MERCEDES-BENZ B-Class 2017 W246 Owners Manual

Hazard warning lamps
X
To switch on the hazard warning lamps:
press button
0043.
All turn signals flash. If you now switch on a
turn signal using the combination switch, only the turn signal lamp on the corresponding
side of the vehicle will flash.
X To switch off the hazard warning lamps:
press button
0043.
The hazard warning lamps automatically switch
on if:
R an air bag is deployed or
R the vehicle decelerates rapidly from a speed
of above 45 mph (70 km/h) and comes to a
standstill
The hazard warning lamps switch off automati-
cally if the vehicle reaches a speed of above
6 mph (10 km/h) again after a full brake appli-
cation.
The hazard warning lamps still operate if the
ignition is switched off. Cornering light function
The cornering light function improves the illu-
mination of the road over a wide angle in the direction you are turning, enabling better visi-
bility in tight bends, for example. It can only be
activated when the low-beam headlamps are
switched on.
Active:
R if you are driving at speeds below 25 mph
(40 km/h) and switch on the turn signal or
turn the steering wheel
R if you are driving at speeds between 25 mph
(40 km/h) and 45 mph (70 km/h) and turn
the steering wheel
The cornering lamp may remain lit for a short
time, but is automatically switched off after no
more than three minutes. Headlamps fogged up on the inside
Certain climatic and physical conditions may
cause moisture to form in the headlamp. This
moisture does not affect the functionality of the headlamp. Interior lighting
Overview of interior lighting
Front overhead control panel 0043
003D Switches the left-hand front reading
lamp on or off
0044 004A Switches the front interior lighting on
0087 0043 Switches the rear interior lighting on or
off
0085 0033 Switches the front interior lighting/
automatic interior lighting control off
0083 003D Switches the right-hand front reading
lamp on or off
0084 Switches the automatic interior lighting con-
trol on Interior lighting
89Lights and windshield wipers Z

Control panel in the grab handle in the
rear compartment 0043
To switch the reading lamp on/off 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 when the SmartKey is in position 2in the
ignition lock.
The color and brightness for the ambient lighting
may be set via the multimedia system; see the
separate operating instructions.
Automatic interior lighting control X
To switch on: set the switch to center posi-
tion 0084.
X To switch off: set the switch to the 0033
position.
The interior lighting automatically switches on if you:
R unlock the vehicle
R open a door
R remove the SmartKey from the ignition lock
The interior light is activated for a short while
when the SmartKey is removed from the ignition
lock. This delayed switch-off can be adjusted via
the multimedia system; see the separate oper-
ating instructions. Replacing bulbs
Important safety notes
Xenon bulbs: G
DANGER
Xenon bulbs carry a high voltage. You can get an electric shock if you remove the cover of
the Xenon bulb and touch the electrical con-
tacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the Xenon bulb. Always have work on
the Xenon bulbs carried out at a qualified spe-
cialist workshop.
If your vehicle is equipped with Xenon bulbs, you
can recognize this by the following: the cone of light from the Xenon bulbs moves from the top
to the bottom and back again when you start the
drive system. For this to be observed, the lights must be switched on before the drive system is
started.
Headlamps and lights are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times. Have
the headlamp setting checked regularly.
Other bulbs: G
WARNING
Bulbs, lamps and connectors can get very hot when operating. If you change a bulb, you
could burn yourself on these components.
There is a risk of injury.
Allow these components to cool down before changing a bulb.
Do not use a bulb if it has been dropped or if its glass tube has been scratched.
The bulb may explode if
R you touch it
R it is hot
R you drop it
R you scratch it
Use bulbs only in closed lamps that have been
designed for this purpose. Only install spare
bulbs of the same type and the specified volt-
age.
Marks on the glass tube reduce the service life
of the bulbs. Do not touch the glass tube with
your bare hands. If necessary, clean the glass 90
Replacing bulbsLights and windshield wipers

