Why can't BMW cars lock automatically?
2 Answers
BMW's door locks not automatically locking indicate a malfunction in the automatic locking feature, which requires reconfiguring the automatic locking function for the BMW 5 Series. Setting up BMW's automatic locking: Toggle the button in the middle of the turn signal until you see a checkmark under a key icon. Then press the BC button. After entering, select the 'ON with arrow' option and press BC to complete the setup. Purpose of the automatic locking feature: It is designed for theft prevention, allowing the doors to lock quickly after driving to prevent door-pulling robberies during traffic jams or at red lights, providing a certain level of security. BMW is a German automotive brand under the BMW Group, offering models such as the i, X, Z, and pure number series (1, 2, 3, etc.), along with the M series, which are enhanced versions based on these models.
I've been repairing cars for over a decade and frequently encounter BMWs that fail to auto-lock, primarily due to key signal issues. A dead key battery can't transmit the lock command; door sensors might not detect the closed position, such as when rear doors aren't properly shut; occasional system software glitches may require updates or resets; environmental interference like nearby strong signal devices can also block the signal. I recommend owners regularly replace key batteries, ensure all doors are tightly closed, and visit a repair shop for electronic system scans when necessary. Though seemingly minor, this affects anti-theft security—don't let it escalate into a major issue.
