Brake System Warning Light problem / cure

[Steve T]

Had a problem with the Brake warning light staying on with the handbrake off, indication of a possible failure in the braking system or handbrake switch fault, this happened a while ago and fixed it in the same way. The cause was dirty contacts at the rear of the warning light module on the circuit board. It is possible to clean the contact points in place after removal of the wiring plug, but removal is easy and can clean much better, I had an abbrasive pencil and this did the job cleaning them up a treat solving the problem, the contacts on the plug were OK so it is just the copper contacts getting tarnished and making a poor contact. Much easier to check this first before suspecting brake pressure switch failure or brake circuit fault.

Front view


Rear view


Rear view with plug removed to expose circuit board. Red arrow indicates tang to remove module, one at the bottom also,
squeeze together and remove pulling rearwards, look how clean those contacts are now!


Module removed, prior to cleaning


Hope this may help if anyone has same problem

Steve

[Fritz]

Dear Sir, you can up load this information in to the 'Wiki' (OR ask a Moderator to do it for you )simply because it has good clear instructions which will help others in the future.



Regards


Fritz,,,,,,,,,,,,,,,,,,,,,

[Steve T]

Fritz,
Good shout, I did try but failed, "error log in" ? also was not sure which section to put it in, Brakes obviously but should it be in electrical also? Could a Moderator put it in please after editing if needed, if deemed worthy of inclusion.

Steve

[HarryMann]

Yes, always best to fwd/send stuff here so the Wiki stays consistent and tidy...

https://club8090.co.uk/wiki/VW ... t_Stays_On

Thanks everyone