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Conditions for the system function The following conditions must be met for the system to function correctly. The driver's door is closed. System status The system status is shown in the display when the vehicle comes to a halt The engine is switched off automatically; when moving off, the ignition process will be initiated automatically. When stopping, the engine will not switch off for the following reasons, among others. ▶ The engine temperature for the proper function of the system has not yet been reached. ▶ The charge state of the vehicle battery is too low. ▶ The current consumption is too high. ▶ High air conditioning or heating output (high blower speed, big difference between the desired and actual interior temperature). If the engine is shut down automatically and the system detects that the en- gine is required, such as when the brake pedal is pressed repeatedly, then the system automatically starts the engine. fotainment screen in menu / → → display Vehicle status. If there is a system fault, the following message will appear in the display of the instrument cluster. Seek help from a specialist garage. Note ■ If the driver's seat belt is removed for more than 30 seconds or the driver's door is opened after the engine has switched off automatically, the engine will have to be restarted manually. ■ No automatic engine shut-down takes place when a vehicle with automatic transmission is moving at low speed (e.g. during a traffic jam) and remains sta- tionary after pressing the brake pedal lightly. Automatic engine shut-down takes place if you press the brake pedal down with more force. ■ For vehicles with automatic transmission there is no automatic engine shut- down when the system detects a manoeuvring action due to a large steering angle. Manually disable / enable system Fig. 247 Button for the START-STOP sys- tem › To deactivate/activate, press the button . When the system is deactivated, the symbol illuminates in the button. If the system is deactivated, it will be reactivated automatically after the igni- tion has been switched off and on. Note If the system is deactivated when the engine is turned off automatically, then the automatic start process takes place. 205 Starting-off and Driving |