What Causes the BMW Driving Assistance System to Be Restricted?
2 Answers
BMW driving assistance system may be restricted due to the following reasons: Dirty camera: At night, the camera's view may be obstructed, triggering a driving assistance system restriction warning. This issue is more likely to occur if it's also raining. Camera blocked: Installing a hidden dashcam with low-quality components may block the light-sensing camera on the interior rearview mirror. Some installers may also forget to remove the sensor casing inside, leading to this problem. Additionally, a dashcam malfunction or battery drain may trigger the warning. Window tinting or vehicle wraps can also obstruct the camera's view, causing the alert. Radar blocked: The radar may be obstructed by foreign objects like tree branches or a license plate frame that blocks the radar sensor wiring. If the radar's mounting position is deformed or the radar becomes loose, recalibration may be required.
I've been driving a BMW for several years, and the issue of driving assistance system limitations is mainly due to sensors being blocked by dirt. For example, the front camera or radar may stop working after being covered by water or mud after rain, leading to system misjudgments. There are also minor software glitches, where the system freezes or programs malfunction, and sometimes restarting the vehicle can fix it. Hardware problems are common too, such as sensor aging or damage, which affects automatic braking and lane keeping—this is not safe. It's recommended to regularly clean the sensor areas, especially in poor driving environments, and not wait for warnings. If the system frequently becomes limited, go to a 4S shop for inspection immediately—don't try to fix it yourself to avoid causing more trouble. I usually make it a habit to clean the front area more thoroughly when washing the car to keep everything running smoothly.
