Skip the auto shop - Our mechanics make house calls

Q: Brake lights will not turn off

asked by on

The brakes lights will not turn off. I unplugged the battery, but when I put the battery back on to start the car, the alarm goes off.

If the brake lights will not turn off, the brake light switch is likely failed, or out of adjustment; disconnecting the battery won’t do any good. I suggest you have a trained professional, such as one from YourMechanic, inspect and repair your brake light circuit.

As for the alarm going off after reconnecting the battery, hit the unlock button on the alarm. If this does not work, insert the key into the driver’s side door with all the doors closed, and "lock" then "unlock" the door.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: My car is idling at 500 rpms is that normal? It's sounds like it's about to shut off but it doesn't

Hello. A low idle can be caused by a few different things. Before doing anything, I'd start by checking the computer for codes. This would tell me if the computer is seeing anything that is not correct. If there are...

Q: Recommendation on which weight of oil to use on a 2008 Honda Accord

If it's running perfectly fine, and it doesn't burn any oil or make any noise with the 5w-20 oil, then continue to use it. But if it makes more noise, or is burning more oil, you can switch it to...

Q: Check brake lights warning flahses, cruise control shuts off

Check the brake light switch or substitute a known good switch and see if symptom recurs.

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.