Q: brake lights stay on when driving

asked by on

my brake lights stay on when driving and my foot off the brake pedal. i changed out the brake lamp switch. did not fix problem. is there an adjustment to the brake lamp switch or is it something else?

My car has 163400 miles.
My car has an automatic transmission.

Hello. If your brake lights are staying on, even after a new stop light switch has been installed then it may be possible that there is an issue elsewhere. It does not appear that this model of vehicle requires any sort of adjustment for the brake light switch, though some vehicles do. A common problem on these vehicles is a wiring issue to the BCM. The BCM, short for body control module, receives signal form the stoplight switch to send power to the brake lights. There are cases where the wiring running to the BCM rubs up against the chassis, fraying the wire and causing a short that keeps the brake lights on. This particular issue came up with enough Malibu vehicles that GM issued a TSB to address it. Testing the wiring and harness to the BCM could help determine what if there is a short or not. As wiring issues can sometimes be difficult to locate and diagnose, I would recommend having a professional technician, such as one from YourMechanic, come to your location to determine what exactly is causing your brake lights to stay on.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. brake lights stay on when driving

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Slow slipping transmission, how much longer will it last?

If you are out of warranty, you'll need to have your vehicle checked for problems with a qualified technician such as YourMechanic. They can come to your home or office, perform a road test, check your transmission for mechanical or...

Q: I got an error message that says check fuel cap, but I cannot open the fuel door.

The fuel door may be stuck due to a cable, latch, or hinge fault. If you request service, the responding certified mechanic will pinpoint the fault and get it resolved for you right at your location. If you have further...

Q: Dash lights won't work.

Hi there. Check for a loose ground wire within the dash. The radio wires could have been tied into the dash lights for lighting and not on its own circuit making the connection unstable. Check the wiring on the radio...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...