tail lights on all the time

oldcarguy · 25th July 2019, 14:14

My tail lights are on all the time but the number plate lights are off as are the front side lights. I have to disconnect the battery so as not to flatten the battery. Any thoughts welcome. TIA

Rick-sta · 25th July 2019, 17:37

is it a diesel? possible electrical issue due to a wet ecu in the plenum, might be worth checking if your plenums are blocked and filled with water. Also check the LSM isn't wet.

oldcarguy · 25th July 2019, 18:25

Hi Rick, plenum is dry as a bone, and yes, it is a diesel.

Lee T · 25th July 2019, 18:30

Have you tried a battery reset? It can and has cured many odd electrical issues, so worth a go.
Lee.

ryszard · 25th July 2019, 18:54

Hi,I had a slightly different problem,parked up one night and realised my brake lights were still on,then smelt burning plastic in the car,disconnected battery and next day discovered the brake light switch under the brake pedal had shorted and began to melt.Just mentioning this in case it were your brake lights not going off.Regards Ry......

Rick-sta · 25th July 2019, 19:16

Quote:

Originally Posted by oldcarguy

Hi Rick, plenum is dry as a bone, and yes, it is a diesel.

have you got the highline satnav system with the radio and video modules in the boot and also the satnav drive? If so check that the spare wheel well and satnav drive are dry. Had this on a car once where the wet radio and video modules were causing electrical issues, one which was the tail lights staying on when they weren't switched on.

oldcarguy · 25th July 2019, 19:47

Thanks Lee, I tried a battery reset with no success and have disconnected it again for tonight.
Ryszard, definitely the tail lights but there was a strange smell in the car a few days ago which I put down to the heat we are experiencing at the moment. Definitely worth a check though, thanks.
Rick, standard radio removed and replaced with one of those Chinese DD units. Being a tourer the spare wheel well remains dry.
Thanks everyone.

Mike Noc · 25th July 2019, 20:56

Check fuse 7 hasn't blown (fuse 13 if it is a Facelift).

Ian G · 25th July 2019, 21:33

Have you checked for loom chafing on the frame this can cause all sorts of issues
See post number 4 here..
https://the75andztclub.co.uk/forum/s...d.php?t=290775

Cheers Ian

oldcarguy · 25th July 2019, 22:02

Quote:

Originally Posted by Mike Noc

Check fuse 7 hasn't blown (fuse 13 if it is a Facelift).

That's a simple check so I'll start there in the morning, thanks Mike.

25th July 2019, 14:14	#1
oldcarguy Posted a thing or two Rover 75 Conn SE Tourer Join Date: Aug 2011 Location: Driffield Posts: 1,952 Thanks: 27 Thanked 151 Times in 125 Posts	tail lights on all the time My tail lights are on all the time but the number plate lights are off as are the front side lights. I have to disconnect the battery so as not to flatten the battery. Any thoughts welcome. TIA

25th July 2019, 17:37	#2
Rick-sta This is my second home MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black Join Date: Oct 2012 Location: Norfolk Posts: 7,534 Thanks: 2,718 Thanked 2,827 Times in 1,462 Posts	is it a diesel? possible electrical issue due to a wet ecu in the plenum, might be worth checking if your plenums are blocked and filled with water. Also check the LSM isn't wet. __________________ How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link How to retrofit heated electric memory seats with no OEM wiring in place: Link How to operate FBH and ATC via text Link How to restore cloudy projector headlights Link

25th July 2019, 18:30	#4
Lee T Gets stuck in MG ZT Join Date: Jul 2014 Location: Liverpool Posts: 851 Thanks: 180 Thanked 248 Times in 189 Posts	Have you tried a battery reset? It can and has cured many odd electrical issues, so worth a go. Lee. __________________ [SIGPIC][/SIGPIC]

25th July 2019, 21:33	#9
Ian G This is my second home Small Join Date: Feb 2010 Location: Land of the Eel Posts: 6,315 Thanks: 2,328 Thanked 2,991 Times in 1,431 Posts	Have you checked for loom chafing on the frame this can cause all sorts of issues See post number 4 here.. https://the75andztclub.co.uk/forum/s...d.php?t=290775 Cheers Ian __________________ The man behind redfive Last edited by Ian G; 25th July 2019 at 21:36..

25th July 2019, 18:25	#3
oldcarguy Posted a thing or two Rover 75 Conn SE Tourer Join Date: Aug 2011 Location: Driffield Posts: 1,952 Thanks: 27 Thanked 151 Times in 125 Posts	Hi Rick, plenum is dry as a bone, and yes, it is a diesel.

25th July 2019, 18:54	#5
ryszard Gets stuck in Moonstone diesel,X351 Jaguar and now MG ZT 260 Join Date: Dec 2013 Location: Northampton Posts: 682 Thanks: 288 Thanked 118 Times in 96 Posts	Hi,I had a slightly different problem,parked up one night and realised my brake lights were still on,then smelt burning plastic in the car,disconnected battery and next day discovered the brake light switch under the brake pedal had shorted and began to melt.Just mentioning this in case it were your brake lights not going off.Regards Ry......

25th July 2019, 19:47	#7
oldcarguy Posted a thing or two Rover 75 Conn SE Tourer Join Date: Aug 2011 Location: Driffield Posts: 1,952 Thanks: 27 Thanked 151 Times in 125 Posts	Thanks Lee, I tried a battery reset with no success and have disconnected it again for tonight. Ryszard, definitely the tail lights but there was a strange smell in the car a few days ago which I put down to the heat we are experiencing at the moment. Definitely worth a check though, thanks. Rick, standard radio removed and replaced with one of those Chinese DD units. Being a tourer the spare wheel well remains dry. Thanks everyone.

25th July 2019, 20:56	#8
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Check fuse 7 hasn't blown (fuse 13 if it is a Facelift).