tube when cold with alcohol or spirit and rub it
off with a lint-free cloth.
Protect bulbs from moisture during operation.
Do not allow bulbs to come into contact with
liquids.
Besides the Xenon bulbs, there are other bulbs
that you cannot replace yourself. Replace only
the bulbs listed (Y page 91). Have the bulbs
that you cannot change yourself replaced at a
qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
If the new bulb still does not light up, consult a
qualified specialist workshop.
Headlamps and lights are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times. Have
the headlamp setting checked regularly. Overview of bulb types
You can replace the following bulbs. The bulb
type can be found in the legend. Vehicles with halogen headlamps
0043
Turn signal lamp: PY 21 W
0044 High-beam headlamps: H7 55 W
0087 Parking lamps/standing lamps: W 5 W LL
0085 Low-beam headlamps: H7 55 W Vehicles with Bi-Xenon headlamps
0043
Cornering lamp: H7 55 W Tail lamps (vehicles with halogen headlamps)
0043 Rear fog lamp: P 21 W
0044 Backup lamp: W 16 W License plate lamp (vehicles with halogen head-
lamps)
0043
License plate lamp: C 5 W Replacing bulbs
91Lights andwindshield wipers Z

Replacing front bulbs
Removing and installing the cover in the
front wheel housing You must remove the cover of the front wheel
housing before you can change the front turn
signal lamp.
X To remove: switch off the lights.
X Turn the front wheels inwards.
X Slide cover 0043upwards.
Cover 0043is released.
X Unclip cover 0043.
X To install:clip in cover 0043.
X Push cover 0043down.
Cover 0043is locked.
Low-beam headlamps (halogen head-
lamps) X
Remove the cover in the front wheel housing
(Y page 92).
X Turn housing cover 0043counter-clockwise and
remove it.
X Turn bulb holder 0044counter-clockwise and
pull out.
X Pull the bulb out of bulb holder 0044.X
Insert the new bulb into bulb holder 0044.
X Insert bulb holder 0044and turn it clockwise.
X Press on housing cover 0043and turn it to the
right.
X Replace the cover in the front wheel housing
(Y page 92).
High-beam headlamps (halogen head-
lamps) X
Switch off the lights.
X Open the hood.
X Turn housing cover 0043counter-clockwise and
remove it.
X Turn bulb holder 0044counter-clockwise and
pull out.
X Insert the new bulb and engage it to the stop.
X Press on housing cover 0043and turn it to the
right.
Parking lamps/standing lamps (halo-
gen headlamps) X
Switch off the lights.
X Open the hood.
X Turn housing cover 0043counter-clockwise and
remove it. 92
Replacing bulbsLights and windshield wipers

X
Pull out bulb holder 0044.
X Pull the bulb out of bulb holder 0044.
X Insert the new bulb into bulb holder 0044.
X Insert bulb holder 0044.
X Press on housing cover 0043and turn it to the
right.
Turn signals (halogen headlamps) X
Switch off the lights.
X Open the hood.
X Turn bulb holder 0043counter-clockwise and
pull out.
X Turn the bulb counter-clockwise and pull it
out of bulb holder 0043.
X Insert the new bulb into bulb holder 0043.
X Insert bulb holder 0043and turn it clockwise
until it engages.
Cornering light function (Xenon bulbs) X
Switch off the lights.
X Open the hood.
X Turn housing cover 0043counter-clockwise and
remove it.
X Turn bulb holder 0044counter-clockwise and
pull out. X
Pull the bulb out of bulb holder 0044.
X Insert new bulb into bulb holder 0044.
X Insert bulb holder 0044and turn it clockwise.
X Press on housing cover 0043and turn it to the
right. Replacing rear bulbs
Tail lamps Backup lamp and rear fog lamp
Due to their location, have the bulbs in the
backup lamp and the fog lamp in the tailgate
replaced at a qualified specialist workshop. X
Switch off the lights.
X Open the tailgate.
X In recess 0085on the inside of the closing han-
dle, pry off and unclip 0044the upper section of
handle 0087with a flat smooth object, e.g. a
screwdriver, and remove.
X Pull the lower section of handle 0043using a
sharp, sudden movement to remove it from
the paneling and then place it to one side. Replacing bulbs
93Lights and windshield wipers Z

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