Function
Function
Rear seat entertainment module (RSE)
Note! There may be a slight delay between selecting a DVD function with the remote control and activation of the DVD player function. A message will appear on the screen to confirm that the DVD function was selected. Display of ‘Not permitted' indicates that the DVD player is still processing a previously selected function.
The rear seat entertainment system is supplied with power and regulated by the rear seat entertainment module (RSE) (16/82).
The control module also includes the DVD player for the system.
The system can either be switched on with the POWER button on the control module or with the POWER button on the remote control.
The remote control must be aimed at one of the screens before a button is depressed as the receiver for remote control signals is located in the bottom edge of the screens.
When the remote control is aimed at a screen (16/81A, B) and a function button is depressed, the rear seat entertainment module (RSE) identifies the selected screen and carries out the remote control command.
If, for example, you press a menu selection button, a menu opens on the screen at which the remote control was aimed. The possible selections are described below:
- Independent shifting of three audio/video inputs (DVD, TV (if installed) and AUX).
- Image adjustment (image color, brightness, contrast and aspect ratio).
- Audio settings (bass, treble and volume).
- Language selection for on-screen instructions.
- Switch individual screens ON/OFF.
The rear seat entertainment module (RSE) also determines which media source has been linked to the selected screen and forwards the commands in the suitable protocol.
If, for example, the left screen is set for DVD playback and an infrared play command is detected at the left screen, the message is received, saved and forwarded to the DVD player (16/82) in the DVD player's infrared protocol.
A fixed memory saves the displayed instruction language used and the current audio and video settings for the respective output channel. These settings are loaded upon start-up with the exception of volume level, which is set to low as standard.
The system is powered via X-feed and directly from the battery. If the system is operating when the ignition is switched of, a question will appear on the screens as to whether continued play is permitted.
If the user answers YES, the system will continuing playing another 10 minutes. The system will then shut down. If there is no response to the question, the system will shut down after 1 minute. As a means of safeguarding the battery, play time cannot be extended unless the ignition is switched on again.
When a DVD is inserted in the opening, DVD playback starts automatically if the disc does not have a play menu. DVD playback can be resumed from a pause, for example if the ignition is switched off while a movie is being played. Playback then resumes where it left off once the ignition is switched back on. Audio and video signals are fed out from the DVD player from the connection block (ISO connection) on the rear of the unit.
System start-up
When the ignition is switched on the Rear seat entertainment module (RSE) performs a basic internal system check and starts the start-up procedure with the screens.
The start-up process differs depending on software.
Previous software
Start-up process, no communication fault
1. The ignition is switched on.
2. Lighting in the DVD-player's buttons is activated.
3. The Rear seat entertainment module (RSE) feeds the connections #E1 (left-hand screen) and #E13 (right-hand screen) with voltage.
4. The Rear seat entertainment module (RSE) sends a wake-up signal of approximately 11.5 V to connection #E2 for the left-hand screen.
5. The left-hand screen then returns an OK signal to the Rear seat entertainment module (RSE) via the internal CAN network.
6. The Rear seat entertainment module (RSE) returns a message to the left-hand screen on the CAN network which assigns the screen number 1. This is necessary for the video and audio to be addressed to the right screen and so that commands from the remote control can be executed on the right screen. Wake-up signal's voltage maintained at 11.5 V.
7. Communication for the left-hand screen is now OK.
8. The Rear seat entertainment module (RSE) sends a wake-up signal of approximately 11.5 V to connection #E14 for the right-hand screen.
9. The right-hand screen then returns an OK signal to the Rear seat entertainment module (RSE) via the internal CAN network.
10. On the CAN, the Rear seat entertainment module (RSE) sends back a message to the right hand screen allocated screen number 2. The wake-up signal's voltage is maintained at 11.5 V.
11. Communication for the right-hand screen is now OK.
12. Lighting in the DVD-player's buttons, except the POWER button, goes out.
13. The start-up procedure is implemented and the system switches to standby.
Start-up times
A start-up with fault-free communication takes 4-10 seconds.
