The position and movements of the vehicle are recorded by the navigation system's sensors. The distance travelled is determined by the vehicle speedometer signal, rotary motion in bends is detected by a gyro sensor (inertial compass). The position is determined via the GPS (Global Positioning System) satellites. The position can be calculated within a range of approx. 10 m by comparing the sensor signals with the digital map on the navigation CD.

In principle, the system is functional with poor GPS reception, although the accuracy of the positioning may be impaired by poor or interrupted GPS reception or errors can occur in the determination of the position, which result in incorrect position reporting.

Start-up characteristics

If the vehicle is parked for longer periods of time, the satellites continue their orbit. After the ignition is switched on, it may take several minutes until the navigation system receives signals from sufficient satellites for evaluation. During the start-up sequence, it is possible that the navigation system will report: "You are leaving the digitised area". The navigation system assumes that the vehicle is not located on a digitised road. If other roads exist in this area, the navigation system may issue incorrect messages. The navigation system assumes that the vehicle is located on another road.

Comments

After transport of the vehicle by train or ferry, the navigation system may require a few minutes for exact positioning. After disconnecting the vehicle battery, up to 15 minutes may be required for exact positioning. For this, the vehicle must be outdoors and the system must be switched on in order to receive transmissions from the GPS satellites.

To be able to plan a route to a destination address, the navigation system not only requires the current position of the vehicle but also a digital road map containing the destination address itself and the roads leading to the destination address. This digital road map is on the map CD which you insert into the navigation computer.

The road system is stored on the map CD as a line model, i.e. even large junctions have only one focal point that is approached by all roads in point-to-point fashion. Thus the navigation system indicates the distance to the turn-off point as the distance to the centre of the junction. This is why the distances for motorway exits indicated on road signs may not agree with those of the navigation system. The road signs indicate the distance to the beginning of the exit.

Areas with limited road information

In some areas, not all of the information on a road is available on the map CD. Thus, for example, turn-off prohibitions, information on the direction of travel in a one-way street or prohibited entry into a pedestrian zone may be missing. The navigation system will display a warning if you drive into such an area. Local traffic laws always take precedence over navigation system instructions. Always observe the road signs and motor vehicle traffic regulations.

Topicality of the map CD

Roughly 10 - 15% of the road system characteristics change each year. Due to these constantly changing traffic conditions (construction of new roads, traffic calming, etc.) we cannot guarantee that the digital road map will be in 100 % agreement with existing traffic conditions. We recommend that you always use the most current version of the map CD for navigation. More information can be found under "CIQ - Intelligent Content On Demand", section 5.

With this new generation navigation radio unit, you may insert a map CD, plan your route, then insert an audio or MP3 CD and the system will still guide you to your intended destination. The navigation computer saves the road system in a defined area around the planned route (corridor) in its main memory. Within this corridor, the map CD does not have to be inserted in order for the navigation to function. As soon as you leave this corridor, a message will appear automatically, prompting you to insert the map CD so that the navigation computer can reload the data required for a new route. What is meant by "corridor"?

The navigation system plans a route and then loads a "belt" around the planned route (the corridor) as map data from the map CD into the main memory.

Functional restrictions in corridor mode

Please note that some navigation system functions are not or are only partially available when the map CD (Route ＆ Sound mode) is not inserted (e.g. dynamic route planning, alternative route, route selection, traffic info outside of the planned route)

It is only possible to load stored addresses if they are located within the corridor. Route planning is only possible with roads located within the corridor. Even if a destination address is located within the corridor and can be entered as a destination, it may not be possible to plan a route to that destination. In this case, please insert the map CD.

TMC traffic information is only available for the map region stored in the corridor. Travel info and POIs (Points of Interest) can only be called up using the map CD. Some C-IQ functions (in particular code entry) are only possible when the map CD is inserted.

As soon as you insert the map CD, these functions are available again.

Leaving the corridor

If you leave the corridor, e.g. if you are not following the planned route, the navigation system will attempt to guide you back into the corridor. The directional arrow and the distance to the planned route will be displayed.

If you continue travelling away from the corridor, the navigation system will display only the directional arrow and the distance to the destination.

In this case, please insert the map CD so that the navigation system can plan a new route to your destination.

During guidance:

From any other menu:

The Navigation menu provides the following options:

Inserting a CD

Insert the CD (printed side up) into the drive, in the case of Audio / MP3 CD'S, playbak starts automatically.

Removing a CD

Press the button eject and carefully remove the CD.

Inserting and removing an USB stick (thumb drive)

Insert the USB stick into the USB hub. The USB hub is located in the console (terminal box), in the case of MP3, WMA or OGG files on the USB stick, playback starts automatically.

Connecting external audio equipment to the AUX input

Connect the line-out or headphone output of the external audio player to the AUX socket (terminal box) usig a 3.5mm Stereo plug.

Switching on/off

Press the left rotary to switch the unit on or off.

Switching on and off with the ignition key

If the unit is switched on, it can be switched off by turning the ignition key to the "Off" position.

Turn the ignition key to "ACC" or "ON" position to switch on the unit again.

Automatic switch off

If the unit was turned on using the left rotary with the ignition in "OFF" position, it automatically switches itself off after one hour.