Use the emergency key if the trunk can no longer be unlocked with the key or KEYLESS-GO. Note: The anti-theft alarm signal is triggered if you unlock the trunk with the emergency key. There are several options to stop the alarm:
Legend Trunk lock
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Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual > System settings : Time and date
Setting the time and date automatically Multimedia system: → System → Time and Date Deactivate Manual Time Adjustment. The time and date are set automatically for the selected time zone and summer time option. The correct time is required for the following functions: Route guidance with time-dep ...