2023 Toyota Highlander Key Fob Programming

Quick reference

Step-by-step on-board programming

Unfortunately, the 2023 Toyota Highlander does not support on-board, DIY key fob programming. Programming a new key fob requires a specialized scan tool and software that is typically only available to Toyota dealerships and licensed automotive locksmiths. This is because the key fob is part of the vehicle's immobilizer system, which prevents the engine from starting without a recognized transponder chip. The programming process involves registering the new key fob with the vehicle's computer, a security measure that cannot be bypassed with simple on-off cycles of the ignition.

Battery replacement

Replacing the battery in your 2023 Toyota Highlander key fob is a simple process you can do at home.

1. First, release the mechanical key from the bottom of the fob.
2. Insert the key into the slot on the side of the fob and gently twist to separate the two halves of the casing.
3. Inside, you will find the green circuit board. The CR2032 battery is on the backside of the board.
4. Carefully remove the old battery and insert the new one, making sure the positive (+) side is facing up.
5. Snap the two halves of the fob back together and re-insert the mechanical key.

Where to buy a replacement fob

• Toyota Dealership: This is the most expensive option, with fobs often costing $300-$500, plus another $100-$200 for programming. However, you are guaranteed an OEM part and a successful programming.
• Automotive Locksmith: A locksmith can typically provide and program a new fob for a total cost of $200-$400. They often have access to both OEM and high-quality aftermarket fobs.
• Online Retailers (Amazon, eBay): You can find aftermarket fobs for as little as $50-$100 online. However, you will still need to have the fob programmed by a locksmith or dealer, and there is a risk of receiving a low-quality or incorrect part.

If on-board programming isn't supported

As mentioned, the 2023 Highlander requires professional programming. This is due to the sophisticated immobilizer system that Toyota uses to protect its vehicles from theft. The transponder chip in the key fob must be wirelessly registered with the car's computer, and this process can only be initiated with a diagnostic scan tool that has the appropriate software. When you have a new key programmed, the technician will also need to cut the mechanical key blade that is stored inside the fob. This is a laser-cut key that requires a special machine to duplicate. The cost for cutting and programming will vary, but you can generally expect to pay between $100 and $250 for this service from a locksmith or dealer.

Find a mobile locksmith or shop on Repairius.