heating MERCEDES-BENZ CLS COUPE 2012 Owner's Manual

the vehicl
ealigh t. Choose your parking spot
accordingly.
Operating the auxiliary heating is thu spro-
hibited at filling stations or when your vehicle
is being refuelled .You must therefor eswitch
off the auxiliary heating at filling stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for alonger
distance.
i Switch the auxiliary heating on regularly
once amonthf or about ten minutes.
The auxiliary heating heats the air in the
passenger compartment to the selected tem-
perature. It does not use the heat of the run-
ning engine to do this. The auxiliary heating
is operated directly using the vehicle's fuel.
For this reason, the tank content must be at
least at reserve fuel level to ensure that the
auxiliary heating functions.
The auxiliary heating/ventilation automati-
cally adjusts to changes in temperature and
weather conditions. For this reason, the aux-
iliary heating could switch from ventilation
mode to heating mode or from heating mode
to ventilation mode.
The auxiliary heating switches off automati-
cally after 50 minutes. This time limit can be
altered. To do this, visit aqualified specialist
workshop.
You cannot use the auxiliary ventilation to
cool the vehicle interior to atemperature
lower than the outside temperature.
Before switching on X
Turn the key to position 2in the ignition
lock.
X Set the temperature.
The auxiliary heating/ventilation can be acti-
vated even when climate control is set to
manual. Optimum comfor tcan be attained
when the system is set to automatic mode.
Set the temperature to 22 †. The auxiliary heating/ventilation can be acti-
vated or deactivated using the remote control
or the button on the centre console.
The on-board computer can be used to spec-
ify up to three departure times, one of which
may be preselected (Y page 225).
Switching the auxiliary heating/venti-
lation on/off using the centre console
button The colours of the indicator lamps on the but-
ton have the following meanings:
Blue Auxiliary ventilation switched on
Red Auxiliary heating switched on
Yellow Departure time preselected
(Ypage 225) Switch in the centre console
X
To switch the auxiliary heating/ventila-
tion on: press button :.
The red or blue indicator lamp in but-
ton :lights up.
X To switch the auxiliary heating/ventila-
tion off: press button :.
The red or blue indicator lamp in but-
ton :goes out.
Switching the auxiliary heating/venti-
lation on/off using the remotec ontrol Points to observe before use
Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For more information, please
contact
aqualified specialist workshop. Operating the climate control system
133Climate control Z

The remote control has
amaximum range of
approximately 300 metres. This range is
reduced by:
R sources of radio interference
R solid object sbetween the remote control
and the vehicle
R the remote control being in an unfavoura-
ble position in relation to the vehicle
R transmitting from an enclosed space
i The optimum range can be achieved if you
hold the remote control vertically, pointing
upwards when you press one of the but-
tons.
i Abattery symbol appear sinthedisplay
when th ebattery in th eremot econtro lis
low. Replac ethe remot econtro lbattery
(Y page 135).
Switching th eauxiliary heating/ventila-
tion on/off Auxiliary heating remot
econtrol
: Display
; . To check th estatus/set th edepar-
tur etime
= ^ To switch off th eauxiliary heating/
ventilation
? u To switch on th eauxiliary heating/
ventilation
A , To check th estatus/set th edepar-
tur etime X
To switch on: pressthe u button.
ON is shown in th
eremot econtro ldisplay.
X To deactivate: pressthe ^ button.
OFF is shown in th
eremot econtro ldisplay.
Checking th estatus of the auxiliary heat-
ing/ventilation
X Press the ,or. button.
The following message smayappear in the
display: Display Meaning
The auxiliary heating/
ventilatio
nisswitched
off. The auxiliary ventilation
is switched on. The num-
ber in the displays
hows
the remaining time (in
minutes) for the auxiliary
ventilation. The auxiliary heating is
switched on. The number
in the displays
hows the
remaining time (in
minutes) for the auxiliary
heating. Ad
eparture time has
been activated. The
departure time appears
in the display. Ad
eparture time has
been activated. The aux-
iliary ventilation is cur-
rently selected. The
departure time appears
in the display. Ad
eparture time has
been activated. The aux-
iliary heating is currently
selected. The departure
time appears in the dis-
play. 134
Operating thec
limatecontrol systemClimatecontrol

