warning light MERCEDES-BENZ CLS 2014 Service Manual

Problems with the steering wheel heating
ProblemPossible causes/consequences andSolutions
If the steering wheel
heating indicator lamp
is flashing, the steering
wheel heating has
switched off
automatically.
The on-board voltage is too low because too many electrical
consumers are switched on.
XSwitch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting.
Once the battery is sufficiently charged, the steering wheel
heating will switch back on automatically.
EASY-ENTRY/EXIT feature
Important safety notes
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants–particularly children–could
become trapped. There isarisk of injury.
While the EASY-ENTRY/EXIT feature is
making adjustments, make sure that no one
has any body parts in the sweep of the
steering wheel.
If somebody becomes trapped:
Rpress one of the memory function position
buttons, or
Rmove the switch for steering wheel
adjustmentinthe opposite direction to that
in which the steering wheel is moving.
The adjustment process is stopped.
GWARNING
If children activate the EASY-ENTRY/EXIT
feature, they can become trapped,
particularly when unattended. There isarisk
of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose
control of the vehicle. There isarisk of an
accident.
Always wait until the adjustment process is
complete before driving off.
The EASY-ENTRY/EXITfeature makes getting
in and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature in the on-board
computer (Ypage 233).
Position of the steering wheel when the
EASY-ENTRY/EXIT featureisactive
The steeringwheel swings upwards when
you:
Rremove the SmartKey from the ignition lock
Rwith KEYLESS-GO:open the driver's door;
KEYLESS-GO must be in position1in the
ignition lock
Rwith the SmartKey:open the driver's
door; the SmartKey must be in position0
or1in the ignition lock (Ypage 147)
iThe steeringwheel only moves upwards if
it has not already reached the upper end
stop.
108Steering wheel
Seats, steering wheel and mirrors

Position of the steering wheel for
driving
The steering wheel is moved to the last
selected position when:
Rthe driver's door is closed
Rwith KEYLESS-GO:you press the Start/
Stop button once on vehicles with
KEYLESS-GO
or
Rwith 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 settingwith the memory
function (Ypage 112).
Crash-responsive EASY-EXIT feature
If the crash-responsiveEASY-EXITfeature is
triggeredinanaccident,the steeringcolumn
will moveupwards 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-responsiveEASY-EXITfeature is
only operational if the EASY-EXIT/ENTRY
feature is activated in the on-board computer.
(Ypage 233)
Mirrors
Exterior mirrors
Adjusting theexterior mirrors
GWARNING
You could lose control of your vehicle if you
do the followingwhile driving:
Radjust the driver's seat,head restraint,
steeringwheel or mirrors
Rfasten the seat belt
There isarisk of an accident.
Adjust the driver's seat, head restraint,
steeringwheel and mirror and fasten your
seat belt before starting the engine.
GWARNING
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
distancefrom road users travelingbehind,
e.g. when changinglane. There isarisk of an
accident.
For this reason, alwaysmake sure of the
actual distancefrom the road users traveling
behind by glancingover your shoulder.
XTurn the SmartKey to position1or2in the
ignition (Ypage 147).
XPress buttonfor the left-hand exterior
mirror or buttonfor the right-hand
exterior mirror.
The indicator lamp in the corresponding
button lights up in red.
Mirrors109
Seats, steering wheel and mirrors
Z

Useful information
iThis 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 notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Exterior lighting
Generalnotes
For reasonsofsafety, Mercedes-Benz
recommends that you drive with the lights
switched on even during the daytime.
Therefore, your vehicle is equipped with
special daytime running lamps. In some
countries, operation of the headlamps varies
due to legal requirements and self-imposed
obligations.
If you wish to drive during the daytime without
lights, switchoff the daytime running lamps
function in the on-board computer
(Ypage 230).
Driving abroad
Symmetrical low-beam headlamps
Switchthe headlamps to symmetrical low
beam in countries in which traffic drives on
the opposite side of the road from the country
where the vehicle is registered. This prevents
glare to oncoming traffic. When using
symmetrical lights, the edge of the road is not
lit as widely and as far ahead as normal.
Have the headlamps converted ataqualified
specialist workshop as close to the border as
possible before drivinginthesecountries.
Asymmetrical low beam
Have the headlamps converted back to
asymmetrical low-beam headlamps at a
qualified specialist workshop as soon as
possible after crossing the border again.
Setting the exterior lighting
Setting options
Exterior lightingcan be set using:
Rthe light switch
Rthe combination switch(Ypage 119)
Rthe on-board computer (Ypage 230)
Light switch
Operation

