FOREWORD [CAR-NAVIGATION SYSTEM]

NO.1 CAR-NAVIGATION SYSTEM DOES NOT START OPERATION [CAR-NAVIGATION SYSTEM]

NO.2 CAR-NAVIGATION SYSTEM DOES NOT OPERATION [CAR-NAVIGATION SYSTEM]

NO.3 VEHICLE POSITION DEVIATES FROM THE ROUTE MAP [CAR-NAVIGATION SYSTEM]

NO.4 NO VOICE NAVIGATION [CAR-NAVIGATION SYSTEM]

NO.5 DISPLAY SCREEN DOES NOT CHANGE TO THE NIGHT MODE [CAR-NAVIGATION SYSTEM]