Acura 2010 RL Owner's Manual page 17

Protecting Adults and Teens
When the trunk is not tightly closed,
the ''TRUNK OPEN'' indicator will
come on.
14
When one or more doors and the
trunk lid are not tightly closed, the
corresponding indicator for each
condition and the ''DOOR & TRUNK
OPEN'' indicator will come on.
2010 RL
Locking the doors reduces the
chance of someone being thrown out
of the vehicle during a crash, and it
helps prevent passengers from
accidentally opening a door and
falling out.
Locking the doors also helps prevent
an outsider from unexpectedly
opening a door when you come to a
stop.
See page 153 for how to lock the
doors.