Buick 2005 LeSabre Owner's Manual page 79

Trunk Lock Release
To unlock the trunk from the outside, insert the master
key and turn it clockwise.
Remote Trunk Release Lockout
Push this button to open the trunk. The transaxle must
be in PARK (P) or NEUTRAL (N) for the remote
trunk release button to work.
To lock the trunk from inside your vehicle, insert the
master key and turn it clockwise to LOCK. The VALET
key will not work in this procedure.
Trunk Security Override
The remote keyless entry transmitter will unlock the
trunk even if the trunk release lockout switch is in LOCK.
The TRUNK release button
is located on the driver's
door trim map pocket.
Emergency Trunk Release Handle
Notice: Using the emergency trunk release handle
as a tie-down or anchor point when securing
items in the trunk may damage it. Use the
emergency trunk release handle only to help you
open the trunk lid.
There is a glow-in-the-dark emergency trunk release
handle located near the trunk latch. This handle will glow
following exposure to light. Pull the release handle up
to open the trunk from the inside.
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