Brake lights are one of the most an essential safety functions that her Jeep grand Cherokee has. They allow other motorists know once you room slowing down, and also that they have to slow under too. If her brake lights aren’t working, you’re method more most likely to get rear ended than normal. The great news is the troubleshooting brake lights that aren’t functioning isn’t as well difficult. The many common reason for this is a poor brake irradiate switch.
You are watching: 2004 jeep grand cherokee brake light fuse
You deserve to test even if it is or not your cool Cherokee’s brake lights are working all by yourself. Just ago up really close come the garage door and push the pedal. Friend should be able to see the brake lights illuminating the door. If also one of them comes on, you know that the brake light fuse isn’t blown. We’ll walk into more depth on that below.
Driving without the brake lights functioning is simply as unsafe together if your cool Cherokee’s brake lights were stuck on.
1. Examine the Fuse
If nobody of the brake lights space working, we space going to monitor the circuit from the fuse box ago to the brake pedal. At some point the power is not getting from suggest A to point B. We just have actually to find where the is.
Please keep in mind that tail lights have the right to work also if the brake lights are melted out. It is entirely feasible that every the brake lights melted out at the exact same time.
The an initial thing that you must do if every one of the brake lights space not working is check the fuse. It’ll be clearly labeled. It usually states something along the currently of “stop lamps” or stop. You deserve to pull it and visually check it come make certain that it is no broken.
Even if the looks fine, if girlfriend have an additional fuse that the exact same amperage, swap the anyway. What works better is making use of a basic electrical check light to identify if the circuit works. Wal-Mart and also any parts store will save them in stock, generally at $10 or less.
Just hook the clip of the light approximately a great ground and also touch the two metal tabs on top of the fuse. There is no must pull the fuse for this. It need to be “hot” on both sides. If that is not, replace the fuse. If that blows more than once, it’s likely that your grand Cherokee’s wiring harness has been damaged top top the way to the brake lights. Make sure to placed the very same size fuse back in
2. Examine your grand Cherokee’s Brake light Switch
Ok, now we’ve confirmed that there is strength going to the brake light circuit, it’s time to figure out whereby in the course from the fuse crate to the brake lamp the strength is lost. The most common location is thebrake irradiate switch. The good news is they room inexpensive and easy come replace.
Your cool Cherokee’s brake irradiate switch is under the brake pedal. It constantly should have actually power running to it, even if the key is off. Us need definitely need a check light in ~ this point. The video below shows exactly how to do this.
He has the brake irradiate switch the end of the vehicle, which makes it means easier come see. You execute not need to do this.
Basically, there room two wires, one is alway hot. As soon as you press the brake pedal down, it sends out this strength to the brake lights. This is the most most likely failure point.
If your auto has cruise control, the may show up as despite there room two brake switches. The various other one is to tell the cruise control to turn off when you press the brake pedal. You may need come consult your hands-on to determine which one is which. But, as a basic rule, the cruise manage switch will certainly not have power going to it as soon as the crucial is off choose the brake irradiate switch does.
3. Examine for a negative Ground
If there is a soil wire running to the brake irradiate switch, make sure that the is secured tightly and corrosion free. If girlfriend can’t discover the ground cable at all, run a jumper cable to substitute because that the ground wire.
Now test the brake irradiate switch. If that works, settle the ground wire.
4. Various other Wiring Issues
If your cool Cherokee’s brake light switch seen ok, and there room no brake lights illuminating in ~ all, examine the wiring harness going indigenous the brake switch to the bulbs themselves. There can be an issue with frayed wiring, wiring that has lost its ground, or a short/open situation.
If you have actually the “third” or committed brake light (the one not in your tail lights), inspect the harnessafter lock diverge. You know that it has actually power prior to this suggest since the third brake light is still gaining power.
See more: What Is The 2005 Jeep Liberty 3.7 Firing Order, 2005 Jeep Liberty 3
Look in the tribe (if applicable). Check any type of grounds the harness has in there. Make certain that the harness wasn’t damaged in there. It’s not unusual for cargo to carry out this.
Conclusion: Jeep cool Cherokee Brake Lights no Coming On
If your cool Cherokee’s brake lights are not working, it’s most most likely going come be led to by a poor brake light switch. Great luck addressing your vehicle!