Driving with start/stop function

Updated 18/05/2020

The start/stop function temporarily switches off the engine when stationary and then starts it automatically when required.

The Start/Stop function is available when the car is started and can be activated if certain conditions have been met.

The driver display indicates when the function is

available
active
not available.

All of the car's normal systems such as lighting, radio, etc. work normally, even when the engine is auto-stopped. However some equipment may have its output temporarily reduced e.g. the climate control system's fan speed or extremely high volume on the audio system.

Auto-stop

The following is required for the engine to auto-stop:

Stop the car with the foot brake and then keep your foot on the brake pedal - the engine stops automatically.

In drive mode Comfort or Eco, the engine may auto-stop before the car is completely stationary.

With adaptive cruise control or Pilot Assist activated, the engine auto-stops approximately 3 seconds after the car has stopped.

Autostart

The following is required for the engine to auto-start:

Release the brake pedal - the engine will autostart and you can continue driving. On an uphill gradient hill start assist (HSA1) engages, which prevents the car from rolling backwards.
When the Auto Hold function is activated, auto-start is delayed until the accelerator pedal is depressed.
When adaptive cruise control or Pilot Assist is activated, the engine will auto-start when the accelerator pedal is depressed, or by pressing the button on the left keypad of the steering wheel.
Maintain foot pressure on the brake pedal and depress the accelerator pedal - the engine auto-starts.
On a downhill gradient: Release pressure on the brake pedal slightly so that the car begins to roll - the engine will auto-start after a slight speed increase.

Symbols in the driver display

P5-1507 Symbol Stop/Start inactive White - Appears in the tachometer when the function is available.

P5/P6-1917-Start/Stop Symbol, active Green - Appears in the tachometer when the function is active and the engine is auto-stopped.

P5-1507 Symbol Stop/Start not available Grey - The function is not available when this symbol is struck through and greyed out.

If no symbol is displayed, the function is disabled.

P5P6-1924-Start Stop A in circle symbol in gauge — The function is active and the engine is auto-stopped.

For cars with the eight-inch driver display, the symbol is displayed at the bottom of the speedometer.