2018 Jeep Cherokee Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2018 Jeep Cherokee does not support DIY on-board key fob programming. This means you cannot program a new key fob yourself using a series of ignition cycles or button presses. Modern vehicles like the 2018 Jeep Cherokee utilize more sophisticated security systems that require specialized diagnostic equipment to program new key fobs.

To program a new key fob for your 2018 Jeep Cherokee, you will need to visit a Jeep dealership or a qualified automotive locksmith. They have the necessary scan tools and software to communicate with your vehicle's onboard computer and pair the new key fob to your ignition system.

Battery replacement

Replacing the battery in your 2018 Jeep Cherokee key fob is a straightforward process:

1. Locate the small release button or switch on the side of the key fob. Press it to release the emergency key blade.
2. With the emergency key removed, you will see a small slot or indentation. Use a thin, flat-head screwdriver or a coin to gently pry open the two halves of the key fob casing.
3. Carefully separate the casing to reveal the circuit board and the battery.
4. Note the orientation of the old battery (CR2032), then gently pry it out.
5. Insert the new CR2032 battery with the positive (+) side facing up.
6. Align the two halves of the key fob casing and press them firmly together until they snap shut.
7. Reinsert the emergency key blade.

Where to buy a replacement fob

When it comes to purchasing a replacement key fob for your 2018 Jeep Cherokee, you have a few options, each with its own pros and cons:

• Jeep Dealership:
  • Pros: Guaranteed genuine OEM part, expert programming, and support.
  • Cons: Most expensive option, often costing $300-$500 or more for the part and programming.
• Automotive Locksmith:
  • Pros: Often more affordable than a dealership (typically $200-$400), can come to your location (mobile locksmith), and generally quicker service. They can usually provide and program both OEM and high-quality aftermarket fobs.
  • Cons: Not all locksmiths are equipped to handle every make and model, so verify their capabilities beforehand.
• Online Retailers (e.g., Amazon, eBay):
  • Pros: Potentially the cheapest option for the fob itself (sometimes under $100). Good for finding aftermarket options.
  • Cons: You still need to pay a locksmith or dealer to program it, adding to the overall cost. There's also a risk of purchasing an incompatible or low-quality aftermarket fob, so ensure the FCC ID and part numbers match your existing fob.

If on-board programming isn't supported

As mentioned, your 2018 Jeep Cherokee requires professional programming. This is due to the advanced security features and the immobilizer system. The key fob contains a transponder chip which communicates with the vehicle's immobilizer to allow the engine to start. Without proper programming, the vehicle's immobilizer will not recognize the new key fob, and the engine will not start, even if the mechanical key fits the ignition.

Cost Expectations:

Expect to pay for both the key fob itself and the programming service. As detailed above, a dealership will typically charge more than an independent automotive locksmith. Always get a quote before proceeding. Mobile locksmiths can often save you money by coming to your location, eliminating towing fees if all keys are lost.

Immobilizer Transponder:

The 2018 Jeep Cherokee uses a sophisticated immobilizer system where the key fob contains a unique transponder chip. This chip sends a coded signal to the vehicle's immobilizer module. If the code is not recognized, the fuel pump and ignition are disabled, preventing the engine from starting. This is a crucial anti-theft feature. Therefore, simply cutting a new key blade is not enough; the transponder chip in the fob must be correctly programmed to your vehicle.

Find a mobile locksmith or shop on Repairius.