2023 Jeep Grand Cherokee Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2023 Jeep Grand Cherokee does NOT support DIY on-board programming for its key fobs. Due to the advanced security systems, including the immobilizer, specialized diagnostic equipment is required to program new key fobs to your vehicle. This procedure typically involves connecting a scan tool to the vehicle's OBD-II port to communicate with the vehicle's computer and program the new fob.

Battery replacement

To replace the battery in your 2023 Jeep Grand Cherokee key fob, follow these general steps:

1. Locate the small release button or switch on the side or back of the key fob. Press or slide it to release the emergency key insert. Pull the emergency key out.
2. With the emergency key removed, you should see a slot or indentation within the fob casing. Use a small, flat-head screwdriver or a coin to carefully pry the two halves of the fob apart.
3. Once opened, you will see the circuit board and the battery. Note the orientation of the old battery before removing it. The battery type is a CR2450.
4. Carefully remove the old battery and insert the new CR2450 battery, ensuring the positive (+) side is facing the same direction as the old one.
5. Gently snap the two halves of the key fob back together until secure.
6. Reinsert the emergency key.

Test the fob's functionality with your vehicle to ensure the battery replacement was successful.

Where to buy a replacement fob

When considering where to purchase a replacement key fob for your 2023 Jeep Grand Cherokee, there are a few options, each with pros and cons:

• Chrysler/Jeep Dealership:

  • Pros: Guaranteed genuine OEM parts, expert programming (though often at a premium).
  • Cons: Most expensive option, often requires scheduling an appointment.
  • Ballpark Price: Expect to pay $350 - $600 or more for the fob and programming.

• Automotive Locksmith:

  • Pros: Often more affordable than the dealership, can come to your location (mobile locksmiths), can provide and program both OEM and high-quality aftermarket fobs, and can cut the emergency key blade on site.
  • Cons: Ensure the locksmith specializes in modern vehicle security and has the necessary programming equipment for a 2023 model.
  • Ballpark Price: Typically $250 - $450, depending on the fob type (OEM vs. aftermarket) and programming complexity.

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

  • Pros: Potentially the cheapest option for the fob itself.
  • Cons: You still need to find a locksmith or dealer to cut the emergency key and program the fob. There's a risk of purchasing an incompatible or counterfeit fob, and returns can be difficult.
  • Ballpark Price: Fobs can range from $80 - $200, but remember to factor in programming and key cutting costs, which will be separate.

If on-board programming isn't supported

As mentioned, the 2023 Jeep Grand Cherokee requires specialized equipment for key fob programming. This is primarily due to the integrated immobilizer system. The immobilizer is a security feature that prevents the car from starting if the correct, programmed key fob (which contains a transponder chip) is not detected.

When a new key fob is programmed, it's not just about the remote functions (lock, unlock, remote start). The transponder chip within the fob must be securely linked to your vehicle's immobilizer system. This requires a diagnostic tool that can access the vehicle's security protocols to add or remove key IDs.

Cost expectations: As detailed above, expect to pay a professional for this service. The cost will include the new key fob itself, the service of cutting the emergency blade, and the labor for programming the fob and its transponder to your vehicle's immobilizer system. Always request a full quote before proceeding.

Find a mobile locksmith or shop on Repairius.