When you notice that your brake lights aren’t working, you may have several things to look at. You could have a bad electrical ground or a blown a fuse. It could also be that the switch for your brake lights is not working. If this is the case, there are some steps you can take to fix it.
Checking for a bad electrical ground
If you’ve noticed that your brake lights aren’t working, you may need to check the electrical ground for your vehicle. This is a simple fix for a problem that may have worsened over time. Insufficient electrical basis can be caused by a loose connection or damaged wire ends. It can also be caused by corrosion.
You should inspect the sockets and look for distortion or corrosion on the contacts. If you find deterioration or discoloration, you can use a voltmeter to check the voltage at the terminals. You should review the wires behind the socket if you see no voltage at these terminals. If you find a damaged wire, you should try to clean it.
The wiring harness of your Jeep Grand Cherokee might also be wrong. This could cause the bulbs to blow. Then you should check the wiring harness for bad electrical ground. This will be very easy to check once you know the cause of your brake lights not working.
Another common cause of brake light issues is bad electrical ground. The brake light circuit receives current from the brake switch and can fail to function correctly if it is not connected to a bed. The insufficient electrical ground can result in a malfunctioning brake light, but it’s also possible that the wiring or bulb housing could be the problem.
The same circuit powers some vehicles as the turn signal light. In such cases, replacing the wire connecting the two could solve the issue. If your brake light is out on one side, the bulb or socket is the cause. You can also use an emergency flasher to test for bad bulbs. If you can’t find any, try replacing the bulb with a known good one.
Another simple but effective fix for the 1993 Jeep Grand Cherokee brake lights that aren’t working is to check the electrical ground. You can find a white/tan wire behind the left rear trim panel. It will usually be at the back of the socket, on the other end.
Checking for a blown fuse
If your brake lights are not working, it’s time to check your fuse. A blown a fuse can happen for several reasons, including bad electrical ground or a faulty switch. You should test the fuse by pressing its tip against both sides the fuse. If the connection is good, the light should illuminate. If not, you may need to replace the fuse.
To test the fuse, locate the fuse that controls the brake lights. This fuse is usually located in the engine compartment or under the dashboard. If you cannot find it, use your owner’s manual or ask a mechanic to check it. Alternatively, you can try to find the fuse using an electrical test light, which will cost about $10.
Another simple way to check for a blown a fuse is to test your brake lights. The fuse is not the issue if you can see one or more of the brake lights. If only one brake light is working, the problem may be with the switch itself. Remember that driving without brake lights is just as unsafe as driving with lights on.
If you cannot see the brake lights on one side, then it’s most likely the bulb or the socket itself is faulty. If debris is in the contacts, this may prevent the bulb from making contact. This can affect one or all three brake lights. A lousy brake pedal switch could also lead to a problem with the brake lights.
The brake light switch can be a simple problem to fix. It’s located inside the power distribution center, under the hood or dashboard. This box is referred to as the fuse box. If you can’t find it, check the owner’s manual.
If a blown fuse is the culprit, you may need to consult a mechanic with car electronics or diagnostics expertise. Magnus has worked as a car mechanic for over ten years and is a Certified Automotive Diagnostic Technician.
Checking for a broken brake light switch
If you notice that your brake lights aren’t working, it may be due to a broken brake light switch. This switch is found near the brake pedal. The button is usually clearly marked. To check if the brake light switch is broken, you should test its connections with a test light. Make sure the positive lead of the tester touches bare metal. The test light should illuminate if the wires are correctly connected, and the voltmeter should read 12V.
The switch is located in the dash just above the brake pedal. It’s a small plastic box with two or three wires coming out. If the button isn’t working, you should replace it immediately. You can try disconnecting the battery if the switch is still not functioning. However, this temporary fix is not recommended if you have an electric hood latch.
The brake light switch can also be a symptom of a malfunctioning brake booster. If this is the case, the promoter may fail to raise the pedal sufficiently to contact the brake light switch. Another possible cause is a short circuit on a wire that supplies power to the brake light switch.
If the brake light switch is defective, it will affect road safety. If you cannot replace the switch, call a mobile mechanic to perform the replacement. However, this procedure can compromise your security. You should only attempt this job if you’re sure that you have the necessary tools and know-how to replace the part properly.
The brake light switch is located underneath the dashboard. A broken brake light switch may result in the brake light not coming on. To test the button, you should see if the plunger touches the brake pedal arm. If so, it’s time to replace the broken bulb.
A broken brake light switch may also result in a blown a fuse. The fuse may be due to an electrical surge or old age, or it could be due to a circuit short.
Fixing a stuck brake light
If your brake light isn’t working, there are a few possible causes. Most often, the problem is a blown light bulb. In some cases, the light bulb is corroded or has frayed wires. Luckily, you can perform several simple fixes to get your lights working again.
One of the most basic solutions to a stuck brake light is to check the brake light switch. Most vehicles have a button under the dashboard or at the top of the pedal. The controller should have a stopper to turn off the light when pressed. Sometimes, you may have to remove interior trim to get at it.
Using a voltmeter, check the fuse causing the light to stay on. If blown, replace it with a new one of the same amperage. If this still doesn’t solve the problem, you can try to find the cause of the problem. Another possible cause is bad electrical ground. A loose connection of the wires could cause it, a bad relationship between the positive and negative sides of the switch, or even a damaged wire end.
Another simple fix to fix a stuck brake light is to check the wiring harness for a broken or corroded one. It could also be a problem with the socket. If this is the case, you will need to replace the socket. The new one is relatively cheap and should be easy to install.
You can also try resetting the ABS light by turning the ignition key off and on again. If you can’t do this, try looking for a shop with a code reader. A code reader can read the trouble codes from the controller memory. These codes will give you a better idea of where to start troubleshooting.
Another possible cause for a stuck brake light is a faulty switch or a blown a fuse. Changing the button is easy. You can reuse the pigtail harness if you can find one. You can also try using electrical tape to secure the pigtail.