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Why Do Jeep Interior Lights Won’t Turn Off? (How to Fix)

Are you having trouble with the interior lights in your Jeep always staying on? Unfortunately, this is a common issue in some older models and can be caused by various factors. With the proper diagnosis and a few simple fixes, you can have your Jeep’s interior lights working again in no time. Let’s see why do Jeep interior lights won’t turn off?

Jeep interior lights won’t turn off due to issues with the rear dome light, the dimmer switch, connectors in the door, the fuse, and the instrument cluster ground fault. This can easily be fixed by adjusting the light switch, properly checking the dimmer, and fixing the fuse and wiring.

In this article, I’ll discuss the possible reasons and solutions for this issue. From troubleshooting the issue to replacing or repairing the unit, I’ll guide you through the process of getting your Jeep’s interior lights back to normal.

What are Interior Lights?

The dome lights, known as interior lights, play an important role in illuminating the cabin of a truck, car, bus, or any other vehicle. They are seen overhead and have auto-lighting switches.

The automatic dome lights turn on and off automatically when the door opens and when the engine is turned off. Many automated dome lights are designed to fade to assist the eyes. Dome lights also give better lighting for drafting a report or reading a map.

A dome or interior light emits colored lights such as red, blue, or green instead of white light. Their replacements exist in various materials and designs and require complete assembly.

Why Won’t the Jeep Interior Lights Turn Off?

Why do Jeep Interior Lights Won't Turn Off? (How to Fix)

The interior lights of the jeeps are designed manually and functionally to operate automatically whenever you open and close the vehicle’s doors. Sometimes, there is malfunctioning where the light stays on always and doesn’t get turned off.

The following issues cause this kind of experience:

1. The Issue with Rear Dome Light:

The rear dome light is turned on accidentally, so it is better to keep an eye on it. It can be turned on and off by simple press. This light can be accidentally tapped during loading and unloading the things from the back.

Children also love to play with lights by pressing the switch, which can sometimes lead to frustrating situations.

It is also recommended to check the connectors indoors, which can sometimes create an issue with turning interior lights if they are not connected to the door connectors. This dome light will automatically turn off after 15 minutes, even if it is left ON.
Why do Jeep Interior Lights Won't Turn Off? (How to Fix)

2. The Issue with Dimmer Switch:

The issue with the functioning of the interior light can be manipulated through the dimmer light switch. Sometimes, there is an issue with the settings/position of the knob.

If the knob is set to 'Complete ON' or in 'Dome Light ON' position (The setting, which is adjusted to the furthest position), there is chance that the interior lights are turned ON.
Why do Jeep Interior Lights Won't Turn Off? (How to Fix)

3. Failure in Closing the Doors:

The vehicle’s interior lights are connected to the vehicle’s door. Lights are also connected to the trunk in some cases.

When the door is opened, the lights turn on and turn off after closing the doors. If in some cases, the interior lights still do not turn off, the issue might be with the failure to close the doors properly.

4. Issue with Door Connectors:

If the light switch is not the case, check the door connectors.

The interior lights sometimes pose an issue in functioanlity when you take your jeep’s door off and then forget to reconnect the cables.

The door connectors must be connected for interior lights to work properly. It is better to look at the connectors to see whether they are fastened in good shape.
Why do Jeep Interior Lights Won't Turn Off? (How to Fix)

5. Faulty Instrument Cluster:

The issue with the instrument cluster’s ground fault can sometimes cause the dome lights to stop working. It is an electrical failure in the system.

This issue can be fixed by connecting the new instrument cluster.

This issue can be fixed after detection. Although the issue is less in new models, there are considerable number of reported cases from the old ones.

Why do Jeep Interior Lights Won't Turn Off? (How to Fix)

6. Damaged Switch:

There are lights fitted in a fashion with a manual switch on the vehicle’s roof, door, and dashboard. Sometimes, the interior lights won’t turn off if the switches are damaged, leaving the interior light in ‘ON’ position.

7. Faulty Fuse:

The stock dome light can be burnt due to a faulty fuse in your Jeep. Therefore, you have to be very careful while changing the fuse.

Many jeepers complain that as soon as they connect a new fuse, that also gets burnt immediately.

The issue could be a rubbed wire on the passenger side floorboard, specifically near the harness, where it turns and proceeds up the column to the light.

