Tesla Trunk Light Not Working (How To Fix)

If you are returning from your home late at night after going a lot of shopping, and you want to adjust your all items in the trunk safely but suddenly your trunk light stops working

These are troubleshooting conditions for you. Do not panic. Because after reading this article and following the solutions I hope you can easily solve your problem.

Let’s Get Started…

How To Fix Tesla trunk lights not working?

Tesla trunk light not working besides this, multiple reasons directed to this trouble. We shall discuss all the possible reasons as well as the solution to these problems in detail. 

Some of the common causes are faulty bulbs, switch issues faulty fuse of trunk lights, sensor issues, faulty control modules, software not updated, or wiring issues.

1. The faulty bulb of the trunk light

If your trunk light is not working it may be due to some reasons and one of them is the faulty bulb. 

Any fault in the bulb can lead to this problem such as bulb wiring issues, the bulb may burn out, bulb age, or voltage malfunctions.

Solutions

First, you have to check the bulb if you discover any physical damage or injury such as breaks, or changes in the color of the bulb such as the bulb becoming black. 

It means your bulb is blown out. If you want to change the bulb of the trunk you can follow the following steps:

  • Firstly gather all the tools such as a screwdriver, gloves, and a voltmeter.
  • You must have a bulb of the correct type that matches your model Tesla.
  • Before starting you should verify that your car engine is off.
  • If the bulb is blown out recently give it some time to cool.
  • Before touching it, open the trunk.
  • Remove the access panel.
  • Carefully remove the old bulb from the socket by twisting the counterclockwise direction
  • Insert the new one by twisting it clockwise until it locks totally.
  • Close the Panel.
  • Close the trunk and check it.
  • You must use LED lights because they have a long life span, and are less sensitive to voltage malfunctions and reform vibrations.
  • Then you have to check all the wiring that is bound to the trunk lights. If anything is damaged to the trunk light bulb replace the wire.
  • You should avoid forming undue vibration; because it can cause the trunk bulb to blow.
  • You should use any material that soaks up shocks and provides secure bulb housing. You have to use high-quality bulbs to avoid overheating.

2. Sensor issue

In your Tesla car, there is a trunk light sensor. When you open or close the trunk, the sensor senses the trunk opening and closing.

When the trunk is open, the sensor detects and sends signals to the control system, and the light of the trunk glimmers.

If you are facing problems with the sensor it is due to any obstructions, wear and tear, corrosion, physical damage, temperature changes (extremely hot or cold), and sensor age or connecting issues.

Solutions

You should check the alignment of the trunk sensor. Adjust the alignment to make sure it is properly in contact with the trunk mechanism. 

You should check the area all around the trunk sensor. If any debris or any object blocks the signals of sensors you have to immediately remove all the obstacles and barriers between the sensor and the trunk.

You should protect your car from extreme conditions. High temperatures humidity or explore to water can affect the sensor functions. 

You can seal the electrical components to prevent water ingress. You should investigate all the wiring around the sensor, any faulty wire can disrupt the communication between the sensor and the electrical system of the car

You should check the sensor. If the sensor is damaged you can replace the sensor. Keep in mind that Tesla is a complex vehicle. Charging a sensor is a complex thing you need proper knowledge and tools for it.

3. Battery issues

The battery of your Tesla car is responsible for conveying the power to the trunk lights. If the battery is not able to deliver enough amount of energy that is needed for trunk lights to operate.  

The trunk light does not glow when the trunk is open. Some possible causes why the battery is not giving sufficient power may include a dead battery, low battery, or any corrosion on the terminals of the battery.

Solutions

You have to make sure that your battery is fully charged and is in good situation. Any fault can impact the supply of power to the trunk lights. To change the battery you can take some specific steps given below:

  • Gather tools such as screwdriver, multimeter, and pliers of voltmeter.
  • Find the battery house. This could be in the trunk itself or behind the panels.
  • Before changing the battery you must disconnect all the power connections and remove the wiring from the old battery.
  • Note the positive and negative terminals of the battery.
  • Remove the old battery for housing by using tools.
  • Don’t touch any terminal of the battery with your bare hands. You can use gloves for this purpose.
  • Insert the new battery. Orientation wiring connections of the new battery must be correct.
  • Reconnect all the power.
  • Test the trunk lights. You can use the multimeter to test the voltage of the battery on various components associated with trunk lights.
  • You can use a multimeter to identify which part there is an issue.

