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No warning vibration occurs if:
R you clearly and actively steer, brake or
accelerate.
R you cut the corner on a sharp bend.
R a driving safety system intervenes, e.g.
ABS, BAS or ESP ®
.
R you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Lane-correcting brake application
If you leave your lane under certain
circumstances the vehicle will brake briefly
on one side. This is meant to assist you in
bringing the vehicle back to the original lane.
This function is available in the range between
40 mph and 120 mph (60 km/h to
200 km/h).
A lane-correcting brake application can only
be made after driving over a solid,
recognizable lane marking. Before this, a
warning must be given by means of
intermittent vibration in the steering wheel.
In addition, a lane with lane markings on both
sides must be recognized. The brake
application also slightly reduces vehicle
speed.
If a lane-correcting brake application occurs,
the following, for example, appears in the
multifunction display:
i A further lane-correcting brake
application can only occur after your
vehicle has returned to the original lane.
GWARNING
Active Lane Keeping Assist does not keep
your vehicle in its lane. It is only an aid
designed to assist driving. It is not a substitute
for attentive driving. In some cases, the lane-
correcting brake application is not sufficient
to bring your vehicle back to the original lane.
In such cases, you must steer the vehicle
yourself to ensure that it does not leave the
lane.
Active Lane Keeping Assist does not detect
road and traffic conditions. Always make sure
that there is sufficient distance to the side for
other traffic or obstacles. In rare cases,
unclear markings or particular structures on
the roadway can be recognized as solid lane
markings. An inappropriate brake application,
e.g. after intentionally driving over a solid lane
marking, may be interrupted at any time by
steering slightly in the opposite direction.
Active Lane Keeping Assist cannot take
weather conditions into account.
You are responsible for the driving at
appropriate speeds, braking in good time, and
steering correctly. Always adapt your driving
style to suit the prevailing road and weather
conditions. Always pay attention to traffic
conditions and your surroundings. Otherwise,
you may fail to recognize dangers in time,
cause an accident and injure yourself and
others.
No lane-correcting brake application occurs
if:
R you clearly and actively steer, brake or
accelerate.
R you cut the corner on a sharp bend.
R you switch on the turn signals.
R a driving safety system intervenes, e.g.
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist.
R you have adopted a sporty driving style with
high cornering speeds or high rates of
acceleration.
R ESP ®
is switched off.
R the transmission is not in position D.
R a loss of tire pressure or a defective tire has
been detected and displayed.Driving systems191Driving and parkingZ
Page 194 of 356
Active Lane Keeping Assist does not detect
traffic situations or road users. An
inappropriate brake application may be
interrupted at any time if you:
R steer slightly in the opposite direction.
R use a turn signal.
R clearly brake or accelerate.
A lane-correcting brake application is
interrupted automatically if:
R a driving safety system intervenes, e.g.
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist.
R lane markings can no longer be recognized.
Switching on Active Lane Keeping AssistXSwitch on Active Lane Keeping Assist using
the on-board computer ( Y page 205).
Symbol : appears in the multifunction
display.
If your speed exceeds 40 mph (60 km/h)
and lane markings are detected,
symbol : is shown in green. Active Lane
Keeping Assist is ready for use.192Driving systemsDriving and parking
Page 195 of 356
Useful information ............................194
Important safety notes ....................194
Displays and operation ....................194
Menus and submenus ......................198
Display messages ............................. 213
Warning and indicator lamps in the
instrument cluster ............................239193On-board computer and displays
Page 196 of 356

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops ( Y page 24).
Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance" section
( Y page 29).
GWARNING
A driver's attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions permit
it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h ), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
GWARNING
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see
information about your driving conditions,
such as
R speed
R outside temperature
R warning/indicator lamps
Rmalfunction/warning messages
R failure of any systems
Driving characteristics may be impaired.
If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.GWARNING
Malfunction and warning messages are only
indicated for certain systems and are
intentionally not very detailed. The
malfunction and warning messages are
simply a reminder with respect to the
operation of certain systems. They do not
replace the owner's and/or driver's
responsibility to maintain the vehicle's
operating safety. Have all required
maintenance and safety checks performed on
the vehicle. Bring the vehicle to an authorized
Mercedes-Benz Center to address the
malfunction and warning messages.
Displays and operation
Coolant temperature display
GWARNING
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until
the engine has cooled down.
The coolant temperature gauge is in the
instrument cluster on the left-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †).
194Displays and operationOn-board computer and displays
Page 197 of 356

