2018 MERCEDES-BENZ C-CLASS COUPE Owners Manual

If a lane-cor
recting brake application occu rs, dis‐
play 1appears in the multifunction displa y.
Sy stem limitations
No lane-cor recting brake application occu rsin
th efo llowing situations:
R You clear lyand actively steer, brake or accel‐
erate.
R You ha veswitched on the turn signal indica‐
to r (situation-dependent).
R A driving saf ety sy stem inter venes, su chas
ESP ®
,Ac tive Brake Assi stor Active Blind
Spot Assi st. R
You ha veadop ted a sporty driving style with
high cornering speeds or high rates of accel‐
eration.
R When ESP ®
is deactivated.
R When driving with a trailer, the electrical con‐
nection tothe trailer has been cor rectly
es tablished.
R If a loss of tyre pressure or a defective tyre
has been de tected and displ ayed.
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, if there are
highly variable shade conditions or in rain,
sno w,fog or heavy spr ay.
R Ifth ere is glare, e.g. from oncoming traf fic,
th e sun or reflections.
R Ifth e windscreen in the area of the multi‐
function camera is dirty, or if the camera is
mis ted up, damaged or co vered.
R Ifth ere are no lane markings, or se veral
unclear lane markings are present for one
lane, e.g. around roadwor ks. R
Ifth e lane markings are worn, dark or cov‐
ered.
R Ifth e dis tance totheve hicle in front is too
short and thus the lane markings cann otbe
de tected.
R Ifth e lane markings change quickl y,e.g.
lanes branch off, cross one ano ther or
mer ge.
R Ifth e car riag ewa y is very nar row and wind‐
ing.
Ve hicles with Driving Assistance pac kage or
Driving Assistance Plus pa ckage: Active Lane
Ke eping Assist uses radar sensors tomonitor
se veral areas around theve hicle. If thera dar
sensors in there ar bumper are dirty or co vered
with sn ow,th e sy stem may be impaired or may
not function. If an obs tacle in the lane in which
yo u are driving has been de tected, no lane-cor‐
re cting brake application occu rs.246
Driving and pa rking

Ac
tivating/deactivating Active Lane Keeping
Assist (vehicles with Parking Assist
PA RKTRONIC) 000A
WARNING Risk of accident despi te
Ac tive Lane Keeping Assist warning
A lane-cor recting brake application cannot
al wa ys bring theve hicle back into the origi‐
nal lane. 0007
Alw aysst eer, brake or accelera teyour‐
self, especially if Active Lane Keeping
Assist warnsyo u or makes a lane-cor‐
re cting brake application. 000A
WARNING Risk of accident despi teinter‐
ve ntion of Active Lane Keeping Assist
Ac tive Lane Keeping Assist does not de tect
traf fic conditions or road users. In very rare
cases, the sy stem may make an inappropri‐
ate brake application, e.g. af ter intentional ly
driving over a solid lane marking.
The brake application can be inter rupte d at
any time if yousteer slightly in the opposite
direction. 0007
Alw ays make sure that there is suf fi‐
cient di stance tothe side forot her traf‐
fi c or obs tacles. 000A
WARNING Risk of accident despi teLane
Ke eping Assist
Lane Keeping Assist cann otalw ays clearly
de tect lane markings.
In su chcases, Lane Keeping Assist can:
R give an unnecessary warning
R not give a warning 0007
Alw ays pay particular attention tothe
traf fic situation and keep within the
lane, especially if Active Lane Keeping
Assist alerts you. Be sure
toobser vethe sy stem limitations of
Ac tive Lane Keeping Assist. 0007
Press button 2.
If indicator lamp 1lights up, Active Lane
Ke eping Assist is activated, the lane mark‐
ings are shown as light in the assis tance
graphic. When Active Lane Keeping Assist is
active, the lane markings are shown in green
in the assis tance graphic. Driving and pa
rking 247

