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BMW 520D Msport Touring air suspension

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I recently had air compressor, relay, air bags (both sides) replaced on my 2015 BMW 520d Touring due to it sagging out completely and not reinflating (quite a bumpy ride home that day...). All parts supplied by BMW. Since then it goes down about half way when parked overnight and reinflates again immediately on start up and the ride is as expected.
Any idea what may be the cause of this please before I go back to the garage. Thanks in anticipation.

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Morning Robin

Welcome to the Forum

I replaced both rear Air springs and compressor last year on my E70 mine rarely alters now. The compressor runs on cold mornings while adjusting ride height that is about it.

So back to the garage as if it is dropping that much there must be a fault or leak


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