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> Brake warning light, Tried to reset, but is still on
mpoffers
post Feb 20 2010, 07:47 PM
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My brake warning light is on. I rebuilt the front calipers to fix leaks, then flushed and bled the system. I have good brake pedal and the car stops just fine. The brake warning light is still on.

I looked for the reset on the warning switch, but could not find one. Instead I pulled the switch from the master cyclinder expecting to find something to reset in there. The switch is just a plastic plunger. the connection is closed when the plunger is fully extended, open when the plunger is depressed. I pushed it, tested it, and then reinstalled. I still have a brake warning light.

Should the plunger remain depressed when I push it? Is there something wrong with my master cylinder? Is there something else I need to do on the master cylinder to reset this? How is the warning switch supposed to work?

Thanks,

Mike
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dangrouche
post Feb 21 2010, 10:14 AM
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have you checked the button switch that is beneath the parking brake lever? you have to remove the driver seat, take a good look beneath the lever and see if something is not permitting that little button to release. This is the only other electrical part of the brake like warning circuit that would cause the red lite to flash. It might the spring that the switch block itself is cracked and the circuit remains closed.
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mpoffers
post Feb 21 2010, 10:22 AM
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QUOTE(dangrouche @ Feb 21 2010, 08:14 AM) *

have you checked the button switch that is beneath the parking brake lever?


I will check it, but I don't think that's the problem. When I disconnect the switch at the MC the light goes off. Would't the light stay on if the parking brake switch were the problem?
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