What to do if you lost your Lexus car key?

Losing your Lexus car key can be a frustrating and stressful experience, but there are steps you can take to resolve the issue. The first and most important thing to do is to contact your local Lexus dealership or a qualified automotive locksmith as soon as possible.

Contacting Your Lexus Dealership

Your Lexus dealership is the best place to start when you've lost your car key. They have the necessary equipment and expertise to create a new key for your vehicle. Here's what you can expect when you contact them:

• They will ask for your vehicle identification number (VIN) to verify ownership and access your vehicle's information.


• They may need to tow your car to the dealership if you don't have a spare key.


• They will program a new key to your vehicle's security system, ensuring it works properly.


• The cost of a new Lexus key can range from $200 to $500, depending on the model and year of your vehicle.

It's important to note that the dealership may require proof of ownership, such as your vehicle registration or driver's license, before they can create a new key for you.

Contacting a Qualified Automotive Locksmith

If you don't want to go through your Lexus dealership, you can also contact a qualified automotive locksmith. They may be able to provide a more cost-effective solution, but it's important to ensure they have the necessary expertise and equipment to work on your Lexus vehicle.

• Locksmiths can often create a new key on-site, without the need to tow your vehicle.


• The cost of a new Lexus key from a locksmith can range from $150 to $300, depending on the complexity of the key and the locksmith's expertise.


• Make sure to choose a reputable and licensed locksmith who has experience working on Lexus vehicles.

Regardless of whether you choose to work with your Lexus dealership or a qualified locksmith, it's important to act quickly to minimize the inconvenience and potential security risks associated with a lost car key.

Can I drive my Lexus without the key fob?

You can drive a Lexus without a key fob if the engine is already running, but you will not be able to restart it after turning it off. For newer models, you can use the Lexus Digital Key on your smartphone as a substitute for a physical key fob. 
This video demonstrates how to start your Lexus with a dead key fob battery: 46sNorthside LexusYouTube · May 6, 2025
If the engine is already running

• You can drive as long as the engine stays on. 
• The car will provide warnings, like beeping sounds and dashboard notifications, once it detects the key is no longer nearby. 
• The vehicle cannot be restarted once you turn the engine off. 

For newer Lexus models with Digital Key

• You can use your smartphone as a key if you have the Lexus app and a compatible model.
• You must have the Digital Key feature enabled, which requires a compatible smartphone with Bluetooth, the Lexus app installed, and an active Remote Connect subscription.
• Your phone will automatically unlock the car and allow you to start it, acting as a replacement for a physical key. 

If you have a dead key fob battery

• You can still start the car by holding the fob directly against the push-button start. 
• The mechanical key inside the fob can be used to unlock the driver's door if the car is locked. 
• You should replace the battery to avoid getting stranded. 

If you have lost your keys

• You will need to get a replacement from a Lexus dealership.
• They will need your proof of ownership and the vehicle's VIN to provide you with a new key. 

What to do if you lose your Lexus key?

If you lose your Lexus key, you should contact a Lexus dealership for a replacement, as they can cut and program a new key for your specific vehicle. You will need to provide proof of ownership, a valid photo ID, and your Vehicle Identification Number (VIN). Alternatively, a qualified locksmith can also replace and program keys, especially for older or simpler models, but advanced smart keys will likely require a dealership. 
You can watch this video to learn how to program a replacement key for a Lexus: 1mTom's Key CompanyYouTube · Mar 5, 2022
What to do

1. Gather necessary information: Find your Vehicle Identification Number (VIN), which is often on the driver's side dashboard or in your vehicle's registration documents. 
2. Contact a Lexus dealership: Call the parts department to order a new key. They will require your VIN and proof of ownership to verify you are the owner. 
3. Consider a locksmith: For older or basic keys, a locksmith may be able to create a replacement on the spot. For modern smart keys, a locksmith can often help with programming and cutting, but a dealership is the most reliable option. 
4. Be prepared to provide documentation: Have a valid photo ID and proof of ownership ready for the dealership or locksmith. 
5. Know the costs: The price varies depending on your key's complexity. A basic key is inexpensive, but a smart key fob replacement can cost several hundred dollars. 
6. Request key reprogramming: When you get the new key, ask the dealer to disable the old key so it can no longer start your car. 

Things to keep in mind

• Lexus keys have an immobilizer chip that must be programmed to your vehicle's computer to start the engine. 
• While some third-party companies and locksmiths can perform this service, a dealership is the most reliable source for a replacement key, especially for newer models. 
• Consider purchasing a Lexus Key Replacement Protection plan for future peace of mind. 

Can Lexus keys be tracked?

If you lose your 2025 Lexus RX350 key, it cannot be tracked via GPS. To replace it, contact a Lexus dealer with your vehicle identification number (VIN). They will program a new smart key fob to your car's immobilizer system. Ensure your spare keys are kept safe and regularly check key fob batteries to avoid lockout.

How much does it cost to replace a Lexus key?

Lexus Key Fob Replacement Costs
Depending on the model and make, brand-new replacement key fobs can cost you $200 or more.