lane assist MERCEDES-BENZ C-CLASS SALOON 2018 Owners Manual

1
Steering wheel gearshift paddles →
183
2 Combination swit ch →
137
3 DIRECT SELECT le ver →
181
4 Multimedia sy stem display →
297
5 Glovecompa rtment →
11 6
6 Start/ stop button →
167
7 Climate cont rol sy stems →
15 6
8 Control elements forth e multimedia sy stem →
297
9 Hazard warning lights →
13 8
A PASSENGER AIRB AGindicator lamps →
43
B Stow age compartment →
11 6
C Control panel forth e multimedia sy stem →
298
D Switches the control knob forvo lume and
sound on/off →
297
E Swit ches the multimedia sy stem on/off →
297
F Rear wind ow roller sunblind →
87
G ECO start/ stop function →
175 H
Active Parking Assist →
247
I Sets theve hicle le vel →
234
J DYNA MIC SELECT switch →
178
K Control panel forth e multimedia sy stem
(s te ering wheel) →
270
L Adjusts thesteering wheel →
111
M Control panel forth e on-board computer →
270
Operating cruise contro l ortheva riable limiter →
216
Operating Active Dis tance Assi stDISTRONIC →
220
N Diagno stics connection →
26
O Opens the bonn et →
408
P Electric parking brake →
19 8
Q Light switch →
13 5
R Control panel for:
Ac tive Steering Assist →
226
Ac tive Lane Keeping Assist →
261 At
aglance – Cockpit 7

bol
3will also appear on the head-up display
beside the transmission displa y.
When theve hicle nears an event, ECO Assist will
calculate the optimal speed for maximum fuel
economy and recuperati veenergy based on the
dis tance, speed and downhill gradient. The "Foot
off the accelera tor" 3 symbol will appear on
th e multifunction displa y.
If th e driver lifts off the accelera tor pedal in
good time, there maining segments on the dis‐
play will turn green until theev ent shown is
re ached. The driv etra in will be set for maximum
fuel econom y.The vehicle will coast, with the
combustion engine switched off if necessar y,
and recuperate on its own using the electric
mo tor.Re cuperation will charge the batter y.
If th ere is no response tothe "Foot off the accel‐
erator" 3prom pt,th e segments will remain
white.
The event will be shown for a short time af ter it
has been passed.
If th eeve nt in volves a vehicle ahead and when
th e coast-down recommendation is given, all
segments will immediately turn green once there is a
response tothe "Foot off the accelerator"
3 prom pt.
If th e sy stem does not inter vene du ring the
eve nt ahead, no thing will be displa yed. The sys‐
te m is passive.
ECO Assist is active only in drive program ;
(maximum recuperation) and A(reduced
re cuperation).
Ve hicles with a 48 V on-board electrical sys‐
te m (EQ Boo sttech nology): in drive program
A, only theeve nt "Vehicle ahead" is dis‐
pl ay ed.
Sy stem limitations
ECO Assist can function more precisely if the
ro ute is main tained when route guidance is
active. The basic function is also available with‐
out active route guidance. Notall information
and traf fic situations can be fore seen. The qual‐
ity depends on the map data.
ECO Assist is only an aid. The driver is responsi‐
ble forke eping a safe dis tance from theve hicle
in front, forve hicle speed and for braking in
good time. The driver must be ready tobrake at all times ir
respective of whe ther the sy stem
inter venes.
The sy stem may be impaired or may not function
in thefo llowing situations:
R Ifth ere is poor visibility, e.g. due toinsuf fi‐
cient illumination of thero ad, high lyvariable
shade conditions, rain, sno w,fog or heavy
spr ay.
R Ifth ere is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections.
R Ifth ere is dirt on the windscreen in the vicin‐
ity of the multifunction camera or the camera
is mis ted up, damaged or obscured.
R Ifth e traf fic signs are ha rdtodetect, e.g. due
to dirt or snow or insuf ficient lighting, or
because they are obscured.
R Ifth e information on the navigation sy stem's
digital map is incor rect or out of da te.
R Ifth e signs are ambiguous, e.g. traf fic signs
in roadwor ksor in adjacent lanes. Driving and parking
17 7

Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R 360° Camera (0013 page242)
R ABS ( Anti-lock BrakingSystem)
(0013 page 203)
R Active Dis tance Assi stDISTRONIC
(0013 page 218)
R Adaptive brake lights (0013 page214)
R AIRMATIC (0013 page 232)
R Active Brake Assi st (0013 page 208)
R Active Lane Keeping Assist (0013 page 259)
R ATTENTION ASSIST (0013 page 252)
R BAS (B rake Assist System) (0013 page 204)
R Hill Start Assist (0013 page 230)
R DYNA MIC BODY CONTROL (0013 page 232)
R EBD ( Electronic Brakeforc eDistribution)
(0013 page 207) R
ESP ®
(Electronic Stability Program)
(0013 page 204)
R Active Speed Limit Assi st (0013 page 222)
R HOLD function (0013 page 230)
R STEER CONTROL (0013 page 208)
R Active Steering Assist (0013 page 224)
R Speed limiter (0013 page215)
R Active Parking Assist (0013 page246)
R Parking Assist PARKTRONIC
( 0013 page 235)
R Reversing camera (0013 page 239)
R Cruise control (0013 page214)
R Function of Blind Spot Assi stand Active Blind
Spot Assi stwith exitwa rning
(0013 page 256)
R Traf fic Sign Assi st (0013 page 254) Fu
nction of ABS (Anti-lock Braking Sy stem) ABS
regulates the brake pressure in critical driv‐
ing situations:
R During braking, e.g. at full brake application
or insuf ficient tyre traction, the wheels are
pr eve nted from lo cking.
R Vehicle steerability while braking is ensured.
If ABS inter venes when braking, you will feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road
conditions and can ser veas a reminder totake
ex tra care while driving.
Sy stem limitations
R ABS is active from speeds of appr ox.
8 km/h.
R ABS may be impai red or may not function if a
malfunction has occur red and theye l‐
low 0025 ABSwarning lamp lights up contin‐
uously in the instrument clus ter af terthe
engine is star ted. Driving and parking
203

Ac
tivating/deactivating ESP ®
(Electronic Sta‐
bility Prog ram) Multimedia sy
stem:
0018 Vehicle 0019
k Assistance 0019
ESP
Mercedes‑AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers. 0007
Activate 0073or deacti vate 0053 the function.
ESP ®
is deactivated if the00BB ESP®
OFF warn‐
ing lamp lights up continuously in the instrument
clus ter.
Obser vethe information on warning lamps and
display messages which may be shown in the
instrument clus ter. Fu
nction of ESP ®
Crosswind Assist ESP
®
Crosswind Assist de tects sudden gu sts of
side wind and helps the driver tokeep theve hi‐
cle in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds between 80 km/h and 200 km/h when driving
stra ight ahead or cornering
slight ly.
R The vehicle is stabilised bymeans of individ‐
ual brake application on one side. Fu
nction of ESP ®
trailer stabilisation 000A
WARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot pr event lur ching of
th eve hicle/trailer combination. Trailers with
a high centre of grav ity may tip over before
ESP ®
de tects this. 0007
Alw ays adapt your driving style to suit
th e cur rent road and weather condi‐
tions. When driving with a trailer, ESP
®
can stabilise
yo ur vehicle if the trailer begins toswer vefrom
side toside:
R ESP ®
trailer stabilisation is active abo ve
speeds of 65 km/h. R
Slight swerving is reduced bymeans of a tar‐
ge ted, individual brake application on one
side.
R Intheeve nt of se vere swerving, the engine
output is also reduced and all wheels are
braked.
ESP ®
trailer stabilisation may be impaired or
may not function if:
R The trailer is not connec ted cor rectly or is
not de tected prope rly by theve hicle. Fu
nction of EBD (Electronic Brake forc e Dis‐
tribution) EBD is
characterised bythefo llowing:
R Monitoring and regulating the brake pressure
on there ar wheels.
R Impr oved driving stability when braking,
especially on bends. Driving and parking
207