Setting the departuret
ime
X Press the ,or. button repeatedly
until the time to be changed appears in the
display.
X Press the uand^ buttons simulta-
neously.
The Îsymbol in the remote control dis-
play flashes.
X Press the ,or. button to set the
desired departure time.
i The longer you press the ,or.
button, the faster the time changes.
X Press the uand^ buttons simulta-
neously.
The new departure time is stored.
Activating the set departuret ime
X Press the ,or. button repeatedly
until the desired departure time appears in
the display.
X Press the ubutton.
The Ísymbol and the departure time
appearint he display.
Deactivating aset departuret ime
X Press the ,or. button.
The status of the auxiliary heating is shown
in the display.
X Press the .button.
The first departure time stored appears in
the display.
X Press the ^button.
The displaym essageOFF appears in the
display.
Replacing the remote control battery G
WARNING
Batteries contain poisonous substances.
Swallowing/ingesting batteries can result in
serious personal injury or death.
Always keep batteries away from children. If
ab attery is swallowed, seek immediate med-
ical attention. H
Environmental note Batteries contain pollutants.
It is illegaltod
ispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in an
environmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to aqualified spe-
cialist workshop or to acol-
lection point for used batter-
ies. One
6Vp in battery, type 2CR11108 is
required.
X Prise apart the side arms of battery
cover ;and pull off battery cover ;.
X Remove old battery :.
X Insert the new battery. Observe the polarity
signs on the back of the remote control
when doing so.
X Slide battery cover ;back onto the
remote control.
X Use the remote control to check the vehi-
cle's auxiliary heating functions. Operating the climate control system
135Climatecontrol Z

Problems with the auxiliary heating/ventilation
Display messages Possible causes/consequences and
M Solutions
FAIL The starter battery is not charged sufficiently or the system is
faulty.
X
Charge the starter battery.
X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at aqualified specialist
workshop. $
FAIL The signal transmission between the transmitter and the vehicle
is faulty.
X
Change your position in relation to the vehicle, moving closer if
necessary.
X Make another attempt to switch the auxiliary heating on or off
using the remote control. ©
FAIL There is not enough fuel in the fuel tank,ort
he auxiliary heating
is faulty.
X Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at aqualified specialist
workshop. Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could cause burns or frostbit eto
bare skin in the immediate vicinity of the
vents. Keep bare skin away from these air
outlets. If necessary, direct the airflow away
to ad ifferent area of the vehicle interior. In order to ensure the direct flow of fresh air
through the air ventsi
nto the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen
and the bonnet free of blockages, such as
ice, snow or leaves.
R never cover the ventsorv entilation grilles
in the vehicle interior. 136
Adjusting the air ventsClimate control

Setting the centre air vents
:
Centre air vent, left
; Centre air vent, right
= Centre vent thumbwheel, right
? Centre vent thumbwheel, left
X To open/close: turn thumbwheels =
and ?up or down. Setting the side air vents
X
To open/close: turn thumbwheel =up or
down.
i Side window demister vent :is only
open when side air vent ;is open. Setting the glove compartment air
vent
! Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu- midification" function. Otherwise, temper-
ature-sensitive items stored in the glove
compartmen
tcould be damaged. :
Air vent thumbwheel
; Air vent
When automatic climate control is activated,
the glove compartment can be ventilated, for
instance to cool its contents.T he level of air-
flow depends on the airflow and air distribu-
tion settings.
X To open/close: turn thumbwheel :
clockwise or anti-clockwise. Setting the rear-compartment air
vents
Setting the centre vents in the rear com-
partment :
Rear-compartment air vent thumbwheel
; Rear-compartment air vent,r ight Adjusting the air vents
137Climatecontrol Z

Problems with the transmission
Problem Possible causes/consequences and
M Solutions
The transmission has
problems shifting gear. The transmission is losing oil.
X
Have the transmission checked at aqualified specialist work-
shop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked at aqualified specialist work-
shop immediately. Refuelling
Important safety notes
G
WARNING
Fuel is highly flammable. Fire, naked flames
and smoking are therefore prohibited when
handling fuels.
Switch off the engine and the auxiliary heating
before refuelling. G
WARNING
Avoid contact with fuels.
It is hazardous to your health if your skin
comes into direct contact with fuels or you
breathe in fuel vapours. G
WARNING
Do not use petrol to refuel adiesel tank.N ever
mix diesel with petrol. Doin gsocould damage
the fuel system and the engine. The vehicle
could also catc hfire.
! Do not use petrol to refuel vehicles with a
diesel engine. Do not use diesel to refuel vehicles with
apetrol engine. Even small
amounts of the wrong fuel result in damage
to the fuel system and the engine.
! Do not switch on the ignition if you acci-
dentally refuel with the wrong fuel. Other-
wise, the fuel will enter the fuel lines. Notify
aq ualified specialist workshop and have
the fuel tank and fuel lines drained com-
pletely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use afilter when adding fuel from afuel
can. The fuel lines and/or the diesel injec-
tion system could otherwise be blocked by
particles from the fuel can.
Further information on fuel and on fuel grades
can be found in the "Fuel" section
(Y page 360). 156
RefuellingDriving and parking

