tail lights on all the time - Page 2

oldcarguy · 25th July 2019, 22:04

Quote:

Originally Posted by Ian G

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

I had the front off a few weeks ago and everything was ticketyboo but I'll check that out tomorrow, thank Ian.

BigRuss · 25th July 2019, 22:35

I'd be looking at trying a different LSM and seeing if your problem disappears

I have come across this before, on that one with the ignition on the tail lights went out but came back on as soon as the ignition was switched off again.

If you fancy a run over I can try a replacement to this if that's the problem.

Russ

oldcarguy · 26th July 2019, 05:53

Quote:

Originally Posted by BigRuss

I'd be looking at trying a different LSM and seeing if your problem disappears

I have come across this before, on that one with the ignition on the tail lights went out but came back on as soon as the ignition was switched off again.

If you fancy a run over I can try a replacement to this if that's the problem.

Russ

Hi Russ, I will check out the easy bits that Rick, Mike and Ian have suggested this morning and will give you a shout later if it looks like the LSM. Thank you.

oldcarguy · 26th July 2019, 07:35

Okay, I have removed fuse 13(facelift) for the LSM and lights are still on, removed the LSM and the lights are still on. Checked wiring behind the headlights and all seems okay. Guess I'll have to remove the tail lamps and take out the rear panels and start checking for a short circuit.
Thanks everyone.
Rod

Mike Noc · 26th July 2019, 07:40

Rod removing fuse 13 is the same as it failing - have you checked it is good or swapped it with a same rated fuse?

oldcarguy · 26th July 2019, 09:13

Quote:

Originally Posted by Mike Noc

Rod removing fuse 13 is the same as it failing - have you checked it is good or swapped it with a same rated fuse?

Yes Mike, no different.
Could it have anything to do with tow bar wiring?

Mike Noc · 26th July 2019, 10:45

Depending on how it was wired up, especially if a bodge job then it could be, but if not then well worth a trip up to see Big Russ - he will sort it.

oldcarguy · 29th July 2019, 13:13

Thanks everyone for their input, I traced the problem to the BMW/Siemens trailer light control unit. The hole burnt in the back of it gave me a clue. lol. Looks like a ride over the scrappies tomorrow to get another.

25th July 2019, 22:35	#12
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	I'd be looking at trying a different LSM and seeing if your problem disappears I have come across this before, on that one with the ignition on the tail lights went out but came back on as soon as the ignition was switched off again. If you fancy a run over I can try a replacement to this if that's the problem. Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

26th July 2019, 07:35	#14
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	Okay, I have removed fuse 13(facelift) for the LSM and lights are still on, removed the LSM and the lights are still on. Checked wiring behind the headlights and all seems okay. Guess I'll have to remove the tail lamps and take out the rear panels and start checking for a short circuit. Thanks everyone. Rod

26th July 2019, 07:40	#15
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: 11,549 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Rod removing fuse 13 is the same as it failing - have you checked it is good or swapped it with a same rated fuse?

26th July 2019, 10:45	#17
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: 11,549 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Depending on how it was wired up, especially if a bodge job then it could be, but if not then well worth a trip up to see Big Russ - he will sort it.

29th July 2019, 13:13	#18
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 everyone for their input, I traced the problem to the BMW/Siemens trailer light control unit. The hole burnt in the back of it gave me a clue. lol. Looks like a ride over the scrappies tomorrow to get another.