lock MERCEDES-BENZ CLA 2018 Service Manual

sure fluctuations in the vehicle interior.
Change the position of the sliding sunroof or
open as ide window slightly to reduce or elim-
inate these noises.
Sliding sunroof reversing feature In the following section, the term "sliding sun-
roof" refers to the panorama roof with power
tilt/sliding panel.
The sliding sunroof is equipped with an auto-
matic reversing feature. If as olid object blocks
or restrict st he sliding sunroof during the closing
process, the sliding sunroof opens agai na uto-
matically .H owever, the automatic reversing
feature is only an aid and does not relieve you of
the responsibility of paying attention when clos-
ing the sliding sunroof.
G WARNING
The reversing feature does not react: R
to soft, light and thin objects, e.g. small fin-
gers R
over the last 1/6 in (4 mm) of the closing
movement R
during resetting R
when closing the sliding sunroof agai nm an-
ually immediately after automatic reversing
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is ar isk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped: R
release the switch immediately ,o rR
press the switch in any direction during the
automatic closing process
The closing process is stopped. Operating the panoram ar oof with
power tilt/sliding panel
Opening and closing
C
To raise D
To open

If contact is made with ar oof carrier approved
by Mercedes-Benz, the sliding sunroof lowers
slightly but remains raise datt he rear.
Rain-closing feature The rain-closing feature is only available for vehi-
cles with ar ain sensor.
When the SmartKey is in position Z in the igni-
tion lock or is removed, the sliding sunroof
closes automatically: R
if it starts to rain. R
at extreme outsid et emperatures.R
after six hours. R
if there is am alfunction in the powe rs upply.
The panorama roof with powe rt ilt/sliding panel
remains raise datt he rear in order to allow ven-
tilation of the vehicle interior.
If the panorama roof with powe rt ilt/sliding
panel is obstructed whil eb eing closed by the
rain-closing feature, it opens again slightly. The
rain-closing feature is then deactivated.
The panorama roof with powe rt ilt/sliding panel
does not close if: R
it is raise datt he rear.R
it is blocked. R
no rain is falling on the area of the windshield
being monitored by the rain sensor. If the
vehicle ,f or example ,isu nder ab ridge or in a
carport, the field of the sensor may be cov-
ered.
Operating the rolle rs unblind for the
panorama roof with powe rt ilt/sliding
panel
Important safety notes
G WARNING
Parts of the body could become trapped
betwee nt he rolle rs unblind and frame or slid-
ing sunroof during automatic opening or clos-
ing. There is ar isk of injury.
When opening or closing, make sure that no
body parts are in the sweep of the rolle rs un-
blind. If somebod yb ecomes trapped: R
release the switch immediately ,o rR
during automatic operation, push the
switch briefl yina ny direction
The opening or closing procedure wil lbes top-
ped.
The rolle rs unblind shields the vehicle interior
from sunlight. The rolle rs unblind can only be
opened and closed when the panorama roof
with powe rt ilt/sliding panel is closed.
Rolle rs unblind reversin gf eatureThe rolle rs unblind is equipped with an auto-
matic reversing feature. If as olid object blocks
or restricts the rolle rs unblind during the closing
process, the rolle rs unblind opens again auto-
matically. The automatic reversing feature is
only an aid and is not as ubstitute for you ra tten-
tiveness when closing the rolle rs unblind.
G WARNING
The reversing feature does not react: R
to soft, ligh ta nd thin objects, e.g. small fin-
gers R
when closing the rolle rs unblind again man-
ually immediately after automatic reversal
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is ar isk of injury.
When closing the rolle rs unblind, make sure
that no body parts are in the sweep area.
If somebod yb ecomes trapped: R
release the switch immediately ,o rR
press the switch in any direction during the
automatic closing process
The closing process is stopped.Panorama roof with powe rt ilt/sliding panel 87
Opening and closing Z

