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What's running when I open the door in the morning?

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Old 08-22-2007, 02:22 PM
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2014 E63, Cobra replica, 68 Camaro, 66 Chevy II SS, Z4 BMW, Honda Element, Birel 125cc Shifter Kart.
What's running when I open the door in the morning?
In the monring when I first open the door on my '06' E55 there is the sound of something running in the front of the car. It sounds like an electric motor or pump and it only runs for a moment or two and shuts off. The key is NOT in the ignition when this occurs.

Is this normal? What is it?
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Old 08-22-2007, 02:23 PM
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Mine does that when I hit the unlock button on the FOB. Is the pump really loud?
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Old 08-22-2007, 02:30 PM
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Originally Posted by bfnnrgn
Mine does that when I hit the unlock button on the FOB. Is the pump really loud?
It's loud enough to hear from inside the car with the door shut!

I'm not sure exactly what triggers the noise but I only notice it on the first start up of the day as I'm getting into the car.
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Old 08-22-2007, 02:35 PM
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Airmatic suspension pump.
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Old 08-22-2007, 02:45 PM
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Isn't it the hydraulicbrakes pre-charge pump?
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Old 08-22-2007, 02:49 PM
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Another thing I noticed is sometimes when parked, suspension makes an air blow an levels but not always, any ideas why and criteria for that?
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Old 08-22-2007, 02:51 PM
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Thanks guys. Makes sense now.

I've had this car for eight months and I'm still learning something new every day!
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Old 08-22-2007, 03:10 PM
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Originally Posted by Jrocket
Airmatic suspension pump.
Yep.
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Old 08-22-2007, 04:32 PM
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Originally Posted by Jrocket
Airmatic suspension pump.
+1...If you jump in really quick and focus across the hood you will actually see the car raise. I like to think it's yawning!
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