Depending on the engine, the ECO start/stop function is not available in all drive programs. Observe the status display in the driver display for this.
You brake the vehicle to a standstill in transmission position
or 
. Vehicles with a 48 V on-board electrical system: You depress the brake pedal when travelling at a low speed.
You stop at a stop sign and there is no vehicle in front of you.
The vehicle that stopped in front of you starts up again.
You manoeuvre, turn the steering wheel sharply or engage reverse gear.
If the system detects an intelligent stop inhibitor, for example, a stop sign, the engine will not stop.
If you activate the HOLD function or engage the park position 
, the engine can be switched off in spite of an intelligent stop inhibitor.
You engage transmission position
or 
. You depress the accelerator pedal.
An automatic engine start is required by the vehicle.
You release the brake pedal.
Vehicles with a 48 V on-board electrical system:
You release the brake pedal on a downhill gradient and the vehicle does not roll.
The vehicle rolls on a downhill gradient and does not automatically enter glide mode at 20 km/h.
The symbol
(green) appears when the vehicle is at a standstill: The engine was switched off by the ECO start/stop function. The symbol
(yellow) appears when the vehicle is at a standstill: Not all vehicle conditions for an engine stop have been met. Neither the symbol
nor appears when the vehicle is at a standstill: An intelligent stop inhibitor was detected, for example, a stop sign. The symbol
appears: The ECO start/stop function is deactivated or there is a malfunction.
If the engine was switched off by the ECO start/stop function and you leave the vehicle, a warning tone sounds and the engine is not restarted. In addition, the following display message appears in the driver display:
Vehicle is operational Switch off vehicle before exiting
If you do not switch off the ignition, it is automatically switched off after three minutes.