Climate control135Cooling A/C
Press A/C to switch on cooling.
Activation is indicated by illumination
of the LED in the button. Cooling is
only functional when the engine is
running and climate control fan is switched on.
Press A/C again to switch off cooling.
The air conditioning system cools and
dehumidifies (dries) when outside
temperature is above a specific level. Therefore condensation may form
and drip from under the vehicle.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons. When the cooling
system is switched off, no engine
restart will be requested by the
climate control system during an
Autostop. Exception: defrost system
is activated and outside temperature
above 0 °C requests a restart.
The display will indicate A/C ON when
cooling is activated or A/C OFF when
the cooling is deactivated.
Activation or deactivation of cooling
operation after engine start can be
changed in the Settings menu in the
Info-Display. Vehicle personalisation
3 106.
Manual air recirculation 4Press 4 to activate the air
recirculation mode. Activation is
indicated by illumination of the LED in
the button.
Press 4 again to deactivate
recirculation mode.9 Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up from inside.
The quality of the passenger
compartment air deteriorates,
which may cause the vehicle
occupants to feel drowsy.
In warm and very humid ambient air conditions, the windscreen may mist
up from outside, when cold air is
directed towards it. If windscreen
mists up from outside, activate
windscreen wiper and deactivate l.
138Driving and operatingDriving and
operatingDriving hints ............................... 139
Control of the vehicle ...............139
Steering ................................... 139
Starting and operating ...............139
New vehicle running-in ............139
Ignition switch positions ...........139
Power button ........................... 140
Retained power off ..................141
Starting the engine ..................142
Overrun cut-off ........................ 144
Stop-start system ....................144
Parking .................................... 147
Engine exhaust .......................... 148
Diesel particle filter ..................148
Catalytic converter ...................149
Automatic transmission ..............150
Transmission display ...............150
Selector lever .......................... 150
Manual mode ........................... 151
Electronic driving programmes 152
Fault ........................................ 152
Interruption of power supply ....152
Manual transmission ..................153Manual transmission automa‐
ted .............................................. 154
Transmission display ...............154
Selector lever .......................... 154
Manual mode ........................... 155
Electronic driving programmes 156
Fault ........................................ 156
Brakes ........................................ 156
Antilock brake system .............156
Parking brake .......................... 157
Brake assist ............................. 159
Hill start assist ......................... 159
Ride control systems .................159
Traction Control system ..........159
Electronic Stability Control ......160
Sport mode .............................. 162
Driver assistance systems .........162
Cruise control .......................... 162
Speed limiter ........................... 164
Forward collision alert .............166
Following distance indication ...168
Active emergency braking .......169
Parking assist .......................... 170
Side blind spot alert .................178
Rear view camera ...................179
Traffic sign assistant ................181
Lane keep assist .....................185
Fuel ............................................ 187
Fuel for petrol engines .............187Fuel for diesel engines ............187
Refuelling ................................ 188
Fuel consumption - CO 2-
Emissions .............................. 189
Trailer hitch ................................ 190
General information .................190
Driving characteristics and towing tips .............................. 190
Trailer towing ........................... 190
Towing equipment ...................191
Trailer stability assist ...............193
140Driving and operating0:ignition off: Some functions
remain active until key is
removed or driver's door is
opened, provided the ignition was
on previously1:accessory power mode: Steering wheel lock released, some
electrical functions are operable,
ignition is off2:ignition on power mode: Ignition
is on, diesel engine is preheating.
Control indicators illuminate and
most electrical functions are
operable3:engine start: Release key after
starting procedure beginsSteering wheel lock
Remove key from ignition switch and
turn steering wheel until it engages.9 Danger
Never remove the key from
ignition switch during driving as
this will cause steering wheel lock.
Power button
Electronic key must be inside the
vehicle.
Accessory power mode
Press Engine Start/Stop once without
operating clutch or brake pedal. The yellow LED in the button illuminates.
Steering wheel lock is released and
some electrical functions are
operable, ignition is off.Ignition on power mode
Press and hold Engine Start/Stop for
6 seconds without operating clutch or brake pedal. The green LED in the
button illuminates, diesel engine is
preheating. Control indicators
illuminate and most electrical
functions are operable.Engine start
Operate clutch pedal (manual
transmission) or brake pedal
(automatic transmission or manual
transmission automated) and press
Engine Start/Stop once more.
Release button after starting
procedure begins.Ignition off
Press Engine Start/Stop briefly in
each mode or when engine is running and vehicle is stationary. Some
Driving and operating141functions remain active until driver's
door is opened, provided the ignition
was on previously.Emergency shut off during driving
Press Engine Start/Stop for longer
than 2 seconds or press twice briefly within 5 seconds 3 142.
Steering wheel lock
The steering wheel lock activates
automatically when:
● The vehicle is stationary.
● The ignition has been switched off.
● The driver's door is opened.
To release steering wheel lock, open
and close driver's door and switch on accessory mode or start the engine
directly.
9 Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the
battery of the electronic key is weak,
the Driver Information Centre may
display No Remote Detected or
Replace Battery in Remote Key when
you try to start the vehicle.
