BMW M3 Brake Light Switch Replacement Costs

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Brake Light Switch Replacement Service

How much does a Brake Light Switch Replacement cost?

On average, the cost for a BMW M3 Brake Light Switch Replacement is $158 with $18 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2016 BMW M3L6-3.0L Turbo	Service typeBrake Light Switch Replacement	Estimate$354.26	Shop/Dealer Price$413.08 - $569.27
2004 BMW M3L6-3.2L	Service typeBrake Light Switch Replacement	Estimate$246.87	Shop/Dealer Price$276.67 - $355.77
1991 BMW M3L4-2.3L	Service typeBrake Light Switch Replacement	Estimate$182.91	Shop/Dealer Price$196.79 - $227.96
2018 BMW M3L6-3.0L Turbo	Service typeBrake Light Switch Replacement	Estimate$345.25	Shop/Dealer Price$396.92 - $547.76
2013 BMW M3V8-4.0L	Service typeBrake Light Switch Replacement	Estimate$246.87	Shop/Dealer Price$280.42 - $362.32
1990 BMW M3L4-2.3L	Service typeBrake Light Switch Replacement	Estimate$182.91	Shop/Dealer Price$197.14 - $228.57
2012 BMW M3V8-4.0L	Service typeBrake Light Switch Replacement	Estimate$246.87	Shop/Dealer Price$276.77 - $355.95
1996 BMW M3L6-3.2L	Service typeBrake Light Switch Replacement	Estimate$246.87	Shop/Dealer Price$276.73 - $355.88

Show example BMW M3 Brake Light Switch Replacement prices

What is the brake light switch and how does it work?

The brake light switch is a mechanical switch activated when you press the brake pedal. The switch has a plunger in it that contacts a lever in the brake pedal assembly. As that plunger is depressed when you push on the brake pedal, the contacts in the brake light switch closed and voltage flows to the brake lights — turning them on. The brake light switch is also in the circuit that controls the cruise control disengagement and the shift interlock safety feature installed on all newer cars. Failure of the brake light switch occurs due to wear on the internal electrical contacts in the switch, poor switch terminal connections, maladjustment of the switch, or damage to the brake pedal assembly.

When to consider replacing the brake light switch?

No brake lights. If depressing the brake pedal does not cause any of the brake lights to illuminate, the continuity of the switch will be tested. If only one brake light is out, then the issue is not the switch but rather the bulb, bulb socket or brake light circuit integrity.
Unable to shift out of park. The brake light switch is also wired into the shift interlock mechanism. If you are unable to shift out of park, with your foot on the brake, check to see if the brake lights will illuminate as you push the pedal. If they do not illuminate, failure of the brake light switch may be the cause of the no shift.
Intermittent operation of the brake lights or late operation. The brake light switch has to be in the proper position, and work consistently if the brake lights are to come on the instant you press the brake pedal. The switch can sometimes require adjustment, or the contacts may degrade, causing inconsistent operation of the switch.

How do mechanics replace the brake light switch?

The switch is first tested using a multimeter, including the terminal contacts to the switch, to determine if it is faulty. If the switch is functioning, the entire circuit must be tested to determine the cause of no brake lights.
Should the switch be judged defective, the switch is unthreaded from the mounting boss near the brake pedal assembly.
The new switch is threaded in and locked with an appropriate locknut once the new switch is properly adjusted.
The operation of the switch is tested to ensure instant illumination of the brake lights upon pressing the brake pedal.

Is it safe to drive with a brake light switch problem?

No. Should the brake light switch have failed, it is unsafe to drive the vehicle because drivers behind you will have no indication that you are slowing, intend to slow, or are stopped. Always address a failure of this type promptly to ensure your safety while driving.

When replacing the brake light switch keep in mind:

The mechanic will test the brake light switch directly to ensure that the issue is not elsewhere in the brake light circuit.
Occasionally, the issue is a maladjusted switch or a loose contact, and the mechanic can resolve the problem without switch replacement.

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Tien

24 years of experience

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Tien

24 years of experience

by sebastian

BMW M3 L6-3.2L - Serpentine/Drive Belt - Dublin, California

First Class Knowledge and First Class Professionalisms . As long as Mr. Tien Pham works for Your Mechanic I will book him and no one else to work on my three vehicles an M3, C55 AMG and GMC YUKON. That should be enough said....

Nicholas

12 years of experience

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12 years of experience

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by Laurent

BMW M3 L6-3.2L - Pre-purchase Car Inspection - Spring, Texas

Mechanic was punctual, polite and did inspection as expected. Overall satisfied. Still I question his less than "very good" rating of brake fluid condition given that brake service had been completed 3,000 mi / 8 months prior to inspection.

Chris

17 years of experience

419 reviews

Chris

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by Alan

BMW M3 V8-4.0L - Oil Change - San Francisco, California

Chris was great! He was fast and knew what needed to be done. Knew the BMWs well!

Mark

12 years of experience

349 reviews

Mark

12 years of experience

by Ron

BMW M3 L6-3.2L - Oil Change - Mountain View, California

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