Cockpit Management and Data System (COMAND) Switch on/off behavior - GF82.85-P-0003-07LEJ

MODEL 216 with CODE (529) HIGH Class Japan as of Model Year 09 /AEJ 08 MODEL 221 with CODE (529) HIGH Class Japan as of Model Year 09 /AEJ 08 

Activating the overall system 

When the vehicle is opened, all data bus systems are activated to ensure a faster switch-on procedure. Moving the transmitter key (A8/1) to position "1" (circuit 15R ON) switches on the COMAND display (A40/8), provided that it was on before the transmitter key was last 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 controller unit (A40/3) was switched off for more than t = 30 min, then a message appears at first with general information about how to use the system.

Conduct when pushing "ON" button 

The COMAND controller unit and the COMAND display can also be switched on with the transmitter key removed by pressing the "ON" button (A40/9s6). All functions are then available for t = 30 minutes The COMAND control unit then switches off automatically.

Switch-off characteristics 

The COMAND 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.

The audio system run-on time can be set by customer service. When it is switched off, the COMAND controller unit is always in "standby" mode when the central CAN is active.

Switch off characteristics at undervoltage 

If the voltage of the on-board electrical system battery (G1) is low, a message appears on the COMAND display requesting that the engine be started. 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 voltage increases again, the COMAND controller unit does not switch back on 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 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 controller unit remains in the "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.