Honda 2003 Civic Si Owner's Manual page 75

Power Door Locks
LOCK TAB
Each door has a lock tab on the top.
When you push down the lock tab on
the driver's door, both doors and the
hatch lock. When you push down the
lock tab on the passenger's door,
only that door locks.
MASTER DOOR LOCK SWITCH
The driver's door also has a master
door lock switch. Push the switch
down to lock both doors and the
hatch, and up to unlock them.
To lock the driver's door when
exiting the vehicle, pull either the
inside or outside door handle, then
push down the lock tab or the master
door lock switch. To lock the
passenger's door, push down the
lock tab and close the door.
Keys and Locks
If the key is in the ignition switch
with the driver's door open, the
master door lock switch is disabled.
The doors will still lock if you pull
one of the handles and push down
the lock tab.
When you lock the driver's door with
the key, both doors and the hatch
lock. Unlocking the driver's door
with the key unlocks only that door.
Using the key in the passenger's
door locks and unlocks only that
door.
Instruments and Controls
75