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  • E-Class
  • Cabriolet
  • 2018
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Operation of the ECO start/stop function
Vehicles without a 48 V on-board electrical system (EQ Boost technology)
The engine is automatically switched off if the following conditions are met:

  • you brake the vehicle to a standstill in transmission position or .

  • if all vehicle conditions for an automatic engine stop are met.

The symbol appears in the multifunction display when the vehicle is stationary. If not all the vehicle conditions are met, the symbol appears in the multifunction display.

The engine is restarted automatically if:

  • you release the brake pedal in transmission position when the HOLD function is not active.

  • you shift from transmission position .

  • you engage transmission position or .

  • you depress the accelerator pedal.

  • you change the vehicle level.

  • you open or close the soft top.

  • an automatic engine start is necessary.

If the engine was switched off by the ECO start/stop function and you leave the vehicle, a warning tone sounds. The Vehicle is operational Switch off the ignition before exiting display message also appears in the multifunction display. If you do not switch off the ignition, the ignition is automatically switched off after one minute.

Vehicles with a 48 V on-board electrical system (EQ Boost technology)
The engine is switched off automatically in the following situations if all vehicle conditions for an automatic engine stop are met:

  • you brake the vehicle to a standstill in transmission position or .

  • you engage transmission position .

  • you depress the brake pedal when driving at speeds below 20 km/h.

The needle of the rev counter points to zero in the multifunction display.

If you switch on the HOLD function or select transmission position P, the engine will automatically stop in the following situations:

  • you stop behind a vehicle that is pulling away.

  • vehicles with Traffic Sign Assist: you stop at a stop sign when there is no vehicle in front of you.

  • you turn the steering wheel hard at a low speed.

The engine is restarted automatically if:

  • you release the brake pedal in transmission position when the HOLD function is not active and the vehicle does not start to move.

  • you engage transmission position or .

  • you release the brake pedal and the vehicle starts to move on a gentle downhill gradient at a speed below 5 km/h.

  • you depress the accelerator pedal.

  • you change the vehicle level.

  • you open or close the soft top.

  • an automatic engine start is necessary.

If the engine was switched off by the ECO start/stop function and you leave the vehicle, a warning tone sounds. The Vehicle is operational Switch off the ignition before exiting display message also appears in the multifunction display. If you do not switch off the ignition, the ignition is automatically switched off after one minute.

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