2006 jeep grand cherokee third brake light not working

5.0 out of 5 stars Good value for the brightness
Reviewed in the United States on June 16, 2021

Super easy to install! Need a T20 torx bit for the two screws holding the light in place. Press the red tab to unlock the clip, and carefully pull the harness away from the existing light. Reverse the steps and done. I was able to change out the light in less than 5 mins. Rockauto, Autozone, O’rilley’s have these exact lights for almost $90. Great alternative for the price.

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Reviewed in the United States 🇺🇸 on September 6, 2022

Reviewed in the United States 🇺🇸 on August 17, 2022

It was easy to install but they’re super strong, my liftgate flies open real hard

Reviewed in the United States 🇺🇸 on February 19, 2022

A bit odd the company supplies the unit with the washer nozzle but gives you a big glossy paper telling you to reuse your old one.... for the cost of printing that maybe build with a decent nozzle.

Reviewed in the United States 🇺🇸 on March 20, 2022

This went on a Jeep that someone had Mickey Moused [TM] From the looks of it, the original had been LED, but, in any case, there was a different bulb socket just kind of wedged in there. There was a wad of aluminum foil and a wad of electrical tape. In any case, this fixed it right up! The windshield washer, which is built into it, worked just fine. Don't even want to know how much a Chrysler original would have cost...

Reviewed in the United States 🇺🇸 on March 17, 2022

Super easy install... works perfect. Used oem red sprayer from my old non working light, but it came with a black one.

Price for what I got was more than fair. Also includes new foam gasket material

Reviewed in the United States 🇺🇸 on April 28, 2022

As described and fitted my Jeep Grand Cherokee WKII.

Reviewed in the United States 🇺🇸 on December 6, 2021

Product works well but thin in plastic. Could be sturdier. Fit perfect on my 2006 Jeep Cherokee.

Reviewed in the United States 🇺🇸 on May 4, 2022

As info, does not fit a 2006 Jeep Commander

When you have a third brake light that stopped working, there are a few possible problems to investigate. In this post, we’ll go over the most common causes of third brake light failure. We’ll also discuss what you can do to resolve the issue.

1. Blown Fuse

If all three of your brake lights stopped working, a blown brake light fuse may be the problem. In that case, you don't need to replace the third brake light. To determine if the fuse is the issue, you need to check it. To do this:

1. Find the fuse box.
   1. The owner's manual should tell you where it is
2. Find the fuse for the brake lights.
   1. Refer to the owner's manual if you're not sure which fuse it is
3. Remove the fuse
4. Examine the fuse in good lighting. If the fuse wire is incomplete, or the inside of the fuse is sooty, the fuse is blown.

2. Short Circuit

Sometimes the problem goes deeper than a blown fuse. The fuse may be fine, but there may be a short circuit in the electrical system. If you replace the fuse and it immediately blows again, there is a short in the brake light circuit. Usually this means that the car body or frame has worn through the insulation on the brake light wiring harness. When the bare wire make contact with the body or frame, the fuse blows. These can be challenging to find, but they are easy to fix. If you can't find the short, it may be best to bring your vehicle to a shop and have the professionals take care of it.

3. Burned Out Bulb

Brake light bulbs don't last forever. The longer you keep your car, the more likely you will deal with a burned out brake light bulb. The good news is this is a very easy fix. All you need to do is replace the bulb.

To determine if the bulb is the reason your third brake light isn't working:

1. Access the third brake light bulb.
   1. If you're not sure how to access it, consult the owner's manual.
2. Remove the bulb and inspect it.
   1. Is the bulb housing cracked? If so, the bulb is no longer good.
   2. Is the filament blackened and/or broken? If so, the bulb is no longer good.

If you've determined that the bulb has gone bad, put in a new bulb. That should take care of the problem. Chances are the other brake light bulbs will burn out soon. To make it easier for your future self, replace all three bulbs at once.

4. Malfunctioning Brake Light Switch

Image Credit: kre57

The brake light switch is a basic two-wire switch that controls the brake light circuit in the brake system. You'll find the switch near the brake pedal. If you're not sure how to find it, consult the service manual. To test the brake light switch:

1. Grab an automotive test light and then attach one lead to a ground.
   1. If you don't have one you can get one at an auto parts store.
2. Turn the ignition to the on position, but don't start the car.
3. With no pressure on the brake pedal, touch the test light lead to each of the two wires on the switch. Only one wire should cause the test light to illuminate.
4. Put the test lead on the wire that did not cause the tester to illuminate.
5. Push on the brake pedal. If the switch is functioning, the light should now illuminate. If it did not, the switch is bad.

If the four tests above do not find the cause, then the problem is likely loose wiring within the brake light assembly. The wiring can come loose due to vibrations over time. If that's the case, you will need to replace the assembly. We carry genuine OEM third brake light assemblies for a variety of GM models. Find yours here!

Is there a fuse for the third brake light?

Where is the brake light fuse located on a 2004 Jeep Grand Cherokee?