MG MG3 Owner's Handbook Manual page 135

STARTING & DRIVING
Lock Status Indicator
The indicator is used to indicate the lock status. When the
remote key or mechanical key locks the door, the indicator
will flash quickly for 10 seconds and then slow.
indicator extinguishes after the remote key or mechanical
key unlocks the door. If a mislock occurs, the indicator
will not illuminate. When the interior lock switch locks
the door, the indicator will illuminate. If the driver's door
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is closed fully but any other door or tailgate is not closed
when the interior lock switch locks the door, the indicator
will flash.
The