2015 Subaru Forester Key Fob Programming

Quick reference

Step-by-step on-board programming

Unfortunately, the 2015 Subaru Forester does not have an on-board programming procedure for new key fobs. This means you cannot program a new key fob yourself using a series of key turns or button presses. Programming requires specialized diagnostic software that communicates with the vehicle's immobilizer system. This is a security measure to prevent unauthorized access to the vehicle.

To have a new key fob programmed, you will need to contact a dealership or an automotive locksmith. They have the necessary scan tools and software to access the vehicle's computer and program the new fob.

Battery replacement

Replacing the battery in your 2015 Subaru Forester key fob is a simple task you can do yourself.

1. Open the case: Look for a small slot or indentation on the side of the key fob. Use a small flathead screwdriver or a coin to gently pry the two halves of the fob apart.
2. Remove the old battery: Note the orientation of the old CR2032 battery before removing it. The positive (+) side is usually facing up.
3. Insert the new battery: Slide the new CR2032 battery into place, making sure the positive (+) side is facing the correct way.
4. Snap the case together: Align the two halves of the key fob and press them firmly together until they click into place.

Where to buy a replacement fob

• Dealership: This is the most expensive option, but you are guaranteed to get a genuine OEM key fob that is compatible with your vehicle. Expect to pay between $200 and $400 for the fob and programming.
• Automotive Locksmith: A locksmith can often provide a new key fob and program it for less than the dealership. They may offer OEM or high-quality aftermarket fobs. Costs can range from $150 to $300.
• Amazon/Online Retailers: You can find a wide variety of aftermarket key fobs online for as little as $20 to $50. However, the quality can be inconsistent, and you will still need to have the fob programmed by a locksmith or dealer. Be aware that some online sellers may provide fobs that are not compatible with your vehicle, so be sure to match the FCC ID and part number.

If on-board programming isn't supported

As mentioned, the 2015 Subaru Forester requires a professional with a scan tool to program new key fobs. This is because the key fob contains a transponder chip that is part of the vehicle's immobilizer system. The transponder chip must be electronically paired with the vehicle's computer to allow the engine to start. This prevents theft by ensuring that only a key with a correctly programmed transponder can be used to operate the vehicle. When a new key is programmed, the scan tool adds its unique transponder ID to the vehicle's immobilizer memory.

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