light MERCEDES-BENZ B-Class 2017 W246 Workshop Manual

X
Reach under the right-hand side of trim 0084
and lightly tug along the entire length of the
trim in order to unclip 0083it.
X Pull out connector 006Bof the surround lighting
by releasing the latches.
X Place paneling 0084to one side. X
On the side where the bulb is to be replaced,
unclip the remaining part of trim 006Cfrom the
assembly with a strong tug, until the bulb
holder is accessible. X
Remove bulb holder 006Dusing both sides of
lever 006E. Bulb holder X
Backup lamp 006F: pull the bulb out of bulb
holder 006D.
X Insert the new bulb into the bulb holder.
X Rear fog lamp 0070: press the bulb gently into
bulb holder 006D, turn it counter-clockwise and
remove it from the bulb holder.
X Insert the new bulb into the bulb holder and
turn it clockwise.
X Reinsert the bulb holder until you hear it
engage audibly.
X Position paneling 006Cand engage it in place by
tapping it with your hand.
X Before continuing with the installation, check
that all the metal clips are inserted in the parts placed to one side: 2 clips 0044in the upper part
of handle 0087and 5 clips 0083in paneling 0084.
X If not, remove the missing metal clips from
the metal openings in the tailgate and insert
them in the appropriate places.
X Take paneling 0084and connect plug connector
006B to the surround lighting.
i The surround lighting only illuminates when
the tailgate has been shut and reopened.
X Position paneling 0084and engage it in place by
tapping it with your hand, starting from the
outside.
X Clip in the lower section of handle 0043at posi-
tion 0044again.
X Insert the upper section of handle 0087into
lower section 0043and engage with recess 0085
again.
License plate lamp X
Switch off the lights.
X Open the tailgate.
X Apply a screwdriver to lamp lens 0043from the
outside. 94
Replacing bulbsLights and windshield wipers

X
Lever out lamp lens 0043and remove it.
X Replace the bulb.
X Insert lamp lens 0043into the license plate lamp
and press it in until it engages. Windshield wipers
Switching the windshield wipers
on/off
! Do not operate the windshield wipers when
the windshield is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windshield can scratch the glass
if wiping takes place when the windshield is
dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, always use
washer fluid when operating the windshield
wipers.
! If the windshield wipers leave smears on the
windshield after the vehicle has been washed
in an automatic car wash, wax or other resi-
dues may be the reason for this. Clean the
windshield using washer fluid after washing
the vehicle in an automatic car wash. Combination switch
0047
003F Windshield wiper off
0048 0062 Intermittent wipe, low (rain sensor set
to low sensitivity)
0049 0063 Intermittent wipe, high (rain sensor
set to high sensitivity)
004A 00AA Continuous wipe, slow
004B 00A9 Continuous wipe, fast
0084 00D3 Single wipe/00D4 Wipes the wind-
shield using washer fluid X
Switch on the ignition.
X Turn the combination switch to the corre-
sponding position.
! Vehicles with a rain sensor: if the windshield
becomes dirty in dry weather conditions, the
windshield wipers may be activated inadver-
tently. This could then damage the windshield
wiper blades or scratch the windshield.
For this reason, you should always switch off
the windshield wipers in dry weather.
Vehicles with a rain sensor: in the 0062or0063
position, the appropriate wiping frequency is
automatically set according to the intensity of
the rain. In the 0063position, the rain sensor is
more sensitive than in the 0062position, caus-
ing the windshield wiper to wipe more fre-
quently.
If the wiper blades are worn, the windshield will no longer be wiped properly. This could prevent
you from observing the traffic conditions. Switching the rear window wiper on/
off Combination switch
0043
00C5 Switch
0048 00E2 Wipes with washer fluid
0049 ISwitches on intermittent wiping
004A 0Switches off intermittent wiping
004B 00E2 Wipes with washer fluid
X Switch on the ignition.
X Slide switch 0043on the combination switch to
the corresponding position.
When the rear window wiper is switched on,
the 00C5 symbol appears in the assistance
graphic in the instrument cluster. Further
information on the assistance graphic
(Y page 162). Windshield wipers
95Lights and windshield wipers Z

Replacing the wiper blades
Important safety notes G
WARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
! To avoid damaging the wiper blades, make
sure that you touch only the wiper arm of the
wiper.
! Never open the hood/tailgate if a wiper arm
has been folded away from the windshield/
rear window.
Never fold a windshield wiper arm without a
wiper blade back onto the windshield/rear
window.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release the
wiper arm without a wiper blade and it falls
onto the windshield/rear window, the wind-
shield/rear window may be damaged by the
force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
Changing the windshield wiper blades Removing the wiper blades
X Vehicles without KEYLESS-GO: remove the
SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: switch off the
engine.
X Fold the wiper arm away from the windshield. X
Hold on to the wiper arm with one hand. With
the other hand, turn wiper blade in direction
of arrow 0043away from the wiper arm as far as
it will go.
X Slide catch 0044in the direction of arrow 0087
until it engages in the removal position with a noticeable click. X
Remove the wiper blade in the direction of
arrow 0085away from the wiper arm.
Installing the wiper blades X
Insert the new wiper blade into the wiper arm
in the direction of arrow 0043.96
Windshield wipersLights and windshield wipers

X
Slide catch 0044in the direction of arrow 0087
until it engages in the locking position with a
noticeable click.
X Make sure that the wiper blade is seated cor-
rectly.
X Fold the wiper arm back onto the windshield. X
Remove protective film 0043of the service indi-
cator on the tip of the wiper blade.
If the color of the service indicator changes from black to yellow, the wiper blades should be
replaced.
i The duration of the color change varies
depending on the usage conditions. Replacing the rear window wiper blade Removing a wiper blade
X
Vehicles without KEYLESS-GO: remove the
SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: switch off the
engine.
X Fold wiper arm 0043away from the rear window
until you feel it engage.
X Position wiper blade 0044at a right angle to
wiper arm 0043.
X Hold wiper arm 0043and press wiper blade 0044
in the direction of the arrow until it releases.
X Remove wiper blade 0044.
Installing a wiper blade
X Place new wiper blade 0044onto wiper arm 0043.
X Hold wiper arm 0043and press wiper blade 0044
in the opposite direction to the arrow until it
engages.
X Make sure that wiper blade 0044is seated cor-
rectly.
X Position wiper blade 0044parallel to wiper
arm 0043.
X Fold wiper arm 0043back onto the rear window. Windshield wipers
97Lights and windshield wipers Z

Problems with the windshield wipers
Problem
Possible causes/consequences and
0050
0050Solutions The windshield wipers
are jammed. Leaves or snow, for example, may be obstructing the windshield wiper
movement. The wiper motor has been deactivated.
X For safety reasons, you should remove the SmartKey from the igni-
tion lock.
X Remove the cause of the obstruction.
X Switch the windshield wipers back on. The windshield wipers
fail completely. The windshield wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windshield wipers checked at a qualified specialist work-
shop. The windshield washer
fluid from the spray noz-
zles no longer hits the
center of the windshield. The spray nozzles are misaligned.
X Have the spray nozzles adjusted at a qualified specialist workshop. 98
Windshield wipersLights and windshield wipers

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