- (214) 717-6398
- info@dfwkeys4cars.com
- Mon - Fri: 9:00 - 18:30
BMW 4 Series Key Replacement
BMW 4 Series keys date back to 2013 and span 2 key systems across the model’s generations — slot key / comfort access; comfort access / display key. 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 4 Series Keys
Verified key reference for the BMW 4 Series — 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 |
|---|---|---|---|---|
| 4 Series (F32/F33/F36/F82) | 2013–2020 | Slot key / Comfort Access | FEM-BDC | HU100R |
| 4 Series (G22/G23/G26) | 2021–present | Comfort Access / Display Key | BDC2 | HU100R |
Security System & Immobilizer
BMW security marched from EWS through CAS2/3/4 to FEM/BDC modules — each generation changes the programming approach.
On the 4 Series specifically we see: FEM-BDC, BDC2. 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?
- 2013–2020: Slot key / Comfort Access — FEM-BDC (HU100R)
- 2021–present: Comfort Access / Display Key — BDC2 (HU100R)
Our 4 Series 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
BMW 4 Series Key FAQ
I lost the only key to my 4 Series. 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.
Will a hardware-store copy start my 4 Series?
On transponder-era cars it opens doors and nothing else — the chip must be programmed to the immobilizer, which is what we do curbside.
How fast can you reach my 4 Series in DFW?
We dispatch the nearest mobile unit metroplex-wide, 24/7 — call (214) 717-6398 for an honest ETA.