Skip the auto shop - Our mechanics make house calls

Q: Brake light switch continuously fails

asked by on

My brake light switch has failed more than five times in the past few months. It always seems to fail when the car is parked in the driveway and it is raining but not every time it rains. There seems to be no apparent correlation between switch longevity and weather patterns. I hit a deer over a year ago and replaced the front clip myself but had no issue for about a year. I have been all over looking for shorted wires and have been unsuccessful. Help please!

My car has 136000 miles.
My car has an automatic transmission.

A: Hello. You may want to check the connection...

Hello. You may want to check the connections at the terminal as it is not uncommon for these to get very hot and melt the plastic inside and corrode. This may also be a rusty ground which can also cause the switch to short out when too much power is drawn. If you need some extra guidance by an expert, a certified professional from YourMechanic can come to your car’s location to diagnose your brake light problem and move forward with the appropriate repairs.

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

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: Check Engine Light comes on in hot weather

Hello. The Check Engine Light will come on any time that the computer sees a problem with the powertrain in the vehicle. In order to know where the issue is coming from I would need to scan the computer for...

Q: Battery is dying, even after a jump start.

As you know the alternator is responsible for charging the battery and when not working properly will cause the battery to die prematurely. This may also be potentially related to the voltage regulator not working properly. This is a unit...

Q: No rear lights of any kind or working. ( No running, brake, or signal lights)

Check the ground wires on the back of the vehicle as they are either broke or loose. Over time the bolt that holds the ground wire to the frame tends to become rusty causing the ground to have a high...

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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control 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.