lane assist MERCEDES-BENZ CLS 2016 Owners Manual

1, 2, 3 ... 4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent all-wheel
drive)
Function/notes ............................ .1 69
12 V socket
see Sockets
360° camera
Cleaning ......................................... 283
Display in the multimedia system .. 183
Function/notes ............................ .1 81
A ABS (Anti-lock Braking System)
Display message ............................ 213
Function/notes ................................ 64
Important safety notes .................... 64
Warning lamp ................................. 238
Accident
Automatic measures after an acci-
dent ................................................. 58
Activating media mode
General notes ................................ 250
Activating/deactivating cooling
with air dehumidification ................. 120
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 205
Display message ............................ 226
Function/information .................... 190
Active Driving Assistance package .. 190
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 205
Display message ............................ 226
Function/information .................... 193
Active multicontour seat
Adjusting (on the seat) ..................... 98
Active Parking Assist
Detecting parking spaces .............. 174
Display message ............................ 227
Exiting a parking space .................. 176
Function/notes ............................. 173
Important safety notes .................. 173 Parking .......................................... 175
ADAPTIVE BRAKE ................................. 72
Adaptive Brake Assist
Function/notes ................................ 68
Adaptive Damping System (ADS) ..... 167
Adaptive Highbeam Assist
Display message ............................ 221
Function/notes ............................. 109
Switching on/off ........................... 110
Additives (engine oil) ........................ 334
Address book
see also Digital Operator's Man-
ual .................................................. 245
Adjusting the volume
Audio 20 ........................................ 246
COMAND ....................................... 246
Air bags
Deployment ..................................... 53
Display message ............................ 219
Front air bag (driver, front
passenger) ....................................... 47
Important safety notes .................... 46
Introduction ..................................... 46
Knee bag .......................................... 47
Occupant Cla ssification System
(
OCS) ............................................... 49
PASSENGER AIR BAG OFF indica-
tor lamp ........................................... 42
Pelvis air bag ................................... 48
Side impact air bag .......................... 48
Window curtain air bag .................... 49
AIR FLOW ........................................... 121
Air vents
Glove box ....................................... 125
Important safety notes .................. 125
Setting ........................................... 125
Setting the side air vents ............... 125
Air-conditioning system
see Climate control
AIRMATIC
Display message ............................ 224
Function/notes ............................. 166
Alarm
ATA (Anti-Theft Alarm system) ......... 75
Switching off (ATA) .......................... 75
Switching the function on/off
(ATA) ................................................ 75 Index 3

Central locking/unlocking
(SmartKey) ...................................... .7 6
Control panel .................................. .4 0
Display message ............................ 233
Emergency locking ........................... 83
Emergency unlocking ....................... 83
Important safety notes .................... 81
Opening (from inside) ...................... 81
Drinking and driving ......................... 149
Drive program
Automatic ...................................... 139
Display ........................................... 134
Display (DIRECT SELECT lever) ...... 135
Manual ........................................... 140
Manual (Mercedes-AMG vehi-
cles) ............................................... 141
Manual (vehicles with Sports
package AMG) ............................... 141
SETUP (on-board computer) .......... 209
Drive program selector ..................... 139
Driver's door
see Doors
Driving abroad
Mercedes-Benz Service ................. 278
Driving on flooded roads .................. 152
Driving safety systems
ABS (Anti-lock Braking System) ....... 64
ADAPTIVE BRAKE ............................. 72
Adaptive Brake Assist ...................... 68
BAS (Brake Assist System) .............. 65
BAS PLUS with Cross-Traffic
Assist ............................................... 65
COLLISION PREVENTION ASSIST
PLUS ................................................ 67
Distance warning function ............... 67
EBD (electronic brake force distri-
bution) ............................................. 72
ESP ®
(Electronic Stability Pro-
gram) ............................................... 69
Important safety information ........... 64
Overview .......................................... 64
PRE-SAFE ®
Brake ............................. 73
Driving system
RACE START (Mercedes-AMG
vehicles) ........................................ 165
Driving systems
360°camera .................................. 181 Active Blind Spot Assist ................. 190
Active Driving Assistance pack-
age ................................................. 190
Active Lane Keeping Assist ............ 193
Acti ve
Parking Assist ..................... 173
AIRMATIC ...................................... 166
AMG adaptive sport suspension
system ........................................... 167
ATTENTION ASSIST ........................ 184
Blind Spot Assist ............................ 187
Cruise control ................................ 153
Display message ............................ 224
DISTRONIC PLUS ........................... 155
DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot ............... 162
HOLD function ............................... 164
Lane Keeping Assist ...................... 189
Lane Tracking package .................. 187
PARKTRONIC ................................. 170
Rear view camera .......................... 177
Traffic Sign Assist .......................... 186
Driving tips
AMG ceramic brakes ..................... 151
Automatic transmission ................. 137
Brakes ........................................... 150
Break-in period .............................. 126
Downhill gradient ........................... 150
Drinking and driving ....................... 149
Driving in winter ............................. 152
Driving on flooded roads ................ 152
Driving on wet roads ...................... 152
Exhaust check ............................... 149
Fuel ................................................ 149
General .......................................... 148
Hydroplaning ................................. 152
Icy road surfaces ........................... 152
Limited braking efficiency on sal-
ted roads ....................................... 151
Snow chains .................................. 303
Wet road surface ........................... 151
DVD video
Operating (on-board computer) ..... 202
see also Digital Operator's Man-
ual .................................................. 2458
Index

