2024 Kenworth T680 Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2024 Kenworth T680 does not support DIY on-board key fob programming. The keyless entry system on these vehicles requires specialized diagnostic equipment to program new or replacement key fobs. This procedure must be performed by a certified Kenworth dealership or a qualified automotive locksmith with the necessary scan tools.

The programming process typically involves connecting a diagnostic tool to the truck's OBD-II port, accessing the security system module, and then following a series of prompts to register the new key fob with the vehicle's computer. Attempting to program the fob yourself without the proper equipment will be unsuccessful and could potentially lead to issues with the vehicle's security system.

Battery replacement

1. Locate the small notch or slot on the side of the key fob casing.
2. Insert a small, flat-head screwdriver or a coin into the notch.
3. Gently twist the screwdriver or coin to pry open the two halves of the fob.
4. Carefully remove the old CR2032 battery, noting its orientation (positive side typically facing up).
5. Insert the new CR2032 battery with the positive (+) side facing the same direction as the old one.
6. Align the two halves of the key fob and press them firmly together until they click securely into place.
7. Test the key fob functions (lock, unlock, panic) to ensure it's working correctly.

Where to buy a replacement fob

• Kenworth Dealership: This is the most straightforward option for obtaining an OEM replacement fob, ensuring full compatibility and often coming with a warranty. However, it's typically the most expensive, with fobs alone often ranging from $150 to $300, plus separate programming and cutting fees.
• Automotive Locksmith: A qualified automotive locksmith can often provide and program OEM or high-quality aftermarket fobs for less than a dealership. They can usually cut the key blade and program the fob and transponder on-site, offering a more convenient and cost-effective solution. Expect to pay anywhere from $100 to $250 for the fob, cutting, and programming.
• Online Retailers (e.g., Amazon, eBay): You can often find aftermarket fobs for significantly less online, sometimes as low as $30-$80. Be cautious, though, as quality can vary, and some generic fobs may not be fully compatible or durable. You'll still need to factor in the cost of professional programming and key cutting, as these fobs rarely come pre-programmed or cut.

If on-board programming isn't supported

Since on-board programming is not supported for the 2024 Kenworth T680, you must rely on professional services for key fob programming. As mentioned, a Kenworth dealership or a specialized automotive locksmith will have the necessary diagnostic tools to complete the process.

Cost Expectations:

• Dealership: For a new fob, cutting, and programming, you could be looking at a total cost ranging from $250 to $500 or more.
• Automotive Locksmith: A locksmith generally offers a more competitive price, with total costs for a new fob, cutting, and programming typically falling between $150 and $350.

Immobilizer Transponder: The 2024 Kenworth T680 utilizes an immobilizer system that requires a transponder chip embedded within the key fob to be correctly programmed to the vehicle. This transponder communicates with the truck's immobilizer, allowing the engine to start. If the transponder is not programmed correctly, the truck will not start, even if the key blade is cut properly and the remote functions work. Both dealerships and locksmiths have the equipment to program the transponder alongside the remote functions.

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