halt. The
vehicle accelerates or brakes depend‐
ing on the dis tance totheve hicle in front and
th e set speed. The speed and dis tance tothe
ve hicle in front are set and sa ved on thesteering
wheel on vehicles without the Driving Assis tance
Pa ckage, in thera nge between 20 km/h and
200 km/h and, on vehicles with the Driving
Assis tance Package, in thera nge between
20 km/h and 210 km/h.
Other features of Active Dis tance Assi st
DISTRONIC:
R Adjusts the driving style depending on the
selected drive program (fuel-saving, comfort‐
able or dynamic) (0013 page178)
R Vehicles with Driving Assistance Pack‐
age: reacts tostationary vehicles de tected in
urban speed ranges (e xcept bicycles and
mo torcyc les).
R Initiates acceleration tothestored speed if
th e turn signal indicator is switched on to
ch ange totheov ertak ing lane.
R Vehicles with Driving Assistance Pack‐
age: take s one-sided overtaking restrictions
into account on mo torw ays or on multi-lane ro
ads with separate car riag ewa ys(countr y-
dependent).
Ve hicles with Active Parking Assist and Driv‐
ing Assistance Package: ifth eve hicle has
been braked toast andstill on multi-lane, stru c‐
tural lyseparate car riag ew aysby Active Dis tance
Assi stDISTRONIC, it can au tomatically follow
th eve hicle in front driving off again within 30
seconds. If a critical situation is de tected when
driving off, a visual and acoustic warning is given
indicating that the driver must now take control
of theve hicle. The vehicle is not accelerated any
fur ther.
Ac tive Dis tance Assi stDISTRONIC is only an aid.
The driver is responsible forke eping a safe dis‐
ta nce totheve hicle in front, forve hicle speed
and for braking in good time.
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in great lyvarying
light conditions. R
The windsc reen in the area of the camera is
dirty, mis ted up, damaged or co vered.
R Ifth era dar sensors are dirty or co vered.
R In multi- stor ey car pa rks or on roads with
st eep uphill or downhill gradients.
R Ifth ere are nar rowvehicles in front, such as
bicycles or mo torcyc les.
In addition, on slippery roads, braking or accel‐
erating can cause one or se veral wheels tolose
traction and theve hicle could then skid.
Do not use Active Dis tance Assi stDISTRONIC in
th ese situations. 000A
WARNING Risk of accident from acceler‐
ation or braking byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC may accel‐
erate or brake in thefo llowing cases, for
ex ample:
R Ifth eve hicle pulls away using Active Dis‐
ta nce Assi stDISTRONIC. Driving and pa
rking 219

R
Ifth estored speed is called up and is
considerably faster or slo werth an the
cur rently driven speed.
R IfAc tive Dis tance Assi stDISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. 0007
Alw ays carefully obser vethe traf fic con‐
ditions and be ready tobrake at all
times. 0007
Take into account the tra ffic situation
before calling up thestored speed. 000A
WARNING Risk of accident due toinsuf‐
fi cient decele ration byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC brakes
yo ur vehicle with up to50 % of the maximum
possible deceleration. If this decele ration is
not su fficient, Active Dis tance Assi st
DISTRONIC alerts you with a visual and
acoustic warning. 0007
Inthese cases, adjust your speed and
ke ep a suf ficient di stance. 0007
Brake theve hicle yourself and/or take
ev asive action. 000A
WARNING Risk of accident if de tection
function of Active Dis tance Assi st
DISTRONIC is impaired
Ac tive Dis tance Assi stDISTRONIC does not
re act or has a limited reaction:
R when driving on a dif fere nt lane or when
ch anging lanes
R topedestrians, animals, bicycles or sta‐
tionary vehicles, or unexpected obs tacles
R tocompl extraf fic conditions
R tooncoming vehicles and crossing traf fic
As a result, Active Dis tance Assi st
DISTRONIC may nei ther give warnings nor
inter vene in su chsituations. 0007
Alw ays obser vethe tra ffic conditions
carefully and react accordin gly. Operating
Active Di stance Assist DIST RONIC
Re quirements:
R The vehicle has been star ted.
R The elect ric pa rking brake is released.
R ESP ®
is activated and is not inter vening.
R The transmission is in position 005B.
R All doors and the bonn etare closed.
R Check of thera dar sensor sy stem has been
successfully comple ted.
R Parking Assist PARKTRONIC is not being
used topark theve hicle or toexit from a
parking space.
R The vehicle does not skid. 220
Driving and parking

