MERCEDES-BENZ B-Class 2017 W246 Owner's Manual

Overview of climate control systems
General notes
Observe the settings recommended on the fol-
lowing pages. The windows could otherwise fog up.
To prevent the windows from fogging up:
R switch off climate control only briefly
R switch on air-recirculation mode only briefly
R switch on the cooling with air dehumidifica-
tion function
R switch on the defrost windshield function
briefly, if required
The dual-zone automatic climate control regu-
lates the temperature and the humidity in the
vehicle interior and filters undesirable substan-
ces out of the air.
Dual-zone automatic climate control is only
operational when the vehicle is ready to drive.
Optimum operation is only achieved with the
side windows closed.
Always keep the ventilation flaps behind the
side paneling in the cargo compartment clear.
Otherwise the vehicle will not be ventilated cor- rectly. i
Ventilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature (Y page 76). This will speed
up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. It also reduces gaseous pollutants 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 Book-
let.
i It is possible that under certain circumstan-
ces the residual heat function may be activa-
ted automatically an hour after the SmartKey has been removed in order to dry the auto-
matic climate control. The vehicle is then ven-tilated for 30 minutes. Control panel for dual-zone automatic climate control
0043
Sets the temperature, left (Y page 101)
0044 Sets climate control to automatic (Y page 101)
0087 Defrosts the windshield (Y page 102)
0085 Increases the airflow (Y page 102)
0083 Sets the air distribution (Y page 102) Overview of climate control systems
99Climate control

0084
Display
006B Switches air-recirculation mode on/off (Y page 104)
006C Activates/deactivates climate control (Y page 100)
006D Sets the temperature, right (Y page 101)
006E Activates or deactivates maximum cooling (Y page 103)
006F Switches cooling with air dehumidification on/off (Y page 100)
0070 Reduces the airflow (Y page 102)
0071 Switches the rear window defroster on/off (Y page 103)
0072 Switches the ZONE function on/off (Y page 102)Optimum use of 3-zone automatic cli-
mate control
Climate control system The following contains instructions and recom-
mendations to enable you to get the most out of
your dual-zone automatic climate control.
R Activate climate control using the 0058and
005A buttons. The indicator lamps in the
0058 and005A 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 temper-
ature settings on the driver's side for the
front-passenger side as well. The indicator
lamp in the 00D6button goes out.
R If you change the settings of the climate con-
trol system, the climate status display
appears for approximately three seconds at
the bottom of the screen in the multimedia
system display; see separate operating
instructions. You will see the current settings
of the various climate control functions.
You can choose between various drive programs
with the program selector button (Y page 114).
If you have selected drive program E+:
R the cooling output is reduced when cooling
R heat output is reduced when heating
R the time for which the rear window defroster
will run is reduced
If you have selected drive program Eor S, the
current climate settings are maintained. Operating the climate control sys-
tems
Activates/deactivates climate con-
trol
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
Dual-zone automatic climate control X
Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X To activate: press the0058button.
The indicator lamp in the 0058button lights
up. Airflow and air distribution are set to auto- matic mode.
or X Press the 0078button.
The indicator lamp in the 0078button goes
out. The previously selected settings are
restored.
X To deactivate: press the0078button.
The indicator lamp in the 0078button lights
up.
i Activate climate control primarily using the
0058 button. Switches cooling with air dehumidifi-
cation on/off
General notes If you deactivate the "Cooling with air-dehumid-
ification" function, the air inside the vehicle will
not be cooled. The air inside the vehicle will also 100
Operating the climate control systemsClimate control

