steering MERCEDES-BENZ CLS 2017 Service Manual

When ATTENTION ASSIST has been deactivated,
it is automatically reactivated after the engine
has been stopped. The sensitivity selected cor-
responds to the last selection activated (stand-
ard/sensitive).
Warning in the multifunction display If fatigue or increasing lapses in concentration
are detected, a warning appears in the multi-
function display: Attention Assist: Take a
Break!
In addition to the display message shown in the
multifunction display, you will then hear a warn-
ing tone. X
If necessary, take a break. X
Confirm the display message with the v
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest. If you do not take
a break, you will be warned again after
15 minutes at the earliest. This will only happen
if ATTENTION ASSIST still detects typical indi-
cators of fatigue or increasing lapses in concen-
tration.
Vehicles with COMAND multifunction dis-
play: if a warning is output in the multifunction
display, a service station search is performed in
the multimedia system. You can select a service
station and navigation to this service station will
then begin. This function can be activated and
deactivated in the multimedia system.
Traffic Sign Assist
General notes Traffic Sign Assist displays the maximum speed
permitted to the driver in the instrument cluster.
The data and general traffic regulations stored in
the navigation system are used to determine the
current speed limit.
Traffic Sign Assist is a map-based system, and
for this reason, traffic signs put up temporarily
(e.g. near roadworks) are not detected. There is
also no display for changing traffic signs.
If a traffic sign that is relevant to your vehicle is
passed, the display of the speed limits is upda-
ted.
Traffic signs with a restriction indicated by an
additional sign (e.g. in wet conditions) are also
shown. The sign indicating the end of a restriction only
appears with the restriction in the instrument
cluster when: R
the regulation must be observed with the
restriction, or R
Traffic Sign Assist is unable to determine
whether the restriction applies
If Traffic Sign Assist is unable to determine a
maximum permitted speed from any of the avail-
able sources, no speed limit appears in the
instrument cluster either.
Traffic Sign Assist is not available in all coun-
tries. In this case, display C appears in the
assistance graphic ( Y
page 195).
Important safety notes Traffic Sign Assist is only an aid and is not always
able to correctly display speed limits. Traffic
signs always have priority over the Traffic Sign
Assist display.
The system may be either functionally impaired
or temporarily unavailable if the information in
the digital street map of the navigation system is
incorrect or out of date.
Instrument cluster display
Displaying the assistance graphic X
Call up the assistance graphics display func-
tion using the on-board computer
( Y
page 195).
Detected traffic signs are displayed in the
instrument cluster.178
Driving systems
Driving and parking

Lane Keeping Assist General notes
Lane Keeping Assist monitors the area in front of
your vehicle with camera C , which is mounted
at the top of the windshield. Active Lane Keeping
Assist detects lane markings on the road and
can warn you before you leave your lane unin-
tentionally.
This function is available in the range between
40 mph and 120 mph (60 km/h and 200 km/h).
A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of
intermittent vibration in the steering wheel for
up to 1.5 seconds.
Important safety notes
G WARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may: R
give an unnecessary warning R
not give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
G WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist. Lane Keeping Assist can neither reduce the risk
of an accident if you fail to adapt your driving
style nor override the laws of physics. Lane
Keeping Assist cannot take into account the
road, traffic and weather conditions. Lane Keep-
ing Assist is merely an aid. You are responsible
for maintaining a safe distance to the vehicle in
front, for vehicle speed, for braking in good time
and for staying in lane.
The Lane Keeping Assist does not keep the vehi-
cle in the lane.
The system may be impaired or may not function
if: R
there is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,
fog or spray R
there is glare, e.g. from oncoming traffic, the
sun or reflections (e.g. when the road surface
is wet) R
the windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera R
there are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
work R
the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow R
the distance to the vehicle in front is too small
and the lane markings t hus cannot be detec-
t ed R
the lane markings change quickly, e.g. lanes
branch off, cross one another or merge R
the road is narrow and winding R
there are strong shadows cast on the road
Switching on Lane Keeping Assist X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard or Adaptive ( Y
page 197).
If you drive at speeds above 40 mph
(60 km/ h) and lane markings are detected,
the lines in the assistance graphics display
( Y
page 195) are shown in green. Lane Keep-
ing Assist is ready for use.
Standard
If Standard is selected, no warning vibration
occurs if:Driving systems 181
Driving and parking Z

