2014 MERCEDES-BENZ B-CLASS HATCHBACK Owners Manual

Adaptive Highbeam Assist
General notes You can use this function to set the head-
lamps to change between dipped beam and
main beam automatically. The system recog-
nises vehicles with their lights on, either
approaching from the opposite direction or
travelling in front of your vehicle, and conse-
quently switches the headlamps from main
beam to dipped beam.
Once the system no longer detects any other vehicles, it switches on the main-beam head-
lamps again.
The system's optical sensor is located behind
the windscreen near the overhead control
panel.
Important safety notes G
WARNING
Adaptive Highbeam Assist does not recognise road users:
R who have no lights, e.g. pedestrians
R who have poor lighting, e.g. cyclists
R whose lighting is blocked, e.g. by a barrier In very rare cases, Adaptive Highbeam Assist
recognises road users too late or not at all. In
this, or in similar situations, the automatic
main-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 main-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 if the sensors are
obscured
Switching Adaptive Highbeam Assist
on/off X
To switch on: turn the light switch to Ã.
X Press the combination switch beyond the
pressure point in the direction of arrow :.
The _ indicator lamp in the multifunc-
tion display lights up when it is dark and the
light sensor switches on the dipped-beam
headlamps.
If you are driving at speeds above approx-
imately 30 km/h and no other road users
are recognised:
The main-beam headlamps are switched on automatically. The Kindicator lamp in
the instrument cluster also lights up.
If you are driving at speeds below 25 km/h
or other road users are recognised or the
roads are adequately lit:
The main-beam headlamps are switched off
automatically. The Kindicator lamp in
the instrument cluster goes out. The _126
Exterior lightingLights and windscreen wipers

indicator lamp in the multifunction display
remains lit.
X To deactivate: move the combination
switch back to its normal position.
The _ indicator lamp in the multifunc-
tion display goes out. Headlamps misted 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 :
p Switches the left-hand front reading
lamp on/off
; c Switches the front interior lighting
on
= v Switches the rear interior lighting
on/off
? | Switches the front interior lighting/
automatic interior lighting control off
A p Switches the right-hand front read-
ing lamp on/off
B Switches the automatic interior lighting
control on Control panel in the grab handle in the
rear compartment
:
Switches 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,
unless the key is in position 2in the ignition
lock.
The colour and brightness for the ambient
lighting may be set using COMAND Online or
Audio 20 (see the separate operating instruc-
tions).
Automatic interior lighting control X
To switch on: set the switch to centre
position B.
X To switch off: set the switch to the |
position.
The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior lighting is activated for a short
time when the key is removed from the igni-
tion lock. This delayed switch-off can be
adjusted using COMAND Online or Audio 20
(see the separate operating instructions). Interior lighting
127Lights and windscreen wipers Z

Manual interior lighting control
X
To switch the front interior lighting on:
set the switch to the cposition.
X To switch off the interior lighting: set the
switch to the |position or (if the door is
closed) to the centre position.
X To switch the rear interior lighting on/
off: press the ubutton.
X To switch the reading lamps on/off:
press the pbutton. Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or X Lock and then unlock the vehicle using the
key. Replacing bulbs
Important safety notes
G
WARNING
Bulbs, lamps and plug connectors can
become very hot during use. When replacing a bulb, you could burn yourself on these com-
ponents. There is a risk of injury.
Allow these components to cool down before replacing the bulb.
Do not use a bulb that 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
Only operate bulbs in enclosed lamps
designed for that purpose. Only fit 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 tube when cold with alcohol or spirit and
rub it off with a lint-free cloth.
Protect bulbs from moisture during opera-
tion. Do not allow bulbs to come into contact
with liquids.
Replace only the bulbs listed (Y page 128).
Have the bulbs that you cannot replace your- self replaced at a qualified specialist work-
shop.
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.
Bulbs and lamps 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.
Vehicles with LED headlamps: the light
clusters of your vehicle are equipped with
LED light bulbs. Do not replace the bulbs
yourself. Contact a qualified specialist work-
shop which has the necessary specialist
knowledge and tools to carry out the work
required. Overview of bulb replacement – bulbs
You can replace the following bulbs. The
details for the bulb type can be found in the
legend. 128
Replacing bulbsLights and windscreen wipers

Vehicles with halogen headlamps
:
Dipped-beam headlamp: H7 55 W
; Main-beam headlamp: H7 55 W
= Turn signal lamp: PY 21 W Tail lamps (vehicles with halogen headlamps)
: Rear foglamp: P 21 W
; Reversing lamp: W 16 W
= Turn signal lamp: PY 21 W Licence plate lamp (vehicles with halogen head-
lamps)
: Licence plate lamp: C 5 W Replacing the front bulbs
Fitting/removing the cover on the front wheel arch 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 Turn rotary knob :through 90°.
Cover ;is released.
X Push cover ;down.
X Turn rotary knob :through 90°.
Cover ;is locked.
Dipped-beam headlamps (halogen
lamps) X
Remove the cover in the front wheel arch
(Y page 129).
X Turn housing cover :anti-clockwise and
remove it.
X Turn bulb holder ;anticlockwise and pull
out. Replacing bulbs
129Lights and windscreen wipers Z