4. Fuse issue

The trunk lights not working is due to a blown-out fuse in your Tesla. The fuse may be blown due to some reasons such as electrical overload, short circuit, circuit malfunction, or any internal fault in a device.

Solutions

You must check if your fuse is blown out due to overloading. You should avoid connecting too many power-hungry devices to a single circuit. 

You can allocate the load. You can use advanced diagnostic tools that come with your Tesla. These tools help you to recognize the specific components that may cause the fuse to blow.

You must check for the water ingress. Check for any water damage signs if there is leakage of water or not. 

You have to ensure the proper voltage level for your battery. Low voltage leads to this problem. Ensure your battery is giving the ethical voltage required for the fuse.

Change the fuse if your fuse is not working. To replace the fuse box, you can do the following steps:

  • First, you have to find the fuse box that contains the fuse for the trunk lights.
  • Amass some tools, such as a set of fuse pullets or needle-nose pliers.
  • You have to make sure that your car is turned off.
  • To find out more about the fuse for the trunk lights, consult the fuse box diagram.
  • With the use of a fuse puller, remove the faulty fuse for the trunk lights.
  • Take it out with the help of a socket.
  • Place the new one in the vacant fuse socket.
  • Examine the trunk lights.

5. Faulty control module

A faulty module led to a malfunction in trunk lights. This may be caused due to water damage, any wear and tear, electrical defects, or software glitches. 

The control module is accountable for the control of the trunk lights. This is an integral part of the electronic system of your Tesla. 

You can also use the waterproof module. You must have to check the power surges, and voltage spikes because they can damage the control modules

You can replace the control module by following the procedure given below:

  • First, you must turn off the electrical wiring to prevent any electrical harm.
  • Identify the position of specific modules such as infotainment systems autopilot modules or battery modules.
  • Remove the panel by using tools such screwdriver or trim.
  • Disconnect the module and remove the module.

6. Wiring problems

If the wiring connections are loosely bound with the trunk lights it might disrupt the flow of current to trunk lights. This problem arises due to any physical damage, insulation damage, corrosion, or wear and tear.

Solutions

You should check all the wiring around the trunk lights. You have to identify any visible signs such as frayed wire, any disconnections, or corrosion. 

Corrosion can disintegrate the wiring insulation. You can use anti-corrosion products for connectors and exposed wires. You should use a multimeter to check the continuity of the wiring.

You have to check all the connections if you find any loosely bound wire to tighten the wire. During working you should keep in mind that the wiring system is not safe. 

That’s why you have to disconnect the battery first before attempting any repairs. You can use wire repair kits that contain connectors or crimping tools. You can use electrical tape to insulate exposed wire.

7. Software issues

If you are experiencing a problem with your Tesla trunk lights it may be due to software glitches or incorrect settings in your car software.

Solutions

You should update the software of your Tesla vehicle by following the given below steps:

  • Connect to stable internet connections. This is important in downloading a new software update.
  • You should go to the menu. Check if any updates are available.
  • You have to make sure that your car is parked when you are going through this process.
  • Check if any update is available. Follow the prompts to start downloading new software.
  • You have to be patient because this process takes some time.
  • After the updating process is complete your Tesla will be restarted.
  • Know you have to check the proper functioning of trunk lights.

Other than updating the software you can also reboot your Tesla vehicle. To reboot your vehicle follow the steps:

  • First, park your car in a safe place.
  • Press and hold both scroll wheels.
  • Hold until the black screen appears. This can take 10 to 15 seconds.
  • Release the scroll wheel. The Tesla logo will appear on your touchscreen.
  • The touch screen can be used for the car control again.

Final Thoughts

We have already covered every potential reason why your Tesla Trunk lights don’t work as well as their possible fixes. This article explains the issues and offers remedies. The remedies consist of:

  • You should update the software.
  • You should resolve the issue of faulty wire.
  • Resolve the control module issue.
  • You can check for faulty or blown bulbs of trunk lights.
  • You have to solve the issue of the fuse of trunk lights.
  • You can resolve the issue of battery
  • Solve the issue of the sensor.

I sincerely hope that this information helps you solve the problem with your Tesla trunk lights. You can troubleshoot and fix issues with the planned charging feature by taking the preceding actions.

We went into great detail on each of these and addressed any queries you might have in mind. Please get in touch with us if you have any information to share with us on this subject. We’d be thrilled to hear from you.

Can I open the Tesla trunk with Siri?

You can control your Tesla from your iPhone. 

Even better, you can say “Hey Siri … Open Trunk” and it will perform the assigned task.

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