3rd brake light woe...

[Sarge]

Hi all,

 

have a centre brake light warning light on the dash. VCDS says code 01503- bulb for centre brake light open or short to plus... yet the thing is working... I’ve checked the connectors, did the resoldering thing on the pins, and finally resorted to a new LED unit.... and still it’s not cured...

would appreciate any advice on where to look to fix this?

Sarge

[Liber_A4_te]

1) Is your 3rd light working when the error is present? 

[Sarge]

It is yes.  100%!  With both the original and the replacement led lamp unit... thinking it’s got to be something to do with the lamp fault detection...

[Magnet]

Hello Andy,

Not absolutely sure, but the fault alert may be triggered by either an open circuit (lamp does not light) or a higher than expected resistance. Although the lamps work, it would be worth checking the cleanliness of all connections associated with these lamps. Contact cleaner would be useful. 

Kind regards,

Gareth.