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

Loud pump above the right-front wheel

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Old Sep 12, 2011 | 04:45 PM
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Sharku's Avatar
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From: Chicago
Audi A8L
Loud pump above the right-front wheel

I have a 2007 GL450 with about 44k miles

Once in a while after I get out of my car I hear a loud pump (looks like a pump) running for about 3 minutes and then shutting off.

I figure that its an air pump for the air suspension, but is it normal to behave that way? Should it run for 3 minutes with that much noise.


Thanks in advance
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Old Sep 12, 2011 | 07:50 PM
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2011 GL 350-Lighting Pkg-P2-Parktronic-Blind spot assist-Heated everything-Running brds ,etc
This happens often on my 2011 350... After I switch off the vehicle and lock it, a loud fan comes on for about 3 mins or so.. seems to be venting out hot air from underneath the vehicle.. It turns off automatically after a while..
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Old Sep 12, 2011 | 08:40 PM
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2020 G63, 2021 E450 All-Terrain Wagon
same...
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Old Sep 12, 2011 | 10:57 PM
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2008 E63 wagon (1 of 62)
The pump should not be running that long at all, especially after you shut the car off.. It's possible that you have a leak in the system somewhere or possibly the relay is sticking and causing the pump to run.

When letting the car sit overnight do you ever see a corner of the car leaning to one side?
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Old Sep 12, 2011 | 11:21 PM
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Audi A8L
No issues with the car leaning. Short of the pump everything seems fine
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Old Sep 13, 2011 | 12:15 PM
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2022 E350 Diamond White Metallic, 2016 GLC300 Dakota Brown Metallic
Have your dealer check the suspension. You could still have a small leak in the system.
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