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What could be causing the humming/buzzing noise I hear after I shut off my car?

Tiny
WILLIAMHHENRY
  • MEMBER
  • 1997 BMW 318I
  • 117,200 MILES
The noise comes from the area right below my radio. The noise starts as soon as I turn the engine off and goes on seemingly forever. Im pretty sure whatever is behind the noise is running my battery dead.
Monday, November 7th, 2011 AT 7:38 PM

4 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Have you tried pulling fuses 1 at a time to see what circuit it's tied to?
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Monday, November 7th, 2011 AT 8:10 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
It's likely your climate control fan which is a little computer size fan on the circuit board. It wears out/gets out of balance/clogged with dirt/dust. It's suppose to run for awhile after car shuts off. Like up to 15 min.
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Monday, November 7th, 2011 AT 8:20 PM
Tiny
WILLIAMHHENRY
  • MEMBER
  • 2 POSTS
Thanks. Im taking my car to the shop in a couple days for an oil change. Ill talk to them about the noise and let them know what you thought it might be.
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Monday, November 7th, 2011 AT 9:04 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Were you able to find a fix for this problem williamhenry?
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Monday, December 5th, 2011 AT 1:35 AM

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