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Brake Warning Lite On

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Old Oct 28, 2010 | 07:36 PM
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From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
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Default Brake Warning Lite On

This afternoon I stopped for gas and set the e-brake because there was another car just in front of me. After driving about a block I noticed my brake warning lite on and figured I forgot to release the e-brake but it was released all the way. The car is a '77 and I know of only 2 switches to activate the warning lit, the e-brake switch and the frame mounted pressure differential switch. When it happened I reset the e- brake 3 or 4 times then pulled over and checked for leaks. The calipers, wheels, and lines all looked dry so I popped the top off the reservoir and both front and rear section were level and full. Anyone else have this problem ???

P.S. The brakes feel normal and work normally.

Last edited by BPHORSEGUY; Oct 28, 2010 at 07:41 PM. Reason: additon
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Old Oct 28, 2010 | 07:45 PM
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One of your calipers probably sucked a little air in , probably a rear one. Thats just a guess.
Had you just gotten of the interstate or did a high speed run ?
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Old Oct 28, 2010 | 07:49 PM
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doesn't sound like a leak but you probably should remove the calipers to be sure. you mention you've reset e-brake 3-4 times... How are you doing that? Stepping on the brake pedal hard to make it go off and then is it coming back on??? if yes, could it be a switch issue?
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Old Oct 28, 2010 | 08:06 PM
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Setting the e-brake would have no impact on the P-valve in the engine compartment. And, the last action you had was to engage the e-brake. Soooo...I'm suspecting that the switch on the e-brake actuating arm is stuck or broken. Just a guess, mind you.....
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Old Oct 28, 2010 | 08:14 PM
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Easy way to check, unplug the wire from the brake pressure warning switch, if the light is still on, then the problem is with the park brake switch.
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Old Oct 28, 2010 | 09:31 PM
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Brake Warning Light Switch, at the emergency brake handle would be the first place to look. Spring release mechanism on the switch may have jammed or broken, on the last emergency brake lever actuation.
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Old Oct 28, 2010 | 10:09 PM
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If you have power windows the wires to the switches can interfere with the e brake switch.
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