2009 Ford Expedition EL Owner Guide 2nd Printing (Spanish) - Page 769

Driving Audible Warnings Distance to Object Warning Speed above 2.5 mph (4 km/h) up to 1.6 feet (.5 meters) Solid 1.6 feet (.5 meters) to 3.1 feet (1 meter) Fast beep 3.1 feet (1 meter) to 5.7 feet (1.8 meters) Medium/fast beep 5.7 feet (1.8 meters) to 9 feet Medium beep (2.8 meters) 9 feet (2.8 meters) to 13 feet (4 meters) Medium/slow beep 13 feet (4 meters) to 19.6 feet (6 meters) Slow beep Speed below 2.5 mph (4 km/h) up to 1.4 feet (.4 meters) Solid 1.4 feet (.4 meters) to 3 feet (.9 meters) Fast beep 3 feet (.9 meters) to 4.5 feet (1.4 meters) Medium beep 4.5 feet (1.4 meters) to 6.3 feet Medium/slow beep (1.9 meters) 6.3 feet (1.9 meters) to 8.7 feet Slow beep (2.6 meters) 8.7 feet (2.6 meters) to 16.4 feet No sound (5 meters) The reverse sensing system is automatically enabled when the gear selector is placed in R (Reverse) and the ignition is on. A control in the message center allows the driver to disable the system, refer to Message center in the Driver Controls chapter for more information. The message center will indicate the system is off and will not allow the driver to switch the system on to indicate a failure of the reverse sensing system. The radar sensor is located behind the rear bumper/fascia. Always keep the rear bumper/fascia free from snow, ice and large accumulations of dirt. These elements may cause the system to operate inaccurately. If the vehicle sustains damage to the rear bumper/fascia, leaving it misaligned or bent, the sensing zone may be altered causing inaccurate measurement of obstacles or false alarms. 306 2009 Expedition (exd) Owners Guide, 2nd Printing USA (fus)