Luckily, this is a very easy, stress free repair. The switch is located right near the tip of your right foot near the brake pedal, so it’s easy to access. The switch may actually snap into place without the use of any tools at all. $20-50 dollars should cover the labor costs on most cars.
It takes less than an hour, and if you use an after-market replacement motor, you can save almost $200 by doing the job yourself.
The brake light switch is a small component near the brake pedal responsible for activating your car’s brake lights. How does it work? When you press down on the brake, the brake light switch turns on the brake lights at the rear of your vehicle. Essentially, it lets the driver behind know that you intend to slow down.
Place the sensor on just one of the two wires and hold the brake pedal down as you do so. Then test the other wire. If power is connected and the switch is working properly, the test bulbs will illuminate. If it doesn’t light up, the brake light switch is faulty and will need to be replaced.
Your dash illumination lights are on the taillight circuit (separate from the brake light circuit). If pressing the brake makes the dash lights come on, it probably means a short or other wiring fault in the rear or in the wiring leading back to the rear lights.
Activates the brake lights when a service brake application is made by the driver.
If one or more of your brake lights isn’t working properly, it could mean one of three things: The brake light system fuse is blown, the brake light bulbs are burned out or the brake light wiring switch is broken. All of these issues are easy to troubleshoot.
I replaced the brake light switch, but my lights keep burning out or stay on. This problem is often caused by a short in the tail light assembly. The short may also be in the wire harness. Shorts can develop inside the tail light, or the wire harness has a short where the trunk hinges to the car.
One of the main reasons why you might see your brake lights working while your tail lights don’t is because the bulbs installed in the tail light were faulty. You should run some tests to make sure if the bulbs are the main culprit or not and to do that, you will need to remove the tail light cover.
One of the most common reasons for your brakes touching the floor would be an issue with your brake fluid. Your fluid being low or air reaching the brake line will prevent the fluid from flowing properly, resulting in a spongy pedal. A bad brake booster is another common cause for a malfunctioning pedal.
Step 1: Disconnect the battery.
While we are not doing any serious electrical work with this job, it’s better to be safe and remove the power so there is no chance of an electrical short while you are working with the connector switch. Remove the negative cable from the battery to stop current flowing through the car.
Before doing any work on the electrical system in your vehicle, you should always disconnect the battery. This will ensure you don’t shock yourself or damage anything as you work. Use a hand or socket wrench to loosen the nut securing the ground cable to the negative terminal of the battery.
What is the Brake Pedal Position Switch all about? … This switch sends a signal to the brake lights on the rear of the car that light up to alert other drivers on the road that you’re slowing or stopping.
The brake light wiring system in most cars is not overly complex. At one end, you have the lights themselves: bulbs in sockets connected to a wiring harness. At the other end is the brake switch, where the pedal presses down and creates contact that completes the circuit. The system draws power from the car’s battery.
If your lights don’t illuminate on either side and your brake light switch is good, then the next thing to check is the brake light fuse. Locate your vehicle’s fuse box, which is usually under the hood or on the kick panel inside the passenger compartment. … If it has, replace it with a fuse of the same resistance.
Like all fuses, the brake light system fuse can be found in the power distribution center, which is under the dashboard or tucked away underneath the hood.
5.1.7 – The Brake Pedal
You put on the brakes by pushing down the brake pedal. (It is also called the foot valve or treadle valve.) Pushing the pedal down harder applies more air pressure. Letting up on the brake pedal reduces the air pressure and releases the brakes.
Without a working Anti-Lock Braking System (ABS), your vehicle will still have normal brake function. Continue to drive and brake as you normally would and have your ABS serviced as soon as possible.
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