2006 Lincoln Navigator Owner Guide 2nd Printing - Page 105

Entertainment Systems Principles of GPS (global positioning system) operation Your system directs you based on information derived from global positioning satellites, road maps stored on the DVD, sensors in your vehicle and the desired destination. The system compiles all necessary information to guide you to your selected destination. Space satellites determine the vehicle's current location and transmit position and time signals to your car. If the vehicle has been parked for a long period of time, the navigation function may be temporarily unresponsive. The navigation system will operate reliably again once GPS reception is available for a few minutes. Limited GPS reception System performance may be adversely affected if GPS reception is interrupted or interference occurs over a distance of several miles. The following are possible causes for GPS reception being interrupted. If the vehicle is: • in multi-story parking garages • in tunnels and under bridges • inside or in between buildings • by forests or tree-lined avenues • in heavy rain showers and thunderstorms • in valleys and in mountainous regions • roads under cliffs Ensure that you do not have any metal objects on the rear parcel shelf. If your windows are tinted, ensure that you use non-metal tinting instead of metal oxide tinting. Both of these factors can interrupt GPS reception. Cleaning the display Do not spray cleaning fluid directly onto the unit. Instead, spray onto a soft cloth and gently wipe the unit. Only recommended products should be used. • Recommended products- Rubbing alcohol based cleaner (i.e., methyl alcohol) or a damp clean cloth. • Not harmful but not recommended- ammonia cleaner, neutral detergent. • Harmful to system and not recommended- acid cleaner, alkali cleaner, benzene cleaner. Do not clean any part of the system with benzene, paint thinner or any other solvent. 105 2006 Navigator (nav) Owners Guide (post-2002-fmt) USA (fus)