not be dehumidified. The windows can fog up
more quickly. Therefore, only deactivate the
"Cooling with air-dehumidification" function
briefly.
The "Cooling with air-dehumidification" function is operational when the vehicle is ready to drive.
The air inside the vehicle is cooled and dehu-
midified according to the temperature selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a malfunc-
tion. Activating/deactivating X
Press the 005Abutton.
The indicator lamp in the 005Abutton lights
up or goes out.
The indicator lamp in the button indicates that the respective function is activated. The
"Cooling with air dehumidification" function
has a delayed switch-off feature.
Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and
0050 0050Solutions The indicator lamp in the
005A button flashes
three times or remains
off. The "Cooling with air
dehumidification" func-
tion cannot be switched
on. Cooling with air dehumidification has been deactivated due to a mal-
function.
X Visit a qualified specialist workshop. Setting climate control to automatic
General notes In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature of the dispensed air, the airflow and the air dis- tribution.
The "Cooling with air dehumidification" function
is activated automatically in automatic mode.
Setting climate control to automatic X
Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X Set the desired temperature.
X To activate: press the0058button.
The indicator lamp in the 0058button lights
up. Automatic air distribution and airflow are
activated. X
To switch to manual mode:press the 004F
or 004A button.
or
X Press the 0097or0095 button.
The indicator lamp in the 0058button goes
out. Automatic air distribution and airflow are deactivated. Setting the temperature
Different temperatures can be set for the driv-
er's and front-passenger sides. The set temper-
ature is automatically maintained at a constant
level.
X Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X To increase or decrease: turn control0043or
006D counter-clockwise or clockwise. Only
change the temperature setting in small
increments. Start at 72 ‡ (22 †). Operating the climate control systems
101Climate control

Setting the air distribution
Air distribution settings 0061
Directs air through the defroster vents
009C Directs air through the center and side air
vents
009B Directs air through the footwell air vents
009F Directs air through the center, side and
footwell vents
0087 Directs air through the defroster, center
and side air vents
0086 Directs air through the defroster and
footwell vents
008F Directs air through the defroster, center,
side and footwell vents
i Regardless of the air distribution setting,
airflow is always directed through the side air
vents. The side air vents can only be closed if the adjusters are turned clockwise until they
engage.
Setting the air distribution X
Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X Press the 004For004A button repeatedly
until the desired symbol appears in the dis-
play. Setting the airflow
X Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X To increase or reduce:press the 0097or
0095 button. Switching the ZONE function on/off
X To activate: press the00D6button.
The indicator lamp in the 00D6button lights
up.
The temperature setting for the driver's side
is not adopted for the front-passenger side.
X To deactivate: press the00D6button.
The indicator lamp in the 00D6button goes
out.
The temperature setting for the driver's side
is adopted for the front-passenger side. Defrosting the windshield
General notes You can use this function to defrost the wind-
shield or to clear a fogged up windshield and
side windows.
i You should only select the "Windshield
defrosting" function until the windshield is
clear again.
Switching the "Windshield defrosting"
function on or off X
Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X To activate: press the0064button.
The indicator lamp in the 0064button lights
up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windshield and front
side windows
R air-recirculation mode off
Vehicles with windshield heating: the
windshield heating is switched on automati-
cally using the "Windshield defrosting" func-
tion.
i The "Windshield defrosting" function auto-
matically sets the blower output to the opti-
mum defrosting effect. As a result, the airflow
may increase or decrease automatically after
the 0064 button is pressed.
i You can adjust the blower output manually
while the "Windshield defrosting" function is
in operation:
Press the 00F2or00F3 button.
X To deactivate: press the0064button.
The indicator lamp in the 0064button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or X Press the 0058button.
The indicator lamp in the 0064button goes
out. Airflow and air distribution are set to
automatic mode. 102
Operating the climate control systemsClimate control

or
X Turn temperature control 0043or006D counter-
clockwise or clockwise (Y page 99).MAX COOL maximum cooling
The MAX COOL function is only available in vehi-
cles for the USA.
The MAX COOL function only works when the
vehicle is ready to drive.
X To activate: press the00C9button.
The indicator lamp in the button lights up.
X To deactivate: press the00C9button.
The indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate control
switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on Defrosting the windows
Windows fogged up on the inside X
Activate the 005A"Cooling with air dehumid-
ification" function.
X Activate automatic mode 0058.
X If the windows continue to fog up, activate the
0064 "Windshield defrosting" function. i
You should only select this setting until the
windshield is clear again.
Windows fogged up on the outside X
Activate the windshield wipers.
X Set the air distribution to 009Cor009B.
i You should only select this setting until the
windshield is clear again. Rear window defroster
General notes The rear window defroster has a high current
draw. You should therefore switch it off as soon
as the rear window is clear. Otherwise, the rear window defroster switches off automatically
after several minutes.
If the battery voltage is too low, the rear window
defroster may switch off.
Activating/deactivating X
Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X Press the 006Cbutton.
The indicator lamp in the 006Cbutton lights
up or goes out.
Problems with the rear window defroster Problem
Possible causes/consequences and
0050 0050Solutions The rear window
defroster has deactiva-
ted prematurely or can-
not be activated. The battery has not been sufficiently charged.
X Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster can be activated again. Operating the climate control systems
103Climate control

