KAFAS 4 RESET – STEP-BY-STEP GUIDE
KAFAS 4 (Kamera Fahrerassistenz System) is the front camera used on modern BMWs for Lane-Keep Assist, Traffic-Sign Recognition, High-Beam Assist and more.
After a windshield swap, coding error or rejected FSC keys the module may lock itself.
This guide shows how to wipe NVM / FSC and restart the unit so every camera-based assistant comes back online.
Download contents
- KAFASG11.prg – Tool32 script for G-Series KAFAS 4 (e.g. G11/G30/G01).
Pre-requisites
- Stable 13.8 V power supply
- BMW ICOM or ENET cable
- Latest versions of Tool32 and E-Sys / ISTA
A. Units with one CAFD
- Open Tool32 and load KAFASG11.prg.
- Navigate to Steuer routine → Argument wizard.
- Choose job nvm_restore and press Run job.
- After completion, execute Steuergerät reset to reboot the module.
B. Units with two CAFDs
- Launch E-Sys ➜ FSC Comfort Mode.
- Diagnostic address: 0x5D.
- For every “Rejected FSC” enter Application ID (e.g. 0x11F) & Index (e.g. 0x001) → Deactivate FSC.
- Repeat for all rejected keys.
- In TSL-Update → Expert Mode read MSD/CSM status and hit Update All.
- Confirm that System Initialisation is successful.
Recommended aftercare
Flash the camera with your VIN to prevent future FSC rejections, then calibrate KAFAS in ISTA.
Result
- Lane-keep, TSR, HBA & other camera features fully operational
- No more “Driver Assist Restricted” warnings
- Module ready for factory calibration
Disclaimer: Educational use only. You perform all actions at your own risk; the author accepts no liability.
