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  #1  
Old 09-07-2016, 09:12 PM
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BMW E53 Self Level Suspension Problem Help

Problem:

Several weeks ago I had a blown Left Rear Airbag, replaced it and everything was fine for about 1 week. Side Note: One of the black clips broke on re-install at the fitting where the reservoir connects to the air bag, it still fit fine and snug.

After about 1 week I would get "self level suspension inactive" on the dash, BUT the airbags filled after about 5min of driving. So I was able to continue using the vehicle.

I received the INPA software and cable and wanted to see what the issue was. Upon connection, the reservoir was somewhat full and all the air bags were able to manipulated with the software (raise and lower the front/rear) . I clicked the fill reservoir function and it filled up but the compressor got hotter so I turned the fill option off. A few minutes later I was having the issue outlined in this video.

https://youtu.be/ZmZFrBlkkso

Is the compressor shot? What are the next steps. I am on the verg of biting the bullet and going to the dealer.
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  #2  
Old 09-07-2016, 09:33 PM
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You need to rebuild the compressor as its burnt out and the seal needs to be done. Then reset the errors after rebuild.
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Old 09-08-2016, 03:42 AM
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What error codes are you getting from INPA?
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Old 09-08-2016, 06:51 AM
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I imagine you have 4.8is since you're mentioning front and rear air bags.
If I'm wrong and you have rear air bags only (3.0, 4.4., or 4.6is) I have air compressor in good condition that I just removed since I switched to rear coil setup.
If that's your culprit and my part fits, I'd let you have it for fair price.
PM me if interested.
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Old 09-08-2016, 08:13 PM
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My original error was saying that the reservoir tank filling was requested but the tank was full.

I replaced the compressor today with a new one and I still have the issue. I can feel air from the compressor when the line was disconnected and the compressor pumps.
I have no errors (cleared them). Just the blinking 3 lights.

Still the compressor does not fill reservoir more than 1.5 bar
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Old 09-08-2016, 08:14 PM
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could it be the Pressure Accumulator Tank
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