START-STOPsystem
Introduction
This chapter contains information on the following subjects:
Operation
77
Manually deactivating/activating the system
78
The START-STOPsystem (hereinafter referred to as: the system) reduces CO 2emissions and harmful emissions, and saves fuel.
If the system determine that the engine is not needed when the vehicle stops
(e.g. at the traffic lights), it turns off the engine and starts it again when mov-
ing off.
The system function depends on many factors. Some of them are down to the
driver, the others are systemic and can neither be influenced nor identified.
Therefore the system may react differently in situations which seem identi-
cal from the driver's perspective.
The system is automatically activated every time the ignition is switched on
(even where this has previously been manually deactivated with the button
).
Note
If the engine has stopped due to the system, the ignition remains on.
Operation
Fig. 90
Display
Vehicles with manual transmission
The engine is automatically switched offas soon as the vehicle comes to a halt,
the shift lever is moved into neutral and the clutch pedal is released.
The engine is automatically startedas soon as the clutch pedal is depressed.
Vehicles with automatic transmission
The engine is automatically switched offas soon as the vehicle comes to a
standstill and the brake pedal is operated.
The engine is automatically startedas soon as the brake pedal is released.
Requirements for the system to function correctly
The following conditions must be met for the system to function correctly.
The driver's door is closed.
The driver has fastened the seat belt.
The bonnet is closed.
The driving speed was higher than 4 km/h after the last stop.
System status
The system status is shown in the display when the vehicle comes to a halt
» Fig. 90 .
The engine is automatically switched off; when the vehicle moves off the
ignition process will be automatically initiated.
The engine is not automatically switched off.
Reasons for the engine running
It may be essential for the engine to keep running when the vehicle comes to
a halt, for the following reasons. ▶ 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 capacity (high fan speed, big difference be-
tween the desired and actual interior temperature).
When the engine is shut-down automatically and the system detects that the
engine is required such as when the brake pedal is pressed repeatedly then
the system automatically starts the engine. 77Starting-off and Driving
