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Chrysler Pacifica Key Replacement
Chrysler Pacificas have been on Dallas–Fort Worth roads since the 2004 era, and across 2 key generations this model has used 2 different key systems — transponder (remote head); smart proximity (push-to-start). 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 Pacifica Keys
The table below is our verified key reference for the Chrysler Pacifica — 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 |
|---|---|---|---|---|
| Pacifica | 2004–2008 | Transponder (remote head) | Philips ID46 / NXP PCF7941 | Y160 (CY24) |
| Pacifica | 2017–2021 | Smart proximity (push-to-start) | Hitag AES / ID 4A / NXP PCF7953M / NCF29A1M | Y171 emergency insert |
Security System & Immobilizer
Chrysler’s Sentry Key immobilizer (SKIM) started with 4D64 chips, moved to Philips ID46, then to the WIN-module fobik key, and finally to Keyless Enter-N-Go proximity fobs on Hitag AES (4A) encryption.
On the Pacifica specifically, the immobilizer families we see are: Philips ID46 / NXP PCF7941, Hitag AES / ID 4A / NXP PCF7953M / NCF29A1M. 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?
- 2004–2008: Transponder (remote head) — Philips ID46 / NXP PCF7941 (Y160 (CY24))
- 2017–2021: Smart proximity (push-to-start) — Hitag AES / ID 4A / NXP PCF7953M / NCF29A1M (Y171 emergency insert)
Our Pacifica Key Services
- Key replacement — lost, stolen or broken Pacifica keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — the cheap insurance; most Pacifica 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
Chrysler Pacifica Key FAQ
I lost the only key to my Pacifica. 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 Pacifica call.
My Pacifica is push-to-start. Can you really program that outside the dealer?
Yes. Late-model Pacificas (2017–2021) use a proximity smart key on the Hitag AES / ID 4A / NXP PCF7953M / NCF29A1M system — our trucks carry the fobs and the programmer. We cut the emergency blade too.
How fast can you reach my Pacifica 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.