Q: There's no power to the third brake light

asked by on January 29, 2017

I have tried testing the wires and to no avail there's absolutely no power whatsoever
My car has an automatic transmission.

Brake light is not working Inspection $79.99 - $89.99 Get a Quote

Hello, thank you for writing in. The center high mount stop lamp is wired separately from the other lights to minimize brake light failure. The next step is to trace the wire down passed where the lift gate connects to the vehicle. The wiring often becomes damaged after years of the door being opened and shut so many times. If the voltage is still not present at the after the lift gate, then you will want to test the power heading to it from the brake light switch. A wiring diagram will help you tremendously during this process of tracing down the voltage drop. For more help with diagnosing the issue, contact our service department to schedule an appointment.

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

What others are asking

How much would it cost to fix and buy a radiator and lower hose for a 1997 Jeep Grand Cherokee?

A radiator and radiator hose is typically a relatively inexpensive fix, however you may want to consider having an inspection done on the vehicle to be sure there are not other issues that may be present. I would suggest checking...

Weak heat in all vents, cold air comes out of drivers. 2008 Jeep Wrangler

Hi there - I believe you have a problem with the heater air blend doors. As you know, the lack of heater function could have 5 causes: the engine is not getting up to correct temperature (center of the gauge)...

Local mechanic really messed up my car.

The park brake has a little contact switch that opens when the lever is pulled, sometimes a sugary drink gets spilled into the center console and leaves the switch sticky - usually requiring replacement. Your transmission solenoid seems to be...

Idle sounds real rough

This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to being injected...

My vehicle hesitates while im driving..

It sounds like you may have a clogged catalytic converter that is not allowing the vehicle exhaust to breathe correctly. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere....

Squeak/screech noise, burning smell

This may very well be related to the catalytic converter in your car. As you know, the catalytic converter is responsible for converting toxic combustion gases into less harmful gases to be dispelled into the atmosphere via your car's exhaust...

2006 Jeep Grand Cherokee 3.7l has a rough idle when stopped. I can be at a stop sign, red light, or just parked with the engine ru

You may have a bad spark plug or ignition coil and will need to have the computer tested for misfires. If you get misfire codes it will identify what cylinder is misfiring and will need to replace the plugs and...

Rusted subframe and rack & pinion, leaking struts - worth fixing?

You must have been driving in some extreme conditions to have so much rust that it needs a new subframe. If the only thing you need is a couple of struts and a rack,then it would be worth it to...

brake lights and turn signals on all the time and break lights don't work.

Hello. From what you describe, it appears that your vehicle may be experiencing electrical issues. If the brake lights are staying on at all times, then the first thing I would do is check the stoplight switch. If it is...

Related articles

How to Check Your Car Brake Lights
Car brake lights are essential for driving safely. Check the brake lights and brake fuses regularly to keep the brake system working well.
The Top 5 Selling Cars in Alaska in 2012
Alaska Alaska requires a different kind of vehicle to handle both the terrain and the wintery conditions. While some of the most popular options for the Alaskan terrain in previous years included options such as the Subaru Forester and the...
The Best Used Cars to Buy If You Live in a Cold Climate
If If you live in a cold climate, likely one of your biggest concerns when you are considering which used vehicle you should buy is how well it will perform in snowy, icy conditions. We have evaluated a number...