Page 128 of 231

126Driving and operatingAutomatic Starter Control
This function controls the engine
starting procedure. The driver does
not need to hold the key in position 3.
Once applied, the system will go on
starting automatically until the engine
is running. Because of the checking
procedure, the engine starts running
after a short delay.
Possible reasons for a non-starting
engine:
● clutch pedal not operated (manual transmission)
● brake pedal not operated or selector lever not in P or N
(automatic transmission)
● timeout occurred
Turbo engine warm-up
Upon start-up, engine available
torque may be limited for a short time, especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but accelerator is released.
Stop-start system The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam. It starts the engine
automatically as soon as the clutch is
depressed. A battery sensor ensures
that an Autostop is only performed if
the battery is sufficiently charged for
a restart.
Activation
The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.Deactivation
Deactivate the stop-start system
manually by pressing Ï.
Deactivation is indicated when the
LED in the button extinguishes.
Autostop If the vehicle is at a low speed or at a
standstill, activate an Autostop as
follows:
● Depress the clutch pedal.
● Move the selector lever to neutral.
● Release the clutch pedal.
Page 136 of 231

134Driving and operatingCaution
It is not advisable to drive with thehand resting on the selector lever.
Stop-start system 3 126.
Drive systems
All-wheel drive
The All-Wheel Drive (AWD) system
enhances driving characteristics and
stability, and helps to achieve the best
possible driveability regardless of
ground surface. The system is always
active and cannot be deactivated.
The torque is distributed steplessly
between the wheels of the front and rear axle, depending on the driving
conditions. Additionally the torque
between the rear wheels is distributed depending on the surface.
For optimum system performance,
the vehicle's tyres should not have
varying degrees of wear.
When using a temporary spare
wheel, the AWD system is
automatically disabled.
The AWD system will also be
temporarily disabled to protect the
system from overheating if there is
excessive wheel spin. When the
system cools down, AWD will be
restored.The deactivation of the AWD system
will be indicated by a message on the
Driver Information Centre.
If a service message or warning
code S73 is displayed on the Driver
Information Centre, there is a
malfunction in the AWD system. Seek
the assistance of a workshop.
Vehicle messages 3 93, Towing the
vehicle 3 199.
Page 196 of 231

194Vehicle care
2. Fold out the wheel wrench andinstall ensuring that it locates
securely and loosen each wheel
nut by half a turn.
3. Ensure the jack is correctly positioned under the relevant
vehicle jacking point.
Depending on the equipment, first
remove the covers from the
jacking points.
4. Set the jack to the necessary height. Position it directly below
the jacking point in a manner that prevents it from slipping.
Attach wheel wrench and with the
jack correctly aligned rotate wheel wrench until wheel is clear of the
ground.
5. Unscrew the wheel nuts. 6. Change the wheel. Spare wheel 3 195.
7. Screw on the wheel nuts.
8. Lower the vehicle and remove jack.
9. Install the wheel wrench ensuring that it locates securely and tighten
each nut in a crosswise
sequence. Tightening torque is
140 Nm.
10. Align the valve hole in the wheel cover with the tyre valve before
installing.
Install wheel nut caps.
Install centre cap on alloy wheels.
11. Install vehicle jacking point cover on versions with sill panelling.
12. Stow the replaced wheel 3 195
and the vehicle tools 3 183.
13. Check the tyre pressure of the installed tyre and the wheel nut
torque as soon as possible.
Have the defective tyre renewed or
repaired as soon as possible.
Page 214 of 231
212Technical dataEngine dataEngine identifier code
A14NETB14NETA16XERA18XERB16DTH
100 kWB16DTH
81 kWSales designation1.41.4 LPG1.61.81.61.6Engineering codeA14NETB14NETA16XERA18XERB16DTHB16DTHPiston displacement [cm 3
]136413641598179615981598Engine power [kW]1031038510310081at rpm4900-60004900-6000620062003500-40003500Torque [Nm]200200155178320300at rpm1850-49001850-4900400038002000-22501750-2000Fuel typePetrolLiquid Gas/PetrolPetrolPetrolDieselDieselOctane rating RON 2)recommended95959595possible98989898possible91919191Additional fuel type–Liquid gas (LPG)––––2)
A country specific label at the fuel filler flap can supersede the engine specific requirement.