LLamps
see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................ .2 05
Display message ............................ 226
Function/information .................... 189
Lane Tracking package ..................... 187
Lap time (RACETIMER) ...................... 210
LATCH-type (ISOFIX) child seat
anchors ................................................ 60
License plate lamp (display mes-
sage) ................................................... 221
Light function, active
Display message ............................ 221
Light sensor (display message) ....... 221
Lights
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 207
Adaptive Highbeam Assist ............. 109
Automatic headlamp mode ............ 107
Cornering light function ................. 109
Hazard warning lamps ................... 109
High beam flasher .......................... 108
High-beam headlamps ................... 108
Light switch ................................... 107
Low-beam headlamps .................... 108
Parking lamps ................................ 108
Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 206
Setting the brightness of the dis-
play/switch (on-board computer) .. 206
Setting the color of the ambient
lighting (on-board computer) ......... 207
Standing lamps .............................. 108
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 206
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 207
Switching the surround lighting
on/off (on-board computer) .......... 207
Turn signals ................................... 108
see Interior lighting
Loading guidelines ............................ 251 Locking
see Central locking
Locking (doors)
Automatic ........................................ 82
Emergency locking ........................... 83
From inside (centra l locking but-
to
n) .................................................. 82
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 208
Low-beam headlamps
Display message ............................ 221
Switching on/off ........................... 108
Lumbar support
Adjusting the 4-way lumbar sup-
port .................................................. 98
Luxury head restraints ....................... 96
M M+S tires ............................................ 303
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions) .................................................. 281
mbrace
Call priority .................................... 266
Display message ............................ 215
Downloading destinations
(COMAND) ..................................... 266
Downloading routes ....................... 269
Emergency call .............................. 264
General notes ................................ 263
Geo fencing ................................... 269
Locating a stolen vehicle ............... 268
MB info call button ........................ 265
Remote fault diagnosis .................. 268
Remote vehicle locking .................. 268
Roadside Assistance button .......... 265
Search & Send ............................... 267
Self-test ......................................... 263
Speed alert .................................... 269
System .......................................... 263
Triggering the vehicle alarm ........... 269
Vehicle remote unlocking .............. 267
Mechanical key
Function/notes ................................ 7812
Index

General notes .................................. 78
Inserting .......................................... 78
Locking vehicle ................................ 83
Removing ........................................ .7 8
Unlocking the driver's door .............. 83
Media Interface
USB port in the armrest of the
center console .............................. .2 53
see Separate operating instructions
Memory card (audio) ......................... 201
Memory function ............................... 105
Mercedes-Benz Intelligent Drive
360°camera .................................. 181
Active Blind Spot Assist ................. 190
Active Lane Keeping Assist ............ 193
Active Parking Assist ..................... 173
ATTENTION ASSIST ........................ 184
Blind Spot Assist ............................ 187
Cruise control ................................ 153
DISTRONIC PLUS ........................... 155
DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot .............. .1 62
General notes ................................ 153
Lane Keeping Assist ..................... .1 89
PARKTRONIC ................................. 170
PRE-SAFE ®
(anticipatory occu-
pant protection) ............................... 56
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS) .............. 57
Rear view camera .......................... 177
Traffic Sign Assist .......................... 186
Message memory (on-board com-
puter) ................................................. .2 12
Messages
see Display messages
Mirrors
see Exterior mirrors
see Vanity mirror (in the sun visor)
Mobile phone
Connecting (Bluetooth ®
inter-
face) .............................................. 248
Connecting another mobile
phone ............................................ 250
Frequencies ................................... 329
Installation ............................ ......... 329
Menu (on-board computer) ............ 202
Tra nsmi
ssion output (maximum) .... 329 Modifying the programming
(SmartKey) .......................................... .7 7
MOExtended tires .............................. 287
Mounting wheels
Lowering the vehicle ...................... 324
Mounting a new wheel ................... 324
Preparing the vehicle .................... .3 21
Raising the vehicle ......................... 322
Removing a wheel .......................... 323
Securing the vehicle against roll-
ing away ........................................ 321
MP3
Operation ....................................... 201
see also Digital Operator's Man-
ual ................................................. .2 45
Multicontour seat
Adjusting (on the seat) ..................... 97
Multifunction display
Function/notes ............................ .1 98
Permanent display ......................... 206
Multifunction steering wheel
Operating the on-board computer .. 197
Overview .......................................... 35
Multimedia system
see Separate operating instructions
Music files
see also Digital Operator's Man-
ual ................................................. .2 45
N
Navigation
Menu (on-board computer) ............ 200
see also Digital Operator's Man-
ual ................................................. .2 45
NECK-PRO head restraints
Operation ......................................... 55
Resetting triggered .......................... 56
NECK-PRO luxury head restraints
Important safety notes .................... 55
Operation ......................................... 55
Resetting when triggered ................. 56
Notes on breaking-in a new vehi-
cle ....................................................... 126 Index 13

Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box.
Driving safety systems
Overview of driving safety systems In this section, you will find information about
the following driving safety systems: R
ABS ( A nti-lock B raking S ystem)
( Y
page 64)R
BAS ( B rake A ssist S ystem) ( Y
page 65)R
BAS PLUS ( B rake A ssist S ystem PLUS) with
Cross-Traffic Assist ( Y
page 65)R
COLLISION PREVENTION ASSIST PLUS
( Y
page 67)R
ESP ®
( E lectronic S tability P rogram)
( Y
page 69)R
EBD ( E lectronic B rake force D istribution)
( Y
page 72)R
ADAPTIVE BRAKE ( Y
page 72)R
PRE-SAFE ®
Brake ( Y
page 73)
Important safety notes If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override
the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front, for vehicle speed, for braking in
good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and
weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Please pay special attention to the
notes on tires, recommended minimum tire
tread depths, etc. ( Y
page 301).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible. ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 64).
G WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 238) and dis-
play messages which may be shown in the
instrument cluster ( Y
page 213).
Braking X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking sit-
uation is over. X
To make a full brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions, and functions as a
reminder to take extra care while driving.64
Driving safety systems
Safety

Changes in the out side temperature are dis-
played after a short delay.
Indic ated temperatures just above the freezing
poin t do not guarantee that the road surface is
free of ice. The road may st ill be icy, especially in
wooded areas or on brid ges. The veh icle could
sk id if you fail to adapt your driv ing style. Alwa ys
adapt your driv ing style and driv e at a speed to
suit the pre vailin g weather conditions.
You should pay special attention to road condi-
tions when temperatures are around freezing
poin t.
For more information on driv ing wit h snow
chains, see ( Y
page 303).
For more information on driv ing wit h summer
tires, see ( Y
page 303).
Observe the notes in the "Win ter operation" sec-
tion ( Y
page 303).
Driving systems
Mercedes-Benz Intelligent Drive Mercedes-Benz In te lligen t Drive stands for inno-
vative driv er assistance and safety systems
whic h enhance comfort and support the driv er in
critical situations. With these int ellige nt co-o rdi-
nated systems Mercedes-Benz has set a mile -
stone on the path towards autonomous driv ing.
Mercedes-Benz In te lligen t Drive embraces all
elements of active and passive safety in one well
thought out system – for the safety of the veh i-
cle occupants and that of other road users.
Further information on driv ing safety systems
( Y
page 64).
Cruise control
General notes Cruise control maintains a constant road speed
for you. It brakes automatically in order to avoid
excee din g the set spee d. On long and steep
downhill gradients, especially if the veh icle is
laden, you must shift to a lower gear in time. By
doin g so, you will make use of the braking effect
of the engine. This relieves the load on the brake
system and prevents the brakes from overheat-
ing and wearing too quic kly.
Use cruise control on ly if road and traff ic con-
dit ions make it appropriate to maintain a steady speed for a prolonged period. You can store any
road speed above 20 mph (30 km/h).
Important safety notes If you fail to adapt your driving style, cruise con-
trol can neither reduce the risk of an accident
nor override the laws of physics. Cruise control
cannot take into account the road, traff ic and
weather conditions. Cruise control is only an
aid. You are responsible for the distance to the
vehicle in front, for vehicle spee d, for braking in
good time and for staying in your lane.
Do not use cruise control: R
in road and traffic conditions whic h do not
allow you to maintain a constant spee d, e.g. in
heavy traffic or on winding roads R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid R
when there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is a change of drivers, advise the new
driver of the speed store d.
Cruise control lever
C
To activate or increase speed D
To activate or reduce speed