Left-handstanding lamps
\nRight-hand standing lamps
Parkinglamps, licenseplate and
instrumentclusterlighting
\rAutomatic headlamp mode,
controlled by the light sensor
Low-beam/high-beam headlamps
If you hearawarningtonewhen you leave the
vehicle, the lightsmay still be switched on.
XTurn the light switchto\r.
116Exterior lighting
Light sa nd windshield wipers

The exterior lighting (except the parking/
standinglamps) switches off automatically if
you:
Rremove the SmartKey from the ignition lock
Ropen the driver's door with the SmartKey
in position0.
Automatic headlampmode
GWARNING
When the light switch is set to\r,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 isarisk of an
accident.
In such situations, turn the light switch to
.
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lighting at all times.

Left-hand standinglamps
\nRight-hand standinglamps
Parking lamps, license plate and
instrument cluster lighting
\rAutomatic headlamp mode,
controlled by the light sensor
Low-beam/high-beam headlamps
\ris the favored light switch setting. The
light setting is automatically selected
accordingtothe brightness of the ambient
light (exception: poor visibility due to weather
conditions such as fog, snow or spray):
RSmartKey in position1in the ignition lock:
the parking lamps are switched on or off
automatically depending on the brightness
of the ambient light.
RWith the engine running: if you have
activated the daytime runninglamps
function via the on-board computer,the
daytime runninglamps or the low-beam
headlamps and parking lamps are switched
on or off automatically depending on the
brightness of the ambient light.
XTo switch on automatic headlamp
mode:turn the light switch to\r.
Only for Canada:
The daytime runninglamps improve the
visibility of your vehicle during the day. The
daytime runninglamps function is required by
law in Canada. It cannot therefore be
deactivated.
When the engine is runningand the vehicle is
stationary: if you move the selector lever from
adrive position toP,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,the daytime
runninglamps and parking lamps switch on.
If the engine is runningand you turn the light
switch to,the manual settings take
precedenceover the daytime runninglamps.
USA only:
The daytime runninglamps improve the
visibility of your vehicle during the day. To do
this, the daytime runninglamps function must
be switched on using the on-board computer
(Ypage 230).
If the engine is runningand you turn the light
switch toor,the manual settings
Exterior lighting117
Lights and windshield wipers
Z

take precedence overthe daytime running
lamps.
Low-beam headlamps
GWARNING
When the lightswitchisset to\r,thelow-
beam headlampsmay not be switchedon
automatically if there is fog, snow or other
causes of poor visibility due to theweather
conditions such as spray. Thereisarisk of an
accident.
In such situations, turnthe light switch to
.

Left-hand standing lamps
\nRight-hand standing lamps
Parking lamps, license plate and
instrumentcluster lighting
\rAutomatic headlamp mode,
controlled by the light sensor
Low-beam/high-beam headlamps
Even if the light sensor does not detect that
it is dark,the parking lamps and low-beam
headlamps switchonwhen the ignition is
switched on and the light switchisset to the
position. This isaparticularly useful
function in the eventofrain and fog.
XTo switch on thelow-beam headlamps:
turnthe SmartKey in the ignition lock to
position2or start the engine.
XTurn the light switchto.
The greenindicator lamp in the
instrumentcluster lightsup.
Parking lamps
!If the battery has been excessively
discharged, the parking lamps or standing
lamps are automatically switched off to
enable the nextengine start. Alwayspark
your vehiclesafelyand sufficiently lit
according to legalstandards.Avoid the
continuoususe of theparking lamps
for severalhours.Ifpossible, switch on the
\nright or theleft standinglamp.

