2025 Jeep Gladiator Key Fob Programming Guide

Losing a key fob for your 2025 Jeep Gladiator—or just needing a spare for weekend adventures—can be a frustrating and confusing experience. As an ASE-certified electrical technician and locksmith, I get asked all the time if there is a "secret sequence" to program these modern Jeep proximity keys yourself.

Because the 2025 Gladiator uses advanced push-to-start technology and Chrysler's stringent onboard security systems, the short answer is that DIY programming without specialized equipment is a thing of the past. Below is the ultimate guide to understanding your 2025 Jeep Gladiator key fob, replacing its battery, and navigating the replacement process.

Quick reference

Step-by-step on-board programming

If you are looking for a simple sequence of turning the ignition on and off, pressing brake pedals, or holding lock/unlock buttons to program a new key—I have to stop you right there. The 2025 Jeep Gladiator does not support DIY on-board key fob programming.

Since 2018, all Jeep, Dodge, Ram, and Chrysler vehicles have been equipped with a Security Gateway Module (SGW) and utilize AES (Advanced Encryption Standard) rolling-code immobilizers. This means that to introduce a new key to the vehicle's RF Hub, the programmer must bypass or authenticate through the vehicle's firewall.

Here is what a dealer or automotive locksmith must do to program your fob:

1. Access the Security Gateway: The technician must either use an authorized AutoAuth account with their scan tool or physically connect an SGW bypass cable behind the radio or OBD port.
2. Read the PIN Code: Using the advanced scan tool, the technician extracts the 4-digit immobilizer PIN code from the vehicle's computer.
3. Program the Key: The scan tool is used to pair the new fob's RFID chip to the vehicle's RF Hub module.
4. Test the Proximity Functions: The technician verifies that push-to-start, remote start (if equipped), and lock/unlock features function properly.

Battery replacement

While you can't program the fob yourself, changing a dead battery is incredibly simple and requires no special tools. The 2025 Jeep Gladiator fob uses a heavy-duty CR2450 battery.

1. Remove the emergency key: Press the small silver release button on the back/side of the fob and pull the emergency key blade out of the bottom.
2. Pry the shell open: Look at the slot where the emergency key was resting. You will see a small notch near the edge. Insert a flathead screwdriver (or the tip of the emergency key itself) into this notch and gently twist to pop the back cover off.
3. Remove the old battery: Note the orientation of the battery (the positive "+" side should be facing up). Gently pop the old CR2450 battery out.
4. Insert the new battery: Place the new CR2450 battery in the slot, ensuring the "+" side is facing you.
5. Reassemble: Snap the back cover into place, ensuring it is seated tightly all the way around to maintain its water resistance. Reinsert the emergency key blade.

Where to buy a replacement fob

When securing a new key for your Gladiator, you have three primary routes.

• The Dealership:
  • Pros: Guaranteed OEM quality; fob is perfectly matched to your VIN.
  • Cons: Highly expensive. An OEM fob plus dealer labor for cutting and programming will easily run between $300 and $450.
• Automotive Locksmith:
  • Pros: More affordable than the dealer. Mobile locksmiths can come straight to your driveway. They can supply high-quality aftermarket or refurbished OEM fobs.
  • Cons: You need to ensure they have the proper modern Chrysler SGW bypass tools. Expect to pay $200 to $300 total for the key, cut, and programming.
• Amazon / Online Retailers:
  • Pros: Lowest upfront cost for the part (usually $50–$100 for an aftermarket proximity key).
  • Cons: Quality can be hit-or-miss. Many locksmiths will refuse to program customer-supplied keys because cheap internal circuitry often fails during the pairing process. You will still have to pay a professional $100+ for the cut and programming labor.

If on-board programming isn't supported

As established, you cannot program this key at home. The Gladiator relies on a Hitag Pro / AES immobilizer transponder. This system requires not just the OBD2 programming mentioned above, but the physical emergency blade must also be laser-cut (high-security keyway) to match your door locks. This is crucial if your battery ever dies and you need to physically unlock the driver's side door to enter the cabin.

If you purchase a fob online, expect to pay a local locksmith around $100 to $150 strictly for the cutting and programming service. Always confirm with the locksmith beforehand that they can handle 2024+ Chrysler SGW systems before you book the appointment.

Find a mobile locksmith or shop on Repairius.