vehicle are also monitored with the aid of the
radar sensor system. Active Lane Keeping
Assist detects lane markings on the road and
can warn you before you leave your lane unin-
tentionally. If you do not react to the warning, a
lane-correcting application of the brakes can
bring the vehicle back into the original lane.
This function is available in the range between
40 mph and 120 mph (60 km/h and 200 km/h).
For Active Lane Keeping Assist to assist you
when driving, the radar sensor system must be
operational
Important safety notes If you fail to adapt your driving style, Active Lane
Keeping Assist can neither reduce the risk of
accident nor override the laws of physics. Active
Lane Keeping Assist cannot take account of
road and weather conditions. It may not recog-
nize traffic situations. Active Lane Keeping
Assist is only an aid. You are responsible for the
distance to the vehicle in front, for vehicle
speed, for braking in good time and for staying in
your lane.
Active Lane Keeping Assist cannot continuously
keep your vehicle in its lane.
G WARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can: R
give an unnecessary warning and then
make a course-correcting brake application
to the vehicle R
not give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention in a non-critical driv-
ing situation.
The system may be impaired or may not function
if: R
there is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,
fog or spray R
there is glare, e.g. from oncoming traffic, the
sun or reflections (e.g. when the road surface
is wet) R
the windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera R
the radar sensors in the front or rear bumpers
or the radiator trim are dirty, e.g. obscured by
snow R
there are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
work R
the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow R
the distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted R
the lane markings change quickly, e.g. lanes
branch off, cross one another or merge R
the road is narrow and winding R
there are strong shadows cast on the road
If no vehicle is detected in the adjacent lane and
broken lane markings are detected, no lane-cor-
recting brake application is made.
Warning vibration in the steering wheel A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of
intermittent vibration in the steering wheel for
up to 1.5 seconds.
Lane-correcting brake application
G WARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original
lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
G WARNING
Active Lane Keeping Assist only detects traf-
fic conditions or road users to a limited
extent. In very rare cases, the system may
make an inappropriate brake application, e.g.
after intentionally driving over a solid lane
marking. There is a risk of an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure thatDriving systems 185
Driving and parking Z

there is sufficient distance on the side for
other traffic or obstacles.
If you leave your lane, under certain circumstan-
ces the vehicle will brake briefly on one side.
This is meant to assist you in bringing the vehicle
back to the original lane.
If a lane-correcting brake application occurs,
display C appears in the multifunction display.
A lane-correcting brake application can be made
after driving over a lane marking recognize as
being solid or broken. 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 recog-
nized.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detected
in the adjacent lane. The following vehicles can
have an influence on brake application: oncom-
ing traffic, vehicles that are overtaking and vehi-
cles that are driving parallel to your vehicle.
i A further lane-correcting brake application
can only occur after your vehicle has returned
to the original lane.
No lane-correcting brake application occurs if: R
you clearly and actively steer, brake or accel-
erate. R
you cut the corner on a sharp bend. R
you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration. R
you have switched on the turn signal. R
a driving safety system intervenes, e.g. ESP ®
,
PRE-SAFE ®
Brake or Active Blind Spot Assist.R
ESP ®
is switched off.R
the transmission is not in position D .R
an obstacle has been detected in the lane in
which you are driving. R
when a loss of tire pressure or a defective tire
has been detected and displayed. There is a possibility that the Active Lane Keep-
ing Assist could misjudge the given traffic sit-
uation. An inappropriate brake application may
be interrupted at any time if you: R
steer slightly in the opposite direction. R
switch on the turn signal. R
clearly brake or accelerate.
A lane-correcting brake application is interrup-
ted 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 Assist X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard or Adaptive ( Y
page 197).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
( Y
page 195 )a re shown in green. Active Lane
Keeping Assist is ready for use.
If Standard is selected, no warning vibration
occurs if: R
you have switched on the turn signal. In this
event, the warnings are suppressed for a
certain period of time. R
a driving safety system intervenes, such as
ABS, BAS or ESP ®
.
When Adaptive
is selected, no warning vibra-
tion occurs if: R
you have switched on the turn signal. In this
event, the warnings are suppressed for a
certain period of time. R
a driving safety system intervenes, e.g.
ABS, BAS or ESP ®
.R
you accelerate hard, e.g. kickdown. R
you brake hard. R
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly. R
you cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if: R
you approach the outer lane marking on a
bend. R
the road has very wide lanes, e.g. a highway. R
the system recognizes solid lane markings.186
Driving systems
Driving and parking

