2017 Peterbilt 579 Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2017 Peterbilt 579 does not support DIY on-board key fob programming. Programming of new or replacement key fobs for this vehicle requires a specialized scan tool. This procedure must be performed by a Peterbilt dealership or a qualified automotive locksmith.

This is typically due to the integration of the key fob with the vehicle's immobilizer system, which requires precise synchronization and security protocols that can only be accessed with proprietary diagnostic equipment.

Battery replacement

1. Locate the small notch or slot on the side of the key fob. This is usually near the key ring loop.
2. Carefully insert a small flat-head screwdriver or a coin into the notch.
3. Gently twist the screwdriver or coin to pry the two halves of the fob apart. Be careful not to damage the plastic casing.
4. Once open, you will see the circuit board and the CR2032 coin cell battery.
5. Note the orientation of the battery (which side is facing up). Using a non-metallic tool (like a plastic pry tool or your fingernail), carefully dislodge the old battery.
6. Insert the new CR2032 battery with the positive (+) side facing the same direction as the old battery.
7. Align the two halves of the key fob and press them firmly together until they snap securely into place.
8. Test the fob's functionality (lock, unlock, panic) to ensure it's working correctly.

Where to buy a replacement fob

When considering a replacement key fob for your 2017 Peterbilt 579, you have several options, each with its own pros and cons:

• Peterbilt Dealership:

  • Pros: Guaranteed genuine OEM part, expert programming, and support for any related vehicle systems. You're ensured compatibility and reliability.
  • Cons: This is typically the most expensive option, with fobs costing anywhere from $150 to $300, plus separate programming fees that can range from $75 to $150 per fob.

• Automotive Locksmith:

  • Pros: Often more affordable than a dealership, locksmiths can provide and program aftermarket or OEM-equivalent fobs. Many mobile locksmiths can come to your location, saving you a trip. They generally have the necessary scan tools for programming. Prices for aftermarket fobs and programming can range from $100 to $250.
  • Cons: While many locksmiths are highly skilled, ensure they have experience with heavy-duty truck systems like Peterbilt to avoid potential issues.

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

  • Pros: Potentially the cheapest option for purchasing the fob itself, with prices for blanks or aftermarket fobs sometimes as low as $30 to $80. A wide variety of options are available.
  • Cons: You're only buying the physical fob; you'll still need to pay a locksmith or dealer for programming. There's a risk of purchasing a non-compatible or low-quality fob, which can lead to programming difficulties or premature failure. Always verify the FCC ID (N5F-A08TAA) and OEM part number (23184752) before purchasing.

If on-board programming isn't supported

As previously mentioned, on-board programming is not available for your 2017 Peterbilt 579. This means you will need to rely on a professional for programming.

• Cost Expectations: Expect to pay for both the key fob itself and the programming service. A reasonable total cost for a new fob and programming from a qualified locksmith might be in the $100 - $250 range for an aftermarket unit, or $200 - $450 from a dealership for an OEM unit. Always get a quote in advance.

• Immobilizer Transponder: The key fob for your Peterbilt 579 contains a transponder chip that communicates with the vehicle's immobilizer system. This system is a critical security feature designed to prevent the vehicle from starting without the correctly programmed key. When a new fob is programmed, the transponder information is synced with the vehicle's engine control unit (ECU). This is why specialized equipment is necessary and why DIY methods are not applicable for this model.

Find a mobile locksmith or shop on Repairius.