Make a donation

Author Topic: Body control module, battery drain  (Read 2911 times)

Offline Reecey

  • Just Arrived
  • **
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 14
    • Email
Body control module, battery drain
« on: November 27, 2017, 09:07:08 pm »
hoping someone has some knowledge on this matter but i have recently had a battery drain which the garage has identified as being the BCM, they were unsure if this is the problem or something faulty causing the BCM to be draining the battery, i have looked but cant find what items are run by the BCM as my knowledge of electronics is very limited. for all i know this thing runs the whole car.

could someone give some helps on this or point me in the direction of usual suspects??

thanks
05 Gti
Lowered
Bluefin Stage 2

Offline v4rley

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 29
  • -Receive: 104
  • Posts: 1026
Re: Body control module, battery drain
« Reply #1 on: November 27, 2017, 09:09:48 pm »
Have you changed your stereo?

You have got a mk5? Not sure it’s  call a BCM if it is a mk5

Offline Pashka

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 4
  • -Receive: 33
  • Posts: 624
    • Email
Re: Body control module, battery drain
« Reply #2 on: November 27, 2017, 09:34:44 pm »
hoping someone has some knowledge on this matter but i have recently had a battery drain which the garage has identified as being the BCM, they were unsure if this is the problem or something faulty causing the BCM to be draining the battery, i have looked but cant find what items are run by the BCM as my knowledge of electronics is very limited. for all i know this thing runs the whole car.

could someone give some helps on this or point me in the direction of usual suspects??

thanks
It is called CECM, not BCM. BCM has MK6 etc. But I would say its a new stereo or another new installed gadget like handsfree, alarm etc.
06 1.9 TDI Owner. Retrofits: Bixenons, Drls, Full GT/GTI exterior, RNS510+MDI+Premium Bluetooth+RVC+OPS, Full Fis, MFSW, Cruise control, TPMS, Polar Fis, Boot pop up and more.. :)
Coding, diagnostic and retrofits in Leeds
Pre coded Can Gateways for battery drain issues with RNS510 and similar headunits
Premium Bluetooth modules/kit
RNS510 Service - codes, maps/firmware updates
Latest V8 West EU maps update service for RNS315

Offline Reecey

  • Just Arrived
  • **
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 14
    • Email
Re: Body control module, battery drain
« Reply #3 on: November 27, 2017, 09:54:58 pm »
my stereo has been in for at least 7 months before this problem started, so cant imagine its that? it begun around the time that my rear wiper stopped working by just running constantly until it just stopped for good, dont know if this is connected??
05 Gti
Lowered
Bluefin Stage 2

Offline doylebros

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 44
  • -Receive: 309
  • Posts: 2774
Re: Body control module, battery drain
« Reply #4 on: November 27, 2017, 10:03:04 pm »
What else doesn't work in the tailgate area eg boot light or lock etc cause if there's a wiring issue in the bango sections of the boot lid you could have a system which can't sleep and thus a battery drain.