display MERCEDES-BENZ M-Class 2014 W166 Owner's Guide

EBD (electronic brake force
distribution)
General information EBD monitors and controls the brake
pressure on the rear wheels to improve
driving stability while braking.
Important safety notes
i
Observe the "Important safety notes"
sectio nfor driving safety systems
(Y page 66). G
WARNING
If EBD has malfunctioned, the rear wheels can
still lock, e.g. under full braking. This
increases the risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked at a qualified
specialist workshop.
Observe information regarding indicator and
warning lamps (Y page 319) as well as
display messages (Y page 285).ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort. In
addition to the braking function, ADAPTIVE
BRAKE also has the HOLD function
(Y page 206) and hill start assist
(Y page 161). PRE-SAFE
®
Brake
General information i
Observe the "Important safety notes"
section (Y page 66).
PRE-SAFE ®
Brake is only available in vehicles
with DISTRONIC PLUS.
For PRE-SAFE ®
Brake to assist you when
driving, the radar sensor system must be
operational. With the help of the radar sensor system,
PRE-SAFE
®
Brake can detect obstacles that
are in front of your vehicle for an extended
period of time.
PRE-SAFE ®
Brake can help you to minimize
the risk of a collision with a vehicle ahead, and
reduce the effects of such a collision. If PRE-
SAFE ®
Brake has detected a risk of collision,
you will be warned visually and acoustically
as well as by automatic braking. PRE-SAFE ®
Brake cannot prevent a collision without your
intervention.
Important safety notes G
WARNING
PRE-SAFE ®
Brake will initially brake your
vehicle by a partial application of the brakes
if a danger of collision is detected. There may
be a collision unless you also brake.
Automatic emergenc ybraking cannot prevent
a collision. There is a risk of an accident.
Always apply the brakes yourself and try to
take evasive action. G
WARNING
PRE-SAFE ®
Brake cannot always clearly
identify objects and complex traffic
conditions.
In these cases, PRE-SAFE ®
Brake may:
R give an unnecessary warning and then
brake the vehicle
R not 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.
In order to maintai nthe appropriate distance
to the vehicle in front and thus prevent a
collision, you must apply the brakes yourself. 74
Driving safety systemsSafety

G
WARNING
PRE-SAFE ®
Brake does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As a result, PRE-SAFE ®
Brake may neither
give warnings nor intervene in all critical
situations. There is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
In the event of snowfall or heavy rain, the
recognitio ncan be impaired.
Recognition by the radar sensor system is
also impaired in the event of:
R dirt on the sensors or anything else
covering the sensors
R interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in fron tonadifferent line
relative to the center of your vehicle
Following damage to the fron tend of the
vehicle, have the configuratio nand operation
of the rada rsensors checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the fron tofthe vehicle.
Function X
To activate/deactivate: activate or
deactivate PRE-SAFE ®
Brake in the on-
board computer (Y page 272).
If the PRE-SAFE ®
Brake is not activated, the
0001 symbol appears in the multifunction
display.
Starting at a speed of around 4 mph
(7 km/h), this function warns you if you
rapidly approach a vehicle in front.An
intermitten twarning tone will then sound and the
000E distance warning lamp will light up
in the instrument cluster.
X Brake immediately to defuse the situation.
or
X Take evasive action provide ditis safe to do
so.
PRE-SAFE ®
Brake can also brake the vehicle
automatically under the following conditions:
R the driver and front-passenger have their
seat belts fastened
and
R the vehicle speed is between
approximately 4mph (7 km/h) and
124 mph (200 km/h)
At speeds of up to approximately 40 mph
(70 km/ h)PRE-SAFE ®
Brake can also detect
stationary objects. Examples of stationary
objects are stopped or parked vehicles.
i If there is an increased risk of collision,
preventive passenger protection measures
(PRE-SAFE ®
) are activated.
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking,
up to the point of full brake application.
Automatic emergency braking is not
performed until immediately prior to an
imminent accident.
You can prevent the intervention of the PRE-
SAFE ®
Brake at any time by:
R depressing the accelerator pedal further.
R activating kickdown.
R releasing the brake pedal.
The braking action of PRE-SAFE ®
Brake is
ended automatically if:
R you maneuver to avoid the obstacle.
R there is no longer any danger of a rear-end
collision.
R there is no longer an obstacle detected in
front of your vehicle. Driving safety systems
75Safety Z

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment 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.
i Read the information on qualified
specialist workshops: (Y page 28).Correct driver's seat position
G
WARNING
You could lose control of your vehicle if you
do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R faste nthe seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine. X
Observe the safety guidelines on seat
adjustment (Y page 105).
X Make sure that seat 0023is adjusted
properly.
Electrical seat adjustment (Y page 106)
When adjusting the seat, make sure that:
R you are as far away from the driver's air bag
as possible.
R you are sitting in a normal upright position.
R you can fasten the seat belt properly.
R you have moved the backrest to an almost
vertical position.
R you have set the seat cushion angle so that
your thighs are gently supported.
R you can depress the pedals properly.
X Check whether the head restraint is
adjusted properly.
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the center of the head restraint.A lso make
sure that you have adjusted the head
restraint so that the back of your head is as
close to the head restraint as possible .This
will be the case if the head restraint is
adjusted correctly (Y page 107).
X Observe the safety guidelines on steering
wheel adjustment (Y page 111).
X Make sure that steering wheel 0002is
adjusted properly.
Adjusting the steering wheel manually
(Y page 111)
Adjusting the steering wheel electrically
(Y page 112)
When adjusting the steering wheel, make
sure that:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the
instrumentc luster clearly.
X Observe the safety guidelines for seat belts
(Y page 55). 104
Correct driver's seat positionSeats, steering wheel and mirrors

