The national average cost for a brake pedal position sensor replacement in 2023 is $158​

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National average cost of a a Brake Pedal Position Sensor Replacement
for popular vehicles:

Car Model

Avg. cost


What is a brake pedal position sensor and how does it work?

A brake pedal position sensor is a device that detects the movement of the brake pedal in a vehicle. It is attached to the brake pedal lever underneath the dashboard.

One job of the sensor is to turn on the brake lights to alert drivers to the rear of the vehicle whenever the driver presses the brake pedal. A brake light is necessary in order to comply with federal law. But, unlike a simple brake light switch (that does the same thing), the brake pedal position sensor also disengages the cruise control when the brakes are engaged. This is to ensure that the engine does not continue to propel the vehicle forward against the braking system. And, on some hybrid and electric vehicles, the brake pedal position sensor also serves as part of the regenerative braking system.


How do I know if the brake pedal position sensor needs to be replaced?

The symptoms of a failing brake pedal position sensor can be similar to those of a bad brake light switch. Because the sensor is tied to more functions than a brake light switch, it might be more likely diagnosed with a scan tool, especially on hybrid or electric vehicles.

Signs of a bad brake pedal position sensor include:

Cruise control is rendered inoperative or it malfunctions

Brake lights at the rear of your vehicle do not turn on, or they flicker when the brake pedal is pressed

The brake lights remain on

Your vehicle will not start or only starts when shifted into neutral

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How is a a Brake Pedal Position Sensor Replacement done?

To replace a bad brake pedal position sensor, a technician will need to access the inside of your vehicle and perform the following steps:

  • Remove any lower dashboard components necessary to gain access to the sensor
  • Disconnect the wiring attached to the sensor
  • Remove and replace the sensor with a new one
  • Reconnect the wiring
  • Reinstall any dashboard components that were removed
  • Verify operation of the new sensor with either a visual test or a diagnostic tool
  • Reset any diagnostic trouble codes as necessary

Other questions customers ask

How do you reset a brake pedal position sensor?
In order to reset a brake pedal position sensor, a technician must have access to the vehicle’s computer with a diagnostic scan tool. Once the scan tool is plugged into the vehicles data port, the technician will access the menu for the sensor to allow it to recalibrate or “re-learn”.
Is a brake pedal position sensor the same thing as a brake light switch?
A brake pedal position sensor performs the same function as that of a brake light switch - it turns on the brake lights when the driver presses on the brake pedal. But the brake pedal position sensor does more than that. It also disengages the cruise control feature when the driver brakes. It also functions as part of regenerative braking on some hybrid and electric vehicles.
Can a bad brake pedal position sensor cause a vehicle not to start?
Yes. On vehicles that require the brake pedal to be depressed in order for the ignition to engage, a bad brake pedal position sensor might prevent the engine from starting. This is because the sensor is used to determine whether or not the brakes are engaged.

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