Battery drain

75v6 · 8th January 2019, 16:35

I find if I leave my car for several days, the battery drops below level that can start the car - any ideas on how to find the offending item that is doing it!? Or is it off to the auto electricians?

Bullnose75 · 8th January 2019, 16:56

I had something similar happen to my V6 Tourer. Turned out to be the factory fitted audio draining the battery. Maybe next time you leave car for a few days remove the audio fuse (no 33) from the fuse box under glovebox in car and see if that stops it draining.
To find what was draining my battery I ended up removing battery + lead and connecting multimeter set on amps between battery + and the disconnected battery lead. Think I had something like 3 amp drain until I removed audio fuse 33 then drain went back to normal. Think the factory sat nav drive unit is sometimes the culprit causing the drain

COLVERT · 8th January 2019, 18:33

Do you know the state of charge of your battery to begin with ??

If there is not enough power to start the car then your battery will need at least 24 hours on a charger to get it into a reasonable state to start problem solving.

COLVERT · 10th January 2019, 21:11

No response.----Guess this guy doesn't know how to find the answers to his question.

He's been back in the forum but hasn't posted anything.---

8th January 2019, 16:35	#1
75v6 Loves to post 75 CDTi Contrempory Navy Join Date: Feb 2010 Location: S Wales Posts: 338 Thanks: 148 Thanked 35 Times in 33 Posts	Battery drain I find if I leave my car for several days, the battery drops below level that can start the car - any ideas on how to find the offending item that is doing it!? Or is it off to the auto electricians? __________________ Previous: Rover 216si, 75 V6 Copperleaf Conny SE, LWB Navy 2005, LWB Racing Green 2003, 2003 LWB Navy 2003, 2005 Ice blue CDTI.

8th January 2019, 16:56	#2
Bullnose75 Avid contributor Rover 75 Tourer 2.0 V6 LPG Join Date: Apr 2018 Location: Colchester Posts: 210 Thanks: 4 Thanked 50 Times in 39 Posts	I had something similar happen to my V6 Tourer. Turned out to be the factory fitted audio draining the battery. Maybe next time you leave car for a few days remove the audio fuse (no 33) from the fuse box under glovebox in car and see if that stops it draining. To find what was draining my battery I ended up removing battery + lead and connecting multimeter set on amps between battery + and the disconnected battery lead. Think I had something like 3 amp drain until I removed audio fuse 33 then drain went back to normal. Think the factory sat nav drive unit is sometimes the culprit causing the drain

8th January 2019, 18:33	#3
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Do you know the state of charge of your battery to begin with ?? If there is not enough power to start the car then your battery will need at least 24 hours on a charger to get it into a reasonable state to start problem solving.

10th January 2019, 21:11	#4
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	No response.----Guess this guy doesn't know how to find the answers to his question. He's been back in the forum but hasn't posted anything.---