2018 MERCEDES-BENZ CLA warning

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

Correct driver's seat position
G WARNING
You coul dl ose control of your vehicle if you do
th ef ollowin gw hile driving:R
adjust th ed river' ss eat ,h ead restraint,
steering wheel or mirrors R
fasten th es eat belt
Ther eisar is kofana ccident.
Adjust th ed river' ss eat ,h ead restraint ,s te er-
ing wheel and mirror and fasten your seat belt
before starting th ee ng ine.
Observ et he followin gw hen adjusting steering
wheel C ,s eat belt D and driver' ss eat

motion. This could cause you to lose control of
the vehicle. There is ar isk of an accident.
Always make sure that the driver' ss eat is
engage db efore starting the vehicle.
G WARNING
You could lose control of you rv ehicl eify ou do
the following while driving: R
adjust the driver' ss eat, head restraint,
steering whee lorm irrorsR
fasten the seat belt
There is ar isk of an accident.
Adjust the driver' ss eat, head restraint, steer-
ing whee la nd mirror and fasten you rs eat belt
before starting the engine.
G WARNING
If you adjust the seat height carelessly ,y ou or
other vehicl eo ccupants could be trappe da nd
thereby injured. Children in particular could
accidentally press the electrica ls eat adjust-
ment buttons and become trapped. There is a
risk of injury.
Whil em oving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem.
! To avoi dd amage to the seats and the seat
heating, observe the following information: R
keep liquid sf rom spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible. R
if the seat covers are damp or wet, do not
switch on the seat heating. The seat heat-
ing should als on ot be used to dry the seats.R
clean the seat covers as recommended;
see the "Interior care" section. R
do not transport heavy loads on the seats.
Do not place sharp objects on the seat
cushions, e.g. knives, nail sort ools. The
seats should only be occupied by passen-
gers, if possible. R
when the seat heating is in operation, do
not cover the seats with insulating materi-
als ,e .g. blankets, coats, bags ,s eat covers,
child seats or booster seats. ! Make sure that there are no objects in the
footwel lu nder or behind the seats when mov-
ing the seats back. There is ar isk that the
seats and/or the objects could be damaged.
i Further related subjects: R
cargo compartment enlargement (folding
down the rear seats) ( Y
page 240)
Adjusting the seats manually
Vehicles without the seating comfort
package
Seat fore-and-aft adjustment: X
Lift handle C and slid et he seat forwards or
backwards. X
Release lever C again.
Make sure that you hear the seat engage in
position.
Backrest angle: X
Relieve the pressure on the backrest. X
Turn handwheel

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

Mirrors
Rear-view mirror X
Anti-glare mode: flick anti-glare lever C for-
wards or back.
Exterior mirrors
Adjusting the exterior mirrors
G WARNING
You coul dl ose control of you rv ehicl eify ou do
the following while driving: R
adjust the driver's seat, hea dr estraint,
steering whee lorm irrorsR
fasten the seat belt
There is ar isk of an accident.
Adjust the driver's seat, hea dr estraint, steer-
ing whee la nd mirror and fasten you rs eat belt
before starting the engine.
G WARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you coul dm isjudge the dis-
tance from road users traveling behind, e.g.
when changing lane .T here is ar isk of an acci-
dent.
For this reason, alway sm ake sure of the
actua ld istance from the road users traveling
behind by glancing over you rs houlder. X
Turn the SmartKey to position G or H in the
ignitio nl ock ( Y
pag e1 22).X
Exterior mirror on the front-passenger side:
press button D .
Exterior mirror on the driver's side :p ress but-
ton C .
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected exterior
mirror using button

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

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

i If you activate the residual heat function at
high temperatures, only the ventilation wil lb e
activated. The blower runs at mediu ms peed.
i You cannot use the ventilation to cool the
vehicle interior to at emperature lowe rt han
the outsid et emperature.
Activating/deactivating X
Turn the SmartKey to position Z in the igni-
tion lock or remove it ( Y
page 122).X
Press the K button.
The indicator lamp in the K button lights
up or goes out.
The indicator lamp in the button indicates that
the respective function is activated.
i Residua lh eat is deactivated automatically:R
after approximately 30 minutes R
when the ignition is switched on R
if the battery voltage drops
Air vents
Important safety notes
G WARNING
Very hot or very cold air can flow from the air
vents. This could resul tinb urns or frostbite in
the immediate vicinity of the air vents. There
is ar isk of injury.
Make sure that all vehicle occupants always
maintain as ufficient distance to the air out-
lets. If necessary ,r edirect 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
C
Side window defroster vent D
Side air vent X
To open as ide air vent: turn the adjuster in
side air vent D to the left. X
To close as ide air vent: turn the adjuster in
side air vent D clockwise as far as it wil lg o.
i The center and rear air vents are adjusted in
the same way.120
Ai rv ents
Climate control