Problems with the panorama roof with power tilt/sliding panel
G WARNING
If you do not reset the sliding sunroof after am alfunction or voltage supply interruption, then the
backing up function will malfunction or not work. The sliding sunroof closes with increased or
maximum force. Parts of the body could be trapped in the closing area in the process. This poses
an increased risk of injury or even fatal injury.
In such or similar situations always make sure that no parts of the body are in the closing area.
Always reset the sliding sunroof after am alfunction or voltage supply interruption.
! If the sliding sunroof still cannot be opened or closed as ar esult of am alfunction ,c ontact a
qualified specialist workshop.
Problem
Possible causes/consequences and P Solutions
The panorama roof with
power tilt/sliding panel
cannot be closed and
you cannot see the
cause. If the panorama roof with power tilt/sliding panel is obstructed during
closing and reopens again slightly: X
Immediately after it blocks, pull the W switch down again to the
point of resistance until the panorama roof with power tilt/sliding
panel is closed.
The panorama roof with power tilt/sliding panel is closed with more
force.
If the panorama roof with power tilt/sliding panel is obstructed again
during closing and reopens again slightly: X
Immediately after it blocks, pull the W switch down again to the
point of resistance until the panorama roof with power tilt/sliding
panel is closed.
The panorama roof with power tilt/sliding panel is closed without
the automatic reversing feature.Panoram ar oof with power tilt/sliding panel 89
Opening and closing Z

Problems with the seat heating Problem
Possible causes/consequences and P Solutions
The seat heating has
switched off prematurely
or cannot be switched
on. The on-board voltage is too low because too many electrical consum-
ers are switched on. X
Switch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating will switch
back on automatically.
Steering wheel
Important safety notes
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
fasten the seat belt
There is ar isk of an accident.
Adjust the driver's seat, head restraint ,s teer-
ing wheel and mirror and fasten your seat belt
before startin gt he engine.
G WARNING
Children could injure themselves if they
adjust the steering wheel. There is ar isk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
Adjusting the steering wheel
G WARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is ar isk of an
accident.
Before startin go ff, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion. C
Release lever D
Adjust st he steering wheel height

Folding th ee xterior mirrors in or out
electrically X
Turn th eS ma rtKey to position G or H in th e
ignition loc k( Y
page 122).X
Briefly press C .
Both exterio rm irror sf ol dinoro ut .
i Mak es ure that th ee xter io rm irror sa re
always folded out fully while driving .T hey
could otherwise vibrate .
i If you are driving faste rt ha n30m ph
(47 km/h), you can no longer fol dint he exte -
rio rm irrors.
Resetting th ee xterior mirrorsIf th eb attery has been disconnected or com-
pletely discharged, th ee xter io rm irror sm ust be
reset .T he exterio rm irror sw ill otherwise no t
fol dinw hen you select th e" Fold in mirror sw hen
locking" function in th eo n-bo ard computer
( Y
page 188). X
Turn th eS ma rtKey to position G in th ei gni-
tion loc k( Y
page 122).X
Briefly press C .
Folding th ee xterior mirrors in or out
automatically If th e" Fold in mirror sw hen locking" function is
activated in th eo n-bo ard computer
( Y
page 188): R
th ee xter io rm irror sf ol dina utomatically as
soo nasy ou loc kt he vehicl ef ro mt he outside .R
th ee xter io rm irror sf ol do ut again automati-
call yass oo nasy ou unlock th ev ehicl ea nd
then open th ed river' sorf ront-pa ssenger
door . i If th ee xter io rm irror sh ave been folded in
manually, they do no tf ol do ut .
Exterior mirror pushed out of position If an exterio rm irror has been pushed out of
position ,p rocee dasf ollows :X
Vehicles without electricall yf olding exte-
rior mirrors : mov et he exterio rm irror int o
th ec orre ct position manually. X
Vehicles with electricall yf olding exterior
mirrors : press and hold mirror-foldin gb utto n
( Y
page 97 )u ntil yo uh ea rt he mirror click into
place.
The mirror housing is engaged agai na nd you
can adjus tt he exterio rm irrors as usual
( Y
page 96).
Automati ca nti-glare mirrors
G WARNING
Electrolyte ma ye scape if the glas sinana ut o-
matic anti-glare mirror breaks .T he electrolyte
is harmfu la nd causes irritation. It must not
come into contact with your skin, eyes, res-
piratory organs or clothing or be swallowed.
There is ar is kofi njury.
If yo uc ome into contact with the electrolyte,
observe the following: R
Rinse off the electrolyte from your skin
immediatel yw it hw at er.R
Immediately rins et he electrolyte ou to f
your eyes thoroughl yw it hc lean water.R
If the electrolyte is swallowed, immediately
rins ey ou rm outh ou tt horoughly. Do not
induce vomiting. R
If electrolyte come si nto contact with your
ski norh ai roriss wallowed, see km edical
attentio ni mmediately. R
Immediately change ou tofc lothing which
ha sc ome into contact with electrolyte. R
If an allergi cr eactio no ccurs, see km edical
attentio ni mmediately.
The "Automatic anti-glare mirrors "f unctio ni s
onl ya vailable if the vehicl eise quippe dw it ht he
"Mirrors package". Mirrors 97
Seats, steering wheel an dm irrors Z

