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.

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

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 light switch continuously fails

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: Spilled drink on my gear shifter on my Toyota RAV4 2015 model, need some help in taking it apart and removing it to clean it

Hi there. We really don't have a service for this particular application quite yet - but, we might be able to help you. There are two options to consider. First, you can purchase a service and repair manual that should...

Q: How do I use the luggage cover?

Your car may be equipped with a luggage cover (it’s optional equipment). If it is, then you have an important tool for protecting items in the back from exposure to heat, light and even prying eyes. Here’s how to use...

Q: My 3rd brake light still works but not lower lights, cruise will not set.

The brake lights in the back are all powered by the same wire as the third brake light is. You have to check the brake light bulb in the back on each side and make sure they are good. You...

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...
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.
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.