Rear right Brake and indictator bulb fault

mcscoobs · 09-06-2021, 05:05 AM

I've got a random intermittent issue with my rear right brake and indicator bulbs failing. Seems to be happening with increasing regularity now. I assume changing the bulbs won't do a thing as I feel it's something slightly more sinister...

Is this a known, common issue?

ian332isport · 09-06-2021, 07:12 AM

I've read posts in the past regarding the connector on the rear lights burning out/melting. I guess this could cause a high resistance that could trip a bulb warning.

xenon · 09-06-2021, 07:23 AM

Faulty earth on the cluster. Wire an extra earth link to the cluster, job jobbed.

mcscoobs · 09-15-2021, 07:55 AM

So I've taken the cluster out and had a proper look. Looks like the prong has melted into the connector (not sure if pics show it)…. How do I fix this?!

Fizzy Duck · 09-15-2021, 08:45 AM

My grandfather had the same thing.

A garage wanted to replace the entire unit, but a local specialist advised it just needed a module change or something inside the headlamp unit :-)

mcscoobs · 09-15-2021, 08:51 AM

Well randomly, I cleaned it up and put it back together, and now it's working perfectly fine... but how?! Very bizarre! I expect it's only a matter of time though

09-06-2021, 05:05 AM	#1
mcscoobs First Lieutenant 169 Rep 309 Posts Drives: F31 335d xDrive Join Date: Aug 2020 Location: Amersham, Bucks iTrader: (0)	Rear right Brake and indictator bulb fault I've got a random intermittent issue with my rear right brake and indicator bulbs failing. Seems to be happening with increasing regularity now. I assume changing the bulbs won't do a thing as I feel it's something slightly more sinister... Is this a known, common issue?
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09-06-2021, 07:12 AM	#2
ian332isport Major 705 Rep 1,141 Posts Drives: F31 340i Shadow Edition Join Date: Jun 2018 Location: UK iTrader: (0)	I've read posts in the past regarding the connector on the rear lights burning out/melting. I guess this could cause a high resistance that could trip a bulb warning.
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09-06-2021, 07:23 AM	#3
xenon Major General 1405 Rep 8,093 Posts Drives: 2021 G21 330i M-Sport Join Date: Jun 2008 Location: Coventry iTrader: (0)	Faulty earth on the cluster. Wire an extra earth link to the cluster, job jobbed. __________________ Ian Current: 2021 G21 330i M-Sport Previous: 2018 A6 Avant S-Line MMI+, 2014 F31 320d M-Sport, 2013 F10 520d M-Sport, 2011 F10 530d M-Sport, 2008 320i M-Sport Coupe, 2002 325i, 2001 318i valvetronic, 1998 318i, 1996 525i, 1990 Porsche 944S2
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09-15-2021, 07:55 AM	#4
mcscoobs First Lieutenant 169 Rep 309 Posts Drives: F31 335d xDrive Join Date: Aug 2020 Location: Amersham, Bucks iTrader: (0)	So I've taken the cluster out and had a proper look. Looks like the prong has melted into the connector (not sure if pics show it)…. How do I fix this?! Attached Images
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09-15-2021, 08:45 AM	#5
Fizzy Duck Enlisted Member 15 Rep 34 Posts Drives: E88 135i Join Date: Aug 2021 Location: West Sussex, UK iTrader: (0)	My grandfather had the same thing. A garage wanted to replace the entire unit, but a local specialist advised it just needed a module change or something inside the headlamp unit :-)
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09-15-2021, 08:51 AM	#6
mcscoobs First Lieutenant 169 Rep 309 Posts Drives: F31 335d xDrive Join Date: Aug 2020 Location: Amersham, Bucks iTrader: (0)	Well randomly, I cleaned it up and put it back together, and now it's working perfectly fine... but how?! Very bizarre! I expect it's only a matter of time though
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