You can reset the values of the following func-
tions: R
Trip odometer R
"From Start" trip computer R
"From Reset" trip computer R
ECO display
i If you reset the values in the ECO display,
the values in the "From Start" trip computer
are also reset. If you reset the values in the
"From Start" trip computer, the values in the
ECO display are also reset.
Navigation system menu
Displaying navigation instructions In the Navi menu, the multifunction display
shows navigation instructions.
Observe the additional information on naviga-
tion in the Digital Operator's Manual of the mul-
timedia system. X
Switch on the multimedia system. X
Press the Y or e button on the steering
wheel to select the Navi menu.
Route guidance not active
C
Direction of travelD
Current road
Route guidance active
No change of direction announced
C
Distance to destination
D
Distance to the next change of direction

able to complete the next two changes of direc-
tion without changing lane.
Other status indicators of the naviga-
tion system
The navigation system displays additional infor-
mation and the vehicle status.
Possible displays: R
New Route... or Calculating Route
A new route is calculated. R
Road Not Mapped
The vehicle position is inside the area of the
digital map but the road is not recognized, e.g.
newly built streets, car parks or private land. R
No Route
No route could be calculated to the selected
destination. R
K : you have reached the destination or an
intermediate destination.
Audio menu
Selecting a radio station
C
Active station list
D
Station frequency with memory position
The menu shows station D with station fre-
quency or station name. The preset position is
only displayed along with station D if this has
been stored. X
Switch on the multimedia system and select
Radio. X
Press the Y or e button on the steering
wheel to select the Audio menu. X
To select a preset list or station list: press
and briefly hold the c or d button until
the preset list or station list in the desired
frequency range is shown. X
To select a station: briefly press c
or d .
i SIRIUS XM satellite radio functions like a
normal radio.
For more information on radio operation, see
"Satellite radio" in the separate operating
instructions.
Operating an audio player or audio
media
Audio data from various audio devices or media
can be played, depending on the equipment
installed in the vehicle. X
Switch on the multimedia system and select
audio CD or MP3 mode. X
Press the Y or e button on the steering
wheel to select the Audio menu.X
To select the next/previous track: briefly
press the c or d button.X
To select a track from the track list (rapid
scrolling): press and hold the c or d
button until desired track C appears.
If you press and hold c or d , the rapid
scrolling speed is increased. Not all audio
drives or data carriers support this function.
If track information is stored on the audio
device or medium, the multifunction display
will show the number and title of the track.
Video DVD operationMenus and submenus 193
On-board computer and displays Z

