TV-Mode, Function - GF82.85-P-2011RFM
Model 205
as of model year 2019
with code 865 (digital TV)
Model 253.99
with code 865 (digital TV)
Model 205 as of model year 2019
with code 446 (Touchpad only)
with code 865 (digital TV)
Model 205
as of model year 2019
with code 448 (Touchpad)
with code 865 (digital TV)
Model 253.99
with code 446 (Touchpad only)
with code 865 (digital TV)
Information on touchpad
The touchpad is installed in two variants.
Variant (with code 448 (Touchpad)): The touchpad is installed together with the Audio/COMAND control panel. The touchpad is connected only to the telematics CAN.
Variant 2 (with code 446 (Touchpad only)): The touchpad is installed instead of the Audio/COMAND control panel. In this case, the upper control panel control unit, the left lower control panel and right lower control panel are connected to the touchpad over the LCP-LIN. The touchpad is also connected to the telematics CAN.
Function requirements, general
- Circuit 30t ON
- Transport mode not active
- No smartphone connected via Android Auto or CarPlay
TV mode
The TV tuner control unit enables the reception of digital television programs. The program contents are shown in the audio/COMAND display.
The head unit can be switched ON using the "ON" button in the respective lower control panel. The respective lower control panel sends the status of the "ON" button over the LCP-LIN, Audio/COMAND control panel (except code 446 (Touchpad only)) or touchpad (with code 446 (Touchpad only)) and the telematics CAN to the head unit.
Vehicles without CODE (498) Japan version
The TV programs are broadcast using the Digital Video Broadcasting-Terrestrial standard (DVB-T/DTV-T2) in the 470 to 710 MHz range. In addition to the video compression standard Mpeg 2, Mpeg 4 and Mpeg H (+H.265) is also supported. Encrypted programs can also be received with the aid of a Common Interface Plus (CI+) module.
New services will be available in future in the 90 to 108 MHz and 170 to 222 MHz frequency ranges.
The TV tuner control unit has the following functionalities:
- Video text (pages: 100 to 899)
- Station list of channels currently receivable
- Last settings
- National settings
- Info (information on currently selected stations)
Video text function: Some stations, primarily in central Europe, also offer video text along with your TV programs. To this end, the TV tuner control unit is equipped with a separate video text decoder. Only video text broadcast with Latin ASCII characters are supported, i.e. Greek or Cyrillic characters are not supported.
Vehicles with CODE 498 (Japan version)
With digital TV reception the "one-segment" substandard (TV standard for mobile telephony) is also supported in addition to the "full-segment" substandard.
The TV tuner control unit has the following functionalities:
- Digital image storage
- Last settings
- Broadcast Markup Language (BML):
The TV tuner control unit supports video text for all available Japanese TV stations. This enables information to be shown similar to a small website on weather, news, etc. By selecting a region in the setting list you can obtain region-specific information.
- Electronic Program Guide (EPG):
The Electronic Program Guide (EPG) shows information such as the start and end of broadcasts along with detailed information on the television program for each TV station.
- Bilingual:
Two languages are supported depending on station availability, e.g. Japanese on the main sound track and English on the sub sound track.
The TV functions can be operated using the following controls:
- Multifunction steering wheel button group
The TV functions can be operated using the head unit multifunction steering wheel button group. The volume can be adjusted using the volume control switch in the head unit multifunction steering wheel button group.
The steering wheel electronics reads the control signals directly. The steering wheel electronics send the control signals over the steering wheel CAN to the steering column tube module control unit and from there over the suspension FlexRay, electronic ignition lock control unit and the user interface CAN to the head unit.
- Audio/COMAND control panel (except code 446 (touchpad only))
The TV functions can be operated using the audio/COMAND controller and the "Back" button on the Audio/COMAND control panel.
The Audio/COMAND control panel transmits the control signals via telematics CAN to the head unit.
- Touchpad (with code 446 (Touchpad only))
The touchpad can be used to operate the TV functions. The touchpad transmits the operation signals over the telematics CAN to the head unit.
- Upper control panel control unit, lower control panel
The TV functions can be activated on the upper control panel control unit. The volume can be regulated using the volume adjustment button (manual transmission) on the left lower control panel or using the volume setting button (automatic transmission) on the right lower control panel. The upper control panel control unit sends the operation signals, the left lower control panel sends the status of the volume adjustment button (manual transmission) and the right lower control panel sends the status of the volume setting button (automatic transmission) over the LCP-LIN, Audio/COMAND control panel (except code 446 (Touchpad only)) or touchpad (with code 446 (Touchpad only)) and the telematics CAN to the head unit.
The TV tuner control unit splits up the video and audio signals that are contained in the TV signals.
The TV mode function comprises the following subfunctions:
- Receipt of TV signals
- Output of video signals
- Audio signal output
Receipt of TV signals
TV 1 signals are received by the rear window antenna A2/32 (model 205.0/1/3, 253.99) or the windshield antenna A2/118 (model 205.2/4) and forwarded over the TV 1 and DAB Band III antenna amplifier A94/5 (model 205.0/1/3, 253.99) or the FM 2, DAB and TV 1 antenna amplifier A2/131 (model 205.2/4) to the TV tuner control unit.
TV 2 signals are received by the rear window antenna A2/32 (model 205.0/1/3, 253.99) or the windshield antenna A2/118 (model 205.2/4) and forwarded over the TV 2 antenna amplifier A94/6 (model 205.0/1/3, 253.99) or the TV 2 and DAB Band III antenna amplifier A2/123 (model 205.2/4) and the TV and DAB antenna splitter A2/124 (model 205.2/4 with code 537 (Digital radio (DAB))) to the TV tuner control unit.
TV 3 signals are received by the windshield antenna and forwarded over the TV 3 antenna amplifier to the TV tuner control unit.
The TV tuner control unit processes the TV signals and separates the video signals from the audio signals.
Operating electrical or electronic devices (e.g. USB chargers) inside the vehicle can significantly impair the reception quality.
Output of video signals
The TV program contents are shown in the audio/COMAND display. The TV tuner control unit sends the video signals over MOST, head unit and the HSVL line to the audio/COMAND display.
Audio signal output
The audio signals are output via the speaker system. The TV tuner control unit sends the audio signals over MOST to the head unit. The head unit amplifies the audio signals and on vehicles except code 810 (Sound system) and except code 853 ("Midline" sound system) it issues them directly through the speaker system.
On vehicles with code 810 (Sound system) the TV tuner control unit sends the audio signals over MOST to the sound system amplifier control unit, which amplifies the audio signals and issues them through the speaker system.
On vehicles with code 853 ("Midline" sound system) the TV tuner control unit sends the audio signals over MOST to the Midline sound system amplifier control unit, which them amplifies the audio signals and issues them through the speaker system.
| Electrical function diagram for TV mode, function | PE82.85-P-2065-97FBB | ||
| Overview of system components, telematics | GF82.85-P-9999RF |