2018 MERCEDES-BENZ GLC COUPE engine

This helps you to avoid overheating the
brakes and wearing them out excessively.
When you take advantage of engine braking, a
drive wheel may not turn for some time, e.g.
on a slippery road surface. This could cause
damage to the drive train. This type of damage is not covered by the Mercedes-Benz war-
ranty.
Heavy and light loads
GWARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time.
!Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately. Drive
on for a short while. This allows the airflow to
cool the brakes more quickly.
Wet roads
If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt resi-
due may form on the brake discs and brake
pads. This can result in a significantly longer
braking distance.
RIn order to prevent any salt build-up, apply the
brakes occasionally while paying attention to
the traffic conditions.
RCarefully depress the brake pedal and the
beginning and end of a journey.
RMaintain a greater distance to the vehicle
ahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up in
the instrument cluster and
Ryou hear a warning tone while the engine is
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immediately.
Consult a qualified specialist workshop to
arrange this.
!Vehicles with 4MATIC: function or per-
formance tests may only be carried out on a 2-
axle dynamometer. If you wish to operate the
vehicle on such a dynamometer, please con-
sult a qualified specialist workshop in
advance. You could otherwise damage the
drive train or the brake system.
!Vehicles with 4MATIC: the ESP®system
operates automatically. If the electric parking
brake is tested on a brake dynamometer, the
engine and ignition must be switched off: turn
the SmartKey in the ignition lock to position
u or1 or press the Start/Stop button
repeatedly in accordance with the given
SmartKey positions.
Braking triggered automatically by ESP
®may
cause severe damage to the brake system.
All checks and maintenance work on the brake
system must be carried out at a qualified spe-
cialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the functional-
ity of your brakes at regular intervals.
Information on BAS (Brake Assist System)
(
Ypage 66) and Active Brake Assist with cross-
traffic function (Ypage 72).
Driving tips157
Driving and parking
Z

For safety reasons, Mercedes-Benz recom-
mends only installing the following brake disks
and brake pads/linings:
Rbrake disks that have been approved by
Mercedes-Benz
Rbrake pads/linings that have been approved
by Mercedes-Benz or that are of an equivalent
standard of quality
Other brake disks or brake pads/linings can
compromise the safety of your vehicle.
Always replace all brake disks and brake pads/
linings on an axle at the same time. Always
install new brake pads/linings when replacing
brake disks.
The vehicle is equipped with lightweight brake
disks to which the wheel assembly with rim and
threaded connection is matched.
The use of brake disks other than those
approved by Mercedes-Benz can change the
track width and is subject to approval, if appli-
cable.
Shock-type loads when handling the brake
discs, such as when changing wheels, can lead
to a reduction in comfort when driving with light-
weight brake discs. Avoid shock-type loads on
the lightweight brake disks, particularly on the
brake plate.
Mercedes-Benz recommends that you only use
brake fluid that has been specially approved for
your vehicle by Mercedes-Benz, or which corre-
sponds to an equivalent quality standard. Brake
fluid which has not been approved for
Mercedes-Benz vehicles or which is not of an
equivalent quality could affect your vehicle's
operating safety.
Driving on wet roads
Hydroplaning
If water has accumulated to a certain depth on
the road surface, there is a danger of hydro-
planing occurring, even if:
Ryou drive at low speeds
Rthe tires have adequate tread depth
For this reason, in the event of heavy rain or in
conditions in which hydroplaning may occur,
you must drive in the following manner:
Rlower your speed
Ravoid ruts
Ravoid sudden steering movements
Rbrake carefully
Driving on flooded roads
!Bear in mind that vehicles traveling in front
or in the opposite direction create waves. This
may cause the maximum permissible water
depth to be exceeded.
Failure to observe these notes may result in
damage to the engine, electrical systems and
transmission.
If you have to drive on stretches of road on which
water has collected, please bear in mind that:
Rin the case of standing water, the water level may be no higher than the lower edge of the
vehicle body
Ryou should drive no faster than walking pace
Winter driving
GWARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
GDANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a
window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur-
faces. Avoid sudden acceleration, steering and
158Driving tips
Driving and parking

