Mercury 2009 Grand Marquis Owner's Manual page 75

Car finder
Press twice within three seconds. The horn will chirp and the
parklamps/tail lamps will flash. It is recommended that this method be
used to locate your vehicle, rather than using the panic alarm.
Sounding a panic alarm
Press on the remote transmitter to activate the alarm.
Note: The panic alarm only works with the ignition in the off position.
Press a second time to deactivate the alarm. You may also deactivate
the alarm by turning the ignition to the on position.
Opening the trunk
Press once to open the trunk.
• Ensure that the trunk is closed and latched before driving your
vehicle. Failure to properly latch the trunk may cause objects to fall
out or block the driver's rear view.
This feature will not work with a vehicle speed greater than 3 mph
(5 km/h) if the ignition is in the accessory or on position.
Replacing the battery
The remote entry transmitter uses one coin type three-volt lithium
battery CR2032 or equivalent.
To replace the battery:
1. Twist a thin coin between the two
halves of the remote entry
transmitter near the key ring. DO
NOT TAKE THE RUBBER COVER
AND CIRCUIT BOARD OFF THE
FRONT HOUSING OF THE
REMOTE ENTRY TRANSMITTER.
2009 Grand Marquis (grn)
Owners Guide, 1st Printing
USA (fus)
Locks and Security
75