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Acura TLX Key Replacement
Acura TLXs have been on Dallas–Fort Worth roads since the 2015 era, and across 1 key generation this model has used 1 different key system — smart key (proximity). Whichever yours is, DFW Keys 4 Cars cuts and programs it at your location, 24/7: spare keys, lost-everything replacements, fob programming, and lockouts. Call (214) 717-6398.
About TLX Keys
The table below is our verified key reference for the Acura TLX — model years, key types, and the transponder/immobilizer family each generation uses. Generations overlap at boundary years, and trim levels (keyed vs. push-to-start) can differ within the same year, so we always confirm the exact part by VIN before dispatching.
| Model / Generation | Years | Key Type | Transponder / Immobilizer | Blade / FCC |
|---|---|---|---|---|
| TLX | 2015–2021 | Smart key (proximity) | Hitag3 ID47 | HON66 |
Security System & Immobilizer
Acura runs Honda’s immobilizer architecture — ID46-era transponders through current Smart Entry proximity fobs — with the same on-site programming paths.
On the TLX specifically, the immobilizer families we see are: Hitag3 ID47. A key that is cut correctly but not programmed to this system will turn the locks and never start the engine — programming is the half of the job that matters.
Which key does your year have?
- 2015–2021: Smart key (proximity) — Hitag3 ID47 (HON66)
Our TLX Key Services
- Key replacement — lost, stolen or broken TLX keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — the cheap insurance; most TLX spares are done in one short visit
- Fob & transponder programming — remotes, fobiks and smart keys paired to the immobilizer, including proximity fobs
- Lockout service — damage-free entry when the keys are inside, 24/7
- Ignition repair — worn cylinders and keys that won’t turn
Acura TLX Key FAQ
I lost the only key to my TLX. 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 — this is our most common TLX call.
My TLX is push-to-start. Can you really program that outside the dealer?
Yes. Late-model TLXs (2015–2021) use a proximity smart key on the Hitag3 ID47 system — our trucks carry the fobs and the programmer. We cut the emergency blade too.
How fast can you reach my TLX in DFW?
We dispatch the nearest mobile unit across the whole metroplex, 24/7. Call (214) 717-6398 with your location and we’ll give you an honest ETA.