2015 Jeep Grand Cherokee Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2015 Jeep Grand Cherokee does not support DIY on-board programming for its key fobs. The vehicle's security system requires a specialized diagnostic scan tool to program new key fobs. This means you will need to visit a dealership or a certified automotive locksmith to get a new fob programmed.

Here's why and what to expect:

1. Security System Sophistication: Modern vehicles like the 2015 Jeep Grand Cherokee have advanced immobilizer systems designed to prevent theft. These systems require a secure connection to the vehicle's computer (BCM - Body Control Module) to add new keys. Generic methods like turning the ignition on/off multiple times are no longer effective.
2. Specialized Tools: Dealerships and locksmiths use professional-grade diagnostic equipment (e.g., wiTECH for Chrysler/Jeep/Dodge) that can communicate with the vehicle's immobilizer system. This tool performs a "PIN code" authorization process, which is necessary to register a new key fob.
3. PIN Code: Vehicles typically have a unique security PIN code. This code is often required by the diagnostic tool to access the immobilizer system for programming. Dealerships can access this through their manufacturer databases, while locksmiths often use specialized tools to read the PIN directly from the vehicle's computer.

Battery replacement

Replacing the battery in your 2015 Jeep Grand Cherokee key fob is a straightforward process:

1. Remove the Emergency Key: Locate the small button on the side of the fob. Press it and pull out the emergency key blade.
2. Pry Open the Fob: With the emergency key removed, you'll see a small slot. Use a flat-head screwdriver or a coin to carefully pry open the two halves of the key fob. Be gentle to avoid damaging the internal components.
3. Remove Old Battery: Note the orientation of the CR2032 battery (usually positive side up). Gently pry out the old battery.
4. Insert New Battery: Place the new CR2032 battery into the circuit board, ensuring the positive (+) side faces the same direction as the old battery.
5. Reassemble: Carefully align the two halves of the key fob and press them firmly together until they click. Reinsert the emergency key.

Where to buy a replacement fob

When it comes to purchasing a replacement key fob for your 2015 Jeep Grand Cherokee, you have a few options, each with its own pros and cons:

• Dealership:

  • Pros: Guaranteed genuine OEM part, often comes with programming included in the price. They have direct access to manufacturer information and tools.
  • Cons: Most expensive option. Expect to pay anywhere from $250 to $400+ for the fob and programming.

• Automotive Locksmith:

  • Pros: More affordable than the dealership, often by 20-50%. Many locksmiths offer mobile services, coming to your location. They have specialized tools and expertise for programming a wide range of vehicles.
  • Cons: Quality of aftermarket fobs can vary. Ensure the locksmith provides a warranty on their parts and labor. Prices generally range from $150 to $300 for the fob and programming.

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

  • Pros: Cheapest option for the physical fob itself. You can find OEM or aftermarket fobs for as low as $30-$100.
  • Cons: You're only buying the unprogrammed fob. You'll still need to pay extra for programming by a locksmith or dealership. There's also a risk of purchasing a counterfeit or incompatible fob. Always verify the FCC ID and part number before buying.

If on-board programming isn't supported

As established, the 2015 Jeep Grand Cherokee requires professional programming. Here's what that entails regarding cost and the immobilizer transponder:

• Cost Expectations: As mentioned above, expect to pay $150-$400+ total for a new key fob and programming, depending on whether you go to a locksmith or a dealership, and whether you provide your own fob or purchase one through them. Mobile locksmiths might charge a service call fee, but it's usually offset by their lower overall price compared to dealerships.
• Immobilizer Transponder: The 2015 Jeep Grand Cherokee utilizes a sophisticated immobilizer system with a built-in transponder chip within the key fob. This chip contains a unique electronic code that the vehicle's computer must recognize before the engine will start. When a new key fob is programmed, this transponder chip's data is registered with the vehicle's immobilizer system, allowing it to authorize starting. Without proper programming, even if the key blade is cut correctly, the vehicle will not start due to the immobilizer security feature.

Find a mobile locksmith or shop on Repairius.