2018 Subaru Forester Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2018 Subaru Forester does not support DIY on-board programming for its key fobs. This means you cannot program a new key fob yourself using a series of ignition cycles or button presses. The vehicle's immobilizer system requires a specialized diagnostic scan tool to link new key fobs to the car's computer.

This security measure is designed to prevent unauthorized key duplication and enhance vehicle security. Therefore, you will need to visit a Subaru dealership or a qualified automotive locksmith to program a new key fob.

Battery replacement

Replacing the CR2032 battery in your 2018 Subaru Forester key fob is a straightforward process:

1. Locate the small tab or slot on the side of the key fob case.
2. Use a small flathead screwdriver or a coin to carefully pry open the two halves of the key fob.
3. Gently remove the old CR2032 battery, noting its orientation (typically positive side up).
4. Insert the new CR2032 battery with the positive side facing the same direction.
5. Carefully align the two halves of the key fob and press them together until they click securely into place.

Where to buy a replacement fob

When considering where to purchase a replacement key fob for your 2018 Subaru Forester, you have several options, each with its pros and cons:

• Subaru Dealership:

  • Pros: Guaranteed genuine OEM part, expert technicians for programming.
  • Cons: Most expensive option, typically ranging from $200-$400 for the fob and programming.

• Automotive Locksmith:

  • Pros: Often more affordable than a dealership, can provide both OEM and quality aftermarket fobs, offers mobile services.
  • Cons: Prices can vary, ensure they have the necessary diagnostic tools for Subaru.
  • Ballpark Price: Expect to pay between $150-$300 for an aftermarket fob and programming, or slightly more for an OEM fob.

• Online Retailers (e.g., Amazon, eBay):

  • Pros: Most affordable for the fob itself, wide selection of aftermarket options.
  • Cons: You're only buying the physical fob; you'll still need to pay for programming separately. Risk of purchasing counterfeit or incompatible fobs.
  • Ballpark Price: Fobs can range from $30-$100, but remember to factor in programming costs.

If on-board programming isn't supported

As established, the 2018 Subaru Forester requires specialized equipment for key fob programming due to its advanced immobilizer system. This means that a trip to a dealership or an automotive locksmith is unavoidable to get a new fob working with your vehicle.

The cost for programming alone can range from $50 to $150, depending on the service provider and your location. This is in addition to the cost of the key fob itself. The 2018 Subaru Forester utilizes a transponder chip (often integrated into the key fob itself) that communicates with the vehicle's immobilizer system. This is why a simple "on-board" procedure isn't possible – the car needs to be taught to recognize the unique security code of the new transponder.

Find a mobile locksmith or shop on Repairius.