Tamper-proof lock
WARNING: This page is about a different car, the 2008 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.
The vehicle may only be locked and unlocked consecutively a maximum of 8 times. After this, the tamper-proof lock is activated.
Operation is disabled for 10 seconds. The tamper-proof lock is deactivated completely after 5 minutes. Once again, the vehicle may then only be locked and unlocked consecutively a maximum of 8 times.