The system reduces fuel consumption and CO2 emissions by shutting down the engine when your vehicle is idling, for example at traffic lights.
WARNING   WARNING:  Always fully apply the parking brake. Make sure you shift into park (P) for vehicles with an automatic transmission. Switch the ignition off and remove the key whenever you leave your vehicle.
WARNING   WARNING:  Before opening the hood or performing any maintenance, fully apply the parking brake, shift into park (P) or neutral (N) and switch the ignition off.
WARNING   WARNING:  Always switch the ignition off before leaving the vehicle. If the ignition is switched on an automatic restart may occur at any time.
WARNING   WARNING:  The system may require the engine to automatically restart when the auto-start-stop indicator illuminates green or flashes amber. Failure to follow this instruction could result in personal injury.

Missing Image  Note: The Start-Stop indicator will illuminate green when the engine shuts down, flashing amber (accompanied by a message) if you need to take action, and grey if start-stop is not available.   See   Warning Lamps and Indicators
Using Start-Stop (Manual Transmissions)
To Stop the Engine
  1. Stop your vehicle.
  1. Move the transmission to neutral.
  1. Release the clutch and accelerator pedals.
To Re-Start the Engine
For vehicles with manual transmission, fully depress the clutch pedal.
Note:   To obtain maximum benefit from the system, move the transmission to neutral and release the clutch pedal during any stop of longer than three seconds.
Note:   Start-Stop also comes with stall recovery. If you fully press the clutch pedal after stalling the engine, it will automatically restart the engine for you.
Using Start-Stop (Automatic Transmissions)
To Stop the Engine
  1. Stop your vehicle in drive (D).
  1. Release the accelerator pedal.
  1. Keep the brake pedal pressed.
Note:   The engine will also shut down in neutral (N) and park (P) – with or without foot on brake.
To Re-Start the Engine
Release the brake pedal or press the accelerator pedal.
Limitations of use:
The engine may not shut down under certain conditions, for example:
  • Engine is warming up.
  • To maintain climate comfort.
  • Low battery charge.
  • The outside temperature is too low or too high.
  • The driver door has been opened.
  • The driver seatbelt has been undone.
  • The heated windshield is switched on.
  • During regeneration of the diesel particulate filter.
The system may also restart the engine restart under certain conditions, for example:
  • To maintain climate comfort (for example, air conditioning).
  • Low battery charge.
  • The heated windshield is switched on.
  • Your vehicle has started rolling downhill.
  • The driver seatbelt is undone (automatic transmissions only).
  • The driver door is opened (automatic transmissions only).
Switching the System Off and On
 The system automatically turns on each time you switch the ignition on.To switch the system off, press the switch (the word OFF will illuminate).The system will only be turned off for the current ignition cycle. Press the button again to switch the system back on.
Note:   If the system detects a malfunction, it will switch off. The OFF lamp on the switch will illuminate continuously. If this remains on after an ignition cycle, have your vehicle checked by an authorized dealer.
Service
Note:   The system may not function if the vehicle battery is replaced with one of a different specification to that originally fitted.
Note:   The system may not function if you leave extra electrical loads connected when the ignition is turned off as these can drain the battery.