tells the rear to get air... its not just the pump running - that would be the valve block moving pressure there because the sensor and the struts are saying they need it?