When leaving the vehicle, alway st ake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The memory function can be used at any time,
e.g. even when the SmartKey is not in the igni-
tion lock.
Storing settings With the memory function, you can store up to
three differen ts ettings, e.g. for three different
people.
The following settings are stored as as ingle
memory preset: R
seat and backres tp ositionR
driver's side: position of the exterior mirrors
on the driver's and front-passenger sides
X
Adjust the seat ( Y
page 92).X
Adjust the exterior mirror on the driver's side
( Y
page 96). X
Briefly press the M memory button and then
press preset position button 1 , 2 or 3 within
three seconds.
The settings are stored in the selected preset
position. At on es ounds when the settings
have been completed.
Calling up as tored settingX
Press and hold the relevant preset position
button 1 , 2 or 3 until the seat and exterior
mirrors are in the stored position.
i The setting procedure is interrupted as soon
as you release the storage position button. Memor yf unction 99
Seats, steering wheel and mirrors Z

take precedence ove rt he daytime running
lamps.
US Ao nly:
The daytime running lamps improve the visibility
of your vehicl ed ur in gt he day. To do this, the
daytime running lamps functio nm us tb e
switched on using the on-board computer
( Y
page 187).
If the engine is running and yo ut ur nt he light
switch to the ` or X position, the manual
setting st ake precedence ove rt he daytime run-
ning lamps.
Low-beam headlamps Even if the light senso rd oe sn ot detect tha titi s
dark, the parking lamps and low-bea mh ead-
lamps switch on when the ignition is switched on
and the light switch is se ttot he X position.
Thi sisa particularly usefu lf un ctio nint he event
of rain and fog. X
To switc ho nt he low-beam headlamps:
tur nt he SmartKe ytop osit ion H in the igni-
tio nl oc kors tart the engine.X
Turn the light switch to X .
The green X indicator lamp in the instru-
ment cluste rl ig hts up.
Rea rf og lampThe rea rf og lamp improves visibility of your
vehicl ef or the traffi cb ehin dint he event of thick
fog .P leas et ake note of the country-specific
regulations for the us eofr ea rf og lamps.X
To switc ho nt he rear fo gl amp: tur nt he
SmartKe yint he ignition lock to position H or
s tart
the engine.X
Turn the light switch to X or X .X
Press the ^ button.
The yellow ^ indicator lamp in the instru-
ment cluste rl ig hts up.X
To switc ho ff the rear fo gl amp: press the
^ button.
The yellow ^ indicator lamp in the instru-
ment cluste rg oe so ut .
i When the rea rf og lamp is switched on, the
cente rb rake lamp in the tai ll am ps wi tches off
du etoal egal requirement.
Parkin gl amps
! If the battery charge is ver yl ow ,t he parking
lamps or standing lamps ar ea ut omatically
switched off to enabl et he next engine start.
Alway sp ar ky ou rv ehicl es af el ya nd in aw el ll it area ,ina ccordance with the relevant legal
stipulations. Avoi du si ng the ` parking
lamps ove rap er io dofs ev eral hours. If pos-
sible, switch on the right-hand d or left-
hand c standing lamps. X
To switc ho n: tur nt he light switch to ` .
Th eg reen ` indicator lamp in the instru-
ment cluste rl ig hts up.
Standin gl ampsSwitching on the standing lamps ensures the
corresponding side of the vehicl eisi llumin ated.X
To switc ho nt he standin gl amps: the
SmartKe yisn ot in the ignition lock or it is in
position Z in the ignition lock. X
Turn the light switch to c (left-hand side of
the vehi cle) or d (
right-hand side of the
vehicle).
Combination switch
X
To indicate briefly: press the combination
switch briefl ytot he pressure point in the
directio nofa rr ow D or

