114Driving and operating
During an Autostop, brake
performance will be maintained.
However, brake assist is not available
3 118.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled:
■ The stop-start system is not manually deactivated.
■ the bonnet is fully closed.
■ the driver's door is closed and the driver's seat belt is fastened.
■ the vehicle battery is sufficiently charged and in good condition.
■ the engine is warmed up.
■ the engine coolant temperature is not too high.
■ the outside temperature is not too low or too high (e.g. below 0 °C orabove 30 °C).
■ the brake vacuum is sufficient.
■ the defrosting function is not activated 3 99.■ the self-cleaning function of the
diesel particle filter is not active
3 115.
■ the vehicle has moved since the last Autostop.
Otherwise an Autostop will be
inhibited.
Restart of the engine by the
driver
Depress the clutch pedal to restart the
engine.
Control indicator Ï 3 85 extinguishes
in the instrument cluster when the engine is restarted.
Restart of the engine by the
stop-start system
The selector lever must be in neutral
to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically
by the stop-start system:
■ The stop-start system is manually deactivated.
■ the bonnet is opened.■ the driver's seat belt is unfastened and the driver's door is opened.
■ the vehicle battery is discharged.
■ the engine temperature is too low.
■ the brake vacuum is not sufficient.
■ the vehicle starts to move.
■ the defrosting function is activated 3 99.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during engine restart may be
noticeable.
Fault If a fault occurs in the stop-start
system, the LED in button Î
illuminates, and a corresponding
message appears in the Driver
Information Centre 3 86. Seek the
assistance of a workshop.
Vehicle messages 3 87.
Warning chimes 3 87.