braking maneuvers. Do not use cruise control or
Distance Pilot DISTRONIC.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
XShift the transmission to positioni.
The outside temperature indicator is not
designed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in
wooded areas or on bridges. The vehicle could
skid if you fail to adapt your driving style. Always
adapt your driving style and drive at a speed to
suit the prevailing weather conditions.
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
For more information on driving with snow
chains, see (
Ypage 335).
For more information on driving with summer
tires, see (
Ypage 335).
Observe the notes in the "Winter operation" sec- tion (
Ypage 335).
Driving systems
Mercedes-Benz Intelligent Drive
Mercedes-Benz Intelligent Drive stands for inno-
vative driver assistance and safety systems
which enhance comfort and support the driver in
critical situations. With these intelligent coordi-
nated systems Mercedes-Benz has set a mile-
stone on the path towards autonomous driving.
Mercedes-Benz Intelligent Drive embraces all
elements of active and passive safety in one well
thought out system – for the safety of the vehi-
cle occupants and that of other road users.
Further information on driving safety systems
(
Ypage 65).
Cruise control
General notes
Cruise control maintains a constant road speed
for you. It brakes automatically in order to avoid
exceeding the set speed. Change into a lower gear in good time on long and steep downhill
gradients. This is especially important if the
vehicle is laden or towing a trailer. By doing so,
you will make use of the braking effect of the
engine. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly.
Use cruise control only if road and traffic con-
ditions 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
Cruis econtrol can neither reduce th eris kof an
acciden tif you fail to adapt your driving style no r
override th elaws of physics .Cruis econtrol can -
no ttak eint oaccoun tth eroad ,traffic and
weather conditions. Cruis econtrol is only an
aid. You are responsible for maintainin g asafe
distanc eto th evehicl ein front, for vehicl e
speed, for braking in goo dtime and for staying in
lane.
Do no tuse cruise control :
Rin road and traffic condition swhic hdo no t
allow you to maintai n aconstan tspeed, e.g. in
heav ytraffic or on windin groad s
Ron slippery road surfaces. Braking or accel-
erating could caus eth edriv ewheels to lose
traction and th evehicl ecould then skid
Rwhen there is poor visibility, e.g. due to fog ,
heav yrain or snow
If there is achang eof drivers ,advise th ene w
driver of th espee dstored.
iThe spee dindicated in th espeedometer
may differ slightly from th espee dstored.
Cruise control lever
:Activates or increases spee d
;Activates or reducesspee d
Driving systems159
Driving and parking
Z

=Deactivates cruise control
?Activates at the current speed/last stored
speed
When you activate cruise control, the stored
speed is shown in the multifunction display for
five seconds. The ésymbol appears on the
multifunction display.
Speedometer with segments: when cruise
control is activated, the segments from the
stored speed to the end of the scale light up.
Storing and maintaining the current
speed
You can store the current speed if you are driv-
ing faster than 20 mph (30 km/h).
XAccelerate the vehicle to the desired speed.
XBriefly press the cruise control lever up :or
down ;.
XRemove your foot from the accelerator pedal.
Cruise control is activated. The vehicle auto-
matically maintains the stored speed.
iCruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient
evens out. Cruise control maintains the
stored speed on downhill gradients by auto-
matically applying the brakes.
Storing the current speed or calling up
the last stored speed
GWARNING
If you call up the stored speed and it is lower
than the current speed, the vehicle deceler-
ates. If you do not know the stored speed, the vehicle could decelerate unexpectedly. There
is a risk of an accident.
Pay attention to the road and traffic condi-
tions before calling up the stored speed. If you
do not know the stored speed, store the
desired speed again.
XBriefly pull the cruise control lever towards
you ?.
XRemove your foot from the accelerator pedal.
The first time cruise control is activated, it
stores the current speed or regulates the
speed of the vehicle to the previously stored
speed.
Setting a speed
Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set.
XPress the cruise control lever up :for a
higher speed or down ;for a lower speed.
XTo adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly press
the cruise control lever up :or down ;to
the pressure point.
Every time the cruise control lever is pressed
up : or down ;the last speed stored is
increased or reduced.
XTo adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly press
the cruise control lever up :or down ;
beyond the pressure point.
Every time the cruise control lever is pressed
up : or down ;the last speed stored is
increased or reduced.
iCruise control is not deactivated if you
depress the accelerator pedal. If you acceler-
ate to overtake, cruise control adjusts the
vehicle's speed to the last speed stored after
you have finished overtaking.
Deactivating cruise control
There are several ways to deactivate cruise con-
trol:
XBriefly press the cruise control lever forward
=.
or
XBrake.
Cruise control is automatically deactivated if:
Ryou engage the electric parking brake
Ryou are driving at less than 20 mph (30 km/h)
RESP®intervenes or you deactivate ESP®
Ryou shift the transmission to position i
while driving
If cruise control is deactivated, a warning tone
sounds. You will see the Cruise Control Off
message in the multifunction display for approx-
imately five seconds. The message on the mul-
tifunction display disappears and the segments
on the speedometer go out.
iWhen you switch off the engine, the last
speed stored is cleared.
160Driving system s
Driving an d parking

