2015 Ford F-350 Super Duty Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2015 Ford F-350 Super Duty supports on-board programming for its key fobs, meaning you can often program new fobs yourself without a trip to the dealership or locksmith. This procedure is for adding new remote functions; the integrated transponder chip that allows the vehicle to start still requires specialized equipment (see "If on-board programming isn't supported" below).

To program a new key fob:

1. Gather all existing programmed key fobs and the new (unprogrammed) key fob(s). You will need all of them to be programmed in one session.
2. Insert an existing programmed key into the ignition and turn the ignition from OFF to ON (without starting the engine) and then back to OFF eight (8) times within 10 seconds. The last position should be ON.
3. The doors will lock and unlock automatically, indicating the vehicle has entered programming mode.
4. Within 20 seconds, press any button on a previously programmed remote. The doors will lock and unlock, confirming that remote has been programmed.
5. Repeat step 4 for any additional previously programmed remotes.
6. Within 20 seconds, press any button on each new (unprogrammed) remote. The doors will lock and unlock after each successful programming.
7. To exit programming mode, turn the ignition to OFF or wait 20 seconds. The doors will lock and unlock again to confirm exit.
8. Test all key fobs to ensure they function correctly.

Battery replacement

Replacing the battery in your 2015 Ford F-350 Super Duty key fob is a straightforward process.

1. Locate the small release button or notch on the side of the key fob. Press the button or use a small flat-head screwdriver in the notch to separate the two halves of the fob case.
2. Carefully pry apart the case, typically starting from the key ring end.
3. Once open, you'll see the circuit board and the CR2032 coin cell battery.
4. Note the orientation of the battery (positive (+) side up or down) and gently pry it out with a small, non-metallic tool or your fingernail.
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 case and snap them back together until they are secure.
7. Test the key fob to ensure it's working.

Where to buy a replacement fob

• Ford Dealership: While you'll get genuine OEM parts and guaranteed compatibility, this is typically the most expensive option. Expect to pay $150-$300 for the fob itself, plus additional charges for cutting the key blade (if applicable) and programming the transponder/remote functions. The total cost can easily exceed $400.
• Automotive Locksmith: Locksmiths often offer a good balance of cost and service. They can supply OEM or high-quality aftermarket fobs, cut the key blade, and program both the remote functions and the immobilizer transponder. Prices for a fob, cut, and programming typically range from $100-$250, depending on the locksmith and the type of fob.
• Amazon/Online Retailers: You can find replacement fobs for significantly less online, often in the $20-$60 range. However, be cautious about quality and ensure the FCC ID and part numbers match your original fob exactly. You'll still need to factor in the cost of cutting the key blade and programming the transponder immobilizer chip. If you buy a separate key blank and a remote-only fob, you can do the remote programming yourself, but the key still needs to be cut and the transponder programmed by a professional.

When purchasing online, confirm the FCC ID CWTWB1U793 or CWTWB1U806 and OEM part numbers 164-R8046 or 164-R8070 for compatibility with your 2015 F-350 Super Duty.

If on-board programming isn't supported

While the remote functions of your 2015 Ford F-350 Super Duty can be programmed via the on-board method described above, the integrated transponder chip within the key fob, which is essential for starting your vehicle, cannot be programmed this way. The vehicle's immobilizer system requires a specific chip to be recognized, preventing theft.

Therefore, even if you successfully program the remote functions, the vehicle will not start unless the transponder chip is also programmed. This requires specialized diagnostic equipment typically owned by Ford dealerships or automotive locksmiths.

For a new key fob with an integrated key blade and transponder, the full cost including the fob, key cutting, and transponder/remote programming at a dealership or locksmith will likely be in the $150-$400+ range. Do not attempt to program the transponder yourself without the proper tools, as incorrect programming can lead to bigger problems with your vehicle's immobilizer system.

Find a mobile locksmith or shop on Repairius.