2010 2011 BMW 5 Series Forum F10
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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Engine noise
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      11-13-2010, 07:02 PM   #1
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Engine noise

Well after waiting a long 2 months to get my 2011 535i xdrive, I don't get to enjoy it. Been at the dealership longer than I have had it. There is a "knocking" sound coming from the engine area and they have no idea what it is. Drive me crazy because it is somewhat loud. Just a constant tap-tap-tap. Speeds up a little when I give it gas but constantly there. Factory rep from BMW at dealership but still cant figure it out after 4 days told me they would replace high pressure fuel pump. Also the auto headlights come on even when it's high noon. I know i read somewhere on a post that others are having same problem. UG! Drives me crazy!!!
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      11-15-2010, 01:07 AM   #2
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wow really? does the n55 have fuel pump problems like the n54?
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      11-15-2010, 04:29 AM   #3
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The tapping is normal I believe.
Mine sounds like a diesel lol
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      11-15-2010, 01:29 PM   #4
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do you have active roll stabilzation. there may be a problem with that causing a grinding like noise? BMW working on this I think.
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