3rd brake light not working!!..???

[WILLZIE]

Does anyone have any knowledge about the brake light in the spoiler not working when my two other brake lights work fine!? 

[homesqueeze]

If you're sure it's not just an electrical problem, then the light is probably knackered. It's a common problem (assuming you have a GTI) and I have been through it. It seems to be caused by water getting into the unit and slowly killing it over time. I replaced mine using this guide:

http://www.golfgtiforum.co.uk/index.php?topic=121067.0

 It is not actually intended to be done like this but if you go to VW they will want to replace the whole spoiler for about £400  because the light is screwed in from the inside. It quite easy to do though and will only cost about £40 for the light unit 

[mk5-beast-91]

+1 for this guide. Took me about 10 mins to do. Very easy job and alot cheaper than getting vw to do it.

[danishmkvgti]

remember when you fit a new 3rd brake light, to prevent it from happening again, turn the sprinkler nozzle to 10 or 2 o'clock, away from 12 o'clock as it sprays directly up on the third brakelight getting it damp inside 

[will_15]

Mines just done this out of the blue as well, luckily a few weeks after MOT. Off to the dealers!

[WILLZIE]

excellent, cheers peeps! 

[pudding]

Mines just done this out of the blue as well, luckily a few weeks after MOT. Off to the dealers!

I know it's an old thread but just for info for others, the 3rd brake light is not part of the MOT 

[danceswithhorses]

Mines just done this out of the blue as well, luckily a few weeks after MOT. Off to the dealers!

I know it's an old thread but just for info for others, the 3rd brake light is not part of the MOT 

Agreed, mine has passed 2 MOTs without 3rd break light

[Mark_DF05]

Same here, always passes although I do plan to change it when I get chance

[pudding]

It's really easy.  Takes about 10 minutes