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2010 2011 BMW 5 Series Forum F10 F11 Air Suspension Conundrum |
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05-23-2019, 04:45 AM | #1 |
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F11 Air Suspension Conundrum
Hi Folks,
A conundrum for you. Having problems with the near side rear air suspension; symptoms:
Originally when it started happening, I took it to the dealers. They ran through their standard tests and couldn't find any problems (not sure the suspension dropped whilst there); they checked the air bags - no leaks. Getting worse (again, only on the one side) so dropped it down to my local garage - it didn't drop whilst there; they lifted it, checked for leaks... nothing. No error/fault codes reported either. Their thinking: can't find any leaks - not the air "bags" likely the compressor, but there's no fault codes indicating there's any real problem there. Again, it only happens on the one side. If it was a compressor side problem I'd have expected it to effect both sides...? Any ideas? |
05-23-2019, 09:04 AM | #2 |
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Seems that if the compressor was bad it wouldn't level out again. The fact that sometimes it happens very quickly suggests it's not necessarily a slow leak, so maybe a valve of some kind that isn't always closing properly when the compressor shuts off?
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05-23-2019, 06:06 PM | #3 | |
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Quote:
A slow leak can be the air spring, had that myself, the fault/abrasion is not always visible, or even show bubbles when tested. The faster leak/drop indicates it is either a valve, or the level sensor is misreading, intermittently. |
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2011, 525d, air suspension, f11 |
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