Battery drain

clarkie46 · 6th February 2020, 13:45

I am getting a drain on my battery when the car is locked up and not in use.
I have traced the problem to the under bonnet fuse FL3 which is drawing about 1.5 amps. Can anyone tell me what circuit this fuse controls.

MarkS · 6th February 2020, 15:53

What year ?
MG/75 ? 75
What car ? Tourer /(Saloon)
Variant (Classic/Club/Conn ) ? Conn
What engine ? Diesel
FBH ?
Manual/Automatic ?
Sunroof ?
Original (standard fuses) or PPD fusebox (miniature fuses) ? Orig
What radio and CD player ?
Any existing issues ?

MarkS · 7th February 2020, 19:50

The following fuses (interior fusebox) (& others possibly) are fed by FL3:

F1 20A BCU for electric windows.
F4 5A RH Front window switch & Mirror control switch.
F5 5A BCU for wash wipe, interior lighting, et al.
F20 20A Inertia switch.
F22 15A Radio and CD player.
F23 20A Sunroof control unit.
F26 5A Immobilizer Control Unit.
F27 5A Instrument cluster.
F28 15A Horn, Clock, OBD2 socket.

And finally the Headlight washer relay R3 & F30 30A.

Have you waited for the electric window red LEDs to go out before taking the current reading ?

https://the75andztclub.co.uk/forum/s...d.php?t=179536

clarkie46 · 9th February 2020, 10:59

Hi MARKS,
Thanks for your reply, will check out these fuses.

MarkS · 9th February 2020, 11:16

Do you have :

FBH ?
Satnav ?

6th February 2020, 13:45	#1
clarkie46 Newbie rover 75 tourer Join Date: May 2013 Location: moodiesburn Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	Battery drain I am getting a drain on my battery when the car is locked up and not in use. I have traced the problem to the under bonnet fuse FL3 which is drawing about 1.5 amps. Can anyone tell me what circuit this fuse controls.

6th February 2020, 15:53	#2
MarkS Gets stuck in Rover 75 Diesel Tourer, called Perseverance Join Date: Nov 2011 Location: Bournemouth Posts: 664 Thanks: 189 Thanked 157 Times in 108 Posts	What year ? MG/75 ? 75 What car ? Tourer /(Saloon) Variant (Classic/Club/Conn ) ? Conn What engine ? Diesel FBH ? Manual/Automatic ? Sunroof ? Original (standard fuses) or PPD fusebox (miniature fuses) ? Orig What radio and CD player ? Any existing issues ? Last edited by MarkS; 6th February 2020 at 20:50..

7th February 2020, 19:50	#3
MarkS Gets stuck in Rover 75 Diesel Tourer, called Perseverance Join Date: Nov 2011 Location: Bournemouth Posts: 664 Thanks: 189 Thanked 157 Times in 108 Posts	The following fuses (interior fusebox) (& others possibly) are fed by FL3: F1 20A BCU for electric windows. F4 5A RH Front window switch & Mirror control switch. F5 5A BCU for wash wipe, interior lighting, et al. F20 20A Inertia switch. F22 15A Radio and CD player. F23 20A Sunroof control unit. F26 5A Immobilizer Control Unit. F27 5A Instrument cluster. F28 15A Horn, Clock, OBD2 socket. And finally the Headlight washer relay R3 & F30 30A. Have you waited for the electric window red LEDs to go out before taking the current reading ? https://the75andztclub.co.uk/forum/s...d.php?t=179536 Last edited by MarkS; 7th February 2020 at 19:57..

9th February 2020, 10:59	#4
clarkie46 Newbie rover 75 tourer Join Date: May 2013 Location: moodiesburn Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	battery drain Hi MARKS, Thanks for your reply, will check out these fuses.

9th February 2020, 11:16	#5
MarkS Gets stuck in Rover 75 Diesel Tourer, called Perseverance Join Date: Nov 2011 Location: Bournemouth Posts: 664 Thanks: 189 Thanked 157 Times in 108 Posts	Do you have : FBH ? Satnav ?