Place the electronic key solely
centred in the transmitter area in
longitudinal direction flat with buttons
upside as shown in the illustration.
Other objects, e.g. other keys,
transponder, tags, coins etc. must be removed from the centre console.
Depress the clutch pedal (manual
transmission) or the brake pedal
(automatic transmission or manual
transmission automated) and press
Engine Start/Stop .
To switch off the engine, press
Engine Start/Stop again. Remove the
electronic key from the centre
console.
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 21.
For unlocking or locking the doors,
see fault in radio remote control unit
or electronic key system 3 23.
Retained power off
The following electronic systems can
work until the driver's door is opened
or for 10 minutes after the ignition is
switched off:
● power windows
● sunroof
● power outlets
142Driving and operatingStarting the engine
Vehicles with ignition switch
Turn key to position 1 to release the
steering wheel lock.
Manual transmission: operate clutch
and brake pedal.
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
Manual transmission automated:
operate brake pedal.
Do not operate accelerator pedal.
Diesel engines: turn the key to
position 2 for preheating and wait until
control indicator ! extinguishes.
Turn key briefly to position 3 and
release: an automatic procedure operates the starter with a short delay
until the engine is running, see
Automatic Starter Control.
Manual transmission: during an
Autostop, the engine can be started
by depressing the clutch pedal
3 144.
Automatic transmission or manual
transmission automated: during an
Autostop, the engine can be started
by releasing the brake pedal 3 144.Vehicles with power button
Manual transmission: operate clutch
and brake pedal.
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
Manual transmission automated:
operate brake pedal.
Do not operate accelerator pedal.
Press and release Engine Start/Stop:
an automatic procedure operates the
starter with a short delay until the
engine is running, see automatic
starter control.
144Driving and operatingOverrun 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.
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 OFF . The
deactivation is indicated when the
LED in the button illuminates.
Autostop
Vehicles with manual transmission
Depending on the engine, two
versions of an Autostop are available. See engine data to identify the engine
identifier code for your vehicle
3 247.
Conventional AutostopAll petrol engines and diesel engines
except B16DTU have only the
conventional Autostop.
An Autostop can be activated at a
standstill or at a low speed up to
3 mph.
Activate a conventional Autostop as
follows:
● Depress the clutch pedal.
● Set the lever in neutral.
● Release the clutch pedal.
The engine will be switched off while the ignition stays on.
Early Autostop
Engine B16DTU has early Autostop
in addition to conventional Autostop.
An Autostop, both conventional and
early, can be activated at a standstill
or at a low speed up to 9 mph.
Activate an early Autostop as follows: ● Depress the brake pedal.
● Depress the clutch pedal.
The engine will be switched off while
the ignition stays on.
148Driving and operatingEmergency operation under
extreme cold temperatures9 Warning
This emergency operation may
only be carried out in case of
extremely cold temperatures and if the vehicle is parked on a levelsurface.
In countries with extreme cold
temperatures it may be necessary to
park the vehicle without applied
parking brake.
This is an emergency operation to
avoid freezing of the parking brake.
Vehicles equipped with manual
transmission automated, electric
parking brake and power button
On vehicles with manual transmission
automated the ignition can only be
switched off if the parking brake is
applied. Therefore the following items must be carried out to release the
electric parking brake:
1. Apply electric parking brake and switch off ignition.
2. Switch on ignition by pressing and
holding Engine Start/Stop for
6 seconds without operating
brake pedal.
3. Press brake pedal and release electric parking brake.
4. Switch off ignition.Engine exhaust9 Danger
Engine exhaust gases contain
poisonous carbon monoxide,
which is colourless and odourless and could be fatal if inhaled.
If exhaust gases enter the interior
of the vehicle, open the windows.
Have the cause of the fault
rectified by a workshop.
Avoid driving with an open load
compartment, otherwise exhaust
gases could enter the vehicle.
Diesel particle filter
The diesel particle filter system filters
harmful soot particles out of the
exhaust gases. The system includes
a self-cleaning function that runs
automatically during driving without
any notification. The filter is cleaned
by periodically burning off the soot
particles at high temperature. This
process takes place automatically
under set driving conditions and may
take up to 25 minutes. Typically it
Driving and operating153
3. Insert a small stick (e.g. a pen orscrew driver) into the opening
near the selector lever. Push
down the the stick vertically and
move the selector lever out of P. If
this position is engaged again, the
selector lever will be locked again. Have the cause of the power
supply interruption remedied by a
workshop.
4. Mount the selector lever trim onto
the centre console and refit.
Manual transmission
To engage reverse, depress the
clutch pedal and then press the
release button on the selector lever
and engage the gear.
If the gear does not engage, set the
lever to neutral, release the clutch
pedal and depress again; then repeat
gear selection.
Do not slip the clutch unnecessarily.
When operating, depress the clutch
pedal completely. Do not use the
pedal as a foot rest.
Caution
It is not advisable to drive with the hand resting on the selector lever.
Gear shift indication 3 94.
Stop-start system 3 144.