BMW 435i xDrive Brake Light Switch Replacement Cost

Know what price you should pay to get your vehicle fixed.

Brake Light Switch Replacement
The average cost for a BMW 435i xDrive brake light switch replacement is between $98 and $110. Labor costs are estimated between $44 and $56 while parts are priced at $54. Estimate does not include taxes and fees.
Note about price: The cost of this service or repair can vary by location, your vehicle's make and model, and even your engine type. Related repairs may also be needed. Talk with a RepairPal Certified shop to learn which repairs might be right for you.

How does the brake light switch work?

One end of this small switch looks like a small button, and when it is pressed the brake lights turn off. The button is pressed by the brake pedal unless the brake pedal is compressed. This creates the situation where the brake lights turn on anytime the brakes are pressed. It is easiest to consider the brake light switch to work the opposite of the brake pedal. When the pedal is pressed, the switch is not, likewise, when the switch is pressed, the brake pedal is resting. This switch also sends a signal to the ignition switch and gear selector. The purpose of this signal is to ensure the brake pedal is pressed before starting the vehicle, or moving the gear selector out of park.

What are the symptoms related to a bad brake light switch?

Consumers often complain that the brake lights stay on and drain the battery when not in use. Additionally, the brake lights may not illuminate when pressing the brake pedal. Often, and especially in modern vehicles, this will result in the inability to start the vehicle, or shift the transmission out of the park position.

Can I drive with a brake light switch problem?

Driving a vehicle with a faulty brake light switch is dangerous, if not impossible. If the brake lights stay on constantly, the vehicle may not have enough power to start after sitting for several hours. If the brake lights do not turn on, the vehicle may be illegal to operate. Additionally, other drivers on the road may think the tail lights of the vehicle are turned on, leaving them unaware when you are braking, and causing a traffic accident. The vehicle may not move from park, even if the gear selector is manually released.

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How often do brake light switches need to be replaced?

The brake light switch is known to fail under all conditions, and at no particular age or mileage. Often they are placed where the drivers feet may contact them, and dust, dirt, water, and other contaminants are common. These factors can contribute to malfunctioning. Especially in stop and go traffic, the brake light switch is constantly in use, and this wear and tear will eventually lead to failure.