Preheating system / engine management
system
Vehicles with diesel engine:
The indicator lamp lights up yellow.
The indicator lamp in the instrument cluster
lights up for a few seconds when the diesel engine is being pre-heated.
The indicator lamp flashes yellow.
There is a fault in the engine management sys-
tem.
– The engine should be checked by a qualified
workshop as soon as possible.
No valid vehicle key detected
A corresponding display will appear in the instrument cluster.
The vehicle key may not be detected if the button cell in the key is discharged or too weak.
It is necessary to perform an emergency start:
– Depress and hold the brake pedal.
– Hold the vehicle key to the right of the steer-
ing column trim directly after pressing the
starter button → Fig. 132.
– The ignition is switched on automatically, and
in some cases the engine is started.
Engine cannot be switched off
The engine cannot be switched off by pressing
the starter button briefly.
It is necessary to perform an emergency switchoff:
– Press the starter button twice within a few
seconds or press and hold once.
The engine will switch off automatically
→
in
Starter button on page 145.
Engine cannot be started
A corresponding message appears on the instrument cluster display if an unauthorised vehicle
key is used, or in the event of a system fault.
– Use an authorised vehicle key.
– Seek expert assistance if the problem persists.
Start/stop system
Fig. 133 In the lower part of the centre console:
button for the start/stop system.
The start/stop system automatically switches the
engine off when the vehicle is coming to a stop
and when stationary. When required, the engine
restarts automatically.
Switching on the start/stop system
The function is automatically activated every
time the ignition is switched on. The instrument
cluster display will show information about the
current status.
Vehicles with a DSG® dual clutch gearbox may be
fitted with a start/stop system featuring ecocoasting. Eco-coasting is deactivated and activated in conjunction with the start/stop system.
Additional information about the start/stop
mode is available by pressing the
button or
function button and the
Vehicle, Selection
, and
Vehicle status
function buttons in the Infotainment system. This information also applies to
coasting.
Always switch off the start/stop system manually
when driving through water.
Indicator lamps
If the indicator lamp lights up, the start/stop
system is available and the automatic engine
stop is active.
If the indicator lamp lights up, the start/stop
system is not available, or the start/stop system
has started the engine automatically
→
page 149.
The display on the instrument cluster may show
the status of the start/stop system.
Owner's manual
148