! If the coolant temperature is too high a
display message is shown.
If the coolant temperature rises above
248 ‡(120 †), do not drive any further as
this could damage the engine.
Tachometer
The red band in the tachometer indicates the
engine's overrevving range.
! Do not drive in the overrevving range, as
this could damage the engine.
The fuel supply is interrupted to protect the
engine when the red band is reached.
Outside temperature display
The outside temperature display is in the
multifunction display ( Y page 196).
GWARNING
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
Changes in the outside temperature are
displayed after a short delay.
Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
Cruise control ( Y page 159) activated:
The segments light up from the stored speed
to the maximum speed.
DISTRONIC PLUS ( Y page 161) activated:
One or two segments in the set speed range
light up.
DISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the
vehicle in front and the stored speed light up.
Operating the on-board computer
Overview
The on-board computer is activated as soon
as you turn the SmartKey to position 1 in the
ignition lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.
:Multifunction display;To switch on the Voice Control System;
see the separate operating instructions=Right control panel?Left control panelABack buttonDisplays and operation195On-board computer and displaysZ
Page 198 of 356

Left control panel=
;R Calls up the menu and menu bar9
:Press briefly:
R Scrolls through lists
R Selects a submenu or function
R In the Audio menu: selects a
stored station, an audio track or
a video scene
R In the Tel (telephone) menu:
switches to the phone book and
selects a name or telephone
number9
:Press and hold:
R In the Audio menu: selects the
previous/next station or selects
an audio track or a video scene
using rapid scrolling
R In the Tel (telephone) menu:
starts rapid scrolling through the
phone bookaR Confirms a selection/display
message
R In the Tel (telephone) menu:
switches to the telephone book
and starts dialing the selected
number
R In the Audio menu: stops the
station search function at the
desired station
Right control panel
~R Rejects or ends a call
R Exits phone book/redial
memory6R Makes or accepts a call
R Switches to the redial memoryW
XR Adjusts the volume8RMute
Back button
%Press briefly:
R Back
R Switches off the Voice Control
System
R Hides display messages or calls
up the last Trip menu function
used
R Exits the telephone book/redial
memory%Press and hold:
R Calls up the standard display in
the Trip menu
Multifunction display
Values and settings as well as display
messages are shown in the multifunction
display.
:Description field;Menu bar=Drive program?Outside temperature or speed
( Y page 206)ATransmission position196Displays and operationOn-board computer and displays
Page 199 of 356
XTo show menu bar ;: press the =
or ; button on the steering wheel.
The following messages may appear in the
multifunction display:
X j YParking Guidance ( Y page 178)_Adaptive Highbeam Assist
( Y page 110)ÀATTENTION ASSIST ( Y page 182)ÃLane Keeping Assist ( Y page 185) or
Active Lane Keeping Assist
( Y page 190)HOLDHOLD function ( Y page 172)ÄPRE-SAFE ®
Brake ( Y page 65)Displays and operation197On-board computer and displaysZ
Page 200 of 356
Menus and submenus
Menu overview
The number of menus shown depends on the optional equipment in the vehicle.
Function:Trip menu ( Y page 199);Navi menu (navigation details) ( Y page 200)=Audio menu ( Y page 201)?Tel menu (telephone) ( Y page 202)ADriveAssist menu (assistance) ( Y page 204)BServ. menu ( Y page 206)
R calls up display messages ( Y page 213)
R tire pressure loss warning system (Canada only) ( Y page 317)
R tire pressure monitor ( Y page 319)
R ASSYST PLUS service interval display ( Y page 282)CSett. menu ( Y page 206)DAMG menu in AMG vehicles ( Y page 210)
The Audio and Tel menus differ slightly in vehicles with an audio system and vehicles with
COMAND. The examples given in this Operator's Manual apply to vehicles equipped with
COMAND.
198Menus and submenusOn-board computer and displays