Only for vehicles with a COMAND multimedia
system: you can use the Audio menu to play
video DVDs. X
Switch on the multimedia system and select
video DVD. X
Press the Y or e button on the steering
wheel to select the Audio menu.X
To select the next or previous scene:
briefly press the c or d button.X
To select a scene from the scene list
(rapid scrolling): press and hold the c
or d button until desired scene C
appears.
Telephone menu
Introduction
G WARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
When telephoning, you must observe the legal
requirements for the country in which you are
currently driving. X
Switch on the mobile phone (see the manu-
facturer’s operating instructions). X
Switch on the multimedia system. X
Establish a Bluetooth ®
connection to the mul-
timedia system (see Digital Operator's Man-
ual). X
Press the Y or e button on the steering
wheel to select the Tel menu.
You will see one of the following display mes-
sages in the multifunction display: R
Phone READY or the name of the network
provider: the mobile phone has found a net-
work and is ready to receive. R
Phone No Service : there is no network
available or the mobile phone is searching for
a network. Accepting a call If someone calls you when you are in the Tel
menu, a display message appears in the multi-
function display.
You can accept a call at any time regardless of
the menu selected. X
Press the a button on the steering wheel
to accept an incoming call.
Rejecting or ending a call X
Press the v button on the steering wheel
to reject or end a call.
Selecting an entry in the phone book X
Press the Y or e button on the steering
wheel to select the Tel menu.X
Press the c , d or v button to
switch to the phone book. X
Authorize access to the phone book on the
phone. X
Press the c or d button to select the
desired name.
or X
To start rapid scrolling: press and hold d
or c for longer than one second.
The names in the phone book are displayed
quickly one after the other.
Rapid scrolling stops when you release the
button or reach the end of the list. X
If only one telephone number is stored for
a name: press the a or v button to
start dialing.
or X
If there is more than one number for a
particular name: press the a or v
button to display the numbers. X
Press the c or d button to select the
number you want to dial. X
Press the a or v button to start dialing.
or X
To exit the telephone book: press the v
or 8 button.194
Menus and submenus
On-board computer and displays

Redialing The on-board computer saves the last names or
numbers dialed in the redial memory. X
Press the Y or e button on the steering
wheel to select the Tel menu.X
Press the a button to switch to the redial
memory. X
Press the c or d button to select the
desired name or number. X
Press the a or v button to start dialing.
or X
To exit the redial memory: press the v
or 8 button.
Assistance menu
Introduction Depending on the equipment installed in the
vehicle, you have the following options in the
DriveAssist menu:R
Displaying the assistance graphic
( Y
page 195) R
Deactivating/activating ESP ®
(except
Mercedes ‑ AMG vehicles) ( Y
page 195)R
Activating/deactivating Steering Assist and
Stop&Go Pilot of DISTRONIC PLUS
( Y
page 196) R
Activating/deactivating PRE-SAFE ®
Brake
( Y
page 196) R
Activating/deactivating COLLISION PREVEN-
TION ASSIST PLUS ( Y
page 196)R
Activating/deactivating ATTENTION ASSIST
( Y
page 196) R
Activating/deactivating Blind Spot Assist or
Active Blind Spot Assist ( Y
page 196)R
Activating/deactivating Lane Keeping Assist
or Active Lane Keeping Assist ( Y
page 197)
Displaying the assistance graphic X
Press the Y or e button on the steering
wheel to select the DriveAssist menu.X
Press c or d to select Assist.
Graphic . X
Press v to confirm.
The multifunction display shows the
DISTRONIC PLUS distance display in the
assistance graphic.
The assistance graphic shows you the status
and further information on the following driv-
ing systems or driving safety systems: R
Traffic Sign Assist ( Y
page 178)R
DISTRONIC PLUS ( Y
page 149)R
PRE-SAFE ®
Brake ( Y
page 72)R
COLLISION PREVENTION ASSIST PLUS
( Y
page 67) R
ATTENTION ASSIST ( Y
page 177)R
Lane Keeping Assist ( Y
page 181)R
Active Lane Keeping Assist ( Y
page 184)X
Press d to display the ATTENTION ASSIST
assessment.
Deactivating/activating ESP ®
i Observe the important safety notes on ESP ®
( Y
page 69).
G WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the follow-
ing situations: R
when using snow chains R
in deep snow R
on sand or gravel
Deactivating/activating ESP ®
on Mercedes-
AMG vehicles ( Y
page 71).
For further information about ESP ®
, see
( Y
page 69). X
Start the engine. X
Press the Y or e button on the steering
wheel to select the DriveAssist menu.X
Press c or d to select ESP .Menus and submenus 195
On-board computer and displays Z

