Location
S600 | Engine start and engine stop button |
W07.04-1095-76
The engine start and engine stop button (S600) is located in the direction of travel on the left, on the fuel filter module.
Task
The engine start and engine stop button (S600) has different tasks, depending on whether the engine is at a standstill or running, and if the actuation of the fuel injectors via Star Diagnosis was switched off or not:
If the engine is at a standstill and actuation of the fuel injectors is not switched off, a brief press of the engine start and engine stop button (S600) can start the engine again. The engine continues to run at idle speed after releasing the button.
If the engine start and engine stop button (S600) is pressed and held with the engine at a standstill, the engine rpm starts increasing after 3 s until the engine reaches the maximum governed rpm or until the engine start and engine stop button (S600) is released again. After releasing the engine start and engine stop button (S600) the engine will continue to run at the rpm it had reached before the button was released.
If the engine has stopped and actuation of the fuel injectors has been switched off, then pressing the engine start and engine stop button (S600) rotates the engine until the button is released again.
If the engine start and engine stop button (S600) is pressed with the engine running, the engine management (MCM) control unit (A4) interrupts actuation of the fuel injectors and the engine is switched off.
A safety function in the software for the engine management (MCM) control unit (A4) and the drive control (CPC) control unit (A3) prevents the engine from starting when a gear is engaged (starter lockout), or it prevents starter actuation when the engine is already running (start-quantity locking device).