Conditions for the Start/Stop function

Certain conditions must be met for Start/Stop to function.

If any condition is not met, this will be indicated in the instrument panel.

The engine does not auto-stop

The engine will not auto-stop if:

  • the vehicle has not reached a speed of ca 10 km/h (6 mph) after starting.
  • after several auto-stops, the speed must again exceed approximately ca 10 km/h (6 mph) before the next auto-stop.
  • the driver's seat belt is unbuckled.
  • the start battery's charge is below the minimum level.
  • the engine is not running at its normal operating temperature.
  • the ambient temperature is under approximately -5 °C (23 °F) or over approximately 30 °C (86 °F).
  • windshield heating is activated.
  • the climate system settings and the actual climate in the passenger compartment differ.
  • the vehicle is backing up.
  • the start battery's temperature is above or below the permitted limits.
  • the driver is turning the steering wheel hard.
  • the road gradient is very steep.
  • the hood is open.
  • driving at high altitude and the engine has not reached its normal operating temperature.
  • ABS has been activated.
  • hard braking (even if the ABS system has not been activated).
  • many starts during a short period of time have triggered the starter motor's overheating protection.
  • the exhaust system's particulate filter is full
  • a trailer is connected to the vehicle's electrical system.
  • the transmission is not running at its normal operating temperature.
  • the gear selector is in mode M (±).

The engine does not auto-start

The engine will not auto-start after an auto-stop if:

  • the driver is not wearing a seat belt, the gear selector is in the P position and the driver's door is open. The engine must be started normally.

The engine auto-starts while the brake pedal is depressed

In the following situations, the engine will auto-start even if the brake pedal is depressed:

  • high levels of condensation on the inside of the windows.
  • the climate system settings and the actual climate in the passenger compartment differ.
  • electrical current consumption is temporarily high or the start battery's charge is below the minimum level.
  • the brake pedal is pumped repeatedly.
  • the hood is open.
  • the vehicle begins to roll or increases speed slightly if the engine auto-stopped before the vehicle was at a standstill.
  • the driver's seat belt is unbuckled with the gear selector in the D or N positions.
  • the gear selector is moved from D to R or M (±).
  • the driver's door is opened with the gear selector in D. An audible signal and a text message informs the driver that the ignition is on.

 Warning

Do not open the hood if the engine has auto-stopped. Turn off the engine by switching off the ignition before lifting the hood.

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