FORD 2011 Explorer v.3 - Manual (Page 269)

Switching the vehicle off when not in P (Park): It is recommended
that you shift into the P (Park) position before switching your vehicle
off. If you switch your vehicle off with the shifter in any position other
than P (Park), the message SHIFT TO PARK will be displayed in the
message center. If the vehicle is left in this state, your key in ignition
chime will activate when the driver door is opened, and you may drain
your vehicle’s battery. In order to avoid draining your battery, it is
recommended that you always shift to P (Park) before or immediately
after switching your vehicle off.
Absence of the intelligent access key: Once the vehicle has started,
the vehicle will remain running until being turned off by the
START/STOP button, even if the IA key is no longer found in the vehicle.
Whenever a door is opened and then closed while the vehicle is running,
the system will search for an IA key inside the vehicle and the message
center will display NO KEY DETECTED if the IA key is no longer
present. This message is a reminder that someone else in the vehicle
may have taken the IA key when exiting the vehicle. If the IA key is no
longer present in the vehicle, you will not be able to re-start your vehicle
outside of the Fast Restart time (see Fast Restart Feature above).
Note: It is important to be aware of where your IA key is located in the
vehicle, to avoid becoming stranded without an IA key.
Guarding against exhaust fumes
WARNING: If you smell exhaust fumes inside your vehicle, have
your dealer inspect your vehicle immediately. Do not drive if you
smell exhaust fumes.
Carbon monoxide is present in exhaust fumes. Take precautions to avoid
its dangerous effects.
Important ventilating information
If the engine is idling while the vehicle is stopped for a long period of
time, open the windows at least 1 inch (2.5 cm) or adjust the heating or
air conditioning to bring in fresh air.
Driving
269
2011 Explorer (exp)
Owners Guide, 4th Printing
USA (fus)