Distance PilotDISTRONI C
General notes
Distanc ePilo tDISTRONIC regulates th espeed
and automatically helps you maintain th edis -
tanc eto th evehicle detecte din front. Vehicles
are detecte dwit hth eaid of th eradar sensor
system. Distanc ePilo tDISTRONIC brake sauto-
matically so that th eset speed is no texceeded.
Change into alowe rgear in goo dtime on lon g
and steep downhill gradients. Thi sis especially
important if th evehicle is laden. By doin gso, you
will mak euse of th ebraking effect of th eengine.
Thi srelieves th eload on th ebrake syste mand
prevents th ebrake sfrom overheatin gand wear -
in g to oquickly.
If Distanc ePilo tDISTRONIC detects that there is
a ris kof acollision ,you will be warned visually
and acoustically. Without your intervention ,Dis-
tanc ePilo tDISTRONIC canno tpreven t acolli-
sion. An intermittent warnin gtone will then
soun dand th edistanc ewarnin glamp will ligh t
up in th einstrumen tcluster. Brak eimmediately
in order to increase th edistanc eto th evehicle in
fron tor take evasiv eaction provided it is saf eto
do so.
Distanc ePilo tDISTRONIC operates in th erange
between 0mph (
0 km/h) and 12
0mph
(20 0km/h).
Do no tuse Distanc ePilo tDISTRONIC whil edriv-
in g on roads wit hsteep gradients.
Sinc eDistanc ePilo tDISTRONIC transmit sradar
waves, it can resemble th eradar detectors of
th eresponsible authorities .You can refer to th e
relevant chapter in th eOperator's Manual if
question sare asked about this.
iUS Aonly: Thi sdevic ehas bee napproved by
th eFCC as a"Vehicular Radar System". The
radar sensor is intended fo ruse in an auto-
motive radar syste monly. Removal, tamper-
ing, or altering of th edevic ewill void any war-
ranties, and is no tpermitte dby th eFCC. Do
no ttampe rwith, alter, or use in any non-
approved way.
An yunauthorized modification to this devic e
could void th euser's authorit yto operat eth e
equipment.
iCanada only: Thi sdevic ecomplies wit h
RSS-210 of Industry Canada. Operation is
subjec tto th efollowin gtw oconditions:
1. Thi sdevic emay no tcause interference,
and 2. Thi
sdevic emus taccept any interferenc e
received, includin ginterferenc ethat may
cause undesired operation of th edevice.
Removal, tampering, or altering of th edev ic
e
w

ill void any warranties ,and is no tpermitted.
Do no ttampe rwith, alter, or use in any non-
approved way.
An yunauthorized modification to this devic e
could void th euser's authorit yto operat eth e
equipment.
Important safet ynotes
GWARNING
Distanc ePilo tDISTRONIC doe sno treact to :
Rpeople or animals
Rstationary objects on th eroad, e.g. stopped
or parke dvehicles
Roncomin gvehicles and crossin gtraffic
As aresult ,Distanc ePilo tDISTRONIC may
neither giv ewarnings no rinterven ein suc h
situations. There is aris kof an accident.
Always pay careful attention to th etraffic sit -
uation and be ready to brake .
GWARNING
Distanc ePilo tDISTRONIC canno talways
clearly identify other road user sand complex
traffic situations.
In suc hcases, Distanc ePilo tDISTRONIC may:
Rgiv ean unnecessary warnin gand then
brake th evehicle
Rneither giv e awarnin gno rinterven e
Raccelerat eor brake unexpectedly
There is aris kof an accident.
Continue to drive carefully and be ready to
brake ,especially if Distanc ePilo tDISTRONIC
warn syou.
GWARNING
Distanc ePilo tDISTRONIC brake syour vehicle
wit hup to 50 %of th emaximum possible
deceleration .If this deceleration is no tsuffi-
cient, Distanc ePilo tDISTRONIC alerts you
wit h a visual and acoustic warning. There is a
ris kof an accident.
Driving systems16 1
Driving an d parking
Z