The wear of individual componentsoft
he
brake system, such as the brake pads/linings
or brake discs, depends on the individual driv-
ing style and operating conditions.
For this reason, it is impossible to state a
mileage lifetime that will be valid under all
circumstances. An aggressive driving style
will lead to high wear. You can obtain further
information about this from your Mercedes-
Benz Servic eCentre.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometres of driving. Compen-
sate for this by applying greater force to the
brake pedal. Do not forget this, and adapt
your driving and braking accordingly during
this run-in period.
Excessively heavy braking results in corre-
spondingly high brake wear. Observe the
brake system warning lamp in the instrument
cluster and notea ny brake status messages
in the multifunction display .For high-per-
formanc edriving in particular, it is important
to maintain and have the brake system
checked regularly. Driving on wet roads
Aquaplaning If water has accumulated to
acertain depth
on the road surface, there is adanger of aqua-
planing occurring, even if:
R you are driving at low speeds.
R the tyres have adequate tread depth.
For this reason, do not drive in tyre ruts and
brake carefully.
Driving on flooded roads !
Bear in mind that vehicles travelling in
front or in the opposite direction create
waves. This may cause the maximum per-
missible water depth to be exceeded.
These notes must be observed under all
circumstances. You could otherwise dam- age the engine, the electronics or the trans-
mission.
If you have to drive on stretches of road on
which water has collected, please bear in
mind that:
R the maximum permissible still water depth
is 25 cm.
R you should drive no faster than at walking
pace. Winter driving
Important safety notes G
WARNING
If you shift down on aslippery road surface in
an attempt to increase the engine's braking
effect ,the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on aslippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is arisk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open
aw indow on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at aqualified
specialist workshop at the onset of winter.
Observe the notes in the "Winter operation"
section (Y page 330).
Driving with summer tyres Observe the notes in the "Winter operation"
section (Y
page 330). 164
Driving tipsDriving and parking

Slippery road surfaces
G
WARNING
If you shift down on aslippery road surface in
an attempt to increase the engine's braking
effect,t he drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on aslippery road surface.
If the vehicle threaten stoskid or cannot be
stopped when moving at low speed:
X Move the transmission to position N.
X Try to bring the vehicle under control by
using corrective steering.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres.
i For more information on driving with
snow chains, see (Y page 331). Driving systems
Cruise control
Important safety notes G
WARNING
Do not change down for additional engine
braking on aslippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid. G
WARNING
Cruise control cannot take account of road
and traffic conditions.
Always pay attention to traffic conditions
even when cruise control is activated.
Cruise control is only an aid designed to assist
driving. You are responsible for the vehicle's
speed and for braking in good time. G
WARNING
Do not use cruise control
R in traffic condition sthat do not allow you to
drive at aconstant speed (e.g. heavy traffic
or winding roads). You may otherwise
cause an accident.
R on slippery roads. The drive wheels may
lose their grip when braking or accelerating
and the vehicle may skid.
R when there is low visibility, e.g. due to fog,
heavy rain or snow.
General notes Cruise control maintains
aconstant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select shift range
1, 2or 3in good time. By doing so, you will
make use of the braking effect of the engine.
This relieves the load on the brake system and
preventst he brakes from overheating and
wearing too quickly.
Use cruise control only if road and traffic con-
ditions make it appropriate to maintain a
steady speed for aprolonged period. You can
store any road speed above 30 km/h.
Cruise control lever :
To activate or increase speed
; LIM indicator lamp
= To activate at the current speed/last
stored speed
? To activate or reduce speed Driving systems
165Driving and parking Z

