2015 Ford Transit Key Fob Programming Guide

As an ASE-certified electrical technician and locksmith, I see countless commercial vehicles roll through the shop, and the 2015 Ford Transit is one of the most common. Whether you’re managing a fleet or driving a Transit for your own business, losing a key can bring your workday to a grinding halt.

Replacing and programming a key fob for the 2015 Ford Transit can be straightforward if you plan ahead, but it can quickly become an expensive headache if you lose all your working keys. Here is your comprehensive guide to getting a new key fob programmed for your 2015 Transit.

Quick reference

Step-by-step on-board programming

Ford utilizes a robust anti-theft system (PATS). For the 2015 Ford Transit, you can program a third key yourself only if you already have two programmed, working keys. If you only have one key, or no keys at all, on-board programming is locked out, and you must use a diagnostic scan tool (see the section below).

If you have two working keys and want to program a third spare, follow these steps exactly:

1. Have keys ready: Gather your two original, working keys and your new, unprogrammed key (which must already have the metal blade laser-cut to match your locks).
2. Insert the first working key: Put the first original key into the ignition. Turn the ignition to the ON position (do not start the engine). Keep it in the ON position for at least 3 seconds, but no longer than 10 seconds.
3. Remove the first key: Turn the ignition OFF and remove the first key.
4. Insert the second working key: Within 10 seconds of removing the first key, insert your second original key and turn it to the ON position. Leave it ON for at least 3 seconds, but no longer than 10 seconds.
5. Remove the second key: Turn the ignition OFF and remove the second key.
6. Insert the new key: Within 10 seconds, insert the new, unprogrammed key into the ignition and turn it to the ON position.
7. Wait for programming to complete: Keep the new key in the ON position for at least 6 seconds. If successful, the immobilizer light on the dash will illuminate for 3 seconds and then turn off, and the door locks may cycle.
8. Test the key: Turn the ignition OFF, then try to start the van with the new key. Test the remote lock/unlock buttons as well.

Battery replacement

If your 2015 Ford Transit key fob suddenly stops locking or unlocking the doors, but still starts the van, you likely just need a new battery.

1. Locate the seam running along the side of the plastic key head.
2. Insert a small flathead screwdriver into the notch near the keyring loop.
3. Gently pry the two halves of the key shell apart.
4. Remove the old battery and insert a fresh CR2032 battery. Ensure the positive (+) side is facing up.
5. Snap the two halves of the key shell firmly back together.

Where to buy a replacement fob

When sourcing a new key for your Transit, you have three primary options:

• The Dealership: Going to a Ford dealer guarantees you get a genuine OEM part (164-R8126). However, this is the most expensive route. Expect to pay $150–$250 for the key itself, plus another $100+ for cutting and programming.
• Local Automotive Locksmith: Locksmiths often stock both OEM and high-quality aftermarket keys. They can laser-cut the HU101 blade and program the key on-site. Expect to pay between $150 and $200 total. The major pro here is convenience, as a mobile locksmith can come directly to your van.
• Amazon / Online Retailers: You can buy aftermarket fobs online for $20–$50. While this is incredibly cheap, the quality can be hit-or-miss. Furthermore, you will still need to pay a locksmith to laser-cut the blade and, if you don't have two working keys, program the immobilizer chip.

If on-board programming isn't supported

As mentioned earlier, if you only have one working key (or zero), the manual DIY programming steps will not work. The 2015 Ford Transit uses an 80-Bit Texas Crypto 4D63 transponder chip. To introduce a new key to the van's computer without two original keys, a professional must interface with the OBD-II port using an advanced diagnostic programmer.

Expect to pay a locksmith or dealer between $75 and $150 just for the programming service. If you are entirely locked out with zero working keys (an "All Keys Lost" situation), the locksmith will also need to decode your door lock to cut the new key, which will push the total cost into the $250–$350 range.

Don't wait until you lose your only key! Find a mobile locksmith or shop on Repairius.