Component description for COMAND controller unit - GF82.85-P-3136CEJ
MODEL 204.0/2 with CODE (527) COMAND APS with single DVD drive (with navigation) with CODE (498) Japan version as of model year 2009 up to model year 2012 /YoM 08, /model refinement package 11
MODEL 204.9 with CODE (527) COMAND APS with single DVD drive (with navigation) with CODE (498) Japan version up to model year 2013 /model refinement package 12
Shown on model 204.0
Location
The COMAND controller unit is installed into the center console.
Task
The COMAND controller unit fulfills the following tasks:
- Central operating unit for the entertainment and communication systems integrated into the vehicle
- Reading in the controls and input signals
- Evaluation of input factors
- Activation of output media and system components
Central operating unit for the entertainment and communication systems integrated into the vehicle
The COMAND controller unit provides the user with a structured and uniform interface for the following system components:
- Navigation (map navigation with hard disk as data memory)
- Audio (radio, CD, DVD, Personal Computer Memory Card International Association (PCMCIA) card (MP3 also), Music Register, AUX)
- Telephone (ComTel with phone, address book, email and FM multiplex)
- Video (video DVD and TV operation)
- Voice control system (SBS) and text-to-speech
Reading in the controls and input signals
The input factors are read in via the following connections:
- Direct line
- CAN
- Media Oriented System Transport (MOST)
Direct line
The COMAND controller unit has the following direct connections:
- Circuit 30g
- Circuit 31
- AUX jack electrical connector (X39/45) (access in glove compartment, in model 204.9 as of 1.6.2011 in stowage compartment (telephone compartment) below center armrest)
- FM, AM and CV antenna amplifier (A2/18) (model 204.0)
- Rear window antenna amplifier 1 (A2/71) (model 204.2/9)
- Antenna amplifier for rear window FM antenna(A2/19)
- Electronic Toll Collection control unit (A50/3) (dealer option)
- VICS control unit (A2/37) (dealer option)
- Communications control unit (N123/6) (up to 31.5.2010)
- Hands-free system microphone (A67b1) (2 microphones)
- Reversing camera control unit (N66/2)
- Bluetooth antenna (A2/91)
- Multifunction antenna (A28/11)
- TV tuner control unit (N143) (up to 31.5.2009)
- Digital TV tuner (A90/3) (as of 1.6.2009)
- COMAND fan motor (M4/13) (diagnosis)
CAN
The COMAND controller unit is a telematics CAN (CAN A) and interior CAN (CAN B) subscriber
MOST
The COMAND controller unit is a MOST subscriber and receives control and audio signals from the following control units:
- TV digital tuner (as of 1.6.2009)
- Media interface control unit (N125/1) (with code (518) Media interface)
Evaluation of input factors
The input values are processed in the COMAND controller unit.
Activation of output media and system components
- Audio out (speaker)
- COMAND fan motor (power supply and speed control)
- Switching voltage for the communications control unit (up to 31.5.2010)
- Switching voltage for VICS control unit
- Switching voltage for Electronic Toll Collection (ETC) control unit
- Video out, low voltage differential signaling (LVDS) line
The LVDS line transmits picture and video signals from the COMAND controller unit to the Audio/COMAND display (A40/8) via copper lines
Design
The following components are integrated in the COMAND controller unit:
- Operating panel for controlling the audio, navigation and telematics functions
- Radio tuner
- Single DVD drive
- Card reader for PCMCIA cards
- *Bluetooth® receiver for hands-free use of telephone
- Central computer
- Navigation processor
- Hard disk
- Audio amplifier
Function
The buttons on the operating panel of the COMAND controller unit are read in and relayed to the central computer. The signals from the button operations are processed further in the central computer and forwarded via the telematics CAN or the interior CAN to the other system components in the form of messages. If the ON button on the COMAND controller unit is pressed, the COMAND controller unit is switched on. The volume for the respective set audio source is regulated by turning the rotary switch. The function keys switch over to the audio source desired by the user.
These additional functions are also available:
DVD drive
An audio/video CD/DVD can be played using the integrated DVD drive.
Navigation and global positioning system (GPS) control unit
The navigation processor is integrated into the COMAND controller unit and calculates the location of the vehicle using the incoming antenna signals. It also calculates the vehicle's route after the destination has been entered.
Turn rate sensor
The turn rate sensor determines the direction changes of the vehicle.
It is installed into the navigation processor. A calibration is not required.
Diagnosis
The COMAND controller unit is the diagnosis gateway. The diagnostic communication takes place between the COMAND controller unit and the front SAM control unit with fuse and relay module (N10/1) via the interior CAN. The diagnostic communication between the front SAM control unit with fuse and relay module and the diagnostic connector (X11/4) connected to Star Diagnosis is performed via the diagnostic CAN (CAN D).
| Technical data Designation |
Unit | Values | Tolerance range | Remarks |
|---|---|---|---|---|
| COMAND controller unit | ||||
| Power supply | VV | 12 | Operating voltage (U B ) | |
| Voltage limits | VV | 9 | Minimum (UBmin ) | |
| VV | 16 | Maximum (UBmax ) | ||
| Power consumption | A | 15 | Rated current consumption (IBmax) | |
| A | 3.5 | Rated current consumption (IBTyp) | ||
| A | approx. 4.5 | Speaker (IAction ) | ||
| A | approx. 0.1 | Cradle ON/OFF (IAction ) | ||
| mA | 0.3 | Quiescent current (I 0 ) | ||
| Reverse polarity protection | Yes | |||
| Additional specific parameters | None | |||
| Special features | The COMAND controller unit is protected with a 20 A fuse in the combination plug, MQS 40pin (electrical) at the rear panel. | |||
| Flash capability/coding capability | YES/n. A. |
| Cockpit Management and Data System (COMAND) control unit wiring diagram | A40/3, Specification 1 | PE82.85-P-2101-97FAB | |
| A40/3, Specification 2 | PE82.85-P-2101-97FAC |