Apply the brakes yourself in these situations
and try to take evasive action.
!When Distance Pilot DISTRONIC or the
HOLD function are activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
these systems in the following or similar sit-
uations:
Rwhen towing the vehicle
Rin the car wash
Distance Pilot DISTRONIC can neither reduce
the risk of an accident if you fail to adapt your
driving style nor override the laws of physics.
Distance Pilot DISTRONIC cannot take into
account road, weather or traffic conditions. Dis-
tance Pilot DISTRONIC is only an aid. You are
responsible for maintaining a safe distance to
the vehicle in front, for vehicle speed, for brak-
ing in good time and for staying in lane.
Do not use Distance Pilot DISTRONIC:
Rin road and traffic conditions which do not
allow you to maintain a constant speed, e.g. in
heavy traffic or on winding roads
Ron slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid
Rin poor visibility, e.g. due to fog, heavy rain or
snow
Distance Pilot DISTRONIC may not detect nar-
row vehicles driving in front, e.g . mo
torcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can be
impaired if:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is snow or heavy rain
Rthere is interference by other radar sources
Rthere are strong radar reflections, for exam-
ple in parking garages
If Distance Pilot DISTRONIC no longer detects a
vehicle in front, it may unexpectedly accelerate
to the speed stored. This speed may:
Rbe too high if you are driving in a turning lane
or an exit lane
Rbe so high in the right lane that you pass vehi-
cles driving on the left (in countries where
they drive on the right)
Rbe so high in the left lane that you pass vehi-
cles driving on the right (in countries where
they drive on the left)
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
:Activates or increases speed
;Activates or reduces speed
=Deactivates Distance Pilot DISTRONIC
?Activates at the current speed/last stored
speed
ASets a specified minimum distance
When you activate Distance Pilot DISTRONIC,
the stored speed will appear on the multifunc-
tion display for five seconds.
Speedometer with segments: when Distance
Pilot DISTRONIC is activated, the segments of
the stored speed light up to the end of the scale
or to a permanently set speed limit.
Activating Distance Pilot DISTRONIC
Activation conditions
To activate Distance Pilot DISTRONIC, the fol-
lowing conditions must be fulfilled:
Rthe engine must be started. It may take up to
two minutes of driving before Distance Pilot
DISTRONIC is ready for use.
Rthe electric parking brake must be released.
RESP®must be activated, but not intervening
at present.
162Driving systems
Driving an d parking

changing lanes takes too long or if the distance
between your vehicle and the vehicle in front
becomes too small.
When you change lanes, Distance Pilot
DISTRONIC monitors the left lane (on left-hand-
drive vehicles) or the right lane (on right-hand-
drive vehicles).
Stopping
GWARNING
If you leave the vehicle when it is only being
braked by Distance Pilot DISTRONIC, it could
roll away if:
Rthere is a malfunction in the system or in
the voltage supply.
RDistance Pilot DISTRONIC is switched off
using the cruise control lever, e.g. by a vehi-
cle occupant or from outside the vehicle
Rthe electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
Rthe battery is disconnected
Rthe vehicle is accelerated, e.g. by a vehicle
occupant.
There is a risk of an accident.
Before leaving the vehicle, always deactivate
Distance Pilot DISTRONIC and secure the
vehicle against rolling away.
Further information on deactivating Distance
Pilot DISTRONIC (
Ypage 166).
If Distance Pilot DISTRONIC detects that the
vehicle in front is stopping, it brakes your vehicle
to a stop.
Once your vehicle is stationary, it remains sta-
tionary and you do not need to depress the
brake.
After a time, the electric parking brake secures
the vehicle and relieves the service brake.
Depending on the specified minimum distance,
your vehicle will come to a standstill at a suffi-
cient distance behind the vehicle in front. The
specified minimum distance is set using the
control on the cruise control lever. When Distance Pilot DISTRONIC is activated,
the transmission shifts automatically to position
j
if:
Rthe driver's seat belt is not fastened and the
driver's door is open.
Rthe engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function.
The electric parking brake secures the vehicle
automatically if Distance Pilot DISTRONIC is
activated when the vehicle is stationary and:
Ra system malfunction occurs.
Rthe power supply is insufficient.
If a malfunction occurs, the transmission may
also be shifted to position jautomatically.
Setting a speed
XPush cruise control lever up :for a higher
speed or down ;for a lower speed.
XTo adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly push
the cruise control lever up :or down ;to
the pressure point.
Every time the cruise control lever is pressed
up : or down ;the last speed stored is
increased or reduced.
XTo adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly push
the cruise control lever up :or down ;
beyond the pressure point.
Every time the cruise control lever is pressed
up : or down ;, the last speed stored is
increased or reduced.
iIf you accelerate to overtake, Distance Pilot
DISTRONIC adjusts the vehicle's speed to the
last speed stored after you have finished over-
taking.
Setting a specified minimum distance
You can set the specified minimum distance for
Distance Pilot DISTRONIC by varying the time
span between one and two seconds. With this
function you can set the minimum distance that
Distance Pilot DISTRONIC maintains to the vehi-
cle in front, depending on vehicle speed. You
can see this distance in the multifunction dis-
play (
Ypage 165).
Make sure that you maintain the minimum dis-
tance to the vehicle in front as required by law.
164Driving systems
Driving and parking

