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You don't. You buy a new brake light switch. They are not repairable.
Rick
I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://free-auto-repair-advice.blogspot.com
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∙ 16y ago
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What would cause my dashboard warning light to stay on when the emergency brake is off.?
Warning Light for Parking [Emergency] BrakeUsually, the cause for this is that the switch used to sense the position of the Parking brake lever is either out of adjustment, or the contacts within the switch are stuck together.The switches are usually operated by a "plunger" pin which is spring loaded. When the Parking Brake is applied, it presses the plunger in, closing the switch, and causing the light to turn on.When the Parking Brake is "OFF, an internal [usually] spring pushes the plunger "out," opening the warning light circuit and thus turning the light off.Occasionally on some vehicles, this is just backwards, IE, plunger "in" turns light on, and plunger "out" turns light off.You will have to analyze the operation of your Parking Brake in relation to when the light is on or off compared to the brake lever position.The switch is "adjusted" by moving it closer or farther away from the arm that pushes the plunger pin in, or allows it to move out.
Why do the brake lights constantly stay on whether the vehicle is on or off?
There is a brake light switch mounted high up on the brake pedal. The switch has a plunger which is released (extends) when you step on the brake pedal. This completes an electrical circuit. The switch has either come loose from where is it mounted so that the plunger is released all the time or part of the plunger has broken off. This has the same effect as having the plunger released.
Where is brake light switch on a 1986 Cutlass?
There should be a bracket mounted on the steering column near the floor. This will have a switch in it that is a plunger type. When the shaft of the brake pedal is depressed, it comes into contact with this plunger and activates the brake light circuit. If you "ride the brakes", your brake lights will always be on because of the minimal pressure required to activate this circuit.
How do you fix brake lights that are permanently lit on a Fiat Punto?
Check the brake light switch. It is mounted high up on the brake pedal (has a plunger on the end). The plunger on the switch has either broken off or the switch has come loose from where it is mounted to the pedal.
What if your brake light on your Chrysler 300 stays on when parked does anyone know the anwer to fix the problem?
There's should be a brake light switch under the dash right behind the brake pedal arm. Sounds like it needs to be re-adjusted. The switch has a plunger that pulls out. Pull it all the way out, then just press the brake pedal down. You should hear a clicking as the plunger is re-adjusting back into the switch. Your just re-adjusting the plunger so that when you let off the brake pedal it will not be pushing on the brake light switch. hope this helped
How do you put in the plunger in a brake light switch on a 1993 Honda Accord?
I think the brake light switch is only about $20-$25 dollars at an auto parts store. I'm not ever sure you can put the plunger back in one. I suggest getting a new one.
1992 Chevy caprice brake light stays on but the brakes are off?
brake light plunger switch on the brake pedal maybe faulty, remove it and connect the two wires together and pull apart and see if lights go on and off
Where is the brake light switch on a 98 Ford Taurus?
Attached to the break pedal arm. Looks like a plunger like thing.
How do you repair brake light being stuck on for a 1996 Nissan Altima?
Check brake light switch - could be defective or not aligned properly
How do you reset the brake warning light on a 2003 Cadillac DeVille?
You have a problem with the brake system. Once you repair the problem the light will reset itself.
1999 Ford Taurus - Cruise control stopped engaging. I had the stop light switch replaced recently. Is this problem related to the repair?
The stop light switch may cause the problem. If not adjusted properly it will not allow the cruise to engage. Check that there is no contact with the switch (Plunger) while the brake is not being depressed.
How do you repair brake sensor light on Nissan maximum?
under ure brake pedal u have a brake switch simple fix.
