Navigation mode, function

Navigation CD drive

A35/11

A34/6

A2/6

A2/13

B25

A2/49a1

A1

N80

MFL

D2B

A35/17

Diagnosis

Radio tuner

Central computer

X11/4

Navigation computer with gyro sensor and GPS control unit

Audio signal processing

A2/49a2

N47-5

L6/1

L6/2

A2/5

CAN-B

N93

CAN-C

A40/3

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

D2B Digital data bus

GPS Global positioning system

MFL Multifunction steering wheel

A1 Instrument cluster

A2/5 Antenna splitter

A2/6 CD player with changer (in trunk)

B25 Hands-free system microphone

L6/1 Left front rpm sensor

L6/2 Right front rpm sensor

N47-5 ESP, SPS and BAS control unit

N80 Steering column module

N93 Central gateway control unit

X11/4 Data link connector

A2/13 Sound amplifier

A2/49 a1 Telephone antenna

A2/49a2 GPS antenna

A34/6 Portable CTEL

A35/11 Voice control system control unit

A35/17 D2B telephone and TELE AID transmitter/receiver

A40/3 COMAND operating, display and control unit

DVD drive

N93/1

N41/1

A2/6

A1

N80

MFL

MOST

A2/13

A40/3

Central computer

Audio signal processing

N47-5

L6/1

L6/2

CAN-C

A35/11

CAN-B

N93

CAN-B

A2/49a2

A2/5

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

MOST Media Oriented System Transport

MFL Multifunction steering wheel

A1 Instrument cluster

A2/5 Antenna splitter

L6/1 Left front rpm sensor

L6/2 Right front rpm sensor

N47-5 ESP, SPS and BAS control unit

N80 Steering column module

N93 Central gateway control unit

N93/1 Audio gateway control unit

A2/6 CD changer (in trunk)

A2/13 Sound amplifier

A2/49a2 GPS antenna

A35/11 Voice control system control unit

A40/3 COMAND operating, display and control unit

 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.

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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.

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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.

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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.

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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.