2019 Honda Odyssey Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2019 Honda Odyssey does not support DIY on-board programming for its key fob. This vehicle utilizes an advanced immobilizer system that requires a specialized scan tool to program new key fobs. Attempting to program a new key fob without the proper equipment can lead to the remote not functioning or, in some cases, the vehicle's immobilizer system being activated, preventing the vehicle from starting.

Therefore, a professional locksmith or Honda dealership is required to program new key fobs for your 2019 Honda Odyssey.

Battery replacement

If your key fob is no longer working, the most common culprit is a dead battery. Replacing the battery is a simple process:

1. Locate the small release button on the side or back of the key fob and press it to release the emergency key blade. Pull the key blade out.
2. With the emergency key removed, you will see a slot or a small indentation along the seam of the key fob casing. Use a small flathead screwdriver or a coin to carefully pry open the two halves of the fob.
3. Once opened, you will see the circuit board and the CR2032 coin cell battery. Note the orientation of the battery (usually positive side up).
4. Gently pop out the old battery and insert the new CR2032 battery with the correct orientation.
5. Align the two halves of the key fob and press them together until they snap securely into place.
6. Reinsert the emergency key blade into the fob.

Test the key fob to ensure it's working correctly.

Where to buy a replacement fob

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

• Honda Dealership:

  • Pros: Guaranteed genuine OEM part, often includes programming in the purchase price, and technicians are highly familiar with Honda systems.
  • Cons: Most expensive option. Expect to pay anywhere from $250 to $400+ for the fob and programming.

• Professional Locksmith:

  • Pros: Often more affordable than a dealership, many locksmiths offer mobile services, and they can typically provide and program both OEM and high-quality aftermarket fobs. They also have the necessary diagnostic tools.
  • Cons: Prices can vary, so it's wise to get a quote upfront. Ballpark cost for a fob and programming is typically $150 to $300.

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

  • Pros: Can find fobs for a significantly lower price (sometimes $30 to $100 for the fob itself).
  • Cons: You need to be very careful about verifying the correct FCC ID (CWTWB1G007) and part number (72147-THR-A01) to ensure compatibility. You will still need to pay a locksmith or dealership for cutting the emergency key blade and programming the fob, adding to the overall cost. There's also a risk of purchasing a counterfeit or incompatible fob, which can be a waste of money.

If on-board programming isn't supported

As mentioned, the 2019 Honda Odyssey requires specialized equipment for key fob programming. This is due to its advanced immobilizer system, which uses a transponder chip embedded in the key fob to communicate with the vehicle's engine control unit (ECU). This immobilizer system is a security feature designed to prevent theft. The cost estimates provided above (dealership: $250-$400+, locksmith: $150-$300) generally include both the cost of the key fob and the programming service. If you purchase an aftermarket fob online, remember to factor in additional costs for:

• Key Cutting: The emergency key blade within the fob will need to be cut to match your vehicle's ignition and door locks. This is a separate service usually performed by a locksmith or dealership and can cost $20-$50.
• Programming: A locksmith or dealership will need to use their scan tool to pair the new key fob's transponder chip and remote functions with your vehicle. This is the primary programming cost.

Important Note: The transponder functionality is crucial for starting the car. Even if the remote unlock/lock functions work, the car will not start without a properly programmed transponder chip. Ensure that any replacement fob you purchase includes a compatible transponder chip.

Find a mobile locksmith or shop on Repairius.