2019 Ram 2500 Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2019 Ram 2500 does not support DIY on-board programming for its key fobs. This means you cannot simply use a series of ignition cycles or button presses to program a new key fob yourself.

The sophisticated security systems in modern vehicles like your Ram 2500 require specialized diagnostic equipment (a "scan tool") to communicate with the vehicle's computer and program new key fobs. This process typically involves accessing the vehicle's security module to register the new fob's unique code into the system, ensuring it can properly communicate with the engine immobilizer.

Therefore, you will need to seek assistance from a professional such as a locksmith or a Ram dealership to get your new key fob programmed.

Battery replacement

Replacing the battery in your 2019 Ram 2500 key fob is a straightforward process:

1. Locate the emergency key release: On the back or side of your key fob, there will be a small button or switch. Press or slide this to release the emergency key blade. Pull the key blade out.
2. Separate the fob casing: With the emergency key removed, you will see a small slot or indentation where the key was. Use a thin, flat tool (like a small flathead screwdriver or a pry tool) to carefully pry open the two halves of the key fob casing. Be gentle to avoid damaging the plastic.
3. Remove the old battery: Once the fob is open, you'll see the circuit board and the coin-cell battery. Note the orientation of the battery (which side is facing up). Gently pry out the old CR2450 battery.
4. Insert the new battery: Place the new CR2450 battery into the slot, ensuring the positive (+) side is facing the same direction as the old battery.
5. Reassemble the fob: Carefully snap the two halves of the key fob casing back together until it's securely closed. Reinsert the emergency key blade.
6. Test the fob: Test all the buttons on your key fob (lock, unlock, remote start, etc.) to ensure it's working correctly.

Where to buy a replacement fob

When considering where to purchase a replacement key fob for your 2019 Ram 2500, you have a few options, each with its pros and cons:

• Ram Dealership:

  • Pros: Guaranteed genuine OEM part, often comes with programming services included, expert knowledge of your specific vehicle.
  • Cons: Typically the most expensive option. Expect to pay anywhere from $250 to $400+ for the fob and programming.

• Independent Locksmith:

  • Pros: Often significantly cheaper than a dealership for both the fob and programming (typically $150 to $300 total). Many mobile locksmiths can come to your location, offering convenience. They often stock genuine OEM or high-quality aftermarket fobs that are compatible with your vehicle.
  • Cons: Quality of aftermarket fobs can vary, so ensure your locksmith guarantees their product.

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

  • Pros: Can be the cheapest option for the fob itself, sometimes as low as $30 to $100. Wide selection of OEM and aftermarket options.
  • Cons: You still need to pay for programming from a locksmith or dealer, which adds to the overall cost. There's a higher risk of purchasing counterfeit or incompatible fobs, which can lead to wasted money and frustration. Verify the FCC ID (OHT1130261) and part numbers carefully before buying.

If on-board programming isn't supported

As mentioned, your 2019 Ram 2500 requires a professional with a scan tool to program new key fobs. Here's what you should expect:

• Cost Expectations: The total cost for a new key fob and programming from a locksmith will generally be between $150 and $300. A dealership will likely charge more, ranging from $250 to $400+. This price usually includes the physical fob, the programming service, and potentially cutting a new emergency key blade.

• Immobilizer Transponder: Your Ram 2500 uses an advanced immobilizer system. The key fob contains a transponder chip (part of the overall circuit board) that communicates with the vehicle's immobilizer to allow the engine to start. When a new key fob is programmed, the transponder's unique code is registered with the vehicle's Body Control Module (BCM). If the transponder isn't correctly programmed or isn't present, the vehicle's immobilizer will prevent the engine from starting, even if the remote functions (lock/unlock) work.

• Key Blade Cutting: If your new key fob comes with an uncut emergency key blade, it will need to be cut to match your existing key. This is a separate service usually offered by locksmiths or dealerships and is crucial for manually unlocking your doors or starting the vehicle if the fob battery dies.

Find a mobile locksmith or shop on Repairius.