For further information about Active Blind Spot
Assist, see ( Y
page 182).
Activating/deactivating Lane Keeping
Assist X
Press the Y or e button on the steering
wheel to select the DriveAssist menu.X
Press the c or d button to select
Lane Keep. Assist .X
Press the v button.
The current selection appears. X
Press v to confirm.X
Press the d or c button to set Off ,
Standard or Adaptive .X
Press the v button to save the setting.
For further information about Lane Keeping
Assist, see ( Y
page 181).
For further information about Active Lane Keep-
ing Assist, see ( Y
page 184).
Service menu Depending on the equipment installed in the
vehicle, you have the following options in the
Serv. menu:R
Calling up display messages in message
memory ( Y
page 203)R
Restarting the tire pressure loss warning sys-
tem ( Y
page 299)R
Checking the tire pressure electronically
( Y
page 299) R
Calling up the service due date
( Y
page 270)
Settings menu
Introduction Depending on the equipment installed in the
vehicle, In the Sett. menu you have the follow-
ing options: R
Changing the instrument cluster settings
( Y
page 197) R
Changing the light settings ( Y
page 198)R
Changing the vehicle settings ( Y
page 199)R
Changing the convenience settings
( Y
page 199) R
Restoring the factory settings ( Y
page 200) Instrument cluster Selecting the distance unit The Display Unit Speed-/Odometer: func-
tion allows you to choose whether certain dis-
plays appear in kilometers or miles in the mul-
tifunction display. X
Press the Y or e button on the steering
wheel to select the Sett. menu.X
Press the d or c button to select the
Instrument Cluster submenu.X
Press v to confirm. X
Press the d or c button to select the
Display Unit Speed-/Odometer function.
You will see the selected setting: km or miles .X
Press the v button to save the setting.
The selected unit of measurement for distance
applies to: R
the digital speedometer in the Trip menuR
the odometer and trip odometer R
the trip computer R
the current consumption and the range R
the navigation instructions in the Navi menuR
cruise control R
DISTRONIC PLUS R
ASSYST PLUS service interval display
Selecting permanent display The Permanent Display: function allows you
to choose whether the multifunction display
always shows the outside temperature or the
speed.
The speed display is inverse to the speedome-
ter. X
Press the Y or e button on the steering
wheel to select the Sett. menu.X
Press the d or c button to select the
Instrument Cluster submenu.X
Press v to confirm. X
Press the d or c button to select the
Permanent Display: function.
The current setting, Outside Temperature
or Speedometer [km/h] / Speedometer
[mph] , appears. X
Press the v button to save the setting.Menus and submenus 197
On-board computer and displays Z

Lights Setting the brightness of the instrument
cluster lighting and switches The lighting in the instrument cluster, in the dis-
plays and the controls in the vehicle interior can
be adjusted with the Brightness Display/
Switches: function.X
Press the Y or e button on the steering
wheel to select the Sett. menu.X
Press the d or c button to select the
Lights submenu.X
Press v to confirm.X
Press the d or c button to select the
Brightness Display/Switches: function.
The current setting appears. X
Press v to confirm.X
Press the d or c button to adjust the
brightness to any level from Level 1 to
Level 5 (bright).X
Press the v or 8 button to save the
setting.
If the light switch is set to the X , ` or
X position, the brightness is dependent
upon the brightness of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of the
multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated.
Switching the daytime running lamps on/
off X
Press the Y or e button on the steering
wheel to select the Sett. menu.X
Press the d or c button to select the
Lights submenu.X
Press v to confirm.X
Press the d or c button to select the
Day. Run. Lights function.
If the Day. Run. Lights function has been
switched on, the multifunction display shows
the cone of light and the