DTC Relevant to Interior Lights Stays On:

Diagnostic Trouble Code (DTC)

Codnition to log DTC

B2615

  • When the Body Control Module (BCM) receives a request signal to illuminate the dome lamps, and the dome lamp supply voltage circuit is shorted to ground, the DTC is logged.

  • When the Body Control Module (BCM) does not receive a dome lamp illumination request signal and the dome lamp supply voltage circuit is either shorted to voltage or open, a Diagnostic Trouble Code (DTC) is logged.

  • The rear fuse block TBC 3 has experienced a loss of battery supply voltage to the BCM for more than 1 second.

B3801

When the Body Control Module (BCM) detects that the signal circuit for the dome lamp switch is grounded when the switch is activated, it will immediately turn on the dome lamps.

Jeep Interior Lights Won’t Turn Off- How to Fix?

We know that dome or interior lights are usually seen over the roof, door, and dashboard. There are reasons which won’t let the car’s interior lights turn off, so it is crucial to know the fixation of these problems.

Here we will discuss some methods for fixing the problem that will stop your car’s interior lights from turning on without any use.

STEP 1– Adjusting the Light Switch:

It is easy to turn on the lights using a switch. It is close to the car roof’s light or on the dashboard, and you forget to turn it off in some situations. You can adjust the light switch.

STEP 2 Checking the Light Switches at Doors:

It is recommended to check the switches on the doors properly. The interior lights of vehicles are in the control of the person. You can open and close the doors one after another to check if the light turns off.

You can locate the manual switch on the door if this doesn’t work. Press it to turn off the interior light.

Once you press the switch, you will feel a click. The light does not go off after this action. It indicates that the switch on the door is faulty, and you can fix this defective switch or take a technician's help.

STEP 3 Checking the Dimmer Setting:

There are knobs on some cars that can control the brightness of the light, as seen on the dashboard. The setting mode on the highest indicates that it can affect the interior light.

You can change or fix this setting if it is on the highest level.

STEP 4 Checking the Wiring:

If all the suggestions mentioned above do not work, you can see a technician or recheck the wiring.

For example, you can trace the wiring of your vehicle’s interior lights. It will ascertain any disconnection or faults in the car that the abovementioned steps cannot easily discover.

The wiring of your interior lights vehicles runs from the switch across the vehicle's frame. Therefore, you should be careful in performing this action and can consult a professional auto technician to fix the issue.

Sometimes, the interior car lights won’t turn on in some cases. If you also face this problem, you can seek help from the auto technician to fix the interior lights.

Does Interior Lights Drain Battery?

Interior lights can drain the battery between 4 to 8 hours if the lights are left on for longer. The average battery life of a car is between 50 to 100 amp-hours. 

Most of the vehicles have their interior lights to about 0.5 to 1 ampere, and the battery is expected to power the lights for about 50 to 200 hours.

Final Thought:

Interior lights are a crucial component of any vehicle, providing convenience and comfort for the driver and passengers. Unfortunately, they are often forgotten about until they malfunction.

If you find yourself in this situation, you should take your car to a qualified mechanic for an evaluation and repair. Don’t let a broken interior light ruin your driving experience – stay safe and get it fixed!

Also Read:

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Frequently Asked Questions (FAQs):

Can the interior lights of the vehicle be responsible for draining the battery?

If the car is parked somewhere for a long time and the interior lights are on, it can drain the vehicle of the battery. Thereby it can leave the person stranded. Also, if the car door is not closed correctly, it can lead the lights to be left on. If this thing continues for too long, it can also drain the car’s battery.

How can you turn off the dome light in the car?

The dome light of the car is operated through multiple switches. The primary control is seen on the adjusted knob of the vehicle’s dashboard. It is located on the left side of the steering wheel or near the head switch.

How can you adjust the dome light in the car?

You can adjust the dome light of the car through three options:

  • Changing the dome light switch of the car
  •  Locating each door switch by opening and closing each door one after another
  •  Starting the car and letting it run for about 3-5 minutes

Do the interior lights have the capacity to turn off automatically?

Interior lights can turn off automatically, depending on the model and vehicle type. Most of the interior lights are automatic. Therefore, these can turn off no matter whether the auto headlight mode is activated or not.