FORD 2003 F-550 v.1 - Manual (Page 56)

KEYS
The keyoperates all locks on your vehicle. In case of loss, replacement
keys are available from your dealer.
You should always carrya second keywith you in a safe place in case
you require it in an emergency.
POWER DOOR LOCKS (IF EQUIPPED)
Press control to unlock all doors.
Note: When Perimeter Alarm is
armed, this switch is disabled.
Press control to lock all doors.
Smart locks (if equipped)
This feature prevents you from locking yourself out of the vehicle if your
keyis still in the ignition.
When you open the driver’s door and you lock the vehicle with the
power door locks, all the doors will lock, then the driver’s door will
automatically unlock reminding you that your key is still in the ignition.
The vehicle can still be locked, with the keyin the ignition, using the
manual lock button on the door, locking the driver’s door with a key, or
using the lock button on the remote entrytransmitter (if equipped).
Locks and Security
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