Tesla Brake Light Not Working (This Should Work)

If you are outside your home in your Tesla car and your Tesla’s brake lights not working, it may cause trouble and danger to you. As it enhances your safety and reduces the risk of accidents.

If you are also going through the same problem. This article is definitely for you. , in this article, I will explain to you the reasons for your Tesla brake light not working along with their potential fixes.

Let’s get started…

How To Fix Tesla brake light not working

Prompt problem-solving is essential for safety and regulatory compliance. If necessary, track down professional advice.

You need to act right away to protect your safety and follow local regulations. I’m going to go through all the potential reasons and repair methods for your bike’s lights in this article to help you with this issue.

So continue to read the article.

1. Burn-out bulb

If your brake lights are not working, this is due to a burn-out bulb. When you apply the brakes or Tesla slows down, the light bulb glows. 

If you apply force on the brakes and the bulb does not fill with light, it may be due to the issue with the light bulb. This bulb is of is high-voltage and uses low current. 

Bulb burn-out or cracks due to overheating, use of extreme voltage, malfunctioning defect, or undue power input.


You have to check the bulb if it turned black or rusted, it needs an alternate. You can replace the light bulb of Tesla. Following are the steps to replace the bulb.

  • First, if you are driving, park your car in a safe location.
  • Identify which brake light is burnt out. 
  • Collect the tools such as a screwdriver.
  • Remove the lens cover of the brake light.
  • Check the bulb if your bulb is burnt out or cracked, simply replace it with a new one. (Make sure that the bulb matches the model of Tesla).

You must do regular examinations, so you can identify and replace the bulb before it burns out entirely. You should use the LED resistor kit. 

This helps maintain the current and voltage. Insufficient current and voltage burn the light bulb.

2. Wiring issue.

If the brake lights of your Tesla not working, this may be due to a wiring issue. The light brakes are associated with a pedal through wiring. 

When we apply force on the pedal, the pedal sends an electrical message to the light system. If there is any issue in the wiring system, such as any breaks cuts, or injured wires, the system cannot send a proper message and the light bulb does not receive any message.


Check for any faulty wires around the light brake system and make sure that all the wires are linked adequately; you can use a voltmeter to check the connection. 

Check if any faulty wire is replaced or repaired. You should use wire wrap. It may prevent the wiring system from being damaged.

You must check for any corrosion or rusty wire. You can use an electrical contact cleaner. You have to verify that all connections are dry when reconnecting wires. You should use a wire tracer. If you cannot detect the faulty wire by yourself try to use a voltmeter or multimeter. This helps you to investigate where the voltage drops, which harms the wiring system.

3.  Fuse inspection.

A fuse issue may be causing issues with your Tesla brake lights. The fuse is usually set up in the trunk of your Tesla or under your Tesla dashboard. The issue in the fuse box can stop the working of brake lights.


You should check for issues in the fuse and replace it. Check if the fuse is melted or damaged.

First, find the position of your fuse. Maybe in the rear or front trunk, it depends on your model of car. Find a brake light fuse. Check the fuse with the help of the tester. 

You have to make sure that you are using valid amperage. Use a puller tool to hold the blown fuse and pull it out from the socket.  Insert the new one.  And then test the circuit.

You have to check if any corrosion in the fuse connection because it can create resistance and heat. It can also blow a fuse. 

Use an electrical contact cleaner to clean corrosion. You must avoid overheating your card because it can melt or harm the fuse. Prevent your car from overheating. Must use the correct and good fuse and avoid using local fuse because it can easily melt.

4. Brake light switches issue

You have to check the Fuses and relay brake light issues that may be caused by faulty fuses or relays. 

Inspect the brake light fuse in your Tesla’s fuse box for any evidence of damage or blown fuses. Any faulty fuses should be replaced with new ones. 

Additionally, you have to make sure that the brake light relays are working properly by checking them.

If the Tesla brake light not working, this may be due to a switch issue. The switch is accountable for activating the brake light when you apply its power on the pedal. The switch activated the brake lights.


The switch of the brake light is present near the brake pedal. You have to check out for any physical impairment. Check the switch by pressing the brake pedal. 

If you notice that the switch is not activated you have to simply replace the switch. You should use the multimeter and test your brake light switch.

You should check if any dust, dirt, or debris in the brake switch is present or not. Gently clean all the connections.

5. Water infiltration

Water infiltration is another reason for your Tesla brake light failure. If water gets inside the system, it will lead to harm the internal system such as the wiring of brake lights. 

