2021 International MV Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2021 International MV does not support DIY key fob programming. The process requires specialized diagnostic equipment and software typically found at an authorized International dealership or a commercial vehicle locksmith.

The key fobs for these commercial vehicles are more integrated into the vehicle's complex electronic control system. Programming involves linking the new fob directly with the vehicle's Body Control Module (BCM) and Engine Control Module (ECM) to ensure proper communication and security. This often includes updating the vehicle's software to recognize the new device.

Battery replacement

To replace the battery in your 2021 International MV key fob:

1. Locate the small notch or opening on the side of the key fob casing.
2. Carefully insert a small flat-head screwdriver or a coin into the notch.
3. Gently pry the two halves of the fob apart.
4. Note the orientation of the existing battery. Remove the old battery.
5. Insert the new battery, ensuring it is correctly oriented (positive side up).
6. Snap the two halves of the key fob back together until you hear a click.

Always refer to your owner's manual or inspect the current battery within the fob for the exact battery type, as it can vary. Common battery types for commercial vehicle fobs include CR2032 or CR2025.

Where to buy a replacement fob

• International Dealership: This is the most reliable option for obtaining an original equipment manufacturer (OEM) key fob. They will have the correct part and the necessary equipment for programming. However, it is typically the most expensive option, often ranging from $200-$400 for the fob and programming.

• Commercial Vehicle Locksmith: A specialized commercial vehicle locksmith can often source OEM or high-quality aftermarket fobs. They possess the diagnostic tools required for programming and can offer a more competitive price than a dealership, usually between $150-$350, depending on the fob and complexity of programming.

• Online Retailers (e.g., Amazon, eBay): While you might find seemingly compatible fobs online at a lower cost, exercise extreme caution. Many online fobs for commercial vehicles are not genuine or may not be programmable to your specific truck's system. Always verify the FCC ID and part number with your existing fob or dealership before purchasing. Even if you find a compatible fob, you will still need a locksmith or dealer for programming, adding to the overall cost and potential complications.

If on-board programming isn't supported

As mentioned, on-board programming is not an option for the 2021 International MV. You will need to rely on professional services:

• Cost Expectations: Expect to pay for both the replacement key fob and the programming service. Dealerships or locksmiths typically charge an hourly rate for programming, in addition to the cost of the fob itself.
• Immobilizer Transponder: The 2021 International MV uses an advanced immobilizer system. This system requires the key fob (which contains a transponder chip) to be electronically linked to the vehicle's immobilizer to allow the engine to start. Without proper programming, even a correctly cut key blade will not start the truck. When a new key or fob is programmed, the transponder code is registered with the vehicle's immobilizer module, ensuring only authorized keys can operate the vehicle.

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