Mazda Key Fob Replacement: FCC IDs, Part Numbers & Programming

Replacing a Mazda key fob means matching three things: the FCC ID on the customer's fob (WAZSKE13D01, WAZSKE13D02, WAZSKE13D03 or WAZSKE11D01 on most 2012 and newer smart keys), the button count, and the Mazda part number suffix, because Mazda re-uses one FCC ID across several boards that are not interchangeable. Older Mazdas (roughly 2003–2016) use a 4D63 80-bit transponder on an MZ24/MZ34 blade, and 2010–2015 first-generation smart keys use the WAZX1T7xx family on a DST80 chip. Everything from the WAZSKE13D01 onward programs by OBD with a mainstream tool; Car Key Source stocks genuine OEM and aftermarket versions of the common Skyactiv-era fobs.

Which Mazda key generation are you looking at?

Mazda changed immobilizer families three times in twenty years, and the split lines up neatly with how the vehicle starts. Confirm the generation on the customer's existing key before you quote, and verify on the vehicle where the years overlap.

The practical rule: a 3-button WAZSKE13D01 and a 4-button WAZSKE13D03 can both belong to a CX-5 from the same model year, depending on trim and whether the vehicle has a power liftgate. Match the button layout and the part number on the customer's fob, not just the FCC ID. For a refresher on where the ID is printed, see how to find the FCC ID on a key fob.

Mazda FCC IDs and part numbers locksmiths search most

Two things trip people up. First, WAZSKE13D02 appears on both 3-button and 4-button fobs; the part number decides which board is inside. Second, the WAZSKE11D01 fob on the 2019+ Mazda3 and CX-30 is a different chip family (6A) from the WAZSKE13Dxx fobs, so a CX-5 fob will not program to a CX-30 even though the shells look alike. If the customer's fob is missing, the vehicle's model and year get you close, but the build sheet or a dealer parts lookup by VIN settles the suffix.

Aftermarket or genuine OEM for Mazda?

Both grades exist for the Skyactiv era, and the right answer depends on the job. Genuine OEM Mazda smart keys (WAZSKE13D02 in 3-button KDY3-67-5DY and 4-button TK52-67-5DY and GJY9-67-5DY versions) ship in Mazda packaging with the emergency blade and are the safe choice for a lease return, a dealer-referred job, or a customer who has already had a bad experience with a remote that dropped range. The full genuine range is on the OEM hub.

Aftermarket Mazda smart keys cover the same FCC IDs at a lower cost of goods and, for a WAZSKE13D01 or WAZSKE13D03 that programs cleanly on the first try, the customer cannot tell the difference. Where aftermarket is the obvious call: fleet and rental work, spare-key adds, and any vehicle older than the current Skyactiv generation. Where it pays to go genuine: the 2016–2019 CX-5 and CX-9 4-button (TK52-67-5DY), which is a high-volume fob where a stock-out costs you the job, and any all-keys-lost where you want to remove the part from the list of variables. More on the trade-off in aftermarket vs genuine OEM car keys.

How Mazda key fobs are programmed

• 4D63 transponder keys (2003–2016). Add-a-key is a tool job by OBD on most models; some earlier Mazdas support an onboard two-working-keys procedure inherited from the Ford platform, but verify against the specific model before relying on it. All keys lost is OBD with a mainstream programmer. Cut the MZ24/MZ34 blade before you start.
• First-generation smart keys (WAZX1T7…, 2010–2015). OBD programming, add-a-key or all-keys-lost, with Autel, Xhorse, Lonsdor or an equivalent. Keep the fob inside the vehicle and touch it to the start button if the tool prompts for it.
• Skyactiv smart keys (WAZSKE13D01/02/03, 2012–2023). OBD programming is routine on the tools above. All-keys-lost on these is one of the easier Japanese-brand jobs: no PIN purchase, no dealer login. Expect the tool to erase all keys and re-learn, so have every fob the customer wants to keep in the cabin.
• WAZSKE11D01 (2019+ Mazda3, CX-30). Same OBD route, but the 6A chip is newer; check that your programmer's Mazda coverage lists the specific model year before you roll. Tool-side coverage improved through 2021–2023 software updates, so a tool that has not been updated may show the model but fail at the write.
• Remote-only fobs on older Mazdas. Several 2004–2012 Mazdas have an onboard remote-learn procedure using the driver's door and ignition cycles. It varies by model; treat it as a bonus, not a plan.

If a Mazda smart key refuses to program, the usual causes are a wrong board under a matching FCC ID, a low CR2025/CR2032 in the fob, or a weak vehicle battery during the erase step. Our key fob won't program checklist walks the order to check them in.

Blades, keyways and entry tools for Mazda

Mazda's mainstream keyway from the early 2000s through the Skyactiv generation is the MZ24/MZ34 family (MZ31 profile on the transponder blank in our catalog). The emergency blade inside the WAZSKE smart keys is the same profile, so one blade stock covers both the transponder keys and the smart-key emergency inserts. For universal flip remotes, the KEYDIY MZ34 #27 blade drops into Xhorse and KEYDIY flip shells. For entry and decoding on Mazda door locks, the Original Lishi MAZ24R covers the Mazda/Ford door and trunk cylinder; see the Lishi tools hub for the full set.

What Car Key Source stocks for Mazda

The full make page is at Mazda keys and remotes. Trade pricing is unlocked with an approved wholesale account — most applications are approved instantly; apply here. In-stock orders placed by 4 PM ET (Mon–Fri) leave the warehouse the same business day. US orders ship from our Florida warehouse; Canadian orders ship from Ontario — nothing crosses the border, so there is no customs, duty or brokerage for the buyer. If a key or remote won't program on the vehicle we listed it against, it is refunded within 30 days of delivery and we pay the return freight.

FAQ

Are WAZSKE13D01 and WAZSKE13D02 interchangeable?

Not reliably. They share the HITAG Pro chip family and the 315 MHz band, and some part numbers (KDY3-67-5DY) are listed under both IDs, but the board inside is defined by the Mazda part number, not the FCC ID. Match the part number and button count on the customer's fob and you avoid the problem entirely.

Does a Mazda smart key need a PIN or dealer code to program?

No. Mazda smart keys from the 2010 first-generation fobs through the current Skyactiv keys program by OBD with Autel, Xhorse, Lonsdor and similar tools without a security code, including all-keys-lost. Confirm your tool's software lists the exact model year, particularly for the 2019+ Mazda3 and CX-30.

Which chip is in a 2019+ Mazda3 or CX-30 key?

The WAZSKE11D01 fob on the new-platform Mazda3 and the CX-30 carries an ATMEL AES 6A transponder, which is different from the HITAG Pro (ID49) used in the WAZSKE13D01/02/03 fobs. The shells look similar; the boards are not cross-compatible.

Which key blade do Mazda fobs use?

The MZ24/MZ34 family covers the transponder keys from about 2003 to 2016 and the emergency blade inside Skyactiv smart keys. The KEYDIY MZ34 #27 blade fits Xhorse and KEYDIY universal flip remotes for the same vehicles.

Does Car Key Source sell genuine OEM Mazda keys?

Yes. The WAZSKE13D02 fobs in 3-button KDY3-67-5DY and 4-button TK52-67-5DY and GJY9-67-5DY versions are stocked as genuine OEM Mazda parts, alongside aftermarket options for the same and neighbouring FCC IDs. See the OEM hub.