Switching air-recirculation mode
on/off
General notes You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle from
outside. The air already inside the vehicle will
then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating/deactivating X
Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X To activate: press the008Abutton.
The indicator lamp in the 008Abutton lights
up.
Air-recirculation mode switches on automati-
cally:
R at high outside temperatures
R at high levels of pollution
When air-recirculation mode is activated auto-
matically, the indicator lamp in the 008Abutton
is not lit. Outside air is added after about
30 minutes.
X To deactivate: press the008Abutton.
The indicator lamp in the 008Abutton goes
out.
i Air-recirculation mode deactivates auto-
matically:
R after approximately five minutes at outside
temperatures below approximately 45 ‡
(7 †)
R after approximately five minutes if the
"Cooling with air dehumidification" func-
tion is deactivated
R after approximately 30 minutes at outside
temperatures above approximately 45 ‡
(7 †) if the cooling with air dehumidifica-
tion function is activated Convenience opening or closing using
the air-recirculation button G
WARNING
When using the convenience closing feature,
parts of the body could be trapped in the clos- ing area when a side window is being closed. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure. G
WARNING
During convenience opening parts of the body could be drawn in or become trapped
between the side window and window frame.
There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
one becomes trapped, immediately press
the 0062 switch in the door to stop the move-
ment of the side windows. To continue closing the side window, pull on the 0062switch.
X Convenience closing feature: press and
hold the 008Abutton until the side windows
start to close automatically.
The indicator lamp in the 008Abutton lights
up. Air-recirculation mode is activated.
If parts of the body are in the closing area during convenience closing, proceed as follows:
X Press the 0062button to stop the side win-
dows.
The side window stops.
X To then open the side window, press the 0062
button again.
or X Press and hold the 008Abutton again for at
least two seconds.
The side windows move in the opposite direc- tion.
X Convenience opening feature: press and
hold the 008Abutton until the side windows
start to open automatically.
The indicator lamp in the 008Abutton goes
out. Air-recirculation mode is deactivated. 104
Operating the climate control systemsClimate control

Notes on the automatic reversing feature for the
side windows (Y page 75).
i If you open the side windows manually after
closing them with the convenience closing
feature, they will remain in this position when
opened using the convenience opening fea-
ture. Pre-entry climate control via Smart-
Key
General notes Before getting in, the vehicle interior can be
briefly warmed or ventilated in advance. In addi-
tion, the air from the air vent can be pre-cooled.
The high-voltage battery must be sufficiently
charged before the "Pre-entry climate control
via key" function can be activated.
Activating/deactivating When the vehicle is unlocked using the Smart-
Key or KEYLESS-GO, the climate control func-
tions are activated.
The pre-cooling and pre-heating climate control functions last 5 minutes.
When the vehicle is pre-cooled, the following
functions are activated as necessary:
R Climate control system
R Cooling with air dehumidification
R Blower
When the vehicle is pre-heated, the following
functions are activated as necessary:
R Climate control system
R Blower
R Seat heating
R Windshield heating
R Rear window defroster
Pre-entry climate control is automatically
switched off when operational readiness mode
is requested.
Activating or deactivating You can activate and deactivate the pre-entry
climate control (via SmartKey) function using
the on-board computer in the E-CELL
E-CELL submenu
(Y page 164). i
If the condition of charge of the high-voltage
battery is below the specified minimum con-
dition of charge, pre-entry climate control will not be activated even if it has been set. Pre-entry climate control at departure
time and immediate pre-entry climate
control
Important safety notes G
WARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
General notes Using the "Pre-entry climate control at depar-
ture time" function, you can cool or heat the
vehicle interior prior to the desired departure
time.
When using the "Pre-entry climate control at
departure time" function, the condition of
charge of the high-voltage battery must be
higher than the specified minimum condition of charge.
The running time of the climate control may be
reduced if:
R the vehicle is not connected to an electric
power supply
R the high-voltage battery is not fully charged
With active "Pre-entry climate control at depar-
ture time" the condition of charge of the high-
voltage battery can be reduced, even if the
charge cable connector is connected.
In certain situations, the desired interior tem-
perature cannot be reached.
When the vehicle is cooled, the following func-
tions are activated as necessary:
R Climate control system
R Cooling with air dehumidification
R Blower
When the vehicle is heated, the following func-
tions are activated as necessary:
R Climate control system
R Blower Operating the climate control systems
105Climate control Z

