Mercury 2009 Grand Marquis Owner's Manual page 79

4. Press 5 • 6 (or 7 • 8, or 9 • 0, or wait five seconds) to store the third
personal code.
5. The doors will again lock then unlock to confirm programming of the
new code.
Tips:
• Do not set a code that uses five of the same number.
• Do not use five numbers in sequential order.
• The factory set code will work even if you have set your own personal
code.
Erasing personal code
To erase all of the personal entry codes programmed to a vehicle:
1. Enter the factory-set code.
2. Press and release 1 • 2 within five seconds of step 1.
3. Press and hold 1 • 2 for two seconds. All of the vehicle doors will lock
and then unlock to confirm erasure.
Unlocking the doors and releasing the trunk with the keyless entry
system
To unlock the driver door, enter either the factory-set code or personal
code (each digit pressed within five seconds of prior digit). The interior
lamps will illuminate.
• To unlock all doors, enter the factory-set code or personal code
(driver door unlocks) and press 3 • 4 within five seconds.
• To release the trunk, enter the factory-set code or personal code
(driver door unlocks) and press 5 • 6 within five seconds.
After the factory-set code or personal code has been entered, you can
unlock all doors (press 3 • 4) and release the trunk (press 5 • 6) as
long as the controls are pressed within five seconds of each other.
Locking doors with the keyless entry system
It is not necessary to enter the factory-set code prior to locking all doors.
To lock the doors, press 7 • 8 and press 9 • 0 at the same time.
Note: The doors will not lock if the driver door is ajar.
Anti-scan feature
If the wrong code has been entered seven times (35 consecutive button
presses), the keypad will go into an anti-scan mode. This mode disables
the keypad for one minute and the keypad lamp will flash.
2009 Grand Marquis (grn)
Owners Guide, 1st Printing
USA (fus)
Locks and Security
79