2015 Ram 3500 Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2015 Ram 3500 does not support DIY on-board programming for its key fobs. This means you cannot program a new key fob yourself using a series of ignition cycles or button presses. The vehicle's security system requires specialized diagnostic equipment to sync a new key fob with the vehicle's computer.

Battery replacement

Replacing the battery in your 2015 Ram 3500 key fob is a straightforward process:

1. Locate the small release button or switch on the side or bottom of the key fob. Press or slide it to release the emergency key blade.
2. With the emergency key blade removed, you should see a slot or notch. Use a small flathead screwdriver or coin to carefully pry apart the two halves of the key fob casing.
3. Once opened, you will see the circuit board and the CR2032 coin cell battery. Note the orientation of the battery (usually positive (+) side facing up).
4. Gently pry out the old battery and insert the new CR2032 battery with the correct orientation.
5. Snap the two halves of the key fob back together until you hear a click.
6. Reinsert the emergency key blade.

Where to buy a replacement fob

When it comes to purchasing a replacement key fob for your 2015 Ram 3500, you have a few options, each with pros and cons:

• Ram Dealership:

  • Pros: Guaranteed genuine OEM part, often comes with programming services included. You're assured compatibility and quality.
  • Cons: Most expensive option. Expect to pay anywhere from $250 to $400 or more for the fob and programming.

• Automotive Locksmith:

  • Pros: Often significantly cheaper than the dealership (typically $150-$300 including the fob and programming). They use specialized equipment to program the fob and can cut the key blade on-site. Many offer mobile services, coming to your location.
  • Cons: Quality of aftermarket fobs can vary. Ensure the locksmith uses high-quality replacement parts or ask if you can provide your own OEM fob for them to program.

• Online Retailers (Amazon, eBay, etc.):

  • Pros: Cheapest option for the fob itself, often under $50. Wide variety of aftermarket and sometimes OEM fobs available.
  • Cons: You're only buying the physical fob. You will still need to pay a locksmith or dealer to cut the key blade and program it to your vehicle, which adds to the overall cost. There's also a risk of purchasing a low-quality or incompatible fob from unverified sellers.

If on-board programming isn't supported

Since the 2015 Ram 3500 requires specialized equipment for key fob programming, you will need to engage with a professional service. The cost will depend on whether you go to a Ram dealership or an automotive locksmith.

Beyond simply "programming" the remote functions of the key fob, your 2015 Ram 3500 also uses an immobilizer system. This means the key fob contains a transponder chip that communicates with the vehicle's engine control unit (ECU). If the ECU doesn't recognize the transponder's unique code, the engine will not start, even if the key physically turns in the ignition. When a new key fob is programmed, both the remote functions and the transponder chip must be synced with the vehicle. This requires a diagnostic scan tool.

Cost Expectations (fob + programming + key cutting):

• Dealership: $250 - $400+
• Locksmith: $150 - $300

Find a mobile locksmith or shop on Repairius.