Got a strange brake warning indication
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 9,910
Likes: 1,858
From: Hot Springs AR
Got a strange brake warning indication
This winter I've started seeing my brake system warning light pop up on the IPC, usually on accelaration, both in a straight line and in a turn (e.g. turning onto a highway).
One time was exceptionally strange. Turning off of a gravel driveway, the warning light came on, then, while accelerating in a straight line, the Active Handling system went berserk, applying brakes on both the left and right sides, then the DIC gave a "Active Handling" error message. I cycled power on the car, and never had another problem.
Here's the crazy part: no error codes!. No PCM or TCS messages, none! There were codes in the other systems, but I cleared all those out, and have experienced the Brake warning light momentarily coming on, and absolutely zero codes through the DIC.
Any ideas?
TIA, and have a good one,
Mike
One time was exceptionally strange. Turning off of a gravel driveway, the warning light came on, then, while accelerating in a straight line, the Active Handling system went berserk, applying brakes on both the left and right sides, then the DIC gave a "Active Handling" error message. I cycled power on the car, and never had another problem.
Here's the crazy part: no error codes!. No PCM or TCS messages, none! There were codes in the other systems, but I cleared all those out, and have experienced the Brake warning light momentarily coming on, and absolutely zero codes through the DIC.
Any ideas?
TIA, and have a good one,
Mike
Tech Contributor
Joined: Jan 2007
Posts: 19,465
Likes: 1,167
From: Dyer, IN
This winter I've started seeing my brake system warning light pop up on the IPC, usually on accelaration, both in a straight line and in a turn (e.g. turning onto a highway).
One time was exceptionally strange. Turning off of a gravel driveway, the warning light came on, then, while accelerating in a straight line, the Active Handling system went berserk, applying brakes on both the left and right sides, then the DIC gave a "Active Handling" error message. I cycled power on the car, and never had another problem.
Here's the crazy part: no error codes!. No PCM or TCS messages, none! There were codes in the other systems, but I cleared all those out, and have experienced the Brake warning light momentarily coming on, and absolutely zero codes through the DIC.
Any ideas?
TIA, and have a good one,
Mike
One time was exceptionally strange. Turning off of a gravel driveway, the warning light came on, then, while accelerating in a straight line, the Active Handling system went berserk, applying brakes on both the left and right sides, then the DIC gave a "Active Handling" error message. I cycled power on the car, and never had another problem.
Here's the crazy part: no error codes!. No PCM or TCS messages, none! There were codes in the other systems, but I cleared all those out, and have experienced the Brake warning light momentarily coming on, and absolutely zero codes through the DIC.
Any ideas?
TIA, and have a good one,
Mike
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 9,910
Likes: 1,858
From: Hot Springs AR
Sorry, I knew I didn't give enough info.
Fluid level is good. Don't know about the sensor, how could I check that without draining the MC? Checked the e-brake, that's working correctly.
Thanks for the ideas, keep 'em coming!
Have a good one,
Mike
Fluid level is good. Don't know about the sensor, how could I check that without draining the MC? Checked the e-brake, that's working correctly.
Thanks for the ideas, keep 'em coming!
Have a good one,
Mike
Tech Contributor
Joined: Jan 2007
Posts: 19,465
Likes: 1,167
From: Dyer, IN
Tech Contributor
Joined: Jan 2007
Posts: 19,465
Likes: 1,167
From: Dyer, IN
Ok, there just isn't too much to look at here. You can disconnect the sensor, and drive the car. If the light does not come back on, then the switch is flaky. If it does, then you have an issue with the e-brake, or wiring to the level switch.
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Advanced
Joined: Dec 2009
Posts: 83
Likes: 0
From: MILLINGTON MICHIGAN
I have experienced the same thing since last spring with it increasing ie I dont have to accelerate as had to come on, figured the sending unit, good fluid level, its a winter project I have not yet gotten to. I have never had it come on in braking only acceleration. I can't do any road test for a couple more months to much snow.
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Joined: Dec 2009
Posts: 83
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From: MILLINGTON MICHIGAN
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 9,910
Likes: 1,858
From: Hot Springs AR
Also, I don't understand how even spread calipers could cause the brake warning indicator to come on.
Thanks again for all the suggestions, and have a good one,
Mike