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

MODEL 215, 220 with CODE (352) COMAND operating and display system except CODE (498) Japan version

Fig 1: Navigation Mode Function Diagram - With Code (810) Sound System Up To 31.8.03

Block diagram for COMAND navigation system, shown on model 220 with code (810) Sound system and code (854) MB standard CTEL up to 31.8.03

Fig 2: Navigation Mode Function Diagram - Shown On Model 220 With Code (810) Sound System As Of 1.9.03

Block diagram for COMAND navigation system, shown on model 220 with code (810) Sound system as of 1.9.03

On vehicles as of 1.9.03, the navigation processor (N41/1) is installed externally in the luggage compartment as a separate control unit and integrated into the Media Oriented System Transport (MOST). Thus, all optical and acoustic information is transmitted via this fiber optical cable.

On vehicles as of 1.9.03, the audio gateway control unit (N93/1) is also installed as an interface between the Controller Area Network bus class B (interior) (CAN-B) and the Media MOST. The audio signals are then sent to the audio gateway control unit (N93/1) output via the vehicle speakers.

With the aid of the COMAND navigation system, the location and the orientation of the vehicle, the direction of travel and the distance to the destination (with specified destination) are determined. Subsequently, the measures that are required to reach the destination (navigation) are initiated.

The navigation system is activated by pressing the "NAVI" button on the control unit.

A navigation processor with CD drive for the digital map data is integrated in the COMAND operating, display and control unit (A40/3).

After activation of the navigation system, the following note appears on the display:

Up to 31.5.01: "Please insert Navi CD"
As of 1.6.01: "Please insert Navi CD, type DX"
As of 1.9.03: "Please insert Navi DVD"

As of 1.9.02 it is possible to playback audio CDs in the navigation CD drive after the loading process and during navigation.

Destination entry

The destination is entered menu-assisted on the COMAND operating, display and control unit (A40/3) and is processed by the navigation processor.

The destination is entered menu-assisted on the display of the COMAND operating, display and control unit (A40/3) and is processed by the navigation processor. The COMAND system offers the following possibilities for destination entry:

Address
Destination memory
Destination with map
Special destinations (e.g. railway station, airport etc.)
Travel guide (as of 1.6.01)
Last destinations

It is also possible to enter an intermediate destination (e.g. from Hanover to Stuttgart via Cologne).

The entry is made menu-assisted on the display of the COMAND operating, display and control unit (A40/3).

Parts of the route can also be excluded from the calculation. This may be useful for avoiding heavily-used or toll roads.

Dynamic supplementation

This function is realized with the manual entry of the destination. During entry, the letters for the destination to be entered are supplemented using an existing list during dynamic supplementation. The supplemented characters have a black background. Deleting can be accomplished character by character.

Predictive text input (as of 1.6.01)

During entry, the letters for the destination to be entered are supplemented using an existing list during dynamic supplementation.

The predictive text input feature refers to the entry of the destination and street during navigation.

Position finding

COMAND continuously calculates the position of the vehicle using the following methods:

Basic position finding (dead reckoning)
Map-supported map matching
GPS position finding

The navigation processor calculates the most probable position by continuously comparing the results returned by these 3 methods.

Route calculation

The route is calculated in the navigation processor in accordance with the specified destination. If the vehicle deviates from the route a new calculation is made. There are the following options to calculate the route:

The fasted route
The shortest route
A dynamic route
A user-defined route

If the vehicle is equipped with a dynamic navigation system (standard as of 1.6.00), the current traffic situation (e.g. road works, traffic jam) also influences the route calculation. The calculated route is stored in the navigation processor.

Route guidance

After the navigation processor has calculated the route, navigation is started.

The following 3 types of display can be selected for graphic navigation:

Symbolic depiction (system of navigation symbols)
Map display
Mixture of map and symbol display

It is possible to change arbitrarily between the 3 types of presentation. The destination-finding system is also supported by voice output from the vehicle loudspeakers.

	Continuous position finding, function	except CODE (494) USA version	GF82.61-P-2002C
	Voice output, function	except CODE (494) USA version	GF82.85-P-3001A