Deactivating Distance PilotDISTRONI C
There are severa lways to deactivat eDistanc e
Pilo tDISTRONIC:
XBriefly push cruise contro llever forwar d:.
or
XBrake, unless th evehicle is stationary
Whe nyou deactivat eDistanc ePilo tDISTRONIC,
th eDistance Pilot Off
messag ewill appear
on th emultifunction display fo rapproximately
fiv eseconds.
The last speed stored remain sstored until you
switch of fth eengine.
Distanc ePilo tDISTRONIC is no tdeactivated if
you depress th eaccelerator pedal.
Distanc ePilo tDISTRONIC is automatically deac -
tivated if:
Ryou engage th eelectric parking brake or if th e
vehicle is automatically secure dwit hth eelec -
tric parking brake
RES P®intervenes or you deactivat eES P®
Ryou shift th etransmissio nto position j,k
or i
Ryou pull th ecruise contro llever toward syou
in order to pull away and th efront-passenger
doo ror on eof th erea rdoors is ope n
Rthevehicle slip s
Ryou activateParking Pilo t
If ,in these cases, Distanc ePilo tDISTRONIC is
deactivated, awarnin gtone sounds. The Dis‐
tancePilotOffmessag ewill then be shown
on th emultifunction display fo rapproximately
fiv eseconds.
Tips for drivin gwit hDistance Pilo t
DISTRONI C
Pay particular attention in th efollowin gtraffic
situations:
RCornering, enterin gand exitin g abend: th e
ability of Distanc ePilo tDISTRONIC to detec t
vehicles durin gcornering is limited. Your vehi-
cl e may brake unexpectedly or late.
RDriving on adifferen tline: Distanc ePilo t
DISTRONIC may no tdetec tvehicles whic hare
no tdrivin gin th emiddle of their lane. The dis -
tanc eto th evehicle in fron twill be to oshort .
ROther vehicles changin glanes: Distanc ePilo t
DISTRONIC has no tdetecte dth evehicle cut -
ting in yet .The distanc eto this vehicle will be
to oshort .
RNarro wvehicles :Distanc ePilo tDISTRONIC
has no tyet detecte dth evehicle in fron ton
th eedg eof th eroad because of it snarro w
width. The distanc eto th evehicle in fron twill
be to oshort .
RObstacles and stationary vehicles :Distanc e
Pilo tDISTRONIC doe sno tbrake fo robstacles
or stationary vehicles .If ,fo rexample, th e
detecte dvehicle turn s acorner and an obsta -
cl e or stationary vehicle is then revealed, Dis-
tanc ePilo tDISTRONIC will no tbrake fo
r
the

m.
RCrossing traffic :Distanc ePilo tDISTRONIC
may mistakenl ydetec tvehicles that are
crossin gyour lane. Activatin gDistanc ePilo t
DISTRONIC at ,fo rexample, atraffic ligh twit h
crossin gtraffic ,could cause your vehicle to
pull away at th ewrong time.
In suc hsituations, brake if necessary. Distanc e
Pilo tDISTRONIC will then be deactivated.
166Driving systems
Driving an d parking