Also,
the speed is reduced if the turn signal to
ch ange lanes is swit ched on and one of thefo l‐
lowing situations is de tected:
R Turning off at junctions
R Driving on slowing-down lanes
R Driving on lanes adjacent toslowing-down
lanes
The driver is responsible forch oosing theright
speed and observing other road users. This
applies in particular tojunctions, roundabouts
and traf fic lights, as route-based speed adap ta‐
tion does not brake theve hicle toast andstill.
When route guidance is active, thefirs t speed
adjustment is car ried out automaticall y.Ifthe
turn signal indica tor is switched on, the selected
ro ute is confirmed and fur ther speed adjustment
is activated.
Speed adjustment is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched off
before thero ute event.
R Ifth e driver depresses the accelera tor or
brake pedal during the process. Sy
stem limitations
Ro ute-based speed adap tation does not take
ri ght of wayre gulations into account. The driver
is responsible for complying with road traf fic
re gulations and driving at a suitable speed.
In dif ficult conditions (e.g. unclear roads, nar row
lanes, wetro ad sur faces, snow or ice) or when
driving wi tha trailer, the speed adjustment made
by the sy stem may not alw ays be suitable. In
th ese situations the driver must inter vene
acco rding ly. 000A
WARNING Risk of accident in spi teof
ro ute-based speed adjustment
Ro ute-based speed adjustment might mal‐
function or be temp orarily una vailable in the
fo llowing situations:
R If map data is not up todate or available
R Ifyo u do not follow the selected route
guidance
R Ifth e set route is re-planned
R Inroad con stru ction areas R
When towing a trailer
R In bad weather or road conditions
R Ifth e accelera tor pedal is depressed 0007
Adjust the speed tothe traf fic situation. Setting
route-based speed adjustment Re
quirements:
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
0018 Vehicle 0019
k Assistance
0019 Speed adjustment 0007
Activate 0073or deacti vate 0053 the function. Ac
tive Steering Assist Fu
nction of Active Steering Assist
0009 Active Steering Assist is count ry-dependent
and only available forve hicles with the Driv‐
ing Assis tance Package. 224
Driving and parking

Ac
tive Steering Assist is operational at speeds
up to210 km/h and helps youto stay inthe
centre of the lane bymeans of moderate steer‐
ing inter ventions. It uses theve hicle in front and
th e lane markings as a refere nce depending on
th e driven speed.
When the sy stem is actively steering, theè
symbol is shown in green in the multifunction
displa y.
If th e de tection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches topassive mode. The sy stem pr ovides
no support in this case. During the transition
from active topassive status, theè symbol is
shown as enlar ged and flashes yello w. Once the
sy stem is passive, theè symbol is shown as
gr ey inthe multifunction displa y.
Ste ering and touch de tection
The driver is requiredtokeep their hands on the
st eering wheel at all times and be able tointer‐
ve ne at any time tocor rect the course of the
ve hicle and keep it in lane. The driver must
ex pect a change from active topassive mode or
vice versa at any time. If
th e sy stem reaches a sy stem limitation or the
driver has not steered theve hicle for a consider‐
able period of time or has remo vedth eir hands
from thesteering wheel, the sy stem will,
depending on the situation, alert the driver
either with a visual warning or a visual and
acoustic warning. Display 1appears in the mul‐
tifunction displa y.
If th e driver does not steer theve hicle over a
long period, or has not take n hold of thesteering
wheel, a repeated warning tone sounds in addi‐
tion tothe visual warning message (depending
on the count ry). The
warning message does not appear or disap‐
pears if one of thefo llowing conditions are me t:
R The driver steers theve hicle.
R The driver presses a steering wheel button or
operates Touch Control.
Ac tive Steering Assist is only an aid. The driver is
re sponsible forth e dis tance totheve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane. Before changing lanes,
th e driver must make sure that the neighbouring
lane is free (glance over the shoulder).
Sy stem limitations
Ac tive Steering Assist has a limited steering tor‐
qu efo r lateral guidance. In some cases, the
st eering inter vention is not su fficient tokeep the
ve hicle in the lane or todrive past exits.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, direct sunlight, greatlyvarying light
conditions, reflections or stro ng shado wson
th e car riag ew ay.
R Insuf ficient road illumination. Driving and parking
225

