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Nissan Sentra Key Replacement
Nissan Sentras have been on Dallas–Fort Worth roads since the 2007 era, and across 5 key generations this model has used 5 different key systems — transponder chip key; intelligent key smart-proximity (push-button) / remote-head transponder (turn-key); cwtwb1u840 (smart); cwtwb1u751 (remote-head); early-2013 cwtwb1u815; intelligent key smart-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 Sentra Keys
The table below is our verified key reference for the Nissan Sentra — 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 |
|---|---|---|---|---|
| Sentra | 2007–2012 | Transponder chip key | Philips Crypto 2 / ID46 / Hitag 2 / PCF7936 | NSN14 (Ilco NI04T) |
| Sentra | 2013–2019 | Intelligent Key smart-proximity (push-button) / remote-head transponder (turn-key) | Philips Crypto 2 / ID46 / Hitag 2 / PCF7936/7946/7952 | NSN14 |
| Sentra | 2013–2019 | CWTWB1U840 (smart); CWTWB1U751 (remote-head); early-2013 CWTWB1U815 | 315 MHz | 285E3-3SG0D |
| Sentra | 2020–2023 | Intelligent Key smart-proximity | Hitag AES / ID4A / NXP PCF7953M, NCF29A1M | confirm by VIN (DA34 family) |
| Sentra | 2020–2023 | KR5TXN1 / KR5TXN3 / KR5TXN4 (by button count/trim) | 433–434 MHz | 285E3-6CA1A |
Security System & Immobilizer
Nissan’s NATS immobilizer dates to the late 1990s, evolving from early transponders through ID46 chips to the Intelligent Key proximity system that made push-button start mainstream.
On the Sentra specifically, the immobilizer families we see are: Philips Crypto 2 / ID46 / Hitag 2 / PCF7936, Philips Crypto 2 / ID46 / Hitag 2 / PCF7936/7946/7952, 315 MHz, Hitag AES / ID4A / NXP PCF7953M, NCF29A1M, 433–434 MHz. 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?
- 2007–2012: Transponder chip key — Philips Crypto 2 / ID46 / Hitag 2 / PCF7936 (NSN14 (Ilco NI04T))
- 2013–2019: Intelligent Key smart-proximity (push-button) / remote-head transponder (turn-key) — Philips Crypto 2 / ID46 / Hitag 2 / PCF7936/7946/7952 (NSN14)
- 2013–2019: CWTWB1U840 (smart); CWTWB1U751 (remote-head); early-2013 CWTWB1U815 — 315 MHz (285E3-3SG0D)
- 2020–2023: Intelligent Key smart-proximity — Hitag AES / ID4A / NXP PCF7953M, NCF29A1M (confirm by VIN (DA34 family))
- 2020–2023: KR5TXN1 / KR5TXN3 / KR5TXN4 (by button count/trim) — 433–434 MHz (285E3-6CA1A)
Our Sentra Key Services
- Key replacement — lost, stolen or broken Sentra keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — the cheap insurance; most Sentra 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
Nissan Sentra Key FAQ
I lost the only key to my Sentra. 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 Sentra call.
Will a hardware-store copy start my Sentra?
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 Sentra is older — do you still stock keys for it?
Yes. We carry blanks and chips going back to the 2007–2012 generation (transponder chip key), 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 Sentra 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.