Driving and operating183Do not use the cruise control if it is not
advisable to maintain a constant
speed.
Control indicator m 3 111.
Switching on the system
Press m; control indicator m in
instrument cluster illuminates white.
Activation of the functionality
Accelerate to the desired speed and
turn thumb wheel to SET/-, the
current speed is stored and
maintained. Control indicator m in
instrument cluster illuminates green.
On Mid- and Uplevel display m
illuminates green and set speed is
indicated. Accelerator pedal can be
released.
Vehicle speed can be increased by
depressing the accelerator pedal.
When the accelerator pedal is
released, the previously stored speed
is resumed.
Cruise control remains activated
while gearshifting.
Increase speed
With cruise control active, hold thumb
wheel turned to RES/+ or briefly turn
to RES/+ repeatedly: speed
increases continuously or in small
increments.
Alternatively accelerate to the desired speed and store by turning to SET/-.
Reduce speed With cruise control active, hold thumb
wheel turned to SET/- or briefly turn to
SET/- repeatedly: speed decreases
continuously or in small increments.
Deactivation of the functionality
Press y; control indicator m in
instrument cluster illuminates white.
On Mid- or Uplevel display m
changes to white.
Cruise control is deactivated, but not
switched off. Last stored speed
remains in memory for later speed
resume.
184Driving and operatingAutomatic deactivation:● Vehicle speed is below approx. 30 km/h.
● Vehicle speed drops more than 25 km/h below the set speed.
● The brake pedal is depressed.
● The clutch pedal is depressed for
a few seconds.
● The selector lever is in N.
● Engine speed is in a very low range.
● The Traction Control system or Electronic Stability Control is
operating.
● Parking brake is applied.
● Simultaneous pressing RES/+
and brake pedal deactivates
cruise control and will delete
stored speed.
Resume stored speed
Turn thumb wheel to RES/+ at a
speed above 30 km/h. The stored
speed will be obtained.Switching off the system
Press m, control indicator m in
instrument cluster extinguishes. The
stored speed is deleted.
Pressing L to activate the speed
limiter or switching off the ignition also
switches off cruise control and
deletes the stored speed.
Speed limiter
The speed limiter prevents the
vehicle exceeding a preset maximum
speed.
The maximum speed can be set at
speeds above 25 km/h up to
200 km/h.
The driver can only accelerate up to
the preset speed. Deviations from the
limited speed may occur when driving
downhill.
The preset speed limit is displayed in
the Driver Information Centre when
the system is active.Activation
Press L, symbol L illuminates in the
Driver Information Centre.
If cruise control has been activated
before, it is switched off when speed
limiter is activated and the control
indicator m extinguishes.
Set speed limit
Accelerate to the desired speed and
briefly turn thumb wheel to SET/-: the
current speed is stored as maximum speed.
On Baselevel display L and the
speed limit is displayed.
196Driving and operatingIf no action is performed while the
message is displayed, the last set offset will be used and the message
disappears after 3 seconds.
The new set speed including offset is displayed in the Driver Information
Centre.
System limitations
Intelligent adaptive cruise control has
the same limitations as the traffic sign assistant 3 220.
Implicit speed limits may be
considered with a delay, e.g. city entry, city exit, or motorway entry
signs.
The system may ignore a particular
traffic sign or use a wrong speed limit.
A new speed limit from the navigation may be taken over automatically after
a certain distance since the last
detected traffic sign or when entering
a new road segment, e.g. road exits
or round-abouts.Forward collision alert
The forward collision alert is part of
the forward collision system 3 124. It
can help to avoid or reduce the harm
caused by front-end crashes.
A vehicle ahead is indicated by the
control indicator A.
Additionally, the status of the forward
collision alert is indicated on the
Driver Assistance page in the Driver
Information Center 3 112.
If the vehicle is equipped with
conventional cruise control, the
forward collision alert uses the front
camera in the windscreen to detect a
vehicle directly ahead, in your path.