Interior lighting control
General notes In order to preven tt he vehicle's battery from
discharging ,t he interio rl ighting function sa re
automatically deactivated after som et im e
except when th eS ma rtKey is in position H in
th ei gnition lock.
The color and brightness for th ea mbien tl ighting
may be set via th em ultimedia system; see th e
separat eo perating instructions.
Automati ci nterior lighting controlX
To switch on: set th es witch to center posi-
tion

X
Insert the new bul bi nto bul bh older D .X
Insert bul bh older D and turn it clockwise.X
Press on housing cover C and turn it to the
right. X
Replace the cover in the front wheel housing
( Y
page 105).
High-beam headlamps/daytime run-
ning lamps/parking lamps and stand-
ing lamps (halogen headlamps) X
Switch off the lights. X
Open the hood. X
Turn housing cover C counter-clockwise and
remove it. X
Turn bul bh older D counter-clockwise and
pul lo ut.X
Insert the new bul ba nd engage it to the stop.X
Press on housing cover C and turn it to the
right.
Turn signals (halogen headlamps)
X
Switch off the lights. X
Open the hood. X
Turn bul bh older C counter-clockwise and
pul lo ut. X
Turn the bul bc ounter-clockwise and pul li t
out of bul bh older C .X
Insert the new bul bi nto bul bh older C .X
Insert bul bh older C and turn it clockwise
until it engages.
Replacing rear bulbs
Openin ga nd closing the side trim pan-
els
View of right-hand side trim panel
You must open the side trim panel in the trunk
before you can replace the bulbs in the tail
lamps. X
To open: release right or left side trim
panel C at the top and fold it down in the
direction of the arrow. X
To close: insert side panel C .
Tail lamps X
Switch off the lights. X
Open the trunk. X
Open the side trim panel ( Y
page 106).106
Replacing bulbs
Lights and windshield wipers

Replacing the wiper blades
Important safety notes
G WARNING
If the windshield wiper sb egin to move while
yo ua re changing the wiper blades, yo uc ould
be trapped by the wiper arm .T here is ar is ko f
injury.
Alway ss witch off the windshield wiper sa nd
ignition before changing the wiper blades.
! To avoid damaging the wiper blades, make
sure that yo ut ouch only the wiper arm of the
wiper.
! Neve ro pe nt he hoo difaw in dshield wiper
arm ha sb ee nf olded away from the wind-
shield.
Neve rf ol daw in dshield wiper arm withou ta
wiper blad eb ac ko nto the windshield.
Hol dt he windshield wiper arm firmly when
yo uc hange the wiper blade. If yo ur elease the
windshield wiper arm withou taw ip er blade
and it falls onto the windshield ,t he windshield
may be damaged by the force of the impact.
Mercedes-Benz recommend st hat yo uh av e
the wiper blades changed at aq uali fied spe-
cialist workshop.
Changin gt he windshield wiper blades
Removin gt he wiper bladesX
Vehicles without KEYLESS-GO or KEY-
LESS-G Os tart function: remove the Smart-
Key from the ignition lock. X
Vehicles with KEYLESS-GO or KEYLESS-
GO start function: switch off the engine.X
Fol dt he wiper arm away from the windshield. X
Hol dontot he wiper arm with one hand. With
the othe rh an d, turn wiper blad eind ir ection
of arrow C away from the wiper arm as far as
it will go. X
Slide catch D in the direction of arrow