Other vehicles changing lanes
DISTRONIC PLUS has not detected the vehicle
cutting in yet. The distance to this vehicle will be
too short.
Narrow vehicles
DISTRONIC PLUS has not yet detected the vehi-
cle in front on the edge of the road, because of
its narrow width. The distance to the vehicle in
front will be too short.
Obstructions and stationary vehicles
DISTRONIC PLUS does not brake for obstacles
or stationary vehicles. If, for example, the detec-
ted vehicle turns a corner and reveals an obsta- cle or stationary vehicle, DISTRONIC PLUS will
not brake for these.
Crossing vehicles
DISTRONIC PLUS may mistakenly detect vehi-
cles that are crossing your lane. Activating
DISTRONIC PLUS at traffic lights with crossing
traffic, for example, could cause your vehicle to
pull away unintentionally.
DISTRONIC PLUS with Steering Assist
and Stop&Go Pilot
General notes
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot aids you in keeping the vehicle in
the center of the driving lane by means of mod-
erate steering interventions in the speed range
from 0 - 125 mph (0 - 200 km/ h) .
It monitors the area in front of your vehicle by
means of multifunction camera C , at the top of
the windshield.
At speeds of 0 - 37 mph (0 - 60 km/h), Stop&Go
Pilot focuses on the vehicle in front, taking into
account lane markings, e.g. when following vehi-
cles in a traffic jam.
At speeds of more than 37 mph (60 km/h)
Steering Assist focuses on detected lane mark-162
Driving systems
Driving and parking

ings (left and right), and only on the vehicle in
front if lane markings are missing.
If these conditions are not present, Steering
Assist and Stop&Go Pilot cannot provide assis-
tance.
DISTRONIC PLUS must be active in order for the
function to be available.
Important safety notes If you fail to adapt your driving style, DISTRONIC
PLUS with Steering Assist and Stop&Go Pilot
can neither reduce the risk of an accident nor
override the laws of physics. It cannot take
account of road, weather and traffic conditions.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot is only an aid. You are responsible
for the distance to the vehicle in front, for vehi-
cle speed, for braking in good time and for stay-
ing in your lane.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot does not detect road and traffic
conditions. If you are following a vehicle which is
driving towards the edge of the road, your vehi-
cle could come into contact with the curb or
other road boundaries. Be particularly aware of
other road users, e.g. cyclists, that are directly
next to your vehicle.
Obstacles such as building site huts on the lane
or projecting out into the lane are not detected.
An inappropriate steering intervention, e.g. after
intentionally driving over a lane marking, can be
corrected at any time if you steer slightly in the
opposite direction.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot cannot continuously keep your
vehicle in lane. In some cases, the steering
intervention is not sufficient to bring the vehicle
back to the lane. In such cases, you must steer
the vehic le yourself to ensure that it does not
leave the lane.
The support provided by the system can be
impaired 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 reflection from other vehicles (e.g. if
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
no, or several, unclear lane markings are pres-
ent for one lane, e.g. in a construction area 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
The system is switched to passive and no longer
assists you by performing steering interventions
if: R
you actively change lanes R
you switch on the turn signal R
take your hands off the steering wheel or do
not steer for a prolonged period of time
i After you have finished changing lanes,
Steering Assist and Stop&Go Pilot are auto-
matically active again.
DISTRONIC PLUS Steering Assist does not pro-
vide assistance: R
on very sharp corners R
when a loss of tire pressure or a defective tire
has been detected and displayed
Pay attention also to the important safety notes
for DISTRONIC PLUS ( Y
page 156).
The steering interventions are c arried out with a
limited steering moment. The system requires
the driver to keep his hands on the steering
wheel and to steer himself.
If you do not steer yourself or if you take your
hands off the steering wheel for a prolonged
period of time, the system will first alert you with
a visual warning. A steering wheel symbol
appears in the multifunction display. If you have
still not started to steer and have not taken hold
of the steering wheel after five seconds at the
latest, a warning tone also sounds to remind you
to take control of the vehicle. Steering Assist
and Stop&Go Pilot are switched to passive.
DISTRONIC PLUS remains active.
Activating Steering Assist and Stop&Go
Pilot X
Activate the DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot function using the
on-board computer ( Y
page 204).
The DTR+: Steering Assistant On mes-
sage appears in the multifunction display.
Steering Assist and Stop&Go Pilot are active.Driving systems 163
Driving and parking Z

