Skip the auto shop - Our mechanics make house calls

Q: Brake lights not working in 2001 Mercedes-Benz SLK320

asked by on

My brake lights won't work, but all the other back lights work. I don't think it's the actual bulb.

A: If both brake lights are out, you might be ...

If both brake lights are out, you might be having an issue with your "BOO" or brake on/off switch. This is the switch that actually detects when you're stepping on the brake pedal and sends the electrical signal to the lights. One things that is sometimes used to narrow down things is to try to turn on your cruise control. Usually if the BOO is not working, your cruise control won't engage either. This is because it uses the signal from the switch to cancel when you step on the brake. If there is a problem with the switch it simply wont engage. I would certainly suggest seeking the aid of a professional mechanic, such as one from YourMechanic, to accurately diagnose your brake light issue. This is especially important since driving without brake lights is a safety issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Lights don't work correctly, ABS warning on

Hello there, these are not uncommon problems for a vehicle to have when it sits for awhile. With the ABS light on, the most likely cause is low or poor condition brake fluid. Brake fluid absorbs moisture and can cause...

Q: Oil leak at front center of car

The hydraulic system for the hardtop is in the back and sides of the car. Oil leaks front and center would be engine, transmission, or power steering related. Leaks big enough to drip, and wet rubber hoses should be fixed...

Q: Car in shop three times for major fuel leaks

Hi there. Due to the age of the vehicle, the lines will commonly rot out causing this. Due to the fact that there is fuel in these lines, this accelerates their deterioration. The only way to prolong the life of...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.