If the vehicle is equipped with
adaptive cruise control, the forward
collision alert uses the radar sensor
and front camera to detect a vehicle
directly ahead, in your path.
Forward collision alert with front
camera detects vehicles to distances
of approx. 60 m and operates
automatically at all speeds above
walking speed.Forward collision alert with radar
sensor detects vehicles to distances
of approx. 150 m and operates
automatically at all speeds above
walking speed.
Activation
A precondition is that forward collision
alert in the vehicle personalisation
menu is not deactivated 3 124.
Alerting the driver The vehicle ahead control indicator
A illuminates green in the instrument
cluster when the system has detected
a vehicle in the driving path. On
vehicles with head-up display, A is
projected on the windscreen.
The control indicator A changes to
amber when the distance to a
preceding moving vehicle gets too
small.Caution
The colour lighting of this control
indicator does not correspond to
local traffic laws on following
204Driving and operatingDetecting front pedestrian ahead
A pedestrian ahead up to a distance
of approx. 40 m is indicated by the
control indicator 7 in the instrument
cluster. On vehicles with head-up
display, 7 is projected on the
windscreen.
Front pedestrian alert
When approaching a detected
pedestrian too quickly, a red flashing
LED alert or the pop-up symbol 7 in
the head-up display is projected on the windscreen in the driver's field of
view. A warning chime is provided.
The brake system may prepare for
driver braking to occur more rapidly
which can cause a brief, mild
deceleration. Continue to apply the
brake pedal as required.
Cruise control or Adaptive cruise
control may be disengaged when the
Front pedestrian alert occurs.
Automatic braking If a crash into a pedestrian directly
ahead is imminent, and the brakes
have not been applied, Automatic
braking may automatically brake
moderately or brake hard. This can
help to avoid some very low speed
pedestrian crashes or reduce
pedestrian injury.
Automatic braking levels may be reduced under certain conditions,
such as higher speeds.If this happens, automatic braking
may engage the Electric parking
brake to hold the vehicle at a stop.
Release the parking brake. Pressing
the accelerator pedal will also release Automatic braking and Electric
parking brake 3 176.
This system includes Intelligent brake assist, and the Emergency automatic
braking system may also respond to
pedestrians.
Active emergency braking 3 200.
Automatic braking can be disabled in
the vehicle personalisation menu
3 124.
General information9 Warning
The driver must always be ready
to take action and apply the brakes and steer to avoid collisions.
Driving and operating225Note
The system is switched off during
detection of ambiguous lane
markings, e.g. in construction areas.
Note
The system may be switched off if it
detects lanes which are too narrow,
too wide or too curved.
Activation
The lane keep assist is activated by
pressing a. The LED in the button
illuminates to indicate that the system
is switched on.
When the control indicator a in the
instrument cluster or in the head-up
display illuminates green, the system
is ready to assist.
The system is operational at vehicle
speeds between 60 km/h and
180 km/h and if lane markings are
available.
The system gently turns the steering
wheel and the control indicator a
changes to yellow, if the vehicle
approaches a detected lane marking
without using the turn lights in that
direction.
The system alerts by flashing a
together with three chimes, from the respective direction, if the lane is
departed significantly.
The system is only operable when a
lane marking is detected.
If the system only detects lane
markings on one side of the road, it
will only assist for this side.
Lane keep assist detects hands-free
driving. In this case a message in the
Driver Information Centre pops-up
and a chime sounds as long as lane
keep assist detects hands-free
driving.
Indication on Driver Assistance page
If the system is active but one or both
lanes are not detected, they appear
as a line of hollow dashes, as shown
on the right side of the vehicle in the
graphic above.
Vehicle care281UnderbodySome areas of the vehicle underbody
have a PVC undercoating while other
critical areas have a durable
protective wax coating.
After the underbody is washed, check the underbody and have it waxed if
necessary.