control off message in the multifunction
displayf or approximately five seconds.
i The last speed stored is cleared when you
switch off the engine. SPEEDTRONIC
Important safety notes G
WARNING
Never depress the brake pedal continuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely. G
WARNING
Do not change down for additional engine
braking on aslippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid. G
WARNING
SPEEDTRONIC is only an aid designed to
assist driving. You are responsible for the
vehicle's speed and for braking in good time.
SPEEDTRONIC brakes automaticallysot hat
you do not exceed the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select shift range
1, 2or 3in good time. By doing so, you will
make use of the braking effect of the engine.
This relieves the load on the brake system and
prevents the brakes from overheating and
wearing too quickly. If you need additional
braking, depress the brake pedal repeatedly
rather than continuously.
You can set avariableorp ermanent limit
speed:
R variable for speed limits, e.g. in built-up
areas
R permanent for long-term speed restric-
tions, e.g. when driving with winter tyres
fitted (Y page 170) i
The speed indicated in the speedometer
may differ slightly from the limit speed
stored.
Variable SPEEDTRONIC General notes
:
To store the current speed or ahigher
speed
; LIM indicator lamp
= To store the current speed and call up the
last stored speed
? To store the current speed or alower
speed
A To switch between cruise control or DIS-
TRONIC PLUS and variableS PEEDTRONIC
B To deactivate variableS PEEDTRONIC
With the cruise control lever, you can operate
cruise control or DISTRONIC PLUS and vari-
able SPEEDTRONIC.
The LIM indicator lamp on the cruise control
lever indicates which system you have selec-
ted:
R LIM indicator lamp off: cruise control or
DISTRONIC PLUS is selected.
R LIM indicator lamp on: variableSPEED-
TRONIC is selected.
Selecting variable SPEEDTRONIC G
WARNING
If there is achange of drivers, advise the new
driver of the limit speed stored.
Only use variableS PEEDTRONIC if you will not
have to accelerate suddenly to aspeed above 168
Driving systemsDriving and parking

G
WARNING
DISTRONIC PLUS cannot take account of road
and traffic conditions. If DISTRONIC does not
recognise or no longer recognise sthe vehicle
in front, do not activate DISTRONIC or, if it is
already active, deactivate it. This is especially
the case:
R before corners
R on filter lanes
R when changing to alane with faster moving
traffic
R in comple xdriving situations or where lanes
are diverted ,e.g. at roadworks on amotor-
way
DISTRONIC PLUS otherwise maintains the
current spee dset by you or accelerates up to
the set speed.
DISTRONIC PLUS cannot take account of
weather conditions. Deactivate, or do not
activate, DISTRONIC PLUS:
R if the road sare slippery ,snow-covered or
icy. The wheels could lose their grip when
braking or accelerating. The vehicl ecould
start to skid.
R if the sensors are dirty or there is poor vis-
ibility ,e.g. due to snow, rain or fog. Dis-
tance control may be impaired.
Always pay attention to traffic conditions
even when DISTRONIC PLUS is activated.
Otherwise, you may fail to recognise dangers
in time, caus eanaccident and injure yourself
and others. G
WARNING
DISTRONIC PLUS brakes yourv ehicle up to a
maximum of 4m/s2
depending on its speed.
This corresponds to approximately 40% of
your vehicle's maximum braking power. You
must also apply the brakes yourself if this
braking power is not sufficient.
If DISTRONIC PLUS detect sarisk of collision
with avehicle in front, an intermittent warning
tones ounds. In addition, the ·distance
warning lamp in the instrument cluster lights
up. Brak etoavoidacollision. General notes DISTRONIC PLUS regulates the speed and
automatically helps you maintain the dis-
tanc
etot he vehicle detected in front. DIS-
TRONIC PLUS brakes automatically so that
the set speed is not exceeded.
On long and steep downhill gradients, you
must select shift range 1,2or 3in good time.
By doing so, you will make use of the braking
effec tofthe engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
If DISTRONIC PLUS detectsas lower-moving
vehicle in front,y our vehicle is braked in order
to maintain the preset distance to the vehicle
in front.
The radar sensor system is switched off auto-
matically in the vicinity of radio telescope
facilities (Y page 368).
If you want DISTRONIC PLUS to assist you,
the radar sensor system must be activated
(Y page 225) and operational.
If there is no vehicle in front,D ISTRONIC
PLUS operates in the same way as cruise
control in the speed range between
30 km/h and 200 km/h. If avehicle is driving
in fron tofyou, DISTRONIC operates in the
speed range between 0km/h and
200 km/h.
Do not use DISTRONIC PLUS on road swith
steep gradients. Driving systems
171Driving and parking Z