Navigation mode, function - GF82.85-P-2012GQA

MODEL 164.1 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08 model refinement package

MODEL 164.1 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08 model refinement package

MODEL 164.8 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08

MODEL 164.8 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08

MODEL 251.0 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08

MODEL 251.0 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08

MODEL 251.1 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08

MODEL 251.1 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08

Function requirements for navigation mode

Status "Circuit 30 ON"
Auto pilot system (APS) is switched on, authorized and working correctly
No fault on global positioning system (GPS) antenna system
Signals available from at least 3 GPS satellites

GENERAL INFORMATION

The location of the vehicle, as well as the direction and distance to the destination are determined with the aid of the navigation system after entering the following information:

Country
Town name
Street
Intersection or house number (depending on availability of the data)
Town centers
ZIP code
Points of interest (POI)

After the destination and street have been entered, the following computer models can be selected:

Quickest route
Shortest route
Dynamic route

In addition, other route options can be selected:

Avoid freeway
Avoid toll road
Avoid roads requiring toll stickers
Avoid ferries or vehicle shipments
Avoid tunnels

The "Special Destinations" menu is supplemented by the "Bypassing current location", "Bypassing other Locations" and "National Destinations" submenus. POI categories are, e.g.:

Junctions
Highway service
Airport
Hotel or motel
Hospital
Parking lot
Restaurant

After entering or calling a destination location, route calculation starts.

Function sequence

The navigation system integrated into the radio and navigation unit (A2/56) uses the data entered to calculate the data required to reach the destination (destination-oriented navigation). The following subfunctions are described in separate service information:

Position finding and destination-oriented navigation, function
Route guidance through voice output, function
Display compass, with code (245) Electronic compass

The route is calculated in accordance with the options set. If observance of the options is not possible, then the options set are ignored for the sections in question and a message is displayed and signaled audibly. The set options can be displayed and changed at any time. After the calculation, the route is indicated by arrow symbols on the display of the radio and navigation unit and in the instrument cluster (A1). An acoustic announcement is then made, saying "The route is calculated".

If the vehicle is no longer moving on the pre-calculated route, then the route is recalculated. If the recalculated values are plausible for the navigation system, then the modified route is displayed. An alternative route is offered under dynamic route guidance if there is a traffic jam or a road block on the calculated route.

The system can be activated or deactivated or the destination and street can be entered using the following components:

Control panels on the radio and navigation unit
Voice control system (VCS [SBS]), with code (511) Audio 50 APS with DVD changer

The control signals are processed internally for direct entries via the operating panels on the radio and navigation unit.

The voice input for the voice control system, with code (511) Audio 50 APS with DVD changer, is performed by means of the hands-free system microphone group (A67b1). The spoken word is converted into an electrical signal via the hands-free system microphone group and then forwarded to the radio and navigation unit via a direct line.

Electrical function diagram for navigation mode (APS), function	Model 164	PE82.61-P-2054-97MAA
	Model 251	PE82.61-P-2054-97RAA
Position finding and destination-oriented navigation, function		GF82.61-P-2010GQA
Route guidance through voice output, function		GF82.61-P-2011GQA
Display compass, function	With code (245) Electronic compass	GF54.30-P-2021GQ