Left-hand standinglamps
\nRight-hand standinglamps
Parking lamps, license plate and
instrument cluster lighting
\rAutomatic headlamp mode,
controlled by the light sensor
Low-beam/high-beam headlamps
XTo switch on:turn the light switch to
.
The greenindicator lamp in the
instrument cluster lights up.
118Exterior lighting
Lights and windshiel dw ipers

The blueindicator lamp in the
instrument cluster lights up when the high-
beam headlamps are switched on.
XTo switch off the high-beam
headlamps:move the combination switch
back to its normal position.
The blueindicator lamp in the
instrument cluster goes out.
iVehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active,
it controls activation of the high-beam
headlamps (Ypage 121).
High-beam flasher
High-beam headlamps
Turn signal, right
$High-beam flasher
!Turn signal, left
XTo switch on:turn the SmartKey in the
ignition lock to position1or2,orstart the
engine.
XPull the combination switch in the direction
of arrow$.
Hazard warning lamps
XTo switch on the hazard warning lamps:
press button.
All turn signals flash. If you now switch on
aturn signal using the combination switch,
only the turn signal lamp on the
corresponding side of the vehicle will flash.
XTo switch off the hazard warning
lamps:press button.
The hazard warning lamps automatically
switch on if:
Ran air bag is deployed
Rthe vehicle decelerates rapidly from a
speed of more than 45 mph (70 km/h) and
comes toastandstill
The hazard warning lamps switch off
automatically if the vehicle reachesaspeed
of over6mph (10 km/h) again afterafull
brake application.
iThe hazard warning lamps still operate if
the ignition is switched off.
Headlampcleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated five times (Ypage 125)while the
lightsare on and the engineisrunning. When
you switchoff the ignition, the automatic
headlamp cleaning systemisreset and
counting is resumed from 0.
120Exterior lighting
Lights and windshield wipers

Cornering lightfunction
The cornering light function improves the
illumination of the road overawideanglein
the direction you are turning, enabling better
visibility in tight bends, for example. It can
only be activated whenthe low-beam
headlamps are switched on.
Active:
Rif you are driving at speeds below 25 mph
(40 km/h)and switch on the turn signal or
turn the steering wheel
Rif you are driving at speeds between
25 mph(40km/h)and 45 mph(70km/h)
and turn the steering wheel
Not active:if you are driving at speeds above
25 mph (40 km/h) or switch off the turn
signalorturn the steering wheel to the
straight-ahead position.
The cornering lamp may remain lit forashort
time, but is automatically switched off after
no more than three minutes.
Active light function
The active light function isasystem that
moves the headlamps according to the
steering movements of the front wheels.In
this way, relevant areasremain illuminated
while driving. Thisallowsyou to identify
pedestrians, cyclists and animals.
Active:whenthe lights are switched on.
Adaptive Highbeam Assist
Important safety notes
GWARNING
Adaptive Highbeam Assist does not recognize
road users:
Rwho have no lights, e.g. pedestrians
Rwho have poor lighting, e.g. cyclists
Rwhose lighting is blocked, e.g. byabarrier
In very rare cases, Adaptive Highbeam Assist
may fail too recognize other road users that
have lights, or may recognize them too late.
In this or similar situations, the automatic
high-beam headlamps will not be deactivated
or activated regardless. There isarisk of an
accident.
Always carefully observe the traffic conditions
and switch off the high-beam headlamps in
good time.
Exterior lighting121
Lights and windshield wipers
Z

The interior lighting automatically switches
on if you:
Runlock the vehicle
Ropenadoor
Rremove the SmartKey from the ignition lock
The interior light is activated forashort while
when the SmartKey is removed from the
ignition lock. You can activatethis delayed
switch-off using the on-board computer
(Ypage 232).
Manualinterior lighting control
Frontoverhead control panel
To switch the rear interior lighting
on/off.
To switch the automatic interior
lighting control on/off
$To switch the right-hand reading
lamp on/off
!\rTo switch the frontinterior lighting
on/off
To switch the left-hand reading lamp
on/off
XTo switch the front interior lighting on/
off:press the\rbutton.
XTo switch the rear interior lighting on/
off:press thebutton.
XTo switch the reading lampson/off:
press thebutton.
Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
XTo switch off the crash-responsive
emergency lighting:press the hazard
warning lamp button.
or
XLock and then unlock the vehicle using the
SmartKey.
Replacing bulbs
Important safety notes
Xenon bulbs
GDANGER
Xenon bulbs carryahigh voltage. You can get
an electric shock if you remove the cover of
the Xenon bulb and touch the electrical
contacts. There isarisk of fatal injury.
Never touch the parts or the electrical
contacts of the Xenon bulb. Always have work
on the Xenon bulbs carried out ataqualified
specialist workshop.
Bulbs and lamps are an importantaspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
LED lamps
You can neither replace Xenon bulbsnor LED
bulbs. Have LED bulbschanged ataqualified
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.
Other bulbs
GWARNING
Bulbs, lamps and connectors can get very hot
when operating. If you changeabulb, you
124Replacing bulbs
Lights and windshield wipers