R
The windscreen in the area of the camera is
dirty, mis ted up, damaged or co vered.
R Absence of lane markings, or se veral unclear
lane markings, or if the markings change rap‐
idl y.
R The dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected.
R The road is nar row and winding.
R Obs tacles on the lane or projecting out into
th e lane.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R On tight bends, junctions, tollst ations,
ro undabouts and when turning.
R When towing a trailer.
R When actively changing lane without swit ch‐
ing on the turn signal.
R When the tyre pressure is too lo w. 000A
WARNING Risk of accident if Active
St eering Assist unexpectedly stops func‐
tioning
If th e sy stem limitations of Active Steering
Assist are reached there is no guarantee that
th e sy stem will remain active or will keep the
ve hicle in lane. 0007
Alw ayske ep your hands on thesteering
wheel and obser vethe tra ffic carefull y. 0007
Alw aysst eer theve hicle paying atten‐
tion totraf fic conditions. 000A
WARNING Risk of accident if Active
St eering Assist unexpectedly inter venes
A malfunction in the de tection of lane mark‐
ings and objects can occu r.
This could cause unexpected steering inter‐
ve ntion. 0007
Steer according totraf fic conditions. Ac
tivating Active Steering Assist
Re quirements:
R ESP ®
must be activated, but not inter vening.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d. 0007
If indicator lamp 1is off: press button 2.226
Driving and parking

Fu
nction of Active Lane Change Assi st
0009 The following function is countr y-dependent
and only available in conjunction with the
Driving Assi stance Package.
Ac tive Lane Change Assi stsupports the driver
when changing lanes byapplying steering torque
if th e driver operates a turn signal.
Assis tance when changing lanes is pr ovided if all
th efo llowing conditions are me t:
R You are driving on a mo torw ay orroad with
multiple lanes in the direction of tr avel.
R The neighbouring lane is separated bya bro‐
ke n lane ma rking.
R Novehicle is de tected in the adjacent lane.
R The driven speed is between 80 km/h and
18 0 km/h.
R Active Lane Change Assi stis switched on in
th e multimedia sy stem.
R Active Steering Assist is switched on and
active. If no
vehicle is de tected in the adjacent lane and
a lane change is permit ted, the lane change
begins. This is shown tothe driver with a green
ar row 2next tothesteering wheel symbol.
The Lane change to the left message also
appears, forex ample. If Active Lane Change
Assi sthas been activated with the turn signal
indicator but a lane change is not immediately
possible, a gr eyarrow 1appears next tothe
st eering wheel symbol, which remains green.
When the lane change assis tance starts, the turn
signal indicator is automatically activated beside
th e display in the multifunction displa y.
If th e assis tance graphic is shown when chang‐
ing lanes, the lane change display appears with an additional ar
rowpointing towa rdsth e adja‐
cent lane (0013 page 228).
If a lane change is not possible, the ar row fa des
out af ter a few seconds and a new lane change
must be initiated. An immediate lane change is
on ly possible on mo torw ay sections without
speed limits.
If th e sy stem is impaired, Active Lane Change
Assi stmay be cancelled. If it is cancelled, the
Lane change cancelled message appears inthe
multifunction display and a warning tone sounds. 000A
WARNING Risk of accident from chang‐
ing lane toan occupied adjacent lane
Lane Chan geAssi stcannot al ways detect
clearly if the adjacent lane is free.
The lane change might be initiated although
th e adjacent lane is not free. 0007
Before changing lanes, make sure that
th e neighbouring lane is free and there
is no danger to otherroad users. 0007
Monitor the lane change. Driving and parking
227