In very rare cases, Adaptive Highbea
mAssist
may fail to recognize other road users that
have lights, or may recognize them too late.
In this or similar situations, the automatic
high-beam headlamps will not be deactivated
or activated regardless. There is a risk of an
accident.
Always carefully observe the traffic conditions
and switch off the high-beam headlamps in
good time.
Adaptive Highbeam Assist cannot take into
account road, weather or traffic conditions.
Adaptive Highbeam Assist is only an aid. You
are responsible for adjusting the vehicle's
lighting to the prevailing light, visibility and
traffic conditions.
In particular, the detection of obstacles can
be restricted if there is:
R poor visibility, e.g. due to fog, heavy rain or
snow
R dirt on the sensors or the sensors are
obscured
General notes You can use this function to set the
headlamps to change between low beam and
high beam automatically. The system
recognizes vehicles with their lights on, either
approaching from the opposite direction or traveling in front of your vehicle, and
consequently switches the headlamps from
high beam to low beam.
The system automatically adapts the low-
beam headlamp range depending on the
distance to the other vehicle. Once the
system no longer detects any other vehicles,
it reactivates the high-beam headlamps.
The system's optical sensor is located behind
the windshield near the overhead control
panel.
Switching Adaptive Highbeam Assist
on/off
0002
High-beam headlamps
0003 Turn signal, right
0023 High-beam flasher
0022 Turn signal, left
X To activate: activate the Adaptive
Highbeam Assist function using the on-
board computer (Y page 275).
X Turn the light switch to 0006.
X Press the combination switch beyond the
pressure point in the direction of arrow 0002
(Y page 123).
The 0005 indicator lamp in the
multifunction display lights up if it is dark
and the light sensor activates the low-beam
headlamps.
If you are driving at speeds above
approximately 28 mph (45 km/h):
The headlamp range is set automatically
depending on the distance between the
vehicle and other road users. 126
Exterior lightingLights and windshield wipers

If you are driving at speeds above
approximately 35 mph (55 km/h) and no
other road users have been detected:
The high-beam headlamps are switched on
automatically. The 000Cindicator lamp in
the instrument cluster also lights up.
If you are driving at speeds below
approximately 30 mph (45 km/h) or other
road users have been detected or the roads
are adequately lit:
The high-beam headlamps are switched off
automatically. The 000Cindicator lamp in
the instrument cluster goes out. The 0005
indicator lamp in the multifunction display
remains lit.
X To deactivate: move the combination
switch back to its normal position.
The 0005 indicator lamp in the instrument
cluster goes out. Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
X Switch on the lights and drive off.
The level of moisture diminishes,
depending on the length of the journey and
the weather conditions (humidity and
temperature).
If the level of moisture does not diminish:
X Have the headlamps checked at a qualified
specialist workshop. Interio
rlighting Overview of interior lighting
Overhead control panel
0002
0015 To switch the left-hand fron treading
lamp on/off
0003 0006 To switch the front interior lighting
on
0023 0003 To switch the rear interior lighting
on/off
0022 001D To switch the fron tinterior lighting/
automatic interio rlighting control off
0020 0015 To switch the right-han dfront
reading lamp on/off
0021 To switch the automatic interior lighting
control on Interior lighting control
General notes In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the SmartKey is in position
2
in the ignition lock.
The color and brightness of the ambient
lighting can be adjusted using the on-board
computer (Y page 275). Interior lighting
127Lights and windshield wipers Z

0023
To direct the airflow through the rear air vents
0022 To direct the airflow through the footwell vents Information about using dual-zone
automatic climate control
The following contains notes and
recommendations on optimum use of dual-
zone automatic climate control.
R Activate climate control using the 0006and
0007/0005 buttons. The indicator lamps in
the 0006 and0007/0005 buttons light up.
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting"
function briefly until the windshield is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side as well. The
indicator lamp above the 0004button goes
out.
R Vehicles with COMAND: if you change the
settings of the climate control system, the
climate status display appears for
approximately three seconds at the bottom
of the screen in the COMAND display .See
also the separate COMAND operating
instructions. You will see the current
settings of the various climate control
functions.
During automatic engine switch-off, the
climate control only operates at a reduced
capacity. If you require the full climate control
output, you can switch off the ECO start/stop
function by pressing the ECO button
(Y page 163). Overview of climate control systems
141Climate control

