The brake light can come on for two reasons. I is the brake pedal is engaged witch you have found is not the case. The other is because the brake fluid is low or the sensor that monitors brake fluid level is defective.
Check the brake fluid level, if its full unplug the switch and see if it goes out. I'm not sure if the switch completes the circuit when the level is low or opens the circuit but its worth a shot.
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I relize that the parking brake does not use fluid but the brake light is used to warn you that either the parking brake is engaged or the brake fluid is low. If either of these is the case than the same brake warning light will turn on. So since you know its not the e-brake than the next step is to check the fluid and/or the fluid level sensor.
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This is all I've got.Hope this helps?
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ok but all the parking brake is 1 cable that runs back and splits into 2 cables that run to the rear brakes and locks them parking brakes dont use fluid.
but thank you for your help. maybe you have another solution
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