Q: brake lights do not work, but running lights, turn signals, and hazards do.

asked by on

As I was pulling extra wires out of my retired cop car, I shorted or screwed up my brake lights system somehow. The running lights, hazards, and turn signals all function properly, but the brake lights do not work. After extensive examination, I determined that the brake light switch is not in use (there is no harness/all the wires are cut and taped elsewhere). I've run voltage at 100 different spots in the car and still haven't found an answer-- even following the wiring diagram isn't extremely helpful because the stock brake light system is not in use. All the fuses appear to be in good working order. The only way I was able to get my brake lights to activate was using the cruise deactivation switch as a brake light switch which caused the lights to be on when the pedal was released and to turn off when the pedal is pressed. The car is not equipped with cruise control for the record. Any help would be greatly appreciated!

My car has 150000 miles.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. brake lights do not work, but running lights, turn signals, and hazards do.

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: Stops accelerating while driving - 2002 Ford Crown Victoria

The problem is most likely in the fuel supply system of the vehicle. When the vehicle is running okay, turn the key on and off to see if you can hear the fuel pump in the tank. Now when the...

Q: My dashboard says car not in park but my shifter is in park position it won't start of course I have a 2014 fusion HELP

The first thing to check is the shift cable ends are good and then the shifter is moving the transmission lever. If it is moving back and forth and the cable ends are good then the problem is in the...

Q: Vehicle rough at startup

The rough running is most likely due to an engine misfire. Depending on the mileage of your van, you may need to have a tune up done which may solve the misfire problem. It is also possible that your ignition...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...