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Cadillac CTS Key Replacement
Cadillac CTSs have been on Dallas–Fort Worth roads since the 2003 era, and across 6 key generations this model has used 5 different key systems — transponder; megamos 13/id13 or crypto 48/id48; remote-head flip key; hitag 2 ext./id46e. 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 CTS Keys
The table below is our verified key reference for the Cadillac CTS — 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 |
|---|---|---|---|---|
| CTS | 2003–2007 | Transponder | Megamos 13/ID13 or Megamos Crypto 48/ID48 (PassKey III / TP08) | confirm by VIN |
| CTS | 2003-2007 | MEGAMOS 13/ID13 or Crypto 48/ID48 | — | PassKey III or TP08 |
| CTS | 2008–2014 | Remote-head flip key | Hitag2 Ext. / ID46E (PCF7937E/PCF7941E) – FCC M3N5WY7777A | B111 / HU100 |
| CTS | 2008-2014 | Hitag 2 Ext./ID46E | M3N5WY7777A | PCF7952E, PCF7941E |
| CTS | 2014-2019 | Hitag 2 Ext./ID46E | HYQ2AB | PCF7937E, PCF7961E |
| ATS / CTS / XTS | 2014–2019 | Smart proximity | Hitag2 Ext. / ID46E (PCF7937E/PCF7961E) – FCC HYQ2AB | HU100 emergency insert |
Security System & Immobilizer
Cadillac pioneered VATS resistor keys in the 80s and moved through PassKey and PK3 transponders to ID46 keys and today’s proximity fobs — every era still programmable on-site.
On the CTS specifically, the immobilizer families we see are: Megamos 13/ID13 or Megamos Crypto 48/ID48 (PassKey III / TP08), Hitag2 Ext. / ID46E (PCF7937E/PCF7941E) – FCC M3N5WY7777A, M3N5WY7777A, HYQ2AB, Hitag2 Ext. / ID46E (PCF7937E/PCF7961E) – FCC HYQ2AB. 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?
- 2003–2007: Transponder — Megamos 13/ID13 or Megamos Crypto 48/ID48 (PassKey III / TP08) (confirm by VIN)
- 2003-2007: MEGAMOS 13/ID13 or Crypto 48/ID48 — — (PassKey III or TP08)
- 2008–2014: Remote-head flip key — Hitag2 Ext. / ID46E (PCF7937E/PCF7941E) – FCC M3N5WY7777A (B111 / HU100)
- 2008-2014: Hitag 2 Ext./ID46E — M3N5WY7777A (PCF7952E, PCF7941E)
- 2014-2019: Hitag 2 Ext./ID46E — HYQ2AB (PCF7937E, PCF7961E)
- 2014–2019: Smart proximity — Hitag2 Ext. / ID46E (PCF7937E/PCF7961E) – FCC HYQ2AB (HU100 emergency insert)
Our CTS Key Services
- Key replacement — lost, stolen or broken CTS keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — the cheap insurance; most CTS 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
Cadillac CTS Key FAQ
I lost the only key to my CTS. 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 CTS call.
My CTS is push-to-start. Can you really program that outside the dealer?
Yes. Late-model CTSs (2014–2019) use a proximity smart key on the Hitag2 Ext. / ID46E (PCF7937E/PCF7961E) – FCC HYQ2AB system — our trucks carry the fobs and the programmer. We cut the emergency blade too.
My CTS is older — do you still stock keys for it?
Yes. We carry blanks and chips going back to the 2003–2007 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 CTS 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.