Car not starting battery being drained

Wilts75 · 30th April 2024, 13:59

Hi All,
Had problem with not starting, battery low. Checked drain on battery and found drain current 500mA. After removing fuses one at a time it showed F32 in internal fuse box appeared to be the one that was causing the problem, it’s removal dropped drain current to 50mA. I now have no central locking and drivers window not working, all other windows OK.Also no internal lights.

Anybody got an idea what may be causing this drain, plenum dry by the way.
Many thanks in anticipation.
Mike.

Lee T · 30th April 2024, 14:17

Fuse 32 10Amp Diesel model. ABS control unit and TCS control unit and switch. There is a 5Amp fuse in the engine bay fuse box that appears to be shared by Windows and central locking, according to Haynes wire diagrams. Only other connection is the BCU as far as I can tell. Worth a check of that fuse.

Lee.

Wilts75 · 30th April 2024, 15:39

Thanks will check that out.
Battery now on charge to see if without the drain it will fully charge.
Thanks.
Mike

al_dente · 3rd May 2024, 16:36

My tourer had a drain from the sat nav unit. I disconnected it and it's been fine ever since.

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30th April 2024, 13:59	#1
Wilts75 Regular poster Rover 75 tourer Join Date: Apr 2018 Location: Calne Posts: 90 Thanks: 6 Thanked 9 Times in 9 Posts	Car not starting battery being drained Hi All, Had problem with not starting, battery low. Checked drain on battery and found drain current 500mA. After removing fuses one at a time it showed F32 in internal fuse box appeared to be the one that was causing the problem, it’s removal dropped drain current to 50mA. I now have no central locking and drivers window not working, all other windows OK.Also no internal lights. Anybody got an idea what may be causing this drain, plenum dry by the way. Many thanks in anticipation. Mike. Last edited by Wilts75; 30th April 2024 at 15:36..

30th April 2024, 14:17	#2
Lee T Gets stuck in MG ZT Join Date: Jul 2014 Location: Liverpool Posts: 869 Thanks: 180 Thanked 248 Times in 189 Posts	Fuse 32 10Amp Diesel model. ABS control unit and TCS control unit and switch. There is a 5Amp fuse in the engine bay fuse box that appears to be shared by Windows and central locking, according to Haynes wire diagrams. Only other connection is the BCU as far as I can tell. Worth a check of that fuse. Lee. __________________ [SIGPIC][/SIGPIC]

30th April 2024, 15:39	#3
Wilts75 Regular poster Rover 75 tourer Join Date: Apr 2018 Location: Calne Posts: 90 Thanks: 6 Thanked 9 Times in 9 Posts	Car not starting battery being drained Thanks will check that out. Battery now on charge to see if without the drain it will fully charge. Thanks. Mike

3rd May 2024, 16:36	#4
al_dente Loves to post Rover 75 Tourer Join Date: Jun 2009 Location: Nr Telford, Shropshire Posts: 377 Thanks: 6 Thanked 15 Times in 15 Posts	My tourer had a drain from the sat nav unit. I disconnected it and it's been fine ever since. Sent from my Pixel 4a using Tapatalk