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Lexus HS 250h Key Replacement
Lexus HS 250h keys date back to 2010 and span 1 key system across the model’s generations — smart access proximity (push-button). 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 HS 250h Keys
Verified key reference for the Lexus HS 250h — 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 / Generation | Years | Key Type | Transponder / Immobilizer | Blade / FCC |
|---|---|---|---|---|
| HS 250h | 2010–2012 | Smart Access proximity (push-button) | Texas DST-AES 128-bit (“H”) | TOY48 (insert) |
Security System & Immobilizer
Lexus shares Toyota’s immobilizer lineage — 4C, 4D67, G and H transponder eras — topped by Smart Access proximity fobs on push-to-start models.
On the HS 250h specifically we see: Texas DST-AES 128-bit (“H”). 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?
- 2010–2012: Smart Access proximity (push-button) — Texas DST-AES 128-bit (“H”) (TOY48 (insert))
Our HS 250h Key Services
- Key replacement — lost, stolen or broken keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — cheap insurance done in one short visit
- Fob & transponder programming — remotes and smart keys paired to the immobilizer
- Lockout service — damage-free entry, 24/7
- Ignition repair — worn cylinders and keys that won’t turn
Lexus HS 250h Key FAQ
I lost the only key to my HS 250h. 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 HS 250h is push-to-start — can you program that outside the dealer?
Yes. Late models (2010–2012) use a proximity smart key on Texas DST-AES 128-bit (“H”) — we carry the fobs and the programmer, and we cut the emergency blade.
How fast can you reach my HS 250h in DFW?
We dispatch the nearest mobile unit metroplex-wide, 24/7 — call (214) 717-6398 for an honest ETA.