XDRIVE transfer case calibration on BMW 5 Diesel

It's possible to use the Carly app for some diagnostic and coding functions, but for calibrating the transfer case, it's best to start by checking the transmission fluid level and condition, as low or old fluid can trigger warning lights. If the fluid is fine, consider having a professional diagnose the issue, as it could be more complex. Let me know how it goes or if you have further questions!