a collision cannot always be avoided, partic-
ularly when approaching at too high a speed.
There is a risk of an accident.
Always apply the brakes yourself and try to
take evasive action, provided it is safe to do
so.
In the event of a partial application of the
brakes, the vehicle is braked with up to 50% ofthe full braking pressure.
GWARNING
PRE-SAFE
®Brake cannot always clearly iden-
tify objects and complex traffic conditions.
In these cases, PRE-SAFE
®Brake may:
Rgive an unnecessary warning and then
brake the vehicle
Rnot give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
PRE-SAFE
®Brake warns you. Terminate the
intervention in a non-critical driving situation.
GWARNING
PRE-SAFE
®Brake cannot always clearly iden-
tify people, especially if they are moving. In
these cases, PRE-SAFE
®Brake cannot inter-
vene. There is a risk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
PRE-SAFE
®Brake warns you.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a col-
lision, you must apply the brakes yourself.
GWARNING
PRE-SAFE
®Brake does not react:
Rto small people, e.g. children
Rto animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As a result, PRE-SAFE®Brake may neither
give warnings nor intervene in all critical sit-
uations. There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
In the event of snowfall or heavy rain, the rec-ognition can be impaired.
Recognition by the radar sensor system is
also impaired in the event of:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is interference by other radar sources
Rthere are strong radar reflections, for
example in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
relative to the center of your vehicle
Recognition by the camera system is also
impaired in the event of:
Rdirt on the camera or if the camera is cov-
ered
Rthere is glare on the camera system, e.g.
from the sun being low in the sky
Rdarkness
Rif:
-pedestrians move quickly, e.g. into the
path of the vehicle
-the camera system no longer recognizes
a pedestrian as a person due to special
clothing or other objects
-a pedestrian is concealed by other
objects
-the typical outline of a person is not dis-
tinguishable from the background
Following damage to the front end of the vehi-
cle, hav
e the configuration and operation of
the radar sensors checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at low speeds where there is no visible
damage to the front of the vehicle.
Following damage to the windshield, have the
configuration and operation of the camera
76Driving safety systems
Safety
XBefore starting off, adjust the rear-view mir-ror and the exterior mirrors in such a way
that you have a good view of road and traf-
fic conditions (
Ypage 118).
XStore the seat, steering wheel and exterior
mirror settings using the memory function
(
Ypage 121).
Seats
Important safety notes
GWARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The seats can still be adjusted when there is
no SmartKey in the ignition lock.
GWARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(
Ypage 50) and "Children in the Vehicle"
(
Ypage 62).
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
If you adjust the seat height carelessly, you or
other vehicle occupants could be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem.
GWARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
GWARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
!To avoid damage to the seats and the seat
heating, observe the following information:
Rkeep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
Rif the seat covers are damp or wet, do not
switch on the seat heating. The seat
Seats107
Seats, steering wheel and mirrors
Z
Rthe exterior mirrors fold in automatically as
soon as you lock the vehicle from the out-
side.
Rthe exterior mirrors fold out automatically
again as soon as you unlock the vehicle.
iIf the exterior mirrors have been folded in
manually, they do not fold out.
Exterior mirror pushed out of position
This function is only available in vehicles for
Canada.
If an exterior mirror has been pushed out of
position, proceed as follows:
XPress and hold button :until you hear a
click and the mirror engages audibly into
position (
Ypage 118).
The mirror housing is engaged again and
you can adjust the exterior mirrors as usual
(
Ypage 118).
Automatic anti-glare mirrors
GWARNING
Electrolyte may escape if the glass in an auto-
matic anti-glare mirror breaks. The electrolyte
is harmful and causes irritation. It must not
come into contact with your skin, eyes, res-
piratory organs or clothing or be swallowed.
There is a risk of injury.
If you come into contact with the electrolyte,
observe the following:
RRinse off the electrolyte from your skin
immediately with water.
RImmediately rinse the electrolyte out of
your eyes thoroughly with clean water.
RIf the electrolyte is swallowed, immediately
rinse your mouth out thoroughly. Do not
induce vomiting.
RIf electrolyte comes into contact with your
skin or hair or is swallowed, seek medical
attention immediately.
RImmediately change out of clothing which
has come into contact with electrolyte.
RIf an allergic reaction occurs, seek medical
attention immediately.
The rear-view mirror and the exterior mirror
on the driver's side automatically go into anti-
glare mode if the following conditions are met
simultaneously:
Rthe ignition is switched on
Rincident light from headlamps strikes the
sensor in the rear-view mirror.
The mirrors do not go into anti-glare mode if
reverse gear is engaged or if the interior light-
ing is switched on.
