GF82.85-P-2006QKU Switch On/Off Behavior, Function

GF82.85-P-2006QKU Switch On/Off Behavior, Function

Activating the overall system
Position 0 (circuit 15C)
In order to ensure a quicker switch-on process, the data bus systems are activated for t = 3 min. by inserting the transmitter key (A8/1) into the EIS [EZS] control unit (N73), in position 0 (circuit 15C). If the radio (A2) is switched on with the "ON" button, it is switched off automatically after t = 30 min.

Position 1 (circuit 15R ON)
Turning the transmitter key (A8/1) to position 1 (circuit 15R ON) switches on the radio (A2), provided that it was on before the transmitter key (A8/1) was last removed. It remains in operation until the transmitter key (A8/1) is turned back to position 0 (circuit 15C).

The function options are restricted to:
^ Operating the radio (A2)
^ Multifunction display (A1p13) in instrument cluster (A1)
^ Operation via the multifunction steering wheel

Position 2 (circuit 15 ON)
All the functions in the vehicle are operational by continuing to turn the remote control key (A8/1) into position 2 (circuit 15 ON). The system which was active before it was last switched off (e.g. radio tuner) is switched on and the corresponding basic menu is displayed.
If the radio (A2) has been switched off for longer than t = 30 minutes, a warning menu appears with general instructions for using the system.

Position 3 (circuit 15X ON)
In position 3 (circuit 15X ON) of the transmitter key (A8/1), the engine is started. If a considerable voltage drop occurs while the engine is being started, the system switches itself off during the time of the motor start. However, the system is switched on again after the on-board electrical system has stabilized.

Conduct when pushing "ON" button
The radio (A2) can also be switched on with the transmitter key (A8/1) removed (circuit 15C OFF) by pressing the "ON" button. All functions within the system are then available for t = 30 min. The system switches off automatically once this time has elapsed.

Switch-On/Off behavior via "AUTO-ON"
If a telephone call or an SMS is received, the Universal Portable CTEL Interface (UPCI [UHI]) control unit (N123/1) is activated during the run-on time and initiates a wake-up pulse via the Media Oriented System Transport (MOST). The system components are "woken up".

The MOST is ready for operation to provide the necessary functions If the system has switched off after t = 30 min., the system can be switched on again by pressing the "ON" button. The run-on time of t = 30 min. then starts again.

Switch-off characteristics
Switching-off of the radio (A2) takes place either via the "ON" button or with the transmitter key (A8/1) removed (circuit 15C OFF). An active phone call is not interrupted by removing the transmitter key (A8/1). In this case, the MOST system switches itself off.
The radio (A1) is always in "standby mode" if the Controller Area Network bus class B (interior) (CAN-B) is active.

Behavior of radio (A2) with battery voltage of less than 11.5 V
The control electronics in the radio (A2) continuously monitor the battery voltage. Depending on the voltage value the system will act as follows:
If the battery voltage drops below 11.5 V (battery warning range), a message appears in the display and requests that the engine be started.. If the engine is not started, a further warning follows after t = 3 min. that approx. 10 seconds remain for starting the engine before the device switches off. In this case switching on the engine prevents the system from being automatically shut down. If the system has shut down and the voltage reading rises again above 11.5 V, the radio (A2) will not be automatically activated.

If a system has been shut down, it can be switched back on again manually. However, the warning procedure then recurs until the cause for the undervoltage has been rectified.

Behavior of radio (A2) with battery voltage of less than 9.5 V
The radio (A2) is automatically put in a defined standby condition, in which only the battery voltage is monitored. In addition to this the current operating status is stored. In this condition, the radio (A2) cannot be operated nor addressed via STAR DIAGNOSIS. Communication with external components does not take place.