Ford Workshop Service and Repair Manuals

DVD navigation system with touchscreen

The navigation system provides the driver with visual (direction arrows) and audio (voice) guidance for a selected route. It will also visually count down the distance to the next junction in metres.

The DVD navigation system with touch screen has the following features:

• 7" colour touchscreen (16:9)
• External navigation computer with DVD drive
• Rapid route calculation
• Integrated audio unit with MP3-compatible compact disc player
• Traffic Message Channel (TMC)
• Intergrated controls for vehicle climate control

The DVD navigation system also has provision for:

• External CD changer
• Rear seat entertainment system
• Hands free telephone system
• Cableless data transmissions (bluetooth)

The navigation system display module provides the control interface between the driver and the audio system, navigation system and the vehicle interior heating and air conditioning functions.

Control of the navigation and audio functions is by means of a number of pushbuttons above and below the touchscreen and a rotary/pushbutton. Further control is achieved from the menus on the touchscreen.

The navigation system module touchscreen has an anti-reflective coating to aid visual properties. Controls for screen brightness and contrast are provided, but the system automatically changes the screen settings to night mode when the vehicle lights are switched on.

Navigation system display module

CAUTION:Care must be taken that no sharp objects come into contact with the navigation system control module. Failure to follow this instruction may result in damage to the navigation system control module touch screen.

NOTE:If a new navigation system control module is installed. The new module will require configuration, using WDS, programmable module routine.

The units that make up the navigation system display module, must be removed from the instrument panel center console as one unit. Once removed the individual components that make up the navigation system display module can be serviced separately.

Navigation system DVD unit

The navigation system DVD unit has the following functions.

• Navigation computer
• GPS decoder
• DVD drive
• Yaw rate sensor
• Communication interface

NOTE:If a new navigation system DVD unit is installed. The new module will require configuration, using WDS, programmable module routine.

The navigation system DVD unit is installed in the passenger glove compartment.

Data required to calculate the route for a programmed destination is read from a DVD in the DVD drive. This data is processed by the built in navigation computer which then outputs the information via a graphics processor to the navigation display module.

The navigation system is equipped with a last route power off memory function. This means that if the ignition is switched off, the last route selected will be reselected when the ignition is switched back on.

Navigation system antenna and antenna base

The navigation system GPS signal is received from orbiting satellites via the GPS receiver which forms part of the antenna mast base. The advantage of the GPS receiver being on the external surface of the vehicle, is that no obstruction to reception occurs from vehicle structure.

Navigation system antenna cable routing

To gain access to the navigation system antenna cable, the steering column, headliner trim panel and the navigation system display module must be removed.

CAUTION:If a new navigation system antenna cable is to be installed, it must be installed to the same routing as when removed. Failure to follow this instruction may result in damage to the antenna cable causing incorrect navigation operation.

Navigation system DVD antenna cable routing

To gain access to the navigation system DVD antenna cable, the passenger glove compartment must be removed.

CAUTION:If a new navigation system DVD antenna cable is to be installed, it must be installed to the same routing as when removed. Failure to follow this instruction may result in damage to the DVD antenna cable causing incorrect navigation operation.

Service instructions

NOTE:Follow the instructions in the service literature when removing and installing components.

After installation a unique 4-digit keycode must be input via the navigation system touch-screen.

A unique vehicle identification number with up to 16 characters can be stored via the navigation display module touch screen.

4 special tool keys, tool number GV3301, must be used to remove the navigation display module.

DVD navigation system with touchscreen - vehicles built up to 01/2008

NOTE:The CD drive only takes a single CD. If the system is equipped with a 6-CD changer, this will be located under the front passenger seat.

The system functions can be operated via the touchscreen of the navigation system or via the remote control buttons on the steering wheel.

Principle of Operation

The navigation system provides audible and visual route guidance information to enable the driver to reach a desired destination. The system allows the driver to differentiate route recommendations according to personal settings. Directions to hospitals, museums, monuments and hotels are also available. The computer uses map information stored on a DVD to determine the best route for the journey and provide the driver with details of directions and approaching junctions.

The system used to calculate the current position of the vehicle is called the Global Positioning System (GPS). The system utilizes satellites which are owned by the United States Department of Defense (DoD). A total of 24 satellites orbit the earth every 12 hours at a height of 20,000 km (12500 miles), and between 5 and 11 of these satellites can be seen from a single point at any given time. The orbits are tilted to the earth's equator by 55 degrees to ensure coverage of polar regions. Each satellite transmits radio signals to provide information about the satellite's position, for example the latitude, longitude, altitude, almanac data and an accurate time signal generated by an on-board atomic clock. Each satellite contains four atomic clocks. Each GPS satellite transmits its encoded signal towards the earth using the civilian frequency of 1575.42 MHz. The coding contains information concerning the satellite's position and the time when the signal was transmitted. The signals transmitted from the satellites reach the earth at almost the speed of light and are received by the GPS antenna.

