GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Cause of AirMatic compressor burnout?

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Old 07-03-2024, 11:52 PM
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Cause of AirMatic compressor burnout?

I recently got out the car and noticed that the airMatic compressor was still on. I ran into the store to get what I needed and when i came out it was smoking.
I rushed home and parked the car and within an hour it was sitting low. When I open the door I still hear the valve block get rid of air.
The codes I get when I check are 5172 and 5508.

My question is can I drive to the repair shop (about 20 miles) without messing anything else up?

If I change the pump myself will it even fix the issue or is there a root cause of the pump going out anyway?



Old 07-03-2024, 11:53 PM
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Here is a still shot of how low the car is.
Old 07-04-2024, 12:11 AM
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height

From the picture it looks like there is tire clearance? That is for you to decide. If there is clearance I would pull the fuse to the compressor and drive it to the shop. They will need to have a Star System to find your leaks and problems .
Old 07-04-2024, 01:32 AM
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Originally Posted by vesiadog
From the picture it looks like there is tire clearance? That is for you to decide. If there is clearance I would pull the fuse to the compressor and drive it to the shop. They will need to have a Star System to find your leaks and problems .
where is the fuse? I know where the relay is but not the fuse
Old 07-04-2024, 01:53 AM
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Now just one GL450 with EORP.
Root cause is a leak in the system so the compressor always runs

most leaks in the system occurs in the parts that are most exposed to wear and tear - the air spring rubber bellows

check bags for leaks with car in raised position

replace all suspect bags

replace compressor
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Old 07-04-2024, 01:55 AM
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fuse X-164



Old 07-04-2024, 03:23 AM
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Originally Posted by vesiadog

ok I'll check that
Old 07-04-2024, 03:25 AM
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Originally Posted by Max Blast
Root cause is a leak in the system so the compressor always runs

most leaks in the system occurs in the parts that are most exposed to wear and tear - the air spring rubber bellows

check bags for leaks with car in raised position

replace all suspect bags

replace compressor
I would need to replace the compressor first so I can get it to raise up and check for leaks right?

also what are the air spring rubber bellows?

My indy guy is trying to get me to change the compressor and the value block (both of which I changed in Jan 2022 btw)
Old 07-04-2024, 11:07 AM
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system checkout

If the compressor still runs…1st big question!
You can checkout the complete system with a Star system.
Yes you will need a running compressor to look for leaks (unless you see an obvious ripped bag.
The front struts have bag or bellow attached to them.. the rear bags are separate.
You have a solenoid valve block that controls the air thru the lines to the system .

So between the compressor, filter, lines, bags and tank.. you can have leaks. I check my compressor running time between engine oil changes to keep an eye out for too much run time. Also if the car consistently sags after sitting for a few hours or a day .. I will put it on my Star System and trouble shoot.
Old 07-04-2024, 12:17 PM
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Originally Posted by vesiadog
If the compressor still runs…1st big question!
You can checkout the complete system with a Star system.
Yes you will need a running compressor to look for leaks (unless you see an obvious ripped bag.
The front struts have bag or bellow attached to them.. the rear bags are separate.
You have a solenoid valve block that controls the air thru the lines to the system .

So between the compressor, filter, lines, bags and tank.. you can have leaks. I check my compressor running time between engine oil changes to keep an eye out for too much run time. Also if the car consistently sags after sitting for a few hours or a day .. I will put it on my Star System and trouble shoot.
ok got it! I didn’t know you can view compressor Run time. My Autel scanner lets me do simulations but I haven’t gotten anything to lift
Old 07-04-2024, 12:37 PM
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run time

Originally Posted by Mikchek
ok got it! I didn’t know you can view compressor Run time. My Autel scanner lets me do simulations but I haven’t gotten anything to lift
The ICarsoft and Star systems both have runtime.
mai will be selling a Star System for up to 2014 cars with an original Actia multiplexor not a china copy with cables and a Dell laptop.. I have 3 laptops and 2 multiplexor’s and time to sell 1…$1000’plus shipping.
Old 07-04-2024, 08:53 PM
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Now just one GL450 with EORP.
Originally Posted by Mikchek
I would need to replace the compressor first so I can get it to raise up and check for leaks right?

also what are the air spring rubber bellows?

My indy guy is trying to get me to change the compressor and the value block (both of which I changed in Jan 2022 btw)
The airsprings are basically a rubber bellow
Both the compressor and the valve block should have a longer service life than that.
The good news is, you can replace the compressor just by turning the wheel all the way to the right removing the inner fender well, and it’s right there
Old 07-04-2024, 10:32 PM
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compressor

My experience compressors last about 100 hours and that is the better made compressors. I have taken one apart and they are very cheaply made. If your system has been leaking it doesn’t take long to put 100 hrs on a bad system .
Old 07-05-2024, 08:31 AM
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It's a pretty easy DIY to replace the compressor and manifold, once the front bumper is removed.
Old 07-05-2024, 11:41 AM
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compressor

