View Full Version : Right rear taillight fault
eurospek
09-17-2020, 06:31 PM
So I was washing the car and upon moving back to the garage I received a “Right rear taillight fault” in my dash. Upon further inspection with the lights in the ON position, the right trunk inner light assembly, the red stripe is much dimmer in comparison to the outer assembly where the red stripe is continued and normal brightness.
Brake lights function properly. I checked.
Did something get wet?
eurospek
09-18-2020, 08:43 AM
Took it all apart. Turns out the foam seal around the assembly was wet and I’m guessing some water creeped inside.
I also discovered the brackets holding the assembly in the trunk lid have been reversed left to right side.
As in current state the bracket wasn’t attached to anything or bolted down to the housing, the housing was just attached at one point vs two and thus the foam seal wasn’t doing its job. The bracket was just rattling around in there lol.
Dried out the dim assembly with the use of a space heater, swapped brackets to correct side and all is back to 100%.
Valpo A7
09-18-2020, 09:25 AM
I was going to suggest to check the side markers as they are tied in to the rear tail light circuit.
eveleth
09-18-2020, 09:46 AM
Happened to me with both inner tail lights. Specifically the turn signals. Only happened when it rained. Just replaced them to make things easier but it seems like you might have solved it.
christianb5s4
09-18-2020, 10:08 AM
It was common on the C6.5s that got LED taillights to have the circuit boards corrode and eventually throw a bulb error. I dealt with this myself despite the lights fully functioning, still gave an error. Only real remedy is to replace.
WatchMeSpend
09-18-2020, 11:56 AM
It was common on the C6.5s that got LED taillights to have the circuit boards corrode and eventually throw a bulb error. I dealt with this myself despite the lights fully functioning, still gave an error. Only real remedy is to replace.
Same here. Driving over bumps caused enough minor disconnects that the system said the bulb was out. Got tired of trying to clean contacts and what not. One new light, polish the other lens and ended the annoyance.