Please, brake light nightmare. - Page 8

stevestrat · 9th May 2016, 14:21

Glad its solved but what am I going to do now, been following this thread for days

bigblue75 · 17th September 2016, 06:28

Searched through the forum yesterday regarding a problem I'm having and want to thank the OP for posting up the conclusion of his problem.
Same problem here and same cause, pulling the ABS fuse (32) fixes the sticky brake light... Now to see about getting the ABS fixed.

freddiem · 23rd September 2016, 14:00

I had the same problem on my previous 75. It turned out to be a broken wire behind the dash. Took 3 hours and nearly £200 to fix.

bigblue75 · 23rd September 2016, 14:17

Thanks for replying, did you have the brake lights come on constantly when the key was turned in the ignition or only when turned to start the engine?

Wondering how common a fault this is.

chgperformance · 25th September 2016, 11:48

Oh how if only it was the ABS unit.

I changed the abs unit for a second hand one from a forum breaker.

Fitted it all back and lights still stuck on when I put the abs fuse back in.

So do I try another ABS unit? do I take the dashboard apart and trace the wiring? Or do I scrap it as now I have a clutch fluid leak too. No idea where from but the slave cylinder pipes are metal.

bigblue75 · 25th September 2016, 15:32

Thanks for the update regarding the replacement ABS unit. Strange how nothing else on the car is affected by this.
My ABS and LSM male and female connectors are in good condition and given a squirt of electrical contact cleaner, plugged and unplugged a few times and allowed to dry before reconnecting. This had no effect on the problem.

Have not been able to find any wiring diagrams or explanations on how the ABS unit affects the brake light switch signal.

chgperformance · 7th October 2016, 18:40

Finally solved!!!!!!

Fitted a genuine BMW brake light switch, popped ABS fuse back in. Lights work normal even with engine running!!!

Need to sort the ABS now though as ABS light stayed on

but soooooo happy to have speedo and trip computer working again

bigblue75 · 7th October 2016, 19:21

Well done!

What switch did the trick and where did you get it from?

And which switches didn't work? may be worth making a list of those that do not work to save others grief.

HarryM1BYT · 7th October 2016, 19:59

Quote:

Originally Posted by bigblue75

Well done!

What switch did the trick and where did you get it from?

And which switches didn't work? may be worth making a list of those that do not work to save others grief.

Probably the hall effect switch at the brake pedal.

chgperformance · 8th October 2016, 17:36

Quote:

Originally Posted by bigblue75

Well done!

What switch did the trick and where did you get it from?

And which switches didn't work? may be worth making a list of those that do not work to save others grief.

Was a genuine BMW switch, in an MG rover packet from Rimmer Bros,

9th May 2016, 14:21	#71
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,479 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Glad its solved but what am I going to do now, been following this thread for days __________________ Steve T4 Location Map

17th September 2016, 06:28	#72
bigblue75 older not wiser 75 Tourer Join Date: Oct 2014 Location: Falkirk Posts: 274 Thanks: 93 Thanked 46 Times in 35 Posts	Snap! Searched through the forum yesterday regarding a problem I'm having and want to thank the OP for posting up the conclusion of his problem. Same problem here and same cause, pulling the ABS fuse (32) fixes the sticky brake light... Now to see about getting the ABS fixed.

23rd September 2016, 14:00	#73
freddiem Newbie Rover 75 saloon Join Date: Nov 2013 Location: Norwich Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts	Brake lights stuck on. I had the same problem on my previous 75. It turned out to be a broken wire behind the dash. Took 3 hours and nearly £200 to fix.

23rd September 2016, 14:17	#74
bigblue75 older not wiser 75 Tourer Join Date: Oct 2014 Location: Falkirk Posts: 274 Thanks: 93 Thanked 46 Times in 35 Posts	Thanks for replying, did you have the brake lights come on constantly when the key was turned in the ignition or only when turned to start the engine? Wondering how common a fault this is.

25th September 2016, 11:48	#75
chgperformance Avid contributor MG ZT-T Join Date: Feb 2016 Location: Wisbech Posts: 168 Thanks: 16 Thanked 29 Times in 22 Posts	Oh how if only it was the ABS unit. I changed the abs unit for a second hand one from a forum breaker. Fitted it all back and lights still stuck on when I put the abs fuse back in. So do I try another ABS unit? do I take the dashboard apart and trace the wiring? Or do I scrap it as now I have a clutch fluid leak too. No idea where from but the slave cylinder pipes are metal.

25th September 2016, 15:32	#76
bigblue75 older not wiser 75 Tourer Join Date: Oct 2014 Location: Falkirk Posts: 274 Thanks: 93 Thanked 46 Times in 35 Posts	Thanks for the update regarding the replacement ABS unit. Strange how nothing else on the car is affected by this. My ABS and LSM male and female connectors are in good condition and given a squirt of electrical contact cleaner, plugged and unplugged a few times and allowed to dry before reconnecting. This had no effect on the problem. Have not been able to find any wiring diagrams or explanations on how the ABS unit affects the brake light switch signal.

7th October 2016, 18:40	#77
chgperformance Avid contributor MG ZT-T Join Date: Feb 2016 Location: Wisbech Posts: 168 Thanks: 16 Thanked 29 Times in 22 Posts	Finally solved!!!!!! Fitted a genuine BMW brake light switch, popped ABS fuse back in. Lights work normal even with engine running!!! Need to sort the ABS now though as ABS light stayed on but soooooo happy to have speedo and trip computer working again

7th October 2016, 19:21	#78
bigblue75 older not wiser 75 Tourer Join Date: Oct 2014 Location: Falkirk Posts: 274 Thanks: 93 Thanked 46 Times in 35 Posts	Well done! What switch did the trick and where did you get it from? And which switches didn't work? may be worth making a list of those that do not work to save others grief.