Bitumen / rubber materials could
damage the PVC coating. Have
underbody work carried out by a
workshop.
Before and after winter, wash the
underbody and have the protective
wax coating checked.
Liquid gas system9 Danger
Liquid gas is heavier than air and
can collect in sink points.
Take care when performing work
at the underbody in a pit.
For painting work and when using a
drying booth at a temperature above
60 °C, the liquid gas tank must be
removed.
Do not make any modifications to the
liquid gas system.
Towing equipment
Do not clean the coupling ball bar with a steam-jet or high-pressure jet
cleaner.
Air shutter Clean the shutter system in the front
bumper to maintain correct
functionality.
Interior care
Interior and upholstery Only clean the vehicle interior,
including the instrument panel fascia
and panelling, with a dry cloth or
interior cleaner.
Clean the leather upholstery with
clear water and a soft cloth. In case of
heavy soiling, use leather care.The instrument cluster and the
displays should only be cleaned using a soft damp cloth. If necessary use aweak soap solution.
Clean fabric upholstery with a
vacuum cleaner and brush. Remove
stains with an upholstery cleaner.
Clothing fabrics may not be
colourfast. This could cause visible
discolourations, especially on light-
coloured upholstery. Removable
stains and discolourations should be
cleaned as soon as possible.
Clean seat belts with lukewarm water
or interior cleaner.Caution
Close Velcro fasteners as open
Velcro fasteners on clothing could damage seat upholstery.
The same applies to clothing with
sharp-edged objects, like zips or
belts or studded jeans.
318HHalogen headlights ....................244
Hand brake ................................. 175
Hazard warning flashers ............139
Headlight flash ........................... 137
Headlight range adjustment ......137
Headlights................................... 134
Headlights when driving abroad 137
Head restraint adjustment .............8
Head restraints ............................ 45
Head-up display.......................... 120 Heated mirrors ............................. 38
Heated rear window ..................... 42
Heated steering wheel .................88
Heated windscreen .......................42
Heating .................................. 54, 55
High beam ......................... 110, 135
High beam assist ................110, 135
Hill start assist ........................... 177
Horn ....................................... 14, 89
I
Identification plate .....................286
Immobiliser .......................... 36, 110
Indicators .................................... 101
Inductive charging ........................94
Info Display ................................. 118
Instrument cluster ........................96
Instrument panel fuse box .........258Instrument panel illumination
control .................................... 141
Instrument panel overview ........... 10
Interactive driving system ...........180
Interior care ............................... 281
Interior lighting ............................ 141
Interior lights ...................... 142, 254
Interior mirrors .............................. 39
Interruption of power supply ......173
Introduction .................................... 3
J
Jump starting ............................. 275
K Key, memorised settings ..............25
Keys ............................................. 20
Keys, locks ................................... 20
L
Lane change alert .......................213
Lane keep assist ................108, 224
Lashing eyes ............................... 80
LED headlights ...........110, 138, 246
Lighting features .........................143
Light switch ................................ 134
Load compartment ................29, 75
Load compartment cover .............78
Loading information .....................85
Low fuel ..................................... 110M
Malfunction indicator light ..........107
Manual anti-dazzle ......................39
Manual mode ............................. 171
Manual seat adjustment ...............48
Manual transmission .................. 174
Massage ....................................... 55
Memorised settings ......................25
Midlevel display .......................... 112
Mirror adjustment ........................... 8
Misted light covers .....................141
N New vehicle running-in ..............158
Number plate light .....................254
O Object detection systems ...........205
Odometer ................................... 102
Oil, engine .......................... 284, 288
OnStar ........................................ 129
Outside temperature ....................92
Overrun cut-off ........................... 162
P
Panoramic view system ..............215
Parking ................................ 19, 164
Parking assist ...................... 39, 205
Parking brake ............................ 176
Parking lights ............................. 141
Particulate filter ........................... 165