Parking position for the exterior mir-
ror on the front-passenger side
Setting and storing the parking position
Using reverse gear
:Memory button M
;Adjustment button
=Button for the front-passenger side exte-
rior mirror
?Button for the driver's side exterior mirror
You can position the front-passenger side
exterior mirror in such a way that you can see
the rear wheel on that side as soon as you
engage reverse gear. You can store this posi-
tion.
Mirrors119
Seats, steering wheel and mirrors
Z
Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops (
Ypage 26).
Overview of climate control systems
General notes
Observe the settings recommended on the
following pages. The windows could other-
wise fog up.
To prevent the windows from fogging up:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only
briefly
Rswitch on the cooling with air dehumidifi-
cation function
Rswitch on the defrost windshield function
briefly, if required
Climate control regulates the temperature
and air humidity in the vehicle interior. The air
filter cleans the air, thus improving the inte-
rior climate.
The "Cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. Optimum climate control is only ach-
ieved with the side windows and roof closed.
If you start the engine using your smartphone,
the last selected climate control setting is
reactivated (
Ypage 154).
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (
Ypage 143).
iVentilate the vehicle for a brief period
during warm weather, e.g. using the con- venience opening feature (
Ypage 99). This
will speed up the cooling process and the
desired interior temperature will be
reached more quickly.
iThe integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol- lutants and odors. A clogged filter reduces
the amount of air supplied to the vehicle
interior. For this reason, you should always
observe the interval for replacing the filter,
which is specified in the Maintenance
Booklet. As it depends on environmental
conditions, e.g. heavy air pollution, the
interval may be shorter than stated in the
Maintenance Booklet.
iIt is possible that the blower may be acti-
vated automatically 60 minutes after the
SmartKey has been removed depending on various factors, e.g. the outside tempera-
ture. The vehicle is then ventilated for
30 minutes t
o dry the climate control sys-
tem.
136Overview of climate control systems
Climate control
If you activate the residual heat function at
high temperatures, only the ventilation will be
activated. The blower runs at medium speed.
XTo deactivate:press theÁrocker
switch up or down.
The indicator lamp in the Árocker
switch goes out.
Residual heat is deactivated automatically:
Rafter approximately 30 minutes
Rwhen the ignition is switched on
Rif the battery voltage drops
Perfume atomizer
Operating the perfume atomizer
GWARNING
If children open the perfume vial, they could
drink the perfume or it could come into con-
tact with their eyes. There is a risk of injury. Do not leave children unsupervised in the vehicle.
If the perfume liquid has been drunk, consult
a doctor. If perfume comes into contact with
your eyes or skin, rinse the eyes with clean
water. If you continue to experience difficul-
ties, consult a doctor.
HEnvironmental note
Full perfume vials must not
be disposed of with house-
hold rubbish. They must be
collected separately and
recycled to protect the envi-
ronment.
Dispose of full perfume vials
in an environmentally
responsible manner and
take them to a special wastecollection point.
:Perfume lid
;Perfume vial
The perfume atomizer helps to improve driv-
ing comfort.
Using COMAND, you can:
Rswitch the perfume atomizer on or off
Rregulate the perfume intensity (see the sep- arate operating instructions)
The following conditions can affect your per-
ception of the perfume intensity:
Roperating mode of the climate control sys-
tem
Rinterior temperature
Rtime of year or day
Rair humidity
Rphysiological condition of occupants, e.g.
fatigue or hunger
The perfume atomizer can only be operated
when the climate control system is switched
on and is only active when the glove box is
closed.
The perfume atomizer is provided with a pre-
filled perfume vial. You can also choose from
a variety of filled perfume vials and an empty
vial which you can fill yourself.
If you refill an empty perfume vial, observe the
separate information sheet attached to the
vial.
!If you do not use genuine Mercedes-Benz
interior perfumes, observe the manufactur-
ers' safety notices on the perfume packag-
ing.
144Operating the climate control systems
Climate control
The ECO start/stop function is activated
whenever you switch on the engine using the
SmartKey or the Start/Stop button.
If the engine has been switched off automat-ically by the ECO start/stop function, the
è ECO symbol is shown in the multifunc-
tion display.
The ECO start/stop function is only available
in drive program E(drive program Con
Mercedes-AMG vehicles).
Automatic engine switch-off
If the vehicle is braked to a standstill in Dor N,
the ECO start/stop function switches off the
engine automatically.
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green.
Rthe outside temperature is within the range
that is suitable for the system.
Rthe engine is at normal operating temper-
ature.
Rthe set temperature for the vehicle interior
has been reached.
Rthe battery is sufficiently charged.
Rthe system detects that the windshield is
not fogged up when the air-conditioning
system is switched on.
Rthe hood is closed.
Rthe driver's door is closed and the driver's
seat belt is fastened.