Start-up process, communication fault with left screen
1. The ignition is switched on.
2. Lighting in the DVD-player's buttons is activated.
3. The Rear seat entertainment module (RSE) feeds the connections #E1 (left-hand screen) and #E13 (right-hand screen) with voltage.
4. The Rear seat entertainment module (RSE) sends a wake-up signal of approximately 11.5 V to connection #E2 for the left-hand screen.
5. No response from left screen. The Rear seat entertainment module (RSE) maintains high voltage (11.5V), but drops it down to 0 V every 10 seconds until further notice. The wake-up signal to the right screen is 0 V.
6. Lighting in the DVD player's buttons follow the same pattern as the wake-up signal for the left screen.
7. The system will not work.
Start-up process, communication fault with right screen
1. The ignition is switched on.
2. Lighting in the DVD-player's buttons is activated.
3. The Rear seat entertainment module (RSE) feeds the connections #E1 (left-hand screen) and #E13 (right-hand screen) with voltage.
4. The Rear seat entertainment module (RSE) sends a wake-up signal of approximately 11.5 V to connection #E2 for the left-hand screen.
5. The left-hand screen then returns an OK signal to the Rear seat entertainment module (RSE) via the internal CAN network.
6. The Rear seat entertainment module (RSE) returns a message to the left-hand screen on the CAN network which assigns the screen number 1. This is necessary for the video and audio to be addressed to the right screen and so that commands from the remote control can be executed on the right screen. Wake-up signal's voltage maintained at 11.5 V.
7. Communication for the left-hand screen is now OK.
8. The Rear seat entertainment module (RSE) sends a wake-up signal of approximately 11.5 V to connection #E14 for the right-hand screen.
9. No response from right screen. The Rear seat entertainment module (RSE) maintains high voltage (11.5V), but drops it down to 0 V every 10 seconds until further notice. The wake-up signal to the left screen (whose communication is OK) is continually high (11.5V).
10. Lighting in the DVD player's buttons follow the same pattern as the wake-up signal for the right screen.
11. The system will not work.
Start-up process, CAN related fault
1. The ignition is switched on.
2. Lighting in the DVD-player's buttons is activated.
3. The Rear seat entertainment module (RSE) feeds the connections #E1 (left-hand screen) and #E13 (right-hand screen) with voltage.
4. The Rear seat entertainment module (RSE) sends a wake-up signal of 11.5 V at the same time to both terminals, #E2 for the left screen and #E14 for the right screen.
5. The Rear seat entertainment module (RSE) maintains high voltage (11.5 V) to both screens, but drops it down to 0 V every 10 seconds until further notice.
6. Lighting in the DVD player's buttons follow the same pattern as the wake-up signal for the screens.
7. The system will not work.
Conclusions of start-up signal's voltage
By checking the wake-up signal's voltage to both the screens during system start-up, the following conclusions can be drawn. The table below is worked into the symptom fault-tracings.
Later software
1. The ignition is switched on.
2. Lighting in the DVD-player's buttons is activated.
3. The Rear seat entertainment module (RSE) feeds the connections #E1 (left-hand screen) and #E13 (right-hand screen) with voltage.
4. The Rear seat entertainment module (RSE) sends a wake-up signal of approximately 11.5 V to connection #E2 for the left-hand screen.
5. The left-hand screen then returns an OK signal to the Rear seat entertainment module (RSE) via the internal CAN network.
Note! the screen does not respond on the CAN network, the Rear seat entertainment module (RSE) makes a further two attempts according to the pattern below (*). If the screen does not respond the Rear seat entertainment module (RSE) continues as set out in section 8 below.
6. The Rear seat entertainment module (RSE) returns a message to the left-hand screen on the CAN network which assigns the screen number 1. This is necessary for the video and audio to be addressed to the right screen and so that commands from the remote control can be executed on the right screen.
7. Communication for the left-hand screen is now OK.
8. The Rear seat entertainment module (RSE) sends a wake-up signal of approximately 11.5 V to connection #E14 for the right-hand screen.
