GF82.85-P-0003-07TXB Cockpit Management and Data System (COMAND) Switch On/Off Behavior

GF82.85-P-0003-07TXB Cockpit Management And Data System (COMAND) Switch On/Off Behavior
- with CODE (528) COMAND with DVD changer
- with CODE (512) COMAND APS with DVD changer
- with CODE (527) COMAND APS with single DVD drive (with navigation)


Activating the overall system
When the vehicle is opened, all data bus systems are activated to ensure a faster switch-on procedure. After inserting the transmitter key (A8/1) into the EIS [EZS] control unit (N73) and turning to position 1 ("circuit 15R ON"), the display on the COMAND operating, display and controller unit (A40/3) is switched on, if it had been switched on the last time the transmitter key was removed. The system that was active before the key was last removed (e.g. radio) is switched on and the corresponding main menu is displayed. If the COMAND operating, display and controller unit was switched off, a warning note with general information about how to use the system generally appears when it is switched back on.

Conduct when pushing "ON" button
The COMAND operating, display and controller unit and the display can also be switched on when the transmitter key is removed by pressing the "ON" button.
All functions are then available for t = 30 minutes After this the COMAND operating, display and controller unit switches off automatically.

Switch-off characteristics
The COMAND operating, display and controller unit is switched off when the transmitter key is removed (circuit 15C OFF). The run-on time of t = 30 min. (standby) of the navigation system starts. During the run-on time, all the important localizing parameters remain stored.
When the COMAND operating, display and controller unit is not switched on, it is always in standby if the Controller Area Network bus Class B (interior) (CAN-B) is active.

Switch off characteristics at undervoltage
In the case of battery (G1) undervoltage, a message appears on the display on the COMAND operating, display and controller unit requesting the driver to start the engine. If the engine is not started, an additional warning is output after t = 3 min, indicating that the system will be switched off in 10 s if the engine is not started.

If the system has shut off and the on-board power supply rises again, the COMAND operating, display and controller unit does not switch itself on again automatically. The system can be switched on again manually. The warning procedure then runs again, until the cause for the undervoltage is rectified.

Switch off behavior (run-on mode) when the destination has not been reached
If the route guidance destination has not been reached, the navigation system in the COMAND operating, display and controller unit acts as follows when the engine is shut off:
- Navigation remains active up to t = 30 min. (e.g. refueling stop). Navigation continues from where it left off after restarting the vehicle.
- After t = 30 min up to a maximum of t = 2 h, the COMAND operating, display and controller unit remains in "Sleep mode". The route is recalculated after restarting the vehicle and the navigation continued.
- After t = 2h a prompt is displayed after starting the vehicle asking whether the route should be recalculated.
"YES" = Route is calculated again.
"NO" = Navigation will cease.