2014 Peterbilt 579 Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2014 Peterbilt 579 does not support DIY, on-board key fob programming. The sophisticated security systems in modern commercial trucks like the Peterbilt 579 require specialized diagnostic tools to program new key fobs. This process typically involves connecting to the vehicle's onboard computer system (often referred to as the ECU or BCM) and using proprietary software to add or delete key fobs from the vehicle's memory. This is a measure to enhance vehicle security and prevent unauthorized access.

Therefore, you will need to have your key fob programmed by a Peterbilt dealership or a qualified automotive locksmith who specializes in commercial vehicles. They possess the necessary equipment and software to perform this procedure correctly and efficiently.

Battery replacement

1. Locate the battery compartment: The battery compartment is usually on the back of the key fob or can be accessed by gently prying the two halves of the fob apart. Look for a small notch or seam along the edge.
2. Open the fob: Use a small, flat-head screwdriver or a coin to carefully pry open the key fob along the seam. Be gentle to avoid damaging the internal components or the casing.
3. Remove the old battery: Note the orientation of the battery (which side is facing up). Gently pop out the old CR2032 battery.
4. Insert the new battery: Place a new CR2032 battery into the compartment, ensuring it's oriented correctly (typically with the positive (+) side facing up, matching the orientation of the old battery).
5. Reassemble the fob: Carefully align the two halves of the key fob and press them together until they snap securely into place.
6. Test the fob: Test the key fob functions (lock, unlock, panic) to ensure the new battery is working correctly.

Where to buy a replacement fob

• Peterbilt Dealership:

  • Pros: Guaranteed genuine OEM part, expert programming, and support directly from the manufacturer. They can also provide a new cut key if needed.
  • Cons: Often the most expensive option. Expect to pay anywhere from $150 to $300+ for the fob itself, plus an additional $75 to $150+ for programming and cutting if a new key blade is part of the fob.

• Automotive Locksmith Specializing in Commercial Vehicles:

  • Pros: Often more affordable than a dealership. Many locksmiths offer mobile services, coming to your location, which is convenient. They can often program OEM fobs or compatible aftermarket options.
  • Cons: Ensure the locksmith has experience with commercial Peterbilt vehicles, as not all automotive locksmiths have the necessary tools or expertise. Prices can range from $100 to $250+ for the fob and programming.

• Online Retailers (e.g., Amazon, eBay, specialized key fob sites):

  • Pros: Potentially the cheapest option to purchase the physical key fob. You might find genuine OEM fobs or quality aftermarket alternatives at a lower price.
  • Cons: You still need to arrange for programming by a dealership or locksmith, adding to the total cost. There's a risk of purchasing an incompatible or counterfeit fob from unverified sellers. Verify FCC ID and part numbers carefully before buying.

If on-board programming isn't supported

As established, on-board programming is not an option for the 2014 Peterbilt 579. This means you will incur programming costs in addition to the cost of the replacement key fob itself.

• Cost Expectations: As mentioned above, programming charges from a dealership or commercial vehicle locksmith typically range from $75 to $150 per session. This fee usually covers the labor and use of their specialized diagnostic equipment.
• Immobilizer Transponder: Many Peterbilt keys, especially if they are integrated into the fob (a "switchblade" style or an immobilizer chip inside a separate key head), contain an immobilizer transponder chip. This chip communicates with the vehicle's immobilizer system, allowing the truck to start. If you are replacing a key that includes this function, the transponder chip will also need to be programmed to the truck by the dealership or locksmith. This is a separate process from programming the remote lock/unlock functions but is often done concurrently. Without proper transponder programming, even if the remote functions work, the truck will not start.

Find a mobile locksmith or shop on Repairius.