Originally Posted by texas008
It's a pretty easy DIY to replace the compressor and manifold, once the front bumper is removed.
I have replaced 3 compressors and never took off a bumper? Just the fender well .
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Old 07-05-2024, 03:58 PM
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I would do a new relay for the compressor as well, just so not dealing with a stuck/welded relay creating constant running.
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Old 07-07-2024, 10:19 AM
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I got it to the shop and they changed the compressor to an arnott compressor.
He said when they put it in only the front raised up.
So then they changed the valve block and the entire car raised.
Everything has been working for a few days BUT I keep hearing noises coming from the compressor area.
It has nothing to do with air. If I had to take a guess I would say its not mounted properly/tight and when it activates to moves.
I can feel when this happens through the gas petal

I just have no idea what it can be.
Old 07-08-2024, 02:07 PM
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Originally Posted by vesiadog
I have replaced 3 compressors and never took off a bumper? Just the fender well .
Yeah same here, I replaced 3 or 4 compressors and never messed with the bumper, just the fender liner and its right there, it is also good idea to change the filter and check the condition of the intake hose, thats where they mostly fail, hose gets brittle and gives up then compressor sucks in dust debris and in some extreme cases even water. My intake hose was in a bad shape, not worth the replace anymore, so I upgrade it with a better hose I picked up from auto parts store.
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Old 07-09-2024, 12:38 AM
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Originally Posted by Mikchek
I got it to the shop and they changed the compressor to an arnott compressor.
He said when they put it in only the front raised up.
So then they changed the valve block and the entire car raised.
Everything has been working for a few days BUT I keep hearing noises coming from the compressor area.
It has nothing to do with air. If I had to take a guess I would say its not mounted properly/tight and when it activates to moves.
I can feel when this happens through the gas petal

I just have no idea what it can be.
Sounds like the pump is constantly running. Likely from a leak in the system.
I've been working on a truck that had bad struts/socks and pump constantly running. I swapped front struts/airbags and rear shocks. Pump does not run as often and airs up quick when elevating suspension, but still runs more than it should (and it is LOUD). So next up is rear bags. Hopefully that fixes the pump running so much. After that, the pump itself is getting swapped out.
Old 07-09-2024, 01:33 AM
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Star System testing

Originally Posted by White Out
Sounds like the pump is constantly running. Likely from a leak in the system.
I've been working on a truck that had bad struts/socks and pump constantly running. I swapped front struts/airbags and rear shocks. Pump does not run as often and airs up quick when elevating suspension, but still runs more than it should (and it is LOUD). So next up is rear bags. Hopefully that fixes the pump running so much. After that, the pump itself is getting swapped out.
Sure would be a lot easier having the Star system testing the whole air suspension system .
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Old 07-10-2024, 11:10 AM
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Originally Posted by vesiadog
I have replaced 3 compressors and never took off a bumper? Just the fender well .
yes I've also replaced the compressor and manifold on my GL450 without removing the front bumper.
Later on when replacing the radiator of the GL450, I found out that Its so much easier to work on the compressor and manifold with the front bumper removed.
Old 07-14-2024, 12:36 PM
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Originally Posted by vesiadog
Sure would be a lot easier having the Star system testing the whole air suspension system .
my Autel tests the system too I just don’t know how to use it 😩
Old 07-14-2024, 12:43 PM
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Originally Posted by Mikchek
I got it to the shop and they changed the compressor to an arnott compressor.
He said when they put it in only the front raised up.
So then they changed the valve block and the entire car raised.
Everything has been working for a few days BUT I keep hearing noises coming from the compressor area.
It has nothing to do with air. If I had to take a guess I would say its not mounted properly/tight and when it activates to moves.
I can feel when this happens through the gas petal

I just have no idea what it can be.
well the noise got worse and you could feel it under your feet when sitting in the passenger seat. Yesterday while driving I heard something fall off the car while driving. 10 minutes later I got the malfunction light again and the rear would not raise.

took it back to the shop and they checked it out to find that the compressor has a leak. He showed me when you press the raise button how you could feel air shooting out of the unit. I honestly didn’t see any cracks but definitely felt it.

I can’t say what the noise is or what caused the crack but my spider senses are definitely tingling!
Old 07-14-2024, 01:34 PM
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new shop

Originally Posted by Mikchek
well the noise got worse and you could feel it under your feet when sitting in the passenger seat. Yesterday while driving I heard something fall off the car while driving. 10 minutes later I got the malfunction light again and the rear would not raise.

took it back to the shop and they checked it out to find that the compressor has a leak. He showed me when you press the raise button how you could feel air shooting out of the unit. I honestly didn’t see any cracks but definitely felt it.

I can’t say what the noise is or what caused the crack but my spider senses are definitely tingling!
Highly suggest finding a new shop. Trying to follow this story to help but it keeps pointing to a shop not quite up to par
Old 07-14-2024, 01:42 PM
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Originally Posted by vesiadog
Highly suggest finding a new shop. Trying to follow this story to help but it keeps pointing to a shop not quite up to par
you may have a point


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