How To Fix 2004 Jeep Grand Cherokee Brake Lights Not Working?

It can be frustrating and potentially dangerous if your 2004 Jeep grand Cherokee brake lights are not functioning properly. In that case, fixing the problem is a must. But do you know how to fix the 2004 Jeep grand Cherokee brake lights not working?

Jeep Cherokee brake lights may not work due to several reasons. Here are the few must-check causes when brake lights are not functioning correctly.

1. Fuse issue
2. Wiring issue
3. Bulb issue
4. ABS system issue
5. Brake system issue

However, there is no need to panic. I will teach you step-by-step instructions on how to fix your 2004 Jeep Grand Cherokee brake lights so you can get back on the road safely.

How To Troubleshoot 2004 Jeep Grand Cherokee Brake Lights Not Working?

Things You Need:

1. Socket
2. Wrenches
3. Brake light bulb
4. Brake oil
5. Gloves

For the brake light bulb, I recommend Philips 12499 LongerLife Miniature Bulb for Jeep Cherokee brake lights. 

Always use good quality brake oil; I recommend Finish Line Mineral Oil Brake Fluid for Jeep Cherokee.

Problem 1: Fuse Issue

The fuse for the brake lights may have blown or become damaged, causing the lights not to work.

Solution 1:

1. Locate the fuse box. This is typically located under the dashboard on the driver’s side of the vehicle.
2. Check the fuse for the brake lights. The fuse will be labeled “brake lights” or “stop lights.”
3. If the fuse appears to be blown, replace it with a new one of the same amperage rating.
4. Test the brake lights to see if they are working correctly.

Read this if you have a problem with Kia brake lights- Kia brake lights not working

Problem 2: Wiring Issue

The wiring for the brake lights may be damaged or loose, causing the lights not to function correctly.

Solution 2:

1. Check for the wiring system for brake lights. The wiring system for the brake lights in a car is typically located behind the brake light assembly itself. The wiring runs from the brake light switch, located on the brake pedal, to the brake lights on the back of the car.
2. Check the wiring leading to the brake lights. Look for frayed or damaged wires and repair or replace them as necessary.

Problem 3: Burnt Bulb

The brake light bulbs may be burnt out or damaged, causing the lights not to work. So check for the bulb to resolve the problem.

Solution 3:

1. Locate the burnt bulb by looking for the brake light that is not functioning.
2. Open the trunk and locate the brake light assembly. It is usually located on the top or bottom of the trunk lid.
3. Once you have access to the brake light assembly, locate the burnt bulb. It will typically be in a socket that can be turned or pulled out.
4. Carefully remove the burnt bulb by turning it counterclockwise or pulling it straight out.
5. Carefully insert the new bulb into the socket, and ensure it is facing the correct direction. If the bulb has a base with a round or oval-shaped end, it should be facing downward.
6. Turn or push the new bulb into place until it is securely locked in the socket.

Are your GMC sierra brake lights problem? Check here: GMC Sierra brake lights not working.

Problem 4: ABS System Issue

Jeep Cherokee also comes with a modern ABS so that it can be the culprit for brake light issues. There may be an issue with the ABS system when the brake lights are not working.

Solution 4:

1. First, check the ABS system’s diagnostic codes to determine the issue.
2. Once the problem has been identified, gather the necessary tools and parts to fix the ABS. This may include wrenches, sockets, brake fluid, and any specific parts recommended by the diagnostic codes.
3. Disconnect the battery and remove the ABS system’s brake lines. Be sure to catch any brake fluid that may spill out during this process.
4. Replace any faulty or damaged parts as needed. This may include the ABS pump, ABS modulator, ABS sensor, or ABS valve.
5. Reinstall the ABS system’s brake lines and refill the brake fluid to the correct level.
6. Reconnect the battery and test the ABS system to ensure it is functioning correctly.

Problem 5: Faulty Brake System

Other issues that may cause brake lights not to work include problems with the car’s brake system, such as a faulty master cylinder or damaged brake lines.

Solution 5:

1. First, check for the brake oil level in the reservoir. If it is low, add more brake fluid until it is at the recommended level.
2. Inspect the brake pads for wear. If they are worn down, they will need to be replaced.
3. Check the brake rotors for any visible damage or wear. If they are damaged or worn, they will need to be replaced.
4. Inspect the brake calipers for any visible damage or leaks. If they are damaged or leaking, they will need to be replaced.
5. Check the brake lines for any visible damage or leaks. Repair or replace if they are damaged or leaking.

Check this if you are looking for an easy solution for faulty roof marker lights- Roof marker lights not working.

Why Are Jeep Grand Cherokee Brake Lights Not Working When Headlights Are On?

There could be several reasons the jeep grand Cherokee headlights are on, but the brake lights are not working. Some potential causes include the following:

1. Faulty brake light switch
2. Wiring issues
3. Faulty brake light bulbs
4. Fuse problems

Read here if your Honda Civic brake lights Won’t turn off

Frequently Asked Questions (FAQs):

Conclusion

In conclusion, several steps can be taken to fix the 2004 Jeep Grand Cherokee brake lights that are not working. These include checking the bulbs, fuses, wiring connections, and the brake light switch and brake pedal assembly. If you cannot resolve the problem, it may be necessary to seek a mechanic’s or dealership’s assistance.