As the various satellites are at different distances from the ground location, the vehicle's position on the ground is determined on the basis of the transmission time of the signals. This is performed by the vehicle's navigation receiver, which performs a comparison (correlation) of the different signals.

The vehicle needs to receive data from at least four different satellites to give a three dimensional fix on its current position. Three satellites are required to determine the position of the GPS receiver (within the vehicle) and the fourth signal is used to calculate the distance (altitude) between the ground position and the satellites.

As the vehicle moves, this information is continually being updated. The computer determines which satellites are 'visible' to the system and their current position and relationship to each other. Using this information the computer can account for positional deviations of the satellites and compensate to enhance the accuracy of the navigation system.

The Global Positioning System (GPS) signal is also known as the Precision Positioning Signal (PPS). PPS predictable accuracy is:

• 22 meters horizontal accuracy
• 27.7 meters vertical accuracy
• 200 ns time accuracy

The navigation systems participate on the medium-speed CAN bus and operate with an internal amplifier which has direct outputs to the system loudspeakers. They are available with a single CD player.

The navigation system receives GPS (global positioning system) information via the GPS antenna. The GPS signals are used by the navigation computer to calculate the vehicles position. Once the driver has entered a destination, the navigation computer can calculate a route, based on the driver's pre-determined preferences or the default settings in the navigation computer.

Navigation System

The navigation system is always supplied in conjunction with a level 3 instrument cluster. A 6-CD changer is available for the system which is located underneath the front passenger's seat.

The directional arrows of the navigation system are displayed in the driver information system analogously to a navigation display.

Integrated navigation computer

The navigation computer contains the DVD drive, which reads the map DVDs.

The navigation system contains the following modules:

• GPS receiver
• Traffic Message Channel (TMC) receiver

The GPS receiver receives information from between 1 and 8 satellites at any one time. This information is received from the GPS antenna. The built in GPS receiver is used for calculating the position (i.e. latitude, longitude and height), direction and speed.

The navigation computer contains a solid state piezo gyro which measures the motion of the vehicle around its vertical axis. The gyro operates on the principle known as the Coriolis force. The Coriolis force is the force that appears to accelerate a body moving away from its rotational axis against the direction of rotation of the axis.

To calculate the vehicle's current position, direction and speed, the navigation computer uses:

• Vehicle speed signals sent by the ABS control module on the high-speed CAN bus to the MS CAN,
• and signals transmitted from the GPS antenna and the gyro sensor.

For certain European markets the navigation computer incorporates the Traffic Message Channel (TMC) receiver. The TMC receiver decodes TMC data. The navigation computer then displays this information on the touchscreen display and can re-route the navigation guidance system to avoid traffic congestion.

The TMC data is received through the electric FM antenna.

The navigation computer uses non-volatile memory to store settings and configuration information when it is powered down. This process takes place just after the computer turns off.

Touch Screen Display

The touch screen display is located in the center of the instrument panel and is the dedicated interface with the navigation system. It is a touch-sensitive 7-inch liquid crystal display with a resolution of 480 x 240 pixels.

DVD drive

NOTE:The integrated DVD drive is not suitable for playing DVD films. Access to this drive is only permitted to authorized repairers.

Data required to calculate the route for a programmed destination are read from a DVD in the integrated DVD drive. This data is processed by the built in navigation computer which then outputs the information via a graphics processor to the navigation display module.

The navigation system is equipped with a last route power off memory function. This means that if the ignition is switched off, the last route selected will be reselected provided the ignition is switched back on within 15 minutes.

Entering keycode

CAUTION:On vehicles with a DVD navigation system it is very important that the touchscreen is never touched with any sharp objects, as this could damage the screen.

The navigation system is protected against theft via a keycode.

The keycode is a 4-digit numerical code which is derived from the serial number of the system during production and is saved in the flash memory. It cannot be changed by the user.

On new devices, the keycode mechanism is deactivated by default. It can be activated with the Ford diagnostic unit. Once the keycode mechanism has been activated it cannot be deactivated again.

If the user makes three incorrect attempts at entering the keycode then the ignition key will need to be left in the ignition in the ON position for one hour in order to obtain three new attempts at entering the keycode.

Map Updates - Navigation System - Vehicles with DVD Navigation System with Touchscreen

NOTE:Only trained Ford technicians are permitted to perform map updates.

In order to perform the update, the front cover needs to be taken off to gain access to the road data DVD for the navigation system.