All Things Mk5 > How to Guides / Troubleshooting

Brake lights constantly on

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Greigzy:
So, when the car is running, the brake light is constantly on. When the brake pedal is pressed, they light up a little more, but stay on.

When the car is turned off, the brakes lights go off, and if you press the brake light, they light up as they should.

I have replaced the brake light switch, which has made no difference.

Any suggestions with what to do now? Could it be a relay?

mb:
Haven't got my Mk5 anymore but are the brake/rear lights double filament bulbs? My mate had a problem once, not on a Golf, where every time he braked his headlights flashed. The cause of that was the brake light filament of the double filament bulb was touching the rear light filament.

This is assuming you have the lights on!

Greigzy:
Unfortunately no - all lights are turned off, and the brake lights still illuminate.

Have done a scan on vagcom - no fault codes  :thinking:

doylebros:

--- Quote from: Greigzy on November 01, 2016, 03:47:40 pm ---Unfortunately no - all lights are turned off, and the brake lights still illuminate.

Have done a scan on vagcom - no fault codes  :thinking:

--- End quote ---

Has anyone fitted any replacement bulbs lately?

Greigzy:
Last time was around 2 months ago and that was for both front bulbs, and they were replaced with OSRAM nightbreakers.

The brake lights seem more recent, within the last week.

No LED bulbs are fitted to the car either.

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