2011 MERCEDES-BENZ CLS-CLASS heating

X
Keep the air intake grille in front of the
windshield free of snow, leaves, sticks, and
any other debris.
X Always keep all air vents and grilles in the
passenger compartment free from
obstruction.
i For draft-free ventilation, move the
adjustable center and side air vents to the
middle position.
Center air vents :
Left center air vent, adjustable
; Right center air vent, adjustable
= Thumbwheel for air volume control for
adjustable right center air vent
? Thumbwheel for air volume control for
adjustable left center air vent
X Opening/closing: Turn thumbwheels =
and ? upward or downward. Side air vents Example illustration driver’s side
:
Left side defroster air vent, fixed
; Left side air vent, adjustable
= Thumbwheel for air volume control for
adjustable left side air vent
X Opening/closing: Turn thumbwheel = in
the required direction.
Front armrest storage compartment
ventilation The front armrest storage compartment can
be ventilated, for instance to cool its
contents, when the climate control system is
activated. The level of airflow to the front
armrest storage compartment depends on
the airflow and air distribution settings. The
temperature of the air is approximately the
same as that of the air flowing from the center
air vents.
!
Close the front armrest storage
compartment air vent when heating the
vehicle interior. Activate the air
conditioning (cooling function) when the
outside temperature is high. Otherwise,
temperature-sensitive items stored in the
front armrest storage compartment could
be damaged. 148
Climate control systemControls in detail
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X
Opening/closing air vent: Slide lever :
up or down.
Rear center console air vents :
Left rear center air vent, adjustable
; Right rear center air vent, adjustable
= Thumbwheel for air volume control for
right rear center air vent
? Rear climate control panel
A Thumbwheel for air volume control for left
rear center air vent
X Opening/closing: Turn thumbwheel = or
A upward or downward. Adjusting air distribution
The air distribution can be adjusted
separately on each side of the passenger
compartment.
The symbols on the control represent the
following functions: Symbol Function
M
Directs air through the center,
side and defroster air vents to
the windshield and front door
windows
P
Directs air through the center
and side air vents
L
Directs air into the entire
vehicle interior
O
Directs air through the center
and side air vents and to the
footwells
X
Turn air distribution control : or C
(Y page 143) to the desired symbol.
You can also turn the air distribution control
to a position between two symbols. Adjusting air volume
X Decreasing/increasing: Press button
I or K. Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
front door windows.
i Keep this setting selected only until the
windshield or the front door windows are
clear again.
X Activating: Press button ¬.
The indicator lamp in the button comes on.
The climate control switches to the following
functions automatically:
R cooling on to dehumidify
R most efficient blower speed and heating
power, depending on outside temperature Climate control system
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The indicator lamp in button
g is not lit
when the air recirculation mode is switched
on automatically.
A quantity of outside air is added after
approximately 30 minutes.
X Deactivating: Press button g again.
The indicator lamp in the button goes out.
i The manually selected air recirculation
mode is deactivated automatically:
R after 5 minutes if the outside
temperature is below approximately
41‡ (5†)
R after 5 minutes if the air conditioning is
turned off
R after 30 minutes if the outside
temperature is above approximately
41‡ (5†) Residual heat and ventilation
This feature is only available in Canada
vehicles.
With the engine turned off, it is possible to
continue to heat or ventilate the interior for
up to 30 minutes. This feature makes use of
the residual heat produced by the engine.
i If

