Q: When replacing the brake switch, why would the 3rd brake light work and not all 3?

asked by on

When replacing the brake switch, why would only the third brake light work and not the other two

It is possible that both of the brake light bulbs are out. It is also possible that the other two brake lights are on a separate fuse from the third brake light which could cause the third brake light to work separately from the other two. I would recommend having a certified technician take a look at a wiring diagram to see the brake light circuit layout. This will help the technician to determine the cause of the brake light issue.

Was this answer helpful?
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. When replacing the brake switch, why would the 3rd brake light work and not all 3?

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 makes a chirping noise while in motion, the noise is more frequent based on how fast I'm traveling.

You should have the brake sensors checked to see if the brakes are worn to the sensor or the backing vent plate is rubbing the rotor. If both are good then you may have a front wheel bearing then is...

Q: After brake switch & assembly replacements, brake lights stay on

Hello. This sounds like you may have a short in the wiring that goes to the brake light switch. I would recommend having a qualified professional use a digital multimeter to test the brake switch circuit for excess resistance. If...

Q: Slight jerk when changing gears, especially when starting from a complete rest.

This may be a sign of a failing mass air flow sensor or a throttle position sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior...

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...
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...
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...