2023 Volkswagen Jetta key fob.

OEM & aftermarket part numbers

The 2023 Volkswagen Jetta ships from the factory with a proximity smart key identified by the OEM part numbers below. When ordering a replacement, the OEM part number is the safest reference at a dealer parts counter; for aftermarket purchases, prioritize matching the FCC ID and the transponder chip family.

Aftermarket fobs for the 2023 Volkswagen Jetta typically run $45–$120, while OEM units from a Volkswagen dealer cost $220–$420 for the same hardware. Whichever route you choose, insist that the listing explicitly states the chip family and one of the FCC IDs above — a "looks the same" fob with a wrong-generation chip is the single most common cause of a successful-looking pairing that nonetheless leaves the engine refusing to crank.

Button configuration

The OEM 2023 Jetta fob carries the following buttons. When shopping aftermarket, match this layout exactly — a fob with extra buttons your vehicle wasn't equipped to receive (remote start, power liftgate) won't add features it didn't ship with.

Transponder chip & immobilizer

Used by VW, Audi, Skoda, SEAT, and select MQB-platform vehicles. Programming requires a CS file or component security data; modern Xhorse and Autel tools handle most cases. If you're sourcing a replacement, look for chip family "Megamos AES" on the listing. Generic descriptions like "fits 2010-2020 trucks" without naming the chip are red flags.

More vehicles using this chip: browse the Megamos AES compatibility hub →

Aftermarket programmer compatibility

Below is the compatibility table for the chip family used in the 2023 Jetta. Full means the programmer pairs new keys and handles all-keys-lost out of the box. Partial means add-key works on most trims but all-keys-lost may require an additional adapter or token. Dealer means no aftermarket support at this writing — the dealer or a locksmith with OEM tooling is required.

Pairing notes for this model year

The 2023 Jetta uses an AES-128 secured chip (Megamos AES) that requires a programmer with the correct license to read the vehicle's security PIN over OBD-II before it can pair a new fob. Onboard ignition-cycle and door-lock procedures will not succeed on this vehicle — if a YouTube video tells you otherwise, the procedure was almost certainly recorded on an earlier model year that used a different chip.

Two practical paths: (1) call a mobile automotive locksmith with one of the "Full" programmers above (typically $120–$220 plus the cost of the fob itself), or (2) take the vehicle to your Volkswagen dealer ($200–$420 plus tow if you have no working key). The locksmith almost always wins on convenience and total cost.

Verifying the fob is paired

After pairing, walk ten feet from the vehicle and test all of the following from the new fob: lock, unlock, panic (if equipped), and trunk or liftgate. Each should respond on the first press. Re-enter and attempt to start; the immobilizer warning light on the dash should turn off within a second of the ignition reaching the ON position. If it stays solid or flashes, the transponder chip in your new fob is not being recognized — almost always a wrong-chip aftermarket fob.

Source notes

Vehicle make, model, and model-year coverage validated against the live NHTSA vPIC API at the time of this seed. OEM part number prefixes derived from documented Volkswagen parts catalog conventions; specific suffixes and aftermarket SKUs are illustrative pending direct OEM confirmation per VIN. FCC IDs sourced from the FCC ID public database. Transponder chip and programmer compatibility data assembled from manufacturer datasheets (NXP, Texas Instruments, EM Microelectronic), Autel/Xhorse/AutoProPAD published vehicle coverage lists, and the OBD2 community immobilizer database.

If your fob behaves differently than described, please send a correction so we can update this guide.