engine MERCEDES-BENZ CLS-Class 2014 W218 Service Manual

Problems with the seat ventilation
Problem Possible causes/consequences and
000B Solutions
The seat ventilation has
switched off
prematurely or cannot
be switched on. The on-board voltage is too low because too many electrical
consumers 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 ventilation 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 arisk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before startingt he engine.G
WARNING
Children could injure themselves if they
adjust the steering wheel. There is arisk 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
electrically
001A
To adjust the steering wheel height
0010 To adjust the steering wheel position
(fore-and-aft adjustment)
i Further related subjects:
R EASY-ENTRY/EXIT feature
(Y page 108)
R Storing settings (Y page 112)106
Steering wheelSeats, steering wheela
nd mirrors

Position of the steering wheel for
driving
The steering wheel is moved to the last
selected position when:
R the driver's door is closed
R with KEYLESS-GO: you press the Start/
Stop button once on vehicles with
KEYLESS-GO
or
R with the SmartKey: you insert the
SmartKey into the ignition lock.
When you close the driver's door with the
ignition switched on, the steering wheel is
also automatically moved to the previously
set position.
The last position of the steering wheel is
stored when you switch off the ignition or
when you store the settingw ith the memory
function (Y page 112).
Crash-responsive EASY-EXIT feature If the crash-responsiv
eEASY-EXI Tfeature is
triggere dinana ccident,the steerin gcolumn
will mov eupwards when the driver's door is
opened. This occurs irrespective of the
position of the SmartKey in the ignition lock.
This makes it easier to exit the vehicle and
rescue the occupants.
The crash-responsiv eEASY-EXI Tfeature is
only operational if the EASY-EXIT/ENTRY
feature is activated in the on-board computer.
(Y page 233) Mirrors
Exterior mirrors
Adjusting th eexterior mirrors G
WARNING
You could lose control of your vehicle if you
do the followin gwhile driving:
R adjust the driver's seat ,head restraint,
steerin gwheel or mirrors
R fasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, head restraint,
steerin gwheel and mirror and fasten your
seat 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 could misjudge the
distanc efrom road users travelin gbehind,
e.g. when changin glane. There is arisk of an
accident.
For this reason, alway smake sure of the
actual distanc efrom the road users traveling
behind by glancin gover your shoulder. X
Turn the SmartKey to position 1or 2in the
ignition (Y page 147).
X Press button 001Afor the left-hand exterior
mirror or button 0010for the right-hand
exterior mirror.
The indicator lamp in the corresponding
button lights up in red. Mirrors
109Seats, steering wheel and mirrors Z

The indicator lamp goes out again after
some time. You can adjust the selected
mirror using adjustmen
tbutton 0024as long
as the indicator lamp is lit.
X Press adjustmen tbutton 0024up, down ,or
to th eleft or right until you have adjusted
th ee xter iorm irror to th ecorrect position.
You should have agood overview of traffic
conditions.
The convex exterio rmirrors provide alarger
field of vision.
After the engine has been started, the
exterior mirrors are automatically heate dif
the rear window defroster is switched on and
the outside temperature is low. Heating takes
am aximum of 10 minutes.
i The exterior mirrors can also be heated
manually by switching on the rear window
defroster.
Folding th eexterior mirror sinorout
electrically X
Turn the SmartKey to position 1or 2in the
ignition (Y page 147).
X Briefly press button 001A.
Bot hexterior mirrors fold in or out.
i Make sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
i If you are drivin gfaster than 30 mp/h
(47 km/h), you can no longer fold in the
exterior mirrors. Setting th
eexterior mirrors If the battery has been disconnected or
completely discharged, the exterior mirrors
must be reset
.The exterior mirrors will
otherwise not fold in when you select the
"Fold in mirrors when locking" function in the
on-board computer (Y page 233)
X Turn the SmartKey to position 1in the
ignition lock (Y page 147).
X Briefly press button 001A.
Folding the exterior mirrors in or out
automatically If the "Fold in mirrors when locking" function
is activated in the on-board computer
(Y
page 233):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the
outside.
R the exterior mirrors fold out again
automatically as soon as you unlock the
vehicle and then open the driver's or front-
passenger door.
i If the exterior mirrors have been folded in
manually,t hey do not fold out.
Exterior mirror pushed out of position If an exterior mirror has been pushed out of
position, proceed as follows:
X
Vehicles without electrically folding
exterior mirrors: move the exterior mirror
into the correct position manually.
X Vehicles with electrically folding
exterior mirrors: press and hold mirror-
folding button 001Auntil you hear aclick and
then the mirrors engage in position
(Y page 110).
The mirror housing is engaged again and
you can adjust the exterior mirrors as usual
(Y page 109). 110
MirrorsSeats, steering wheela
nd mirrors

