Pump running in rear with engine off ?
06-10-2007, 01:21 PM
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With the car parked and engine off, at times there is what sounds like a pneumatic pump coming on for a short period of time.
Is this normal and what is it?
Thanks
Is this normal and what is it?
Thanks
06-10-2007, 01:47 PM
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My Ride: F11 520d Touring Imperial Blue, sports automatic, VDC, black leather sports seats, M Sport steering wheel, HiFi Professional, 18" 328 wheels, Xenon, PCD, electrical tow hitch etc...
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Must be the pump for the air suspension in the rear axle. The level is self adjustable.
06-10-2007, 10:16 PM
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My Ride: BMW 530 M Sport Touring 2005, Silver grey, automatic gearbox, Active Steering, Storage Pack, Panoramic sunroof
Yes, it's normal. The pump adjust our rear ride height.
06-11-2007, 01:30 AM
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My Ride: soon 520d touring delivery week26
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06-11-2007, 04:22 AM
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The knowledge base for this forum never stops amazing me... Reading all these posts will make me into an expert of my own car before I even have got it. 
Reading all these posts will make me into an expert of my own car before I even have got it.
06-15-2007, 10:01 AM
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This was happening to me, seemed harmless at first, but I had a faulty pump, which ended up going on (and staying on) randomly until it drained my battery numerous times. They replaced my pump, and the problem was solved. So if it's only for a few seconds after you've stopped your car, you should be fine. But if you hear it going on well after you've stopped your car, may want to take it in and have it checked.
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