2018 Ram ProMaster Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2018 Ram ProMaster does NOT support DIY on-board programming for its key fobs. This means you cannot program a new key fob yourself using a sequence of actions like turning the ignition on and off repeatedly.

For a 2018 Ram ProMaster, programming a new key fob requires specialized diagnostic equipment. This type of programming is usually performed by:

• A certified automotive locksmith: They have the necessary tools and expertise to program the fob to your vehicle's immobilizer system.
• A Ram dealership service center: Dealerships also have the proprietary diagnostic equipment required.

This is because the key fob for your ProMaster isn't just a remote for locking and unlocking the doors; it also contains a transponder chip that is crucial for the vehicle's immobilizer system. This chip communicates with your ProMaster's computer, allowing the engine to start. Without proper programming, the vehicle's anti-theft system will prevent it from starting, even if the key blade is cut correctly.

Battery replacement

Replacing the battery in your 2018 Ram ProMaster key fob is a straightforward process:

1. Retrieve the emergency key: Slide the small release button on the side of the fob and pull out the emergency key blade.
2. Pry open the case: Use a small, flat-head screwdriver or a coin in the notch where the emergency key was. Gently pry apart the two halves of the key fob casing.
3. Remove the old battery: Carefully note the orientation of the battery (usually positive side up) and remove the old CR2032 battery.
4. Insert the new battery: Place a new CR2032 battery into the compartment, ensuring it's oriented correctly.
5. Reassemble the fob: Align the two halves of the key fob case and press them firmly together until they click securely into place. Reinsert the emergency key blade.

Where to buy a replacement fob

When considering where to purchase a replacement key fob for your 2018 Ram ProMaster, you have a few options, each with pros and cons:

• Ram Dealership:

  • Pros: Guaranteed genuine OEM part, often includes programming services (though at a cost).
  • Cons: Most expensive option. Expect to pay anywhere from $250 to $400 or more for the fob and programming.

• Automotive Locksmith:

  • Pros: Can often provide and program new aftermarket or OEM-compatible fobs for less than a dealership. Many can come to your location. Knowledgeable about various vehicle systems.
  • Cons: Prices can vary, so it's wise to get a few quotes. Ensure they have experience with Ram ProMaster immobilizer systems. Cost generally ranges from $150 to $300, including the fob and programming.

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

  • Pros: Potentially the cheapest way to buy the physical fob itself. You can find both genuine OEM and aftermarket options.
  • Cons: You still need to pay for programming separately. You risk buying a non-compatible or counterfeit fob. The cost of just the fob can be $40-$100, but remember to factor in the programming cost from a locksmith or dealer.

If on-board programming isn't supported

As established, on-board programming isn't an option for your 2018 Ram ProMaster. This means you will need professional assistance to get your new key fob programmed. The key reason for this is the immobilizer transponder. This tiny chip inside the key fob communicates with your vehicle's engine control unit (ECU). If the transponder signal doesn't match what the ECU expects, the vehicle's security system will prevent it from starting, even if the key blade is correctly cut and turns in the ignition.

Cost Expectations:

When budgeting for a new key fob, consider two main components:

1. The Fob Itself: As mentioned above, costs range from $40 (aftermarket online) to $200+ (OEM from a dealer).
2. Programming Services: This is typically where the significant cost comes in. A locksmith or dealership will charge for their time and use of specialized diagnostic equipment. Programming fees can range from $50 to $150 or more, depending on your location and the complexity of the service.

Key Cutting: Don't forget the physical key blade! If you purchase a new fob, you will likely receive it with a blank key blade. This blade will need to be cut to match your existing key by a locksmith or hardware store with the appropriate cutting equipment. This usually incurs an additional small fee (e.g., $5-$20).

Find a mobile locksmith or shop on Repairius.