The exterior lighting (except the parking/
standin
glamps) switches off automatically if
you:
R remove the SmartKey from the ignition lock
R open the driver's door with the SmartKey
in position 0.
Automatic headlam pmode G
WARNING
When the light switch is set to 000D,the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is arisk of an
accident.
In such situations, turn the light switch to
001D.
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lighting at all times. 00010018
Left-hand standin glamps
0002000A Right-hand standin glamps
00030008 Parking lamps, license plate and
instrument cluster lighting
0005000D Automatic headlamp mode,
controlled by the light sensor
0019001D Low-beam/high-beam headlamps 000D
is the favored light switch setting. The
light setting is automatically selected
accordin gtothe brightness of the ambient
light (exception: poor visibility due to weather
conditions such as fog, snow or spray):
R SmartKey in position 1in the ignition lock:
the parking lamps are switched on or off
automatically depending on the brightness
of the ambient light.
R With the engine running: if you have
activated the daytime runnin glamps
function via the on-board computer ,the
daytime runnin glamps or the low-beam
headlamps and parking lamps are switched
on or off automatically depending on the
brightness of the ambient light.
X To switch on automatic headlamp
mode: turn the light switch to 000D.
Only for Canada:
The daytime runnin glamps improve the
visibility of your vehicle during the day. The
daytime runnin glamps function is required by
law in Canada. It cannot therefore be
deactivated.
When the engine is runnin gand the vehicle is
stationary: if you move the selector lever from
ad rive position to P,the daytime running
lamps/low-beam headlamps go out after
three minutes.
When the engine is running, the vehicle is
stationary and in high ambient light: if you
turn the light switch to 0008,the daytime
runnin glamps and parking lamps switch on.
If the engine is runnin gand you turn the light
switch to 001D,the manual settings take
precedenc eover the daytime runnin glamps.
USA only:
The daytime runnin glamps improve the
visibility of your vehicle during the day. To do
this, the daytime runnin glamps function must
be switched on using the on-board computer
(Y page 230).
If the engine is runnin gand you turn the light
switch to 0008or001D,t he manual settings Exterior lighting
117Lights and windshield wipers Z

take precedence ove
rthe daytime running
lamps.
Low-beam headlamps G
WARNING
When the ligh tswitc hiss et to 000D,t helow-
beam headlamp smay not be switche don
automatically if there is fog, snow or other
causes of poor visibility due to th eweather
conditions such as spray. Ther eisarisk of an
accident.
In such situations, tur nthe light switch to
001D. 00010018
Left-hand standing lamps
0002000A Right-hand standing lamps
00030008 Parking lamps, license plate and
instrumentc luster lighting
0005000D Automatic headlamp mode,
controlled by the light sensor
0019001D Low-beam/high-beam headlamps
Even if the light sensor does not detect that
it is dark ,the parking lamps and low-beam
headlamps switc honwhen the ignition is
switched on and the light switc hisset to the
001D position. This is aparticularly useful
function in the even tofrain and fog.
X To switch on th elow-beam headlamps:
tur nthe SmartKey in the ignition lock to
position 2or start the engine.
X Turn the light switc hto001D.
The green 001Dindicator lamp in the
instrumen tcluster light sup. Parking lamps
!
If the battery has been excessively
discharged, the parking lamps or standing
lamps are automatically switched off to
enable the nex tengine start. Alway spark
your vehicl esafelya nd sufficiently lit
according to lega lstandards .Avoid the
continuou suse of the 0008parking lamps
for severa lhours .Ifpossible, switch on the
000A right or the 0018left standin glamp. 00010018
Left-hand standin glamps
0002000A Right-hand standin glamps
00030008 Parking lamps, license plate and
instrument cluster lighting
0005000D Automatic headlamp mode,
controlled by the light sensor
0019001D Low-beam/high-beam headlamps
X To switch on: turn the light switch to
0008.
The green 0008indicator lamp in the
instrument cluster lights up. 118
Exterior lightingLights and windshiel
dwipers