Setting
the sensitivity of Active Lane Keep‐
ing Assist
Multimedia sy stem:
0018 Vehicle 0019
k Assistance
0019 Act. Lane Keep. Assist 0007
Select a setting.
Ac tivating/deactivating the warning 0007
Swit chLane depart. warning on0073 or off 0053.
Yo u do not recei veany warning when leaving
a lane if the lane keeping warning sy stem is
deactivated. Tr
ailer hitch Tr
ailer operation no tesMercedes‑AMG
vehicles: always obser vethe
no tes in the Supplement. Otherwise, you may
fa ilto recognise dangers.
Obser vethefo llowing no tes on theto ngue
we ight:
R do not use a tongue weight that exceeds or
fa lls below the permissible tongue weight R
use a tongue weight as close as possible to
th e maximum tongue weight
Do not exceed thefo llowing values:
R permissible towing capacity
R permissible rear axle load of theto wing vehi‐
cle
R permissible gross mass of theto wing vehicle
R permissible gross mass of the trailer
R maximum permissible speed of the trailer
Ensure thefo llowing before starting a journey:
R the tyre pressure on there ar axle of theto w‐
ing vehicle is set for a maximum load
R the lighting of the connected trailer is opera‐
tional
R vehicles without LED headlamps or MUL‐
TIBEAM LED headlamps: the headlamps
ha ve been set cor rectly
In theeve nt of increased rear axle load, the car/
trailer combination may not exceed a maximum
speed of 100 km/h forre asons concerning the
operating permit. This also applies in countri esin which
the permissible maximum speed for
car/trailer combinations is ab ove100 km/h. Fo
lding the ball neck out/in 000A
WARNING Risk of accident due tothe
ball neck not being engaged
If th e ball neck is not engaged, the trailer
may come loose. 0007
Alw ays engage the ball neck as descri‐
bed. 000A
WARNING Risk of inju ryfrom ball neck
swinging outwards
The ball neck may swing outwards when
unlo cking or when it has not been properly
engaged.
There is a risk of injury within the ball neck's
ra nge of mo vement! 0007
Unlock the ball neck only when its
ra nge of mo vement is unobstructed. 248
Driving and pa rking

0007
Alw ays be sure the ball neck is engaged
when folding in wards. Re
quirements:
R The transmission has been shif tedto posi‐
tion 005Dor005C.
R The range of mo vement is clear.
R Only when folding in: The trailer cables or
adap ter plugs are remo ved. Fo
lding the ball neck out 0007
Pull release switch 2until the ball neck
unloc ks.
The ball neck will fold out from under the
re ar bumper.
Indicator lamp 1will flash. 0007
Pull the ball neck in the direction of the
ar row until it en gage s audibly in a vertical
position.
Indicator lamp 1onthe ball neck release
switch will go out.
If th e ball neck is not securely loc ked in
place, theCheck trailer hitch lockdisplay
message will appear on the multifunction dis‐
pla y. Driving and pa
rking 249

0007
Remo vethe co ver from the ball head and
st ore it in a safe place.
Make sure that the ball on the ball neck is clean.
Check that it is either greased or dr y (grease-
free), depending on the instructions forthe
traile r.
Fo lding the ball neck in 0007
Pull release switch 2until the ball neck
unloc ks.
The ball neck will fold up under there ar
bumper.
Indicator lamp 1will flash. 0007
Push the ball neck in the direction of the
ar row until it en gage s audibly behind the
bumper.
Indicator lamp 1will go out and the mes‐
sage on the multifunction display will disap‐
pear.
Obser vethe information on the displa yson the
instrument clus ter:
R Warning and indicator lamps
(0013 page 529)
R Display messages (0013 page474) Cou
pling up / uncoupling a trailer 000A
WARNING Risk of inju ryfrom theve hicle
le ve l being changed
Ve hicles with le vel control sy stem: the
ve hicle le vel may be changed unin tentional ly,
e.g. by ot her persons. You may become trap‐
ped if you couple up or uncouple a trailer
while theve hicle le vel is changing. In addi‐
tion, other people could become trapped if
th eir limbs are between theve hicle body and
th e tyres or underneath theve hicle.
When coupling up or uncoupling a trailer,
make sure that: 0007
The doors or tailgate are not opened or
closed. 0007
You do not initiate the le vel control sys‐
te m and do not operate theDY NA MIC
SELECT switch. 0007
Do not lock or unlock theve hicle. Re
quirements:
R the ball neck must be extended and engaged
in the securely loc ked position Tr
ailers with a 7-pin plug can be connec tedto
th eve hicle with thefo llowing adap ters:
R adap ter plug
R adapte r cable
The trailer will be cor rectly de tected bytheve hi‐
cle only if thefo llowing conditions are me t:
R the trailer is connected cor rectly
R the trailer lighting sy stem is in working order
The functions of thefo llowing sy stems are af fec‐
te dby a cor rectly connected traile r:
R Active Lane Keeping Assist
R ESP ®
trailer stabilisation
R Parking Assist PARKTRONIC
R Active Parking Assist
R Blind Spot Assist or Active Blind Spot Assi st250
Driving and parking

