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Acura MDX Key Replacement
Acura MDXs have been on Dallas–Fort Worth roads since the 2001 era, and across 3 key generations this model has used 3 different key systems — transponder; remote-head / flip key; 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 MDX Keys
The table below is our verified key reference for the Acura MDX — 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 |
|---|---|---|---|---|
| MDX | 2001–2006 | Transponder | Megamos ID13 | older Honda keyway |
| MDX | 2007–2013 | Remote-head / flip key | Philips ID46 (Hitag2) | HON66 |
| MDX | 2014–2020 | 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 MDX specifically, the immobilizer families we see are: Megamos ID13, Philips ID46 (Hitag2), 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?
- 2001–2006: Transponder — Megamos ID13 (older Honda keyway)
- 2007–2013: Remote-head / flip key — Philips ID46 (Hitag2) (HON66)
- 2014–2020: Smart key (proximity) — Hitag3 ID47 (HON66)
Our MDX Key Services
- Key replacement — lost, stolen or broken MDX keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — the cheap insurance; most MDX 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 MDX Key FAQ
I lost the only key to my MDX. 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 MDX call.
My MDX is push-to-start. Can you really program that outside the dealer?
Yes. Late-model MDXs (2014–2020) use a proximity smart key on the Hitag3 ID47 system — our trucks carry the fobs and the programmer. We cut the emergency blade too.
My MDX is older — do you still stock keys for it?
Yes. We carry blanks and chips going back to the 2001–2006 generation (transponder), and a code-cut fresh key usually turns a worn lock better than any copy of your worn key.
How fast can you reach my MDX 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.