Hatch/Trunk Lid Lock (Hatchback); Child Proof Door Locks (Sedan) - Honda 1990 Civic Sedan Owner's Manual

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Hatch/Trunk Lid Lock
(Hatchback)
To open the hatch from outside, put the ignition key in the lock and
turn clockwise.
The hatch can be unlocked by pulling up the lever at the left side of
the driver's seat.
(Sedan)
The trunk lid can be unlocked by pulling up the lever at the left side
of the driver's seat.
To open the trunk lid from outside, put the master key in the lock
and turn clockwise. The trunk lid opener lever is lockable with the
master key.
Open
Keep the hatch/trunk lid closed while driving, to keep poisonous
carbon monoxide exhaust fumes out of the interior; prolonged
exposure can cause unconsciousness that may lead to death.

Child Proof Door Locks (Sedan)

The child proof door locks are designed to prevent accidental
opening of the rear doors. To activate the locks, push down the
lock tabs located on each door, then close the doors. When the
doors are locked in this way, they can only be opened from the
outside.
Unlock
Lock
Pull up
MASTER KEY