Moisture in the electrical can cause a malfunction in the light bulb. Water causes corrosion, short circuits in the electrical system, and the root of all malfunctioning brake and light bulbs.


You must explore the brake light area. Check the locations from where the water and moisture coming inside your Tesla system. Seal the possible entries of water using silicon sealant for this purpose.

You must clean and dry the area if you find any water or moisture. Clean all the affected areas of your car. Before cleaning, must disconnect all the electric connectors.

6. Brake Pedal Sensor Adjustment:

The brake pedal position is detected by sensors in your Tesla vehicles. The performance of the brake lights may be impacted if these sensors are misplaced or broken. 

You must check the sensor because sometimes the sensor is faulty and not able to detect when you apply the brake.


You must replace the sensor for the proper working of brake lights. Buy a new sensor according to your car model. First, collect all the tools such as a screwdriver, wrench, socket set, and pliers. 

Use safety precautions such as glasses and gloves. Make sure that your car is turned off. The brake sensor is located near the brake pedal. Remove the penal.

Remove all the old wiring attached to the sensor by using pliers. Remove the old one and inject a new one. Don’t over-tighten it. It can damage the sensor. 

Set all the wiring. Reconnect your car’s battery, start your car, and check by applying the brakes. You must check all the wiring system that is linked to the sensor. If any wire is loosely attached or damaged, replace it.

You have to check the temperature because extreme temperature, moisture, or situations prevent the sensor from working correctly. You must give time to your car to cool down.

7. Battery issue

If the brake lights of your Tesla not working, this may be due to the battery issue of the Tesla. Battery issues can result in the Tesla brake lights not working. 

Some causes of battery issues may include low battery, damaged battery, battery not connected properly, battery age, extreme temperature, faulty components of battery, and any corrosion.


You should check your battery if it is fully charged or not before using it. You must avoid your car from extremely hot or cold temperatures. 

You should check all the connections of the battery with the brake lights. Make sure that all the connections are properly drawn.

You should check the terminals of the battery. Check if any dirt or corrosion is present on it or not. Clean the relevant material. You should store your car in the instructed temperature ranges.

8. Updated software:

Updating the software on your Tesla is essential for the brake lights and other features to operate as efficiently as possible. Make sure your Tesla is on the most recent software release.

Here are some steps you can take to possibly fix the issue if you think software is to blame for the Tesla brake lights not working.


There are the following steps if the software is not updated and your Tesla brake light not working.

You can follow the instructions below to update the software.

·   Verify that the software in your Tesla is the most recent version that is accessible.

·   Check for any available software upgrades by connecting your car to a reliable Wi-Fi network or by using your Tesla mobile app.

·   Start the installation procedure and adhere to the on-screen instructions if updates are available. Problems with the brake lights and other software-related issues can frequently be fixed by updating the program.

The brake lights may occasionally stop working due to a brief bug in the software. A soft reset can assist in resetting the car’s software and perhaps fix the issue. 

Follow these steps to perform a soft reset:

  • Leave your Tesla car in a secure area.
  • Assume control of the steering wheel.
  • Constantly depress the brake pedal and the two steering-wheel scroll buttons.
  • Keep holding for another 10 seconds or more, or until the touchscreen of your car shuts off.
  • Give the buttons a release and watch for the display to come back on.

You can try a hard reset by following the below-stated steps if a soft reset doesn’t work to fix your problem:

  • Stop your Tesla completely in a secure area.
  • Put the parking brake on.
  • Assume control of the steering wheel and make sure the car is in Park.
  • Depress and hold both of the steering wheel’s scroll wheel buttons.
  • Press and hold the brake pedal while maintaining control of the buttons.
  • Hold on to the touchscreen for another 30 seconds or so until it goes off.
  • Depress the brake pedal and the buttons.
  •  After a little delay, depress the brake pedal to start your car.

 Final Thoughts

If your Tesla brake lights not working I hope this article is enough for you. In this article, all the possible reasons are discussed. Some of the solutions may include:

  1. Replacing the fuse of brake lights.
  2. Replacing the faulty switch of brake lights.
  3. Solving Environmental issues.
  4. Solving the sensor issues
  5. Replacing the bulb
  6. Solving the wiring issues.
  7. Solving the battery issues.
  8. Updating the software.

Apply these solutions according to your trouble. If you have questions related to the points you can ask voluntarily from me.

Where is the brake light sensor?

It is under the dash and near the top of the brake pedal. It depends on your car model.

How many brake lights can you drive without it?

You can drive safely with two lights if one of them is not working. But when both lights are not working, you must repair them.

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