R
Seat heating
R Windshield heating
R Rear window defroster
"Immediate pre-entry climate control" is auto-
matically switched off when operational readi-
ness mode is requested.
Setting the departure time You can set a departure time for the "Pre-entry
climate control at departure time". Your vehicle
will then be cooled or heated until the desired
temperature is reached in time for the set depar-
ture time. "Pre-entry climate control at depar-
ture time" will be activated a maximum of
35 minutes before departure. If the departure is delayed, the vehicle will be heated or cooled fora further five minutes.
You can set the desired departure time in the E-
E-
CELL
CELL submenu on the on-board computer
(Y page 163).
Activating immediate pre-entry climate
control You can activate "Immediate pre-entry climate
control" even if the vehicle interior is already at
the desired temperature. This means that the
vehicle interior continues to be cooled or
heated, e.g. if the journey is interrupted for up to
50 minutes, and the interior temperature is kept constant. You can only set the desired temper-
ature using the climate control unit. If you do not
pre-select a temperature, the last temperature
set will be automatically adopted. To activate/deactivate "Immediate pre-
entry climate control"
X Press button 0043in the center console.
The blue or red indicator lamp in the button
lights up or goes out. The colors of the indicator lamps in the button
have the following meanings:
Re
dH eating activated
Blue Cooling activated
Yellow Pre-entry climate control at departure is preselected Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windshield and
the hood free of blockages, such as ice, snow or leaves.
R never cover the air vents or air intake grilles in
the vehicle interior.
i For optimal climate control in the vehicle,
open the air vents completely and set the
adjusters to the central position. Setting the air vents
0043
Side window defroster vent
0044 Side air vent 106
Air ventsClimate control

X
To open a side air vent: turn the adjuster in
side air vent 0044to the left.
X To close a side air vent: turn the adjuster in
side air vent 0044clockwise as far as it will go.
i The center and rear air vents are adjusted in
the same way. Air vents
107Climate control Z

Notes on breaking-in a new vehicle
The sensor system of some driving and driving
safety systems adjusts automatically while a
certain distance is being driven after the vehicle
has been delivered or after repairs. Full system
effectiveness is not reached until the end of this teach-in procedure.
New and replaced brake pads and discs only
reach their optimum braking effect after several
hundred kilometers of driving. Compensate for
this by applying greater force to the brake pedal. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Before driving away, you must ensure that,
for your own safety and to avoid damage, the charging cable has been removed from the
vehicle socket. Otherwise, you cannot shift
the transmission out of position P.
The braking performance of the electric motor
using recuperative braking is, in some operating modes, either reduced or not effective:
R when the condition of charge of the high-volt-
age battery increases
R if the high-voltage battery is not yet at a nor-
mal operating temperature
R when driving close to the maximum speed
R when the vehicle is almost stationary
R in transmission position N
R during and after ESP stability control
If you do not make an additional effort to apply
the brake yourself, the braking effect may not be sufficient. If necessary, counteract the reduced
regenerative braking effect by applying the
brake yourself.
Before commencing your journey, ensure that
the charging cable required for charging the
high-voltage battery is in the vehicle. 108
DrivingDriving an
d parking