thathas collectedonthewindshield can
scratch theglass if wipingtakes placewhen
thewindshield is dry.
If it is necessary to switch on thewindshield
wipersindry weather conditions, always
use washerfluid when operating the
windshield wipers.
!If the windshield wipers leave smearson
the windshield after the vehicle has been
washed in an automatic car wash, wax or
other residues may be the reason for this.
Clean the windshield using washer fluid
after washingthe vehicle in an automatic
car wash.
!Intermittentwiping with rain sensor: due
to optical influences and the windshield
becomingdirtyindry weatherconditions,
the windshield wipers may be activated
inadvertently. This could then damage the
windshield wiper blades or scratchthe
windshield.
For this reason, you should always switch
off the windshield wipers in dry weather.
Combination switch

Windshield wiper off
Intermittent wipe, low (rain sensor
set to low sensitivity)
Intermittent wipe, high (rain sensor
set to high sensitivity)
Continuous wipe, slow
Continuous wipe, fast
%Single wipe/
To wipe the
windshield using washer fluid
XSwitch on the ignition.
XTurn the combination switch to the
corresponding position.
In theorposition, the appropriate
wiping frequency is set automatically
according to the intensity of the rain. In
theposition, the rain sensor is more
sensitive than in theposition, causing
the windshield wipers to wipe more
frequently.
If the wiper blades are worn, the windshield
will no longer be wiped properly. This could
prevent you from observing the traffic
conditions. Replace the wiper blades twice a
year, ideallyinspring and fall.
Replacing the wiper blades
Important safety notes
GWARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could
be trapped by the wiper arm. There isarisk
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 ifawindshield wiper
arm has been folded away from the
windshield.
Never foldawindshield wiper arm without
awiper blade back ontothe windshield.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the windshield wiper arm withoutawiper
blade and it falls ontothe windshield, the
windshield may be damaged by the force of
the impact.
Mercedes-Benz recommends that you have
the wiper blades changed ataqualified
specialist workshop.
126Windshieldwipers
Light sa nd windshield wipers

XTurn the SmartKey to position0in the
ignition lock or remove it (Ypage 147).
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up.
iIf the residual heat function is activated,
the windows may fog up on the inside.
iThe blower will run atalow speed
regardless of the airflow setting.
iIf you activatethe residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
XTo deactivate:press thebutton.
The indicator lamp in thebutton goes
out.
Residualheat is deactivated automatically:
Rafter approximately 30 minutes
Rwhen the ignition is switched on
Rif the battery voltage drops
Setting the air vents
Important safety notes
GWARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinityofthe air vents. There
isarisk of injury.
Make sure that all vehicle occupantsalways
maintainasufficient distancetothe air
outlets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air ventsinto the vehicle interior,
please observe the following notes:
Rkeep the air inlet between the windshield
and the hood free of blockages, such as ice,
snow or leaves.
Rnever cover the air ventsorair intakegrilles
in the vehicle interior.
Setting the center air vents
Center air vent,left
Center air vent,right
$Center vent thumbwheel, right
!Center vent thumbwheel, left
XTo open/close:turn thumbwheels$
and!up or down.
Setting the side air vents
Defroster vent
Side air vent
$Control for side air vent
XTo open/close:turn thumbwheel$up or
down.
Setting the glove box air vent
!Close the air vent when heating the
vehicle.
At high outside temperatures, open the air
vent and activatethe "cooling with air
142Setting the air vents
Climate control