you switch on the residual heat function
when outside temperatures are high, only
the ventilation will be switched on.
i Regardless of the selected air volume, the
blower operates at low speed.
i How long the system will provide heating
depends on the coolant temperature and
the selected temperature. The blower will
run at speed setting 1 regardless of the air
volume control setting.
X Activating: Switch off the ignition.
X Press button Ì.
The
indicator lamp in the button comes on. X
Deactivating: Press button Ì.
The indicator lamp in the button goes out.
The residual heat is deactivated
automatically:
R when the ignition is switched on
R after approximately 30 minutes
R if the battery voltage drops
R if the coolant temperature is too low Rear window defroster
G
Warning!
Any accumulation of snow and ice should be
removed
from the rear window before driving.
Visibility could otherwise be impaired,
endangering you and others.
The rear window defroster uses a large
amount of power. To keep the battery drain
to a minimum, switch off the defroster as
soon as the rear window is clear. The
defroster is switched off automatically after
some time of operation depending on the
outside temperature.
X Switch on the ignition.
X Switching on: Press button ¤ on the
respective climate control panel.
The

indicator lamp in the button comes on.
X Switching off: Press button ¤ again.
The rear window defroster switches off when
the battery voltage is too low. The indicator
lamp in button ¤ flashes. Too many
electrical consumers may be operating
simultaneously.
X Switch off consumers that are currently not
needed if required. Rear window defroster
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X
Grab and remove ashtray insert from
ashtray frame.
X Reinstalling ashtray insert: Push the
ashtray insert back into the frame until it
engages.
X Closing: Push down cover :.
Rear door ashtray X
Opening: Press the top of ashtray ;
briefly.
X Removing ashtray insert: Pull ashtray
release : in direction of arrow.
X Remove ashtray insert upwards from
ashtray frame.
X Reinstalling ashtray insert: Push ashtray
insert back into ashtray frame until it
engages.
X Closing: Push the top of ashtray ;.Cigarette lighter
G
Observe Safety notes, see page 52. G
Warning!
Never touch the heating element or sides of
the lighter; they are extremely hot. Hold the
knob only.
Make sure any children traveling with you do
not injure themselves or start a fire with the
hot cigarette lighter. If the engine is off and the cigarette lighter is
being used extensively, the vehicle battery
may become discharged.
X
Open the cover ( Y page 162). X
Switch on the ignition.
X Push in cigarette lighter :.
Cigarette lighter : will pop out
automatically when hot.
X Take out cigarette lighter :.
X Reinsert cigarette lighter : in its socket
after use. Power outlets
! Make sure no fluids come into contact
with the power outlet, as this could cause
a short circuit.
i Make sure the override switch is not
activated. The power outlet in the rear
center console will not function if the
override switch is activated.
The power outlets can be used to
accommodate 12V DC electrical accessories
(e.g. auxiliary lamps, mobile phone chargers)
up to a maximum of 15 A (180 W).
If the engine is off and the power outlets are
being used extensively, the vehicle battery
may become discharged.
X Switch on the ignition. Useful features
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Driving instructions
Drive sensibly – save fuel
To save fuel you should:
R Keep tires at the recommended inflation
pressures.
R Remove unnecessary loads.
R Remove roof rack when not in use.
R Allow engine to warm up under low load
use.
R Avoid frequent acceleration and
deceleration.
R Have all maintenance work performed at
the intervals specified in the Maintenance
Booklet and as required by the
Maintenance system. Contact an
authorized Mercedes-Benz Center.
Fuel
consumption is also increased by driving
in cold weather, in stop-and-go traffic, on
short trips and in mountainous areas. Drinking and driving
G
Warning!
Drinking and driving and/or taking drugs and
driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and
judgment.
The possibility of a serious or even fatal
accident

are greatly increased when you drink
or take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or
taking drugs. Pedals
G
Warning!
Make sure absolutely no objects are
obstructing the pedals’ range of movement.
Keep the driver’s footwell clear of all obstacles. If there are any floormats or
carpets in the footwell, make sure that the
pedals still have sufficient clearance.
During sudden driving or braking maneuvers,
the objects could get caught between the
pedals. You could then no longer brake or
accelerate. This could lead to accidents and
injury.
Power assistance
G
Warning!
There is no power assistance for the steering
and
the brake when the engine is not running.
Steering and braking requires significantly
more effort and you could lose control of the
vehicle and cause an accident as a result.
Do not turn off the engine while the vehicle is
in motion. Brakes
Downhill grades !
When driving down long and steep
grades, relieve the load on the brakes by
shifting into a lower gear to use the
engine’s

