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How to Reset Brake Light?

Posted: Tue Mar 10, 2015 9:07 pm
by mjfreshyfresh
Fixing the front boot meant I had to detach the brake lines so the "uneven brake pressure" switch (or whatever exactly it is) triggered so my light is on. I read about it here: "To set the valve back you have to screw out the contact switch from the valve an screw it in again to make the switch inside snap to zero again." http://www.c303.de/c303-en/z-tuv.htm

I found the sensor and unscrewed it. Just a little piece of plastic rod sticks out of it, I can push it in and it springs back out. When I screw it back in the light is still on.

How exactly does one reset this switch so the brake light goes off?s

Thanks-
MJ

Re: How to Reset Brake Light?

Posted: Wed Mar 11, 2015 3:19 am
by Uli-RT
... have you also pulled out the brakepedalindikator ?
It is a pin at the top of the brakepedal. Just pull it out.
And the handbrake should be off.

Re: How to Reset Brake Light?

Posted: Wed Mar 11, 2015 3:28 am
by Uli-RT

Re: How to Reset Brake Light?

Posted: Wed Mar 11, 2015 6:04 pm
by GRCameron
Bleed front brake circuit completely while ignoring the warning valve signal.

Have someone in the driver's seat apply brake pedal pressure and crack a bleeder fitting on one side at the wheel cylinder until the light goes out. If the first side doesn't do it, crack a bleeder on the opposite side.