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      07-16-2018, 02:42 PM   #1
glen5182
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M240i Question

After my M240i has been parked for some period of time, every time I open a door an electric motor in the engine compartment runs for 4 ½ seconds, pauses, then runs for another 4 ½ seconds. When I close the door, it happens again.

Any idea what that is?
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      07-16-2018, 03:05 PM   #2
TajoMan
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I believe it's the fuel pump. (low pressure one)

it needs to make sure to prime the high pressure pump (with low pressure pump running for few seconds) before the engine start.
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      07-16-2018, 03:17 PM   #3
overcoil
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You can hear that 4.5 second noise over the automatic window drop and raise function, when inside the car ?
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      07-16-2018, 03:26 PM   #4
Wakka
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As others have said, sounds like the fuel pump priming.
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      07-16-2018, 04:14 PM   #5
CP911
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Quote:
Originally Posted by ScottSinger View Post
You can hear that 4.5 second noise over the automatic window drop and raise function, when inside the car ?
I can in mine...
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      07-16-2018, 06:58 PM   #6
morphomeman
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This is true of all recent BMW's, nothing special about your 240.
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