2015 Honda Odyssey — Key Fob Programming Guide

Quick reference

Item	Detail
FCC ID	Varies by trim and button count; verify on the label of your existing fob or by VIN with a dealer. Multiple FCC IDs were used on this generation.
OEM Fob PN	VIN-specific; Honda used different part numbers depending on trim (power doors/tailgate). Confirm by VIN to avoid mismatch.
Aftermarket Options	Remote-head key assemblies compatible with 2014–2017 Odyssey; choose units that exactly match your OEM FCC ID and button layout. Brands include KeylessOption, Strattec, and others.
Battery Type	CR1616 coin cell in most remote-head keys for this model year (verify by opening your fob).
Programmable On-Board?	No. 2015 Odyssey requires OBD-II scan tool/immobilizer programming.
Cuts Required?	Yes. Sidewinder/laser key cut to code, plus immobilizer programming.

Step-by-step on-board programming

Honda did not enable a DIY, key-cycling, on-board procedure for the 2015 Odyssey. Both the remote functions (lock/unlock/doors) and the immobilizer transponder must be learned through the vehicle’s immobilizer system using a scan tool. This is because the Odyssey uses a rolling-code Remote Keyless Entry module tied to the Honda immobilizer (anti-theft) system.

What you’ll need if you’re equipped to program:

• A compatible programmer (Honda HDS, Autel IM508/IM608, Advanced Diagnostics Smart Pro, Xhorse Key Tool Max Pro with OBD cable, etc.)
• All keys you intend to keep (Honda procedures often erase absent keys during programming)
• Cut key to the correct code

Professional programming outline (for reference):

1. Cut the new key: Provide the locksmith with your key code or an original key to duplicate on a sidewinder (laser) machine. Verify mechanical operation in all locks and ignition.
2. Connect the scan tool: Hook to OBD-II, stabilize battery voltage (a charger/maintainer is recommended).
3. Select immobilizer function: Choose Honda/Acura → Odyssey (2015) → Immobilizer/Remote → Add Key or All Keys Lost as appropriate.
4. Security login: The tool will retrieve or compute the Honda seed/pin for authorization.
5. Program the key: Follow prompts to register the transponder chip (ID46/Honda type) and then learn the remote functions.
6. Cycle ignition as prompted: Most procedures require several ON/OFF cycles and confirmation beeps.
7. Test everything: Verify engine starts, and test all buttons (lock, unlock, sliding doors, tailgate, panic).

If you don’t have the above tools, plan on using a locksmith or dealer.

Battery replacement

Most 2015 Odyssey remote-head keys use a CR1616 coin-cell battery.

1. Remove the small screw on the back of the key head (if present). Some variants are snap-together without a screw.
2. Carefully pry the case along the seam with a plastic pry tool or small coin.
3. Note battery orientation (+ side typically faces out). Swap in a fresh CR1616.
4. Inspect the rubber keypad and contacts; clean lightly if needed.
5. Snap the case back together and reinstall the screw. Test the buttons from a few feet away.

Tip: If range is still poor after replacement, check for worn button pads or consider replacing the fob shell.

Where to buy a replacement fob

• Honda dealer (OEM):

  • Pros: Guaranteed correct FCC ID/part by VIN; latest superseded part numbers; warranty.
  • Cons: Highest price; programming appointment required.
  • Typical cost: $150–250 for the fob/key plus $100–150 to program/cut.

• Automotive locksmith:

  • Pros: Mobile service; can cut and program on-site; often lower total cost than dealer.
  • Cons: Parts may be aftermarket unless you request OEM; availability varies by area.
  • Typical cost: $150–280 total for an additional key; $220–380 for all-keys-lost.

• Online (Amazon/eBay/parts houses):

  • Pros: Lowest part price; wide selection.
  • Cons: Must exactly match FCC ID and button layout; many locksmiths won’t program customer-supplied parts; no guarantee of used board quality.
  • Typical cost: $25–60 for aftermarket remote-head key; you’ll still pay $25–50 for laser cutting and $80–150 for programming.

If on-board programming isn’t supported

Since there is no DIY on-board procedure for the 2015 Odyssey, expect to use a dealer or locksmith with an immobilizer-capable scan tool. The Odyssey’s key uses a Philips Crypto transponder (ID46/Honda type) paired to the immobilizer. During programming, the vehicle may erase absent keys—so bring every key you want to keep.

Cost expectations:

• Add-a-key (you still have at least one working key): $150–280 total via locksmith; $200–350 at dealer.
• All keys lost: $220–400 depending on travel, security login, and cutting from code.

Notes:

• The mechanical blade is a sidewinder (laser) cut—most hardware stores cannot cut these; you’ll need a locksmith or dealer with a laser machine.
• Match the FCC ID and button count (some trims include power sliding doors and/or power tailgate). Using the wrong FCC ID can prevent remote functions from pairing even if the engine starts.
• If you own an immobilizer-capable programmer, follow your tool’s guided Honda procedure, keep battery voltage stable, and have all keys present.

Find a mobile locksmith or shop on Repairius.