All of the vehicle's systems remain active
when the engine is stopped automatically.
The HOLD function can be activated if the
engine has been switched off automatically. It
is then not necessary to continue applying the
brakes during the automatic stop phase.
When you depress the accelerator pedal, the
engine starts automatically and the braking
effect of the HOLD function is deactivated.
All vehicles (except Mercedes-AMG vehi-
cles): automatic engine switch-off can take place a maximum of four times in a row (initial
stop, then three subsequent stops).
Mercedes-AMG vehicles:
the number of
consecutive automatic engine switch-offs is
unlimited.
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function
by pressing the ECO button
Ryou switch to drive program Sor M
Rin transmission position Dor Nthe brake
pedal is released and the HOLD function is
not active
Ryou depress the accelerator pedal
Ryou engage reverse gear R
Ryou move the transmission out of position
P
Ryou unfasten your seat belt or open the
driver's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe battery's condition of charge is too low
Shifting the transmission to position Pdoes
not start the engine.
156Driving
Driving and parking
For more dynamic changes, carry out a man-
ual reset.
For further information on the ECO display,
see (
Ypage 236).
Braking
Important safety notes
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.
Downhill gradients
!On long and steep gradients, you must
reduce the load on the brakes by shifting
early to a lower gear. This allows you to take
advantage of the engine braking effect and
helps avoid overheating and excessive
wear of the brakes.
When you take advantage of the engine
braking effect, a drive wheel may not turn
for some time, e.g. on a slippery road sur-
face. This could cause damage to the drive
train. This type of damage is not covered by
the Mercedes-Benz warranty.
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 air-
flow 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 vehi-
cle washed, brake firmly while paying atten-
tion to the traffic conditions. This will warm up
the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt
residue 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 atten-
tion 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
!If the red brake warning lamp lights up in
the instrument cluster and you hear a warn-
ing tone while the engine is running, the
brake fluid level may be too low. Observe
176Driving tips
Driving and parking
AMG high-performance and ceramic
brakes
The high-performanc ebrak esystem is only
available on Mercedes-AM Gvehicles.
The AM Gbrak esystems are designed for
heav yloads .This may lead to noise when
braking .This will depend on :
RSpeed
RBraking force
REnvironmental conditions, suc has temper-
atur eand humidit y
The wear of individual component sof th e
brak esystem, suc has th ebrak epads/lining s
or brak ediscs, depend son th eindividual driv -
ing style and operating conditions.
Fo rthis reason ,it is impossible to state a
mileage that will be valid under all circum -
stances. An aggressive driving style will lead
to high wear .You can obtain further informa-
tion about this from your authorize d
Mercedes-Benz Center.
New and replace dbrak epads and disc sonly
reac htheir optimum braking effec tafter sev -
eral hundre dkilometers of driving .Compen -
sat efor this by applyin ggreate rforce to th e
brak epedal .Kee pthis in mind, and adapt
your driving and braking accordingly during
this break-in period.
Excessive heav ybraking result sin corre-
spondingly high brak ewear . Observ eth e
brak ewear warning lamp in th einstrumen t
cluste rand note any brak estatus message s
in th emultifunction display. Especially for
high performance driving ,it is important to
maintai nand hav
eth eb
rak esystem checke d
regularly.
Driving onwet roads
Hydroplaning
If water has accumulated to acertain dept h
on th eroad surface, there is adanger of
hydroplaning occurring, eve nif:
Ryou driv eat low speeds.
Rth etires hav eadequat etread depth.
Fo rthis reason ,in th eevent of heav yrain or in
condition sin whic hhydroplaning may occur ,
you mus tdriv ein th efollowin gmanner:
Rlower your speed.
Ravoi druts.
Ravoi dsudde nsteering movement s.
Rbrakecarefully.
Driving onflooded roads
!Do no tdriv ethroug hflooded areas .
Chec kth edept hof any water before driving
throug hit.Drive slowly throug h standing
water. Otherwise, water may ente rth e
vehicl einterior or th eengin ecompartment.
This can damag eth eelectronic compo -
nent sin th eengin eor th eautomatic trans -
mission .Water can also be drawn in by th e
engine's air suction nozzles and this can
caus eengin edamage.
Winter driving
GWARNIN G
If you shif tdown on aslipper yroad surfac ein
an attemp tto increas eth eengine's braking
effect, th edrive wheels could lose their grip.
There is an increased danger of skiddin gand
accidents .
Do no tshif tdown for additional engin ebrak -
ing on aslipper yroad surface.
GDANGER
If th eexhaust pipe is blocke dor adequat e
ventilation is no tpossible, poisonous gase s
suc has carbon monoxide (CO) may ente rth e
vehicle. This is th ecase, e.g. if th evehicl e
178Driving tips
Driving and parking