SPONSORED LINKS

2003 BMW 325 Battery drain

Tiny
MALY96
  • MEMBER
  • 2003 BMW 325
  • 6 CYL
  • 2WD
  • MANUAL
  • 60,010 MILES
I have a problem with my battery going dead. I replaced it. My problem is now that I don't think I had a bad battery. I can hear something running after I shut the car off. It's not the electronic cooling fan. The noise seems to be coming from where the front defost air comes to the front window vent. Yet I don't feel any air. Sometimes it stays on, others it doesn't. I know for sure that I can also hear it outside the vehicle from the intakes near the wipers. What could this be?
SPONSORED LINKS
Monday, March 17th, 2008 AT 6:59 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
This sounds like the final stage for the fan is going bad and the replacement part number is 64-11-6-929-486. BMW had a lot of failures with the old style final stage and they can be identified by the big tapered "teeth" on the heat sink as opposed to the appearance of the replacement unit. They are located in the passengers foot well area, glove box and carpet trim removal is required.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, March 17th, 2008 AT 7:48 PM

Please login or register to post a reply.

Related Battery Drain Content

How to Test for a Battery Drain-Draw
VIDEO
How to Test for a Battery Drain-Draw
Instructional repair video
Battery Parasitic Drain Repair
GUIDE
Battery Parasitic Drain Repair
A car battery should hold its charge for a few months before needing to be recharged, if not the battery has gone bad or the car has a parasitic draw, something is staying ...
VIEW MORE

Sponsored links