Problems with PARKTRONIC Problem
Possible causes/consequences and P Solutions
Only the red segments in
the PARKTRONIC warn-
ing displays are lit. You
also hear a warning tone
for approximately two
seconds.
PARKTRONIC is then
deactivated and the indi-
cator lamp on the
PARKTRONIC button
lights up. PARKTRONIC has malfunctioned and has switched off. X
If problems persist, have PARKTRONIC checked at a qualified spe-
cialist workshop.
Only the red segments in
the PARKTRONIC warn-
ing displays are lit.
PARKTRONIC is then
deactivated. The PARKTRONIC sensors are dirty or there is interference. X
Clean the PARKTRONIC sensors ( Y
page 282).X
Switch the ignition back on.
The problem may be caused by an external source of radio or ultra-
sound waves. X
See if PARKTRONIC functions in a different location.
Active Parking Assist
General notes Active Parking Assist is an electronic parking aid
with ultrasound. It measures the road on both
sides of the vehicle. A parking symbol indicates
a suitable parking space. Active steering inter-
vention and brake application can assist you
during parking. You may also use PARKTRONIC
( Y
page 170).
Important safety notes Active Parking Assist is merely an aid. It is not a
replacement for your attention to your immedi-
ate surroundings. You are always responsible
for safe maneuvering, parking and exiting a
parking space. Make sure that no persons, ani-
mals or objects are in the maneuvering range.
When PARKTRONIC is switched off, Active Park-
ing Assist is also unavailable.
G WARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could result in a collision with another road user.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active Park-
ing Assist parking procedure.
! If unavoidable, you should drive over obsta-
cles such as curbs slowly and not at a sharp
angle. Otherwise, you may damage the
wheels or tires.
Active Parking Assist may possibly indicate
parking spaces which are not suitable for park-
ing, for example: R
where parking or stopping is prohibited R
in front of driveways or entrances and exits R
on unsuitable surfaces
Parking tips: R
On narrow roads, drive as close to the parking
space as possible. R
Parking spaces that are littered or overgrown
might be identified or measured incorrectly. R
Parking spaces that are partially occupied by
trailer drawbars might not be identified as
such or be measured incorrectly.Driving systems 173
Driving and parking Z

Important safety notes ATTENTION ASSIST is only an aid. It might no t
always recognize fatigue or increasing inatten -
tiveness in time or fail to recognize them at all.
The system is no t a substitut e for a well-reste d
and attentive driver.
The functionalit y of ATTENTION ASSIST is
restricted and warning s may be delaye d or no t
occur at all: R
if th e lengt h of th e journey is less than approx -
imately 30 minute sR
if th e road condition is poor , e.g. if th e surfac e
is uneven or if there are pothole sR
if there is a stron g side win dR
if you have adopted a sport y driving style wit h
high cornerin g speeds or high rates of accel-
eration R
if you are predominantly driving at a spee d
belo w 37 mph (60 km/ h) or above 124 mph
(200 km/ h)R
if you are driving with the DISTRONIC PLUS
Steering Assist activated R
if the time has been set incorrectly R
in active driving situations, such as when you
change lanes or change your speed
The attention level evaluation is deleted and
restarts when the journey is continued, if: R
you switch off the engine R
you take off your seat belt and open the driv-
er's door, e.g. for a change of drivers or to
take a break
Displaying the attention level
You can have current status information dis-
played in the assistance menu ( Y
page 203) of
the on-board computer. X
Select the Assistance display for ATTENTION
ASSIST using the on-board computer
( Y
page 203). The following information is displayed: R
length of the journey since the last break. R
the attention level determined by ATTENTION
ASSIST, displayed in a bar display in five levels
from high to low. R
if ATTENTION ASSIST is unable to calculate
the attention level and cannot output a warn-
ing, the System Suspended message
appears. The bar display then changes the
display, e.g. if you are driving at a speed below
37 mph (60 km/h) or above 124 mph
(200 km/h).
Activating ATTENTION ASSIST X
Activate ATTENTION ASSIST using the on-
board computer ( Y
page 205).
The system determines the attention level of
the driver depending on the setting selected:
Standard selected: the sensitivity with which
the system determines the attention level is set
to normal.
Sensitive selected: the sensitivity is set higher.
The attention level detected by Attention Assist
is adapted accordingly and the driver is warned
earlier.
When ATTENTION ASSIST is deactivated, the