2024 Toyota Highlander Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2024 Toyota Highlander utilizes a sophisticated smart key system that does not support DIY on-board programming. Programming a new smart key requires specialized diagnostic equipment connected to the vehicle's OBD-II port. This process reprograms the vehicle's immobilizer system to recognize the new key's unique encryption.

This means that to program a new key for your 2024 Toyota Highlander, you will need to visit a Toyota dealership or contact a professional automotive locksmith with the necessary scan tools and software.

Battery replacement

1. Locate the small release button or switch on the side of your smart key fob. Press or slide it to release the emergency key blade. Pull the emergency key blade out.
2. With the emergency key removed, you will see a small slot or indentation within the fob casing. Gently pry the two halves of the fob apart using a small, flat-head screwdriver or a plastic prying tool in this slot. Be careful not to damage the internal components.
3. Once the fob is open, carefully remove the old CR2032 battery. Note the orientation of the battery (usually positive side up).
4. Insert a new CR2032 battery, ensuring it is correctly oriented.
5. Align the two halves of the smart key fob and press them together until they snap securely into place.
6. Reinsert the emergency key blade into the fob until it clicks.

Where to buy a replacement fob

• Toyota Dealership:

  • Pros: Guaranteed genuine OEM part, professional programming, warranty. They will have the correct key blade to cut for your vehicle.
  • Cons: Most expensive option. Expect to pay anywhere from $300 to $500 or more for the fob and programming.

• Automotive Locksmith:

  • Pros: Often more affordable than a dealership, offers mobile service, can program both OEM and aftermarket fobs. They can also cut the emergency key blade on-site.
  • Cons: Prices can vary. Ensure the locksmith has the correct diagnostic equipment for 2024 Toyota models.
  • Cost Expectation: Typically $200 to $400, depending on the fob type (OEM vs. aftermarket) and programming complexity.

• Online Retailers (e.g., Amazon, eBay):

  • Pros: Potentially the cheapest option for the fob itself. You can find both OEM and aftermarket options.
  • Cons: You still need to pay for programming and key blade cutting separately, as they cannot be programmed DIY. There's also a risk of purchasing an incompatible or counterfeit fob. Verify the FCC ID (HYQ14FBE) and part number (8990H-0E040) carefully.
  • Cost Expectation: Fob alone can be $50 to $150, plus programming and cutting fees from a locksmith or dealer.

If on-board programming isn't supported

As mentioned, the 2024 Toyota Highlander requires specialized equipment for smart key programming due to its advanced immobilizer system. This means you cannot program an additional key fob yourself using a sequence of key turns or door open/close cycles.

Immobilizer Transponder: The 2024 Toyota Highlander uses a sophisticated encrypted immobilizer transponder system integrated into the smart key fob. This system communicates wirelessly with the vehicle's engine control unit (ECU). If the correct transponder signal is not detected, the vehicle will not start, even if the emergency key blade physically unlocks the door. This is a security measure to prevent theft.

Cost Expectations: When you factor in the cost of the smart key fob itself, the specialized programming labor, and the cutting of the emergency key blade, you should anticipate the following:

• Dealership: Upper end of the range, likely $300-$500+.
• Automotive Locksmith: Mid-range, typically $200-$400, offering a good balance of cost and convenience.

Always confirm the total cost with your chosen service provider before proceeding.

Find a mobile locksmith or shop on Repairius.