2016 Honda Odyssey Key Fob Programming Guide

Quick Reference

Step-by-Step On-Board Programming (Remote Functions Only)

The 2016 Honda Odyssey allows for DIY programming of the keyless entry remote functions. This procedure will not program the immobilizer chip, which is required for the vehicle to start. If you have a new key fob, its integrated transponder chip will still need to be programmed by a locksmith or Honda dealership using specialized diagnostic equipment.

Here's how to program the remote functions:

1. Gather all existing working key fobs (if any) and the new key fob you wish to program.
2. Enter the vehicle and close all doors.
3. Insert an existing, working key into the ignition.
4. Turn the ignition to the ON (II) position (do not start the engine), then turn it to OFF.
5. Repeat Step 4 three more times (for a total of four ON/OFF cycles) within 10 seconds of each other. The last cycle should end with the ignition in the OFF position.
6. Immediately after the fourth cycle, press and hold the LOCK button on the new key fob you wish to program. You will hear a click or an audible chime from the door locks. Continue holding the LOCK button until you hear the click/chime again.
7. Within 5 seconds, press the LOCK button on all other key fobs you wish to program (including existing ones) until you hear the click/chime for each. This step programs all your key fobs simultaneously.
8. Once all key fobs are programmed, turn the ignition to the ON (II) position to exit programming mode. Test all key fobs to ensure they lock and unlock the doors.

If you have trouble, ensure you are performing the steps quickly and accurately. If the procedure fails, try again from the beginning.

Battery Replacement (CR2032)

Replacing the battery in your 2016 Honda Odyssey key fob is a straightforward process:

1. Locate the small release button or switch on the side of the key fob. Press it to release the integrated key blade. Pull the key blade out.
2. With the key blade removed, you'll see a slot or seam on the side of the fob casing. Use a small flathead screwdriver or a coin to carefully pry apart the two halves of the key fob.
3. Once opened, you'll see the circuit board and the CR2032 coin cell battery. Note the orientation of the battery (positive (+) side up).
4. Gently remove the old battery and insert the new CR2032 battery with the positive (+) side facing up.
5. Carefully realign the two halves of the key fob and press them together until they snap securely into place.
6. Reinsert the key blade.

Test the key fob functions to ensure the new battery is working correctly.

Where to Buy a Replacement Fob

When considering where to purchase a replacement key fob for your 2016 Honda Odyssey, you have several options, each with pros and cons:

• Honda Dealership:

  • Pros: Guaranteed genuine OEM part, can handle both key cutting and immobilizer programming. They have all the necessary diagnostic tools.
  • Cons: Most expensive option. Expect to pay anywhere from $250 - $400+ for the fob, cutting, and programming.

• Automotive Locksmith:

  • Pros: Often more affordable than a dealership. Many locksmiths have mobile services and can come to your location. They can cut the key blade and program both the remote and the immobilizer chip.
  • Cons: Quality of aftermarket fobs can vary. Ensure the locksmith uses high-quality parts.
  • Cost Expectation: Typically $150 - $250, depending on the fob quality and whether it's a mobile service.

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

  • Pros: Cheapest option for the physical fob. A wide variety of aftermarket and sometimes OEM-spec fobs are available.
  • Cons: You still need to pay for key cutting and immobilizer programming separately. Risk of purchasing a non-compatible or low-quality fob. The images might not always accurately reflect the product.
  • Cost Expectation: Fob itself can be $20 - $80. You'll then need to factor in locksmith or dealer costs for cutting and immobilizer programming, usually an additional $75 - $150+.

If On-Board Programming Isn't Supported (Immobilizer Transponder)

While the remote functions of your 2016 Honda Odyssey key fob can be programmed DIY, the critical immobilizer transponder chip cannot. The immobilizer system is a security feature that prevents the car from being started without the correct chip being recognized by the vehicle's computer.

If you have a new key fob that has never been linked to your vehicle, even if you successfully program the remote functions, the car will not start until the immobilizer transponder is programmed. This requires specialized diagnostic equipment that interfaces with the vehicle's onboard computer (ECU/ECM).

Cost Expectations for Immobilizer Programming:

• Locksmith: Typically charges $75 - $150 for immobilizer programming, in addition to any key cutting fees.
• Dealership: Usually includes immobilizer programming as part of their comprehensive key replacement service, contributing to the higher overall cost (as mentioned above).

Ensure that any replacement fob you purchase explicitly states it includes a compatible transponder chip, often a Philips Crypto 46 (ID46) type, although verification by a locksmith or dealer is always recommended for specific compatibility.