Why My Roof Marker Lights Not Working – Issues and Fixing

Having your roof lights on is a safety feature that lets other drivers see your car while on the road during the day. They also assist you in seeing more clearly on the street, whether during the day or at night time. The running lights should be repaired as quickly as possible if anything goes wrong. Regardless of whether your vehicle has high beams or a separate light assembly for the running lights, the procedure for repairing them is the same in all cases.

Despite their modest size, hummer h2s are big vehicles challenging to steer at high speeds. These vehicles must be equipped with both running and flashing lights to ensure the safety of others.

These make it simpler for other motorists to detect when a truck is being driven along the shoulder of the highway or the shoulder. While not all daylight lights are out of commission, some customers have reported that theirs are not functioning correctly. This article is intended to give you troubleshooting steps that you can use to resolve the issue on your own with the help of this article.

Main issues that affect the roof marker lights

roof marker lights not working
Problems affecting roof marker lightsSolutionEssential products
Loose connectionTighten all the loose wires or connectionsCheck the Phillips screwdriver from Amazon
A burned-out bulbReplace your bulbCheck this incandescent bulb from Amazon
Blown fuseTurn off the engine and close the hoodCheck this Fuse assortments from Amazon

1. A loose connector

Close the hood of the vehicle and turn off the engine. In the engine compartment, check for the running light assembly, which is located near the front of the engine compartment.

Get to the part of the assembly that contains the operating lights. Some vehicles are equipped with a separate roof light assembly; however, most vehicles rely on the headlight system for this function. As with most autos, screws are typically used to attach light assemblies to the car. To disassemble the light body, a Phillips screwdriver is required. By placing the screws in a safe location, you can maintain complete control over the situation.

Pull the electrical connector positioned on the back of the unit to make it operational. If the connector has become loose or has come out of its socket, it is essential to reattach it to the computer. One more tug will determine whether or not it is still in working order. If the daytime running lights are still not working, a burned-out bulb may be the root of the problem. The headlight assembly should be reinstalled, and the hood should be closed to complete the procedure.

Check the Phillips screwdriver from Amazon

2. A blown fuse

After you’ve turned off the motor, close the hood tightly. Determine the location of the fuse box in the engine compartment. This component is mostly always found immediately behind the battery.

Removing the fuse box lid from the vehicle’s engine compartment. Ford and Chevrolet’s automobiles are equipped with a fuse box cover with a schematic indicating each fuse’s placement within the fuse box at the bottom of the cover. Locate the fuse labeled “DRL,” which stands for “Daytime Running Lamp,” and remove it from the fuse box. If you are unsure of the location of the fuse, consult the owner’s manual for your vehicle.

The repair is complete after the “DRL” fuse is removed from the plug socket and replaced with a new fuse. To complete the installation, replace the cover on the fuse box and close your hood.

Check these fuse assortments from Amazon

3. A burnt bulb

Remove the bulb used by the daytime running lights from the car’s ignition system. If you are unsure how to disconnect the bulb, consult your owner’s manual for detailed instructions on accomplishing this task. Typically, the process involves spinning the bulb socket anti-clockwise to detach it from the assembly, then pulling the bulb out of it after the socket has been rotated in the other direction.

If you want to know the bulb I used, and I would prefer, check the incandescent bulb from Amazon

It is preferable to replace the incandescent bulb with a more energy-efficient alternative. If you are still unsure about which type of bulb to use, go to your owner’s manual once again for clarification. To complete the installation, reinstall the unit into the car and close the hood to secure it. If the daytime running lights are still not working correctly, a blown fuse may cause the problem.

Fixing a light switch 

Fixing a light switch 

step 1; Make sure you have all of the necessary supplies

You should make sure that you have all of the essential supplies on hand if you decide to handle the situation independently.

Step 2; make sure that everyone is safe

Once you’ve gathered everything you’ll need, you should take precautions to keep yourself safe when working with electricity. This includes turning off the circuit breaker, light switch, and other necessary steps. In addition, make sure that your cables are correctly capped, and mark the wires you’ll be working on with electrical tape.

step 3; find the source of the problem

If you suspect that the problem is caused by faulty connections established by the light switch itself, you should use a circuit tester to determine whether the problem is caused by something else entirely. It is most likely that you are dealing with a faulty circuit cable, and you should seek the assistance of a licensed electrical contractor to repair it. Although many tasks can be completed without the aid of a professional, others must be completed with their assistance.

Step 4: Replace the switch with a new one

Following removing the light switch cover, you may learn that, based on the results of your inquiry, you’ll need to replace the switch. This technique consists of simply a few simple steps to complete. To begin, you’ll need to first take the light switch from the wall and place it somewhere safe.

A screwdriver will then be used to fasten the new light switch, ensuring that all of the wires connecting to it are the same length as those already attached to the existing wall sockets. After completing the cable matching process, you can screw the new light switch cover into place on the wall and turn on the electricity to complete the installation process.

Reasons a light socket should be replaced

Reasons a light socket should be replaced

According to Chevrolet, while the vehicle is in motion, retaining pegs keeps the light bulb in place. When you remove the light socket to gain access to the daytime running light, you will almost always become aware of the problem within a short period after doing so.

In some instances, you may only notice minor damage because the bulb socket has a yellowish or off-white hue to it rather than being entirely black, and you will not see any damage as a result.

It is expected that intermittent operation over bumps will occur if the plastic has melted to the point that it can no longer keep the bulb in place efficiently. To avoid wasting any more time, we propose that you replace this deteriorating socket rather than trying to squeeze another half-year or a year out of it. To complete the project, the two- and three-wire light sockets were cut to length and connected into the original wiring harness using a soldering iron.

How to diagnose a DRL relay?

How to diagnose a DRL relay

When driving in daylight, start the car engine when there is a passenger in the vehicle, with the parking brake disengaged and the gearbox in the drive. When you remove the DRL relay from the socket and connect your voltmeter to the terminals on the relay socket, you can see if there is voltage on one relay socket terminal and partial power on another terminal on the relay socket. If there is voltage on one relay socket terminal, there is no power on the other terminal. Continue with the other terminal by using the same procedure as you did with the previous terminal.

Make sure that the other two ports have excellent grounding conditions by performing a second inspection after that. If the DRL relay control coil does not appear to be correctly grounded, it is possible that the ambient light sensor or the body control module is damaged and has to be replaced.

If you want to know the voltmeter I used, check the KAIWEETS voltmeter from Amazon

You might be interest to read also our another comprehensive article of: Sailun s637 vs. Goodyear G614 – You Should Choose the Best One and 3.42 vs. 3.73- Is There a Big Difference You Should Need to Know


If the light does not turn off immediately after installing it, the wiring has likely been done incorrectly. The controller may be malfunctioning if the switch has been working correctly for some time and you suddenly discover that the light remains on even when the switch is turned off. The most likely cause of this issue is a short circuit between the toggle and the circuit terminals.

The most likely cause of the problem is that the cable leading to the on-light comes into contact with a live electrical conductor. All wires should be disconnected, the breaker should be turned on, and the live circuit wire should be identified with a voltage tester.

About Me

This is Cody Wingfield; I’m an author and a Freaky Campers enthusiast. My three favorite activities are Cycling, Rving, and Cooking for me. OutingX is a planet of mine where I will share my exploring history, story, freaky experiment, and personally gathered experience with you.

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