2006 Lincoln Navigator Owner Guide 2nd Printing - Page 291

Driving control in the message center allows the driver to disable the extended rear park aid only when the ignition is ON, and the gear selector is in R (Reverse). Always keep the sensors (located on the rear bumper/fascia) free from snow, ice and large accumulations of dirt (do not clean the sensors with sharp objects). 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. CONTROL TRAC FOUR-WHEEL DRIVE (4X4) OPERATION (IF EQUIPPED) For important information regarding safe operation of this type of vehicle, see Preparing to drive your vehicle in this chapter. If equipped with the Control Trac 4x4 System, and 4L (4x4 LOW) is selected while the vehicle is moving, the system will not engage. This is normal and should be no reason for concern. Before 4L (4x4 LOW) can be engaged, the vehicle must be brought to a complete stop, the brake pedal depressed and the transmission placed in N (Neutral). The vehicle should not be operated in 4H (4x4 HIGH) or 4L (4x4 LOW) on dry pavement. Doing so could result in difficult disengagement of the transfer case, increased tire wear, decreased fuel economy and may damage driveline components. Your 4x4 features the heavy-duty Control Trac system which includes a computer-operated transfer case. This unique system is interactive with the road, continually monitoring and adjusting torque delivery to the front and rear wheels to optimize vehicle control. System indicator lights The Control Trac system indicator lights illuminate only under the following conditions. If these lights illuminate when driving in 2H or A4WD, contact your authorized dealer as soon as possible. • 4X4 HIGH - momentarily 4x4 illuminates when the vehicle is HIGH started. Illuminates when 4H is selected. 291 2006 Navigator (nav) Owners Guide (post-2002-fmt) USA (fus)