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Acura RLX Key Replacement

Acura RLX keys date back to 2014 and span 1 key system across the model’s generations — smart key (proximity). 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 RLX Keys

Verified key reference for the Acura RLX — 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
RLX2014–2020Smart key (proximity)Hitag3 ID47HON66

Security System & Immobilizer

Acura runs Honda’s immobilizer architecture — ID46-era transponders through current Smart Entry proximity fobs.

On the RLX specifically we see: Hitag3 ID47. 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?

  • 2014–2020: Smart key (proximity) — Hitag3 ID47 (HON66)

Our RLX Key Services


Acura RLX Key FAQ

I lost the only key to my RLX. 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.

My RLX is push-to-start — can you program that outside the dealer?

Yes. Late models (2014–2020) use a proximity smart key on Hitag3 ID47 — we carry the fobs and the programmer, and we cut the emergency blade.

How fast can you reach my RLX in DFW?

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