If you own a Tesla, you likely rely on your key fob to unlock and start your vehicle. But what do you do when your key fob stops working? In this article, we will discuss some potential solutions to fix a Tesla key fob that is not functioning properly.
Check the battery
The first thing to do when your Tesla key fob stops working is to check the battery.
Over time, the battery in your key fob can wear down and lose its charge, which can prevent it from functioning properly.
To check the battery, simply remove it from the key fob and test it with a voltmeter. If the battery is dead, it will need to be replaced.

Check the range
Another common issue with Tesla key fobs is that they may lose their connection to the vehicle.
This can be caused by a number of factors, such as interference from other electronic devices or simply being too far away from the vehicle.
To troubleshoot this issue, try bringing the key fob closer to the vehicle and pressing the unlock button. If the key fob is within range and functioning properly, the car should unlock.
Try a hard reset
If the above steps do not fix the issue with your key fob, you may need to perform a hard reset. To do this, follow these steps:
- Open the trunk of your Tesla and locate the small, rectangular reset button on the left-hand side of the trunk.
- Press and hold the reset button for 10 seconds.
- Release the reset button and close the trunk.
- Press the unlock button on your key fob. If the key fob was previously not functioning properly, it should now be reset and working again.
When Should You Replace A Tesla Key Fob?
In general, you should replace your Tesla key fob if it is not functioning properly or if the battery has worn down and needs to be replaced.
Some other reasons to replace a Tesla key fob include if it has been damaged, lost, or stolen.
It is also a good idea to have a spare key fob on hand in case of emergencies. You can purchase a replacement key fob from Tesla or from a third-party retailer.
How Much Does It Cost To Replace A Tesla Key Fob?
The cost to replace a Tesla key fob will vary depending on where you go to get it replaced. If you go to a Tesla service center, you can expect to pay between $100 and $450 for a replacement key fob, depending on the model of your vehicle.
If you go to a third-party retailer, you may be able to find a replacement key fob for a lower price.
However, keep in mind that using a non-Tesla key fob may void your warranty or cause other issues with your vehicle. It is always best to use a key fob that is specifically designed for your Tesla.

How Do I Resync A Tesla Key Fob?
To resync a Tesla key fob, follow these steps:
- Open the trunk of your Tesla and locate the small, rectangular reset button on the left-hand side of the trunk.
- Press and hold the reset button for 10 seconds.
- Release the reset button and close the trunk.
- Press and hold the unlock button on your key fob for 10 seconds.
- Release the unlock button and press it again briefly. The key fob should now be resynced with your vehicle.
If this does not work, you may need to perform a hard reset of the key fob.
To do this, follow the same steps as above, but press and hold the unlock button on the key fob for 15 seconds instead of 10 seconds. This will reset the key fob and should fix any issues you are having.
Final Thoughts
A malfunctioning Tesla key fob can be frustrating, but there are several steps you can take to fix the problem.
First, check the battery and replace it if necessary.
Next, check the range and make sure the key fob is within range of the vehicle. Finally, try performing a hard reset by pressing the reset button in the trunk of the vehicle.
By following these steps, you should be able to get your key fob working again and regain access to your Tesla.