Skip the auto shop - Our mechanics make house calls

Q: Brake lights do not illuminate

asked by on

The other day I was informed that my brake lights are out. Went ahead and changed the fuse, was replaced with a brand new fuse from the store. That didn't work, we checked the bulbs, they looked good and illuminated with headlights on. Figured the brake light switch was the issue so that was replaced with a brand new one... still I have no brake lights. Any ideas?
My car has an automatic transmission.

Hi there, thanks for writing in.

You first need to check every fuse in the car, not just the ones for the brake lights. Sometimes fuses can have power over something not listed on the fuse cover. If all are good, then check for power in the brake light circuit at the fuse, and see if you’re getting any power there. If you are, then check at the connector to the brake light bulb holder, and see if you have power there with the brake pedal depressed. If there is power there, then it could be a failed bulb holder. If there isn’t power there, then it could be a bad connection or broken wire somewhere between the fuse and the brake light bulb, or it could be another failed brake light switch, though that is pretty unlikely. My guess is that there is another blown fuse somewhere, or there is a wiring issue somewhere in the car. This can become very tedious and time consuming, and is often a job best left for the professionals. You can contact a qualified technician through YourMechanic, who will come to your home or office and diagnose your electrical 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・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I properly install a transmission pan back on?

When installing the pan, the mating surfaces of the transmission and the pan should be clean, dry, and free of debris. To assure a good seal, I will usually use some brake cleaner, acetone, or any other type of solvent...

Q: How do I use voice recognition to delete an individual name tag?

The infotainment system can store up to 30 numbers at a time. If you want to store a new number, but already have 30 numbers stored, you will have to delete a contact. This is very easy: Press the...

Q: Too little flow on the EGR.

Have a certified mechanic check the operation of the EGR(exhaust gas recirculation) system. In many cases, the fault can come from an EGR valve that is not working properly or carbon build-up blocking the recirculation passages.

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.