braking power. This helps prevent
overheating of the brakes and reduces
wear.
When using the engine’s braking power, a
drive wheel may not spin for an extended
period of time, e.g. on slippery road
surfaces. This may cause serious damage
to the drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.
Continuous or hard braking G
Warning!
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads. 210
Driving instructions
Operation
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It can also result in the brakes overheating,
thereby significantly reducing their
effectiveness. It may not be possible to stop
the vehicle in sufficient time to avoid an
accident.
After hard braking, it is advisable to drive on
for
some time, rather than immediately park,
so that the air stream will cool down the
brakes faster.
Wet roads G
Warning!
After driving in heavy rain for some time
without
applying the brakes or through water
deep enough to wet brake components, the
first braking action may be somewhat
reduced and increased pedal pressure may be
necessary to obtain expected brake effect.
Maintain a safe distance from vehicles in
front.
To help prevent brake disk corrosion after
driving on wet or salt-covered roads, it is
advisable to brake the vehicle with
considerable force prior to parking. The heat
generated serves to dry the brakes.
Salt-covered roads G
Warning!
A layer of salt on the brake discs and the brake
linings may cause a delay in the braking
effect, resulting in a significantly increased
braking distance, which could lead to an
accident.
To avoid this danger, you should:
R occasionally brake carefully when you are
driving on salt-covered roads, so that any
layer of salt that may have built up on the
brake discs and the brake linings is removed without putting other road users
at risk
R maintain a greater distance to the vehicle
ahead and drive with particular care
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new

trip, so that salt residues are removed
from the brake disc
Brake service !
The brake fluid level in the reservoir may
be

too low if the brake warning lamp in the
instrument cluster comes on and an
acoustic warning sounds although the
parking brake is released. Observe
additional messages in the multifunction
display that may appear.
Brake pad wear or a leak in the system may
be the reason for low brake fluid in the
reservoir.
Have the brake system inspected
immediately. Contact an authorized
Mercedes-Benz Center.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Center.
Only install brake pads and use brake fluid
recommended by Mercedes-Benz. G
Warning!
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle

can be degraded to an extent that safe
braking is substantially impaired. This could
result in an accident.
! Because the ESP ®
operates
automatically, the engine and ignition must
be shut off (SmartKey in starter switch
position 0 or 1 or KEYLESS-GO start/stop
button in position 0 or 1) when the parking
brake is being tested on a brake test Driving instructions
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Engine
Problem
Possible causes/consequences and
X Solutions= (USA only)
; (Canada only)
The yellow engine
malfunction indicator
lamp comes on when
the engine is running. There may be a malfunction in
R
the fuel management system
R the ignition system
R the emission control system
R systems which affect emissions
Such malfunctions may result in excessive emissions values and
may
switch the engine to limp-home (emergency operation) mode.
X Have the vehicle checked as soon as possible at an authorized
Mercedes-Benz Center.
i Some states may by law require you to visit a workshop as
soon

as the engine malfunction indicator lamp comes on. Check
local requirements. = (USA only)
; (Canada only)
The yellow engine
malfunction indicator
lamp comes on when
the engine is running. A loss of pressure has been detected in the fuel system. The fuel
cap may not be closed properly or the fuel system may be leaky.
X
Check the fuel cap ( Y page 176).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system checked by an
authorized Mercedes-Benz Center. ?
The red coolant
temperature
warning lamp
comes on when
the engine is
running. There is insufficient coolant in the reservoir.
If this warning lamp comes on frequently, there is a leak in the
cooling system.
If the coolant level is correct, the electric radiator fan may be
broken.
X
Immediately add coolant to prevent engine from overheating
