Driving
of electrical energy. This significantly improves
reliability when starting the engine, and also pro-
longs the life of the vehicle battery.
available, for example. Please note any further
messages in the instrument cluster.
Start/stop system
Note
Description
Applies to: vehicles with start/stop system
– If the vehicle is driven frequently on short
trips, the battery may not be sufficiently
charged while driving. In this case, certain
convenience functions for electrical equip-
ment may be temporarily unavailable.
– If the vehicle is left standing for long peri-
ods, or if electrical equipment is used with-
out running the engine, the battery will
gradually lose its charge. To ensure that the
vehicle can be started, the electrical equip-
ment is powered back or switched off.
The start/stop system can help to save fuel and
reduce CO emissions. In start/stop mode, the
2
engine is switched off automatically when the ve-
hicle stops, e.g. at traffic lights.
If certain conditions are met, the engine may be
switched off before the vehicle has come to a
standstill. If the accelerator pedal is pressed in
this case, the engine starts and delivers power
again.
The ignition and important supporting systems,
e.g. the brake servo, remain available during the
stop phase. The engine is automatically started
on demand.
Driver messages
The following driver messages may appear, de-
pending on the equipment installed in your vehi-
cle:
The start/stop system is automatically activated
each time you switch on the ignition.
Drive system: fault. Safely stop vehicle
A malfunction has occurred in the drive system.
The brake servo and the power steering system
could stop working. Stop your vehicle as soon as
possible. Do not drive on. Before leaving the vehi-
cle, secure it to prevent it from rolling away
ðpage 112. You should have the fault rectified
by a qualified workshop.
Switching the start/stop system off and on
The button is located in the centre console
above the selector lever. The button lights up
when the function is switched off.
►
Press to switch the function on/off.
If you switch off the system during a stop phase,
the engine will start again automatically.
Drive system: fault. Please contact work-
shop
Basic conditions
A malfunction has occurred in the drive system.
The power output is limited. Drive slowly to a
qualified workshop and have the fault rectified.
– The driver's door and bonnet must be closed.
– Transmission position P, N or D must be selec-
ted.
Vehicle sound: fault. Vehicle inaudible to pe-
– The steering wheel must be relatively straight.
– The vehicle must have been moving at over
3 km/h since the last stop.
destrians. Please contact workshop
A vehicle sound fault has occurred. Drive ex-
tremely carefully, as other road users may not be
able to hear the vehicle under electric power.
Drive to a qualified workshop without delay and
have the fault rectified.
CAUTION
Always switch off the start/stop system
ðpage 122 before driving through water.
Further indicator lamps
If lights up, the driving performance is re-
stricted as the combustion engine may not be
122
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