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Hyundai Sonata Key Replacement
Hyundai Sonatas have been on Dallas–Fort Worth roads since the 2006 era, and across 5 key generations this model has used 5 different key systems — transponder + separate rke remote; smart-proximity (push-button); flip remote-head (fcc tq8-rke-4f16); flip remote-head (fcc tq8-rke-4f25). 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 Sonata Keys
The table below is our verified key reference for the Hyundai Sonata — model years, key types, and the transponder/immobilizer family each generation uses. Generations overlap at boundary years, so we always confirm the exact part by VIN before dispatching.
| Model / Generation | Years | Key Type | Transponder / Immobilizer | Blade / FCC |
|---|---|---|---|---|
| Sonata | 2006–2010 | Transponder + separate RKE remote | Philips Crypto ID46 / PCF7936 | HY15 |
| Sonata | 2011–2014 | Smart-proximity (push-button) | Philips Crypto 2 / ID46 / PCF7952A | HY18R / KIA7 (insert) |
| Sonata | 2015–2017 | Flip remote-head (FCC TQ8-RKE-4F16) | Philips ID46 / DST80 — confirm by VIN | HY18R |
| Sonata | 2017–2019 | Flip remote-head (FCC TQ8-RKE-4F25) | Texas DST AES 128-bit | HY18R |
| Sonata | 2019–2022 | Flip remote-head (FCC TQ8-RKE-4F40) | Philips ID47 / Hitag 3 | HY18R |
Security System & Immobilizer
Hyundai moved from ID46-era transponders and flip keys to Hitag3 ID47 smart keys, with the newest models on ID4A encryption. Chip family determines the programming path, and we match it by VIN.
On the Sonata specifically, the immobilizer families we see are: Philips Crypto ID46 / PCF7936, Philips Crypto 2 / ID46 / PCF7952A, Philips ID46 / DST80 — confirm by VIN, Texas DST AES 128-bit, Philips ID47 / Hitag 3. 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?
- 2006–2010: Transponder + separate RKE remote — Philips Crypto ID46 / PCF7936 (HY15)
- 2011–2014: Smart-proximity (push-button) — Philips Crypto 2 / ID46 / PCF7952A (HY18R / KIA7 (insert))
- 2015–2017: Flip remote-head (FCC TQ8-RKE-4F16) — Philips ID46 / DST80 — confirm by VIN (HY18R)
- 2017–2019: Flip remote-head (FCC TQ8-RKE-4F25) — Texas DST AES 128-bit (HY18R)
- 2019–2022: Flip remote-head (FCC TQ8-RKE-4F40) — Philips ID47 / Hitag 3 (HY18R)
Our Sonata Key Services
- Key replacement — lost, stolen or broken Sonata keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — the cheap insurance; most Sonata spares are done in one short visit
- Fob & transponder programming — remotes, fobiks and smart keys paired to the immobilizer
- Lockout service — damage-free entry when the keys are inside, 24/7
- Ignition repair — worn cylinders and keys that won’t turn
Hyundai Sonata Key FAQ
I lost the only key to my Sonata. 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 Sonata call.
Will a hardware-store copy start my Sonata?
It will open the doors and nothing else on transponder-era cars — the chip inside the key must be programmed to the immobilizer, which is the part we do curbside.
My Sonata is older — do you still stock keys for it?
Yes. We carry blanks and chips going back to the 2006–2010 generation (transponder + separate rke remote), 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 Sonata 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.