X
Take the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert bulb holder ;and turn it clockwise.
X Press on housing cover :and turn it to the
right.
X Replace the cover in the front wheel arch
(Y page 129).
Main-beam headlamps (halogen head-
lamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anticlockwise and
remove it.
X Turn bulb ;anticlockwise and pull out.
X Insert the new bulb and engage it to the
stop.
X Press on housing cover :and turn it to the
right. Turn signal lamp (halogen headlamps)
X
Remove the cover in the front wheel arch
(Y page 129).
X Turn handle extension ;anti-clockwise
and pull it out of holder :.
X Press the bulb lightly, turn it anti-clockwise
and pull it out.
X Insert the new bulb into bulb holder :.
X Insert handle extension ;into holder :
and turn it clockwise until it engages. 130
Replacing bulbsLights and windscreen wipers

Replacing the rear bulbs
Opening and closing the side trim pan-
els View of left-hand side trim panel
You must open the side trim panel in the lug-
gage compartment before you can replace
the bulbs in the tail lamps.
X To open: turn release knob :anti-clock-
wise and remove side trim panel ;.
X To close: insert side trim panel ;and turn
release knob :clockwise.
Tail lamps Turn signals
X Switch off the lights.
X Open the luggage compartment.
X Open the side trim panel (Y page 131).X
Turn bulb holder :anti-clockwise and pull
out.
X Press the bulb lightly, turn it anti-clockwise
and pull it out. X
Insert the new bulb and turn it clockwise.
X Insert bulb holder :and turn it clockwise
until it engages.
X Close the side trim panel (Y page 131).
Reversing lamp and rear foglamp
Due to their location, have the bulbs in the
reversing lamp and the foglamp in the tailgate
replaced at a qualified specialist workshop. X
Switch off the lights.
X Open the tailgate.
X In recess ?on the inside of the closing
handle, prise out and remove the upper
section of handle =with a flat and smooth
object, e.g. a screwdriver.
X Pull the lower section of handle :using a
sharp, sudden movement to remove it from the trim and then place it to one side. Replacing bulbs
131Lights and windscreen wipers Z

X
Reach under the right-hand side of trim B
and apply a gentle jolting force along the
entire length of the trim in order to unclip it.
X Pull out connector Cof the surround light-
ing by releasing the latches.
X Place trim Bto one side. X
On the side where the bulb is to be
replaced, unclip the remaining part of trim
D from the assembly using a sudden,
sharp movement, until the bulb holder is
accessible. X
Remove bulb holder Eusing both sides of
lever F. Bulb holder
X Reversing lamp G: remove the bulb from
bulb holder E.
X Insert the new bulb into the bulb holder.
X Rear foglamp H: press the bulb gently
into bulb holder E, turn it anti-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 trim Dand 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 ;in
the upper part of handle =and 5 clips A
in trim B.
X If not, remove the missing metal clips from
the metal openings in the tailgate and
insert them in the appropriate places.
X Take trim Band connect plug connector
C to the surround lighting.
i The surround lighting only illuminates
when the tailgate has been shut and reop-
ened.
X Position trim Band engage it in place by
tapping it with your hand, starting from the
outside.
X Clip in the lower section of handle :again.
X Insert and engage the upper section of han-
dle =into lower section :.132
Replacing bulbsLights and windscreen wipers

Licence plate lighting
X
Switch off the lights.
X Open the tailgate.
X Apply a screwdriver to lamp lens :from
the outside.
X Lever out lamp lens :and remove it.
X Replace the bulb.
X Insert lamp lens :into the licence plate
lamp and press it in until it engages. Windscreen wipers
Switching the windscreen wipers on/
off
! Do not operate the windscreen wipers
when the windscreen is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windscreen can
scratch the glass if wiping takes place when the windscreen is dry.
If it is necessary to switch on the wind-
screen wipers in dry weather conditions,
always operate them using washer fluid.
! If the windscreen wipers leave smears on
the windscreen after the vehicle has been
washed in an automatic car wash, this may
be due to wax or other residue. Clean the
windscreen with washer fluid after an auto- matic car wash. Combination switch
1
$ Windscreen wipers off
2 Ä Intermittent wipe, low (rain sensor
set to low sensitivity)
3 Å Intermittent wipe, high (rain sensor
set to high sensitivity)
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B í Single wipe/ îwipe the wind-
screen using washer fluid
X Turn the key to position 1or 2in the ignition
lock (Y page 159).
X Turn the combination switch to the corre-
sponding position.
! Vehicles with a rain sensor: if the wind-
screen becomes dirty in dry weather con-
ditions, the windscreen wipers may be acti- vated inadvertently. This could damage the
windscreen wiper blades or scratch the
windscreen.
For this reason, you should always switch
off the windscreen wipers in dry weather.
Vehicles with a rain sensor: in the Äor
Å position, the appropriate wiping fre-
quency is automatically set according to the
intensity of the rain. In the Åposition, the
rain sensor is more sensitive than in the Ä
position, causing the windscreen wiper to
wipe more frequently.
If the wiper blades are worn, the windscreen
will no longer be wiped properly. This could
prevent you from observing the traffic condi-
tions. Windscreen wipers
133Lights and windscreen wipers Z