Coupling up a trailer
000E NO
TEDama getotheve hicle battery due
to full discharge Charging
the trailer battery using the po wer
supply of the trailer can damage theve hicle
batter y. 0007
Do not use theve hicle's po wer supply
to charge the trailer batter y. 0007
Remo vethe co ver from the ball head and
st ore it in a safe place (0013 page111). 0007
Position the trailer on a le vel sur face behind
th eve hicle and couple it up totheve hicle. 0007
Open the soc ket cap. 0007
Inse rtthe plug with lug 1in groo ve3 on
th e soc ket. 0007
Turn the ba yonet coupling 2clockwise as
fa r as it will go. 0007
Let the cap engage. 0007
Secure the cable tothe trailer with cable ties
(only if you are using an adap ter cable). 0007
Make sure that the cable is alw ays slack for
ease of mo vement during cornering.
A display messa gemay appear on the multifunc‐
tion display even if the trailer has been connec‐
te d cor rectly:
R LEDs ha vebeen ins talled in the trailer light‐
ing sy stem
R The cur rent has fallen below the trailer light‐
ing sy stem's minimum cur rent (50 mA).
0009 Accessories can be connected tothe perma‐
nent po wer supp lyup to180W, and tothe
po we r supp lythat is swit ched on via the igni‐
tion loc k. Un
coupling a trailer 000A
WARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer wi than engaged
ine rtia-activated brake, your hand may
become trapped between theve hicle and the
trailer dr awbar. 0007
Do not uncouple trailers with an
engaged overrun brake. 000A
WARNING Risk of becoming trapped
when disconnecting the trailer cable
Ve hicles with le vel control sy stem: The
ve hicle lo werswhen the trailer cable is dis‐
connected.
This could result in you or other people
becoming trapped if your or their limbs are
between theve hicle body and the tyres or
underneath theve hicle. 0007
Make sure that nobody is unde rneath
th eve hicle or in the immediate vicinity Driving and parking
251

of
the wheel ar ches when you discon‐
nect the trailer cable. 0007
Secure the trailer against rolling away. 0007
Disconnect the electrical connection
between theve hicle and the trailer. 0007
Uncouple the trailer. 0007
Place the co ver on the ball head. Bicycle
rackfunction 000A
WARNING Risk of an accident when
using the bicycle rack incor rectly
The bicycle rack may become de tach ed from
th eve hicle in thefo llowing cases:
R the permissible load capacity of the
trailer hitch is exceeded.
R the bicycle rack is used incor rectl y.
R the bicycle rack is secured tothe ball
neck beneath the ball head. Obser
vethefo llowing foryo ur ow n sa fety
and that of other road users: 0007
always adhere tothe permissible load
capacity of the trailer hitch. 0007
only use the bicycle rack totranspo rt
bicycles. 0007
always proper lysecure the bicycle rack
by attaching it tothe ball head. 0007
only use bicycle rack s appr ovedby
Mercedes-Benz. 0007
always obser vethe bicycle rack operat‐
ing instructions. 000E
NO
TEDama geto, or cra cks on, the
trailer hitch due tounsuitable bic ycle
ra ck s or bicycle rack s being used incor‐
re ctly 0007
use only bicycle rack s appr ovedby
Mercedes-Benz. Depending on
the bicycle rack 's design, up to
th re e bicycles can be transpor ted on the bicycle
ra ck.
When mounted byattaching toball head 1,the
maximum load capacity is 75kg.
The load capacity is calculated from thewe ight
of the bicycle rack and the bicycle rack load. 252
Driving and parking

The
vehicle's driving characteristics will change
when a bicycle rack isfitted:
R The vehicle will be heavier.
R Acceleration and slope-climbing ability will
be restricted.
R Braking di stances will be lon ger.
This may impair theve hicle's driving characteris‐
tics. Adapt your driving style accordingly. Drive
carefully and maintain a safe dis tance.
When using a bicycle rack , set the tyre pressure
fo r maximum load on there ar axle of theve hicle.
Fu rther information on the tyre pressure can be
fo und in the tyre pressure table
(0013 page 436).
Note s on loading
The lar gerth e dis tance between the load's
cent reof gr avity and the ball head, the greater
th e load on the trailer hitch.
Therefore, obser vethefo llowing no tes:
R mount heavy bicycles as close totheve hicle
as possible R
always distribute the load on the bicycle rack
as evenly as possible across theve hicle's
longitudinal axis
Mercedes-Benz recommends removing all
de tach able parts from bicycles, e.g. bask ets,
ch ild seats or rech arge able bat teries, before
loading them onto the bicycle rack . This will
impr ovethe aerodynamic resis tance and centre
of gr avity of the bicycle rack.
Alw ays secure the bicycles topreve ntthem from
moving around and check that they are secure at
re gular inter vals.
Do not use tarp aulins or other co vers. The driv‐
ing characteristics and rear view may be
impaired. In addition, the aerodynamic resist‐
ance and the load on the trailer hitch will
increase. Distribution of
the load on the bicycle rack
1 Vertical dis tance between centre of gr avity
and ball head
2 Horizon tal dis tance between centre of gr av‐
ity and ball head
3 The centre of gr avity is on theve hicle's
centre axis Driving and parking
253