9. The right-hand screen then returns an OK signal to the Rear seat entertainment module (RSE) via the internal CAN network.
Note! If the screen does not respond on the CAN network, the Rear seat entertainment module (RSE) makes a further two attempts according to the pattern below (*). If the screen does not respond the Rear seat entertainment module (RSE) continues as set out in item 12 below.
10. The Rear seat entertainment module (RSE) returns a message to the right-hand screen on the CAN network which assigns the screen number 2.
11. Communication for the right-hand screen is now OK.
12. Lighting in the DVD-player's buttons, except the POWER button, goes out.
13. The start-up procedure is implemented and the system switches to standby.
14. The system can now be started using the POWER button on the DVD player or the remote control.
(*) Wake-up signal (signal pattern with a fault)
High signal (approx. 11.5 V) is sent for approx 1 second (first attempt).
If there is no response a low signal is sent (approx. 0 V) for approximately 1 second.
High signal (approx. 11.5 V) is sent for approx 1 second (second attempt).
If there is no response a low signal is sent (approx. 0 V) for approximately 10 seconds.
High signal is sent (approx. 11.5 V) and remains continuously high (third and last attempt).
Start-up times
Start-up without faults detected takes approximately 4-10 seconds.
Start-up with communication fault on one screen takes approximately 20-25 seconds.
Start-up with communication fault on both screens takes approximately 30-35 seconds.
The times above should only be seen as a guide and are not exact times.
Rear audio separation module (RAS)
The rear audio separation module (RAS) (16/122) is designed to redirect audio signals from the car's internal audio system or from the system's DVD player to the rear speakers (16/5, 16/6, 16/57 and 16/58).
When the unit is in normal mode, audio signals are routed from the front audio system to the rear speakers.
The remote control can be used to activate the rear audio separation module (RAS). Audio signals from the front audio system will then be replaced with audio signals from the rear seat entertainment system.
Which audio channel is connected to the rear speakers is determined by which screen the remote control is aimed at when the button to activate the rear audio separation module (RAS) is pressed.
If a parking assistance system is installed, the control module is temporarily deactivated via an input when reverse gear is engaged. The deactivation signal comes from the same voltage circuit the drives the reversing lights. The parking assistance system signals will then be heard via the rear speakers.
Infrared (IR) control
Each screen houses an IR receiver. The IR receivers are directly connected to the rear seat entertainment module (RSE) (16/82) and are activated when the rear seat entertainment module (RSE) is supplied power. When a button is pressed on the remote control, it emits a signal with infrared light. The coding of this signal varies depending on which button was pressed. The IR signal is received by the IR receiver below the respective head restraint screen (16/81A, B) and is forwarded to the rear seat entertainment module (RSE) for processing.
The remote control can be used to switch between different audio and/or video inputs in the system:
- DVD player, audio/video
- AUX input, audio or audio/video
- Audio from the front audio system to one of the headphones, both headphones or separately to one of the headphones and the rear speakers
- Audio/video from a TV receiver (if installed) to one or both screens.
Selection is carried by pointing the remote control towards the screen to be commanded. Depending on which of the two screens that received the command, the Rear seat entertainment module (RSE) selects AV or audio source for the screen. The remote control can then be pointed to the other screen to select the source for that screen.
Headphones
The system includes two pairs of IR headphones as standard. Any number of headphones can be used as long as they are within range of the IR transmitter.
Sound is transferred from the screen to the wireless headphones via an infrared signal. There must be free travel between the transmitter in the bottom edge of the screen and the receivers on the side of the headphones. If the way is blocked, the signal may be interfered with and sound quality will thus deteriorate.
The headphones are switched on with the switch located on the side. The headphones switch off automatically if no IR signal is received for 3-4 minutes.
The headphones also have a button to set which audio channel to listen to. Channel A or B can be selected. Channel A is always transmitted from the left screen and channel B is always transmitted from the right screen.
Note! Lowering the volume of the screen will increase the signal/noise ratio of the headphones. Optimal headphone output is obtained by setting screen volume to 75%. Headphone volume can then be regulated using the wheel on the headphones themselves.