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Fiat 500X Key Replacement

Fiat 500X keys date back to 2016 and span 1 key system across the model’s generations — 4-button flip remote head. DFW Keys 4 Cars cuts and programs every one of them at your location anywhere in Dallas–Fort Worth, 24/7 — spares, all-keys-lost, fobs and lockouts. Call (214) 717-6398.


About 500X Keys

Verified key reference for the Fiat 500X — model years, key types, and the transponder/immobilizer each generation uses. Boundary years can overlap; we confirm the exact part by VIN before dispatching.

Model / GenerationYearsKey TypeTransponder / ImmobilizerBlade / FCC
500X2016–20214-button flip remote headMegamos AES / ID88 (some builds Philips Hitag 3 / ID49)SIP22 (GT15R)

Security System & Immobilizer

Modern US Fiats use Megamos-family chips in flip keys shared with European platforms — programmable with VAG/Fiat-capable equipment.

On the 500X specifically we see: Megamos AES / ID88 (some builds Philips Hitag 3 / ID49). A correctly cut but unprogrammed key turns the locks and never starts the engine — programming is the half of the job that matters.

Which key does your year have?

  • 2016–2021: 4-button flip remote head — Megamos AES / ID88 (some builds Philips Hitag 3 / ID49) (SIP22 (GT15R))

Our 500X Key Services


Fiat 500X Key FAQ

I lost the only key to my 500X. What now?

We come to the vehicle, verify ownership, cut a new key from the VIN, and program it on-site — no tow, no dealer wait.

Will a hardware-store copy start my 500X?

On transponder-era cars it opens doors and nothing else — the chip must be programmed to the immobilizer, which is what we do curbside.

How fast can you reach my 500X in DFW?

We dispatch the nearest mobile unit metroplex-wide, 24/7 — call (214) 717-6398 for an honest ETA.