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First you have to locate the navigation DVD player itself. The navigation system DVD players are either under the front seats or behind the navigation screen. All you have to do to update the GPS system is remove the old GPS disc and insert the new GPS disc. The NAV system will update itself. About the only thing you may have to do is reset the region the Navigation system shows. Most of the time you dont have to do anything. It will do all the updates itself.
1 Once the speed and direction are set you can leave the screen with escape and use the unit similar to other Garmin receivers in simulation mode. 2  You can return to the GPS status screen to make adjusts in speed or direction. 3  Turn off the unit or select use outdoors to go back to regular navigation. Select the GPS status screen. 2  You can now use the up/down arrow keys to set speed and the left/right arrow keys to set the direction. 3  Observe the direction by watching a small circle at the edge of the large status circle.