Standing lamps
00010018
Left-hand standing lamps
0002000A Right-hand standing lamps
00030008 Parking lamps, license plate and
instrumen tcluster lighting
0005000D Automatic headlamp mode,
controlled by the light sensor
0019001D Low-beam/high-beam headlamps
Switchin gonthe standin glamps ensure sthe
corresponding side of th evehicle is
illuminated.
X To switch on th estanding lamps: the
SmartKey is no tintheignition loc koritis
in position 0.
X Turn th elight switch to 0018(left-han dside
of th evehicle )or000A (right-hand side of
th ev ehicle). Combination switch
Turn signal 001A
High-beam headlamps
0010 Turn signal, right 0024
High-beam flasher
0021 Turn signal, left
X To indicat ebriefly: pressthe combination
switch briefly to th epressure poin tinthe
direction of arrow 0010or0021.
The corresponding turn signal flashes three
times.
X To indicate: press the combination switch
beyond the pressure point in the direction
of arrow 0010or0021.
High-beam headlamps 001A
High-beam headlamps
0010 Turn signal, right
0024 High-beam flasher
0021 Turn signal, left
X To switch on the high-beam headlamps:
turn the SmartKey in the ignition lock to
position 2or start the engine.
X Turn the light switch to 001Dor000D.
X Press the combination switch beyond the
pressure point in the direction of
arrow 001A.
In the 000Dposition, the high-beam
headlamps are only switched on when it is
dark and the engine is running. Exterior lighting
119Lights and windshield wipers Z

The blue
0015indicator lamp in the
instrument cluster lights up when the high-
beam headlamps are switched on.
X To switch off the high-beam
headlamps: move the combination switch
back to its normal position.
The blue 0015indicator lamp in the
instrument cluster goes out.
i Vehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active,
it controls activation of the high-beam
headlamps (Y page 121).
High-beam flasher 001A
High-beam headlamps
0010 Turn signal, right
0024 High-beam flasher
0021 Turn signal, left
X To switch on: turn the SmartKey in the
ignition lock to position 1or 2,ors tart the
engine.
X Pull the combination switch in the direction
of arrow 0024. Hazard warning lamps
X
To switch on the hazard warning lamps:
press button 001A.
All turn signals flash. If you now switch on
at urn 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 001A.
The hazard warning lamps automatically
switch on if:
R an air bag is deployed
R the vehicle decelerates rapidly from a
speed of more than 45 mph (70 km/h) and
comes to astandstill
The hazard warning lamps switch off
automatically if the vehicle reaches aspeed
of over 6mph (10 km/h) again after afull
brake application.
i The hazard warning lamps still operate if
the ignition is switched off. Headlam
pcleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated five times (Y page 125)while the
light sare on and the engin eisrunning. When
you switc hoff the ignition, the automatic
headlamp cleaning syste misreset and
counting is resumed from 0. 120
Exterior lightingLights and windshield wipers

Problems with the windshield wipers
Problem Possible causes/consequences and
000B Solutions
The windshield wipers
are jammed. Leaves or snow, for example, may be obstructing the windshield
wiper movement.T
he wiper motor has been deactivated.
X For safety reasons, you should remove the SmartKey from the
ignition lock.
or
X Switch off the engine using the Start/Stop button and open the
driver's door.
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 aqualified specialist
workshop. 128
Windshield wipersLights and windshield wipers

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please not ethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related system sand functions.
i Read the information on qualified
specialist workshops: (Y page 26).Overview of climat
econtrol systems Important safet
ynotes
Observ ethe settings recommende donthe
following pages. The windows could
otherwise fog up.
To preven tthe windows from fogging up:
R switch off climate control only briefly
R switch on air-recirculation mode only
briefly
R switch on the cooling with air
dehumidification function
R switch on the defrost windshield function
briefly, if required
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances out of the air.
Climate control can only be operated when
the engine is running. Optimum operation is
only achieved with the side windows and roof
closed.
The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 141).
i Ventilate the vehicle for abrief period
during warm weather, e.g. using the
convenience opening feature (Y page 89).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly. i
The integrated filter filters out most
particles of dust and soot and completely
filters out pollen. It also reduces gaseous
pollutantsa nd odors.Aclogged filter
reduces the amoun tofair supplied to the
vehicle interior .For this reason, you should
always observe the interval for replacing
the filter, which is specified in the
Maintenance Booklet .Asitdepends on
environmental conditions, e.g. heavy air
pollution, the interval may be shorter than
stated in the Maintenance Booklet. 130
Overview of climatec
ontrol systemsClimatecontrol

indicator lamp above the
0010button goes
out.
R Vehicles with COMAN DMultimedia-
System: if you change the settings of the
climate control system, the climate status
display appears for approximately three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions .You will
see the current settings of the various
climate control functions.
ECO start/stop function During automatic engine switch-off, the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y page 152). Overview of climate control systems
133Climate control