Control panel for 3-zone automatic climate control
USA only
Fron tcontrol panel
0002 To set the temperature, left (Y page 147)
0003 To defrost the windshield (Y page 149)
0023 To switch maximum cooling on/off (Y page 149)
0022 To switch cooling with air dehumidificatio non/off (Y page 145)
0020 To switch the rea rwindow defroster on/off (Y page 150)
0021 To set the temperature, right (Y page 147)
0014 To switch the ZONE function on/off (Y page 149)
0015 To switch climate control on/off (Y page 144)
0016 To set the air distribution (Y page 148)
0017 To increase the airflow (Y page 148)
0018 To reduce the airflow (Y page 148)
001A Display
001B To adjust the climate mode settings (Y page 147)
001C To activate/deactivate air-recirculation mode (Y page 151)
001D To set climate control to automatic (Y page 146)
Rear control panel
001E To increase the airflow (Y page 148)
001F To set the temperature (Y page 147)
0024 To set rear-compartment climate control to automatic (Y page 146)
0025 To direc tthe airflow through the rear air vents (Y page 148)
0026 To direct the airflow through the footwell vents (Y page 148)142
Overview of climate control systemsClimate control

0027
To switch rear-compartment climate control on/off (Y page 144)
0028 To reduce the airflow (Y page 148)Canada only
Front control panel
0002 To set the temperature, left (Y page 147)
0003 To defrost the windshield (Y page 149)
0023 To switch the residual heat function on/of f(Ypage 151)
0022 To switch cooling with air dehumidification on/off (Y page 145)
0020 To switch the rear window defroster on/off (Y page 150)
0021 To set the temperature, right (Y page 147)
0014 To switch the ZONE function on/off (Y page 149)
0015 To switch climate control on/off (Y page 144)
0016 To set the air distribution (Y page 148)
0017 To increase the airflow (Y page 148)
0018 To reduce the airflow (Y page 148)
001A Display
001B To adjust the climate mode settings (Y page 147)
001C To activate/deactivate air-recirculation mode (Y page 151)
001D To set climate control to automatic (Y page 146)
Rear control panel
001E To increase the airflow (Y page 148)
001F To set the temperature (Y page 147)
0024 To set rear-compartment climate control to automatic (Y page 146)
0025 To direct the airflow through the rear air vents (Y page 148)
0026 To direct the airflow through the footwell vents (Y page 148) Overview of climate control systems
143Climate control

0027
To switch rear-compartment climate control on/off (Y page 144)
0028 To reduce the airflow (Y page 148)Information about using 3-zone
automatic climate control
The following contains instructions and
recommendations to enable you to get the
most out of your automatic climate control.
R Activate climate control using the 0006and
0007 buttons. The indicator lamps above
the 0006 and0007 buttons light up.
R In automatic mode, you can also use the
000C button to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting"
function briefly until the windshield is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side and the rear
compartment as well. The indicator lamp
above the 0004button goes out.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The
residual heat function can only be activated
or deactivated with the ignition switched
off.
R Vehicles with COMAND: if you change the
settings of the climate control system, the
climate status display appears for
approximately three seconds at the bottom
of the screen in the COMAND display .See
also the separate COMAND operating
instructions. You will see the current
settings of the various climate control
functions. During automatic engine switch-off, the
climate control function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y
page 163). Operating the climate control
systems
Switching climate control on/off
General notes When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could fog up.
Therefore, switch off climate control only
briefly.
i
Switch on climate control primarily using
the 0006 button (Y page 146).
In the rear compartment, you can also switch
climate control on and off using the 0006and
000C buttons.
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To activate: press the0006button.
The indicator lamp in the 0006button lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the 000Cbutton.
The indicator lamp in the 000Cbutton goes
out. The previously selected settings are
restored.
X To deactivate: press the000Cbutton.
The indicator lamp in the 000Cbutton lights
up. 144
Operating the climate control systemsClimate control

Adjusting the climate mode settings
You can select the followin gclimate mode
settings in automatic mode:
FOCU Shigh airflow that is set slightly
cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft X
Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X Press the 0006button.
X Press the 000Cbutton repeatedly until the
desired climate mode appears in the
display. Setting the temperature
Dual-zone automatic climate control Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To increase/reduce: turn control0002or
0021 clockwise or counter-clockwise
(Y page 139).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †). 3-zone automatic climate control
Automatic climate control zones
You can selec
tdifferen ttemperature settings
for the driver's and front-passenger sides as
well as for the rear compartment.
X Turn the SmartKey to position 2in the
ignition lock (Y page 157).
X To increase/reduce the temperature in
the front: turn control 0002or0021 clockwise
or counter-clockwise (Y page 142).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
X To increase/reduce the temperature in
the rear compartment using the front
control panel: press the0004button.
The indicator lamp in the 0004button goes
out.
X Turn control 0002clockwise or counter-
clockwise (Y page 142).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
The temperature setting for the driver's
side is adopted for the rear compartment
and the front-passenger side.
X To increase/decrease the rear
compartment temperature using the
rear control panel: turn control001F
clockwise or counter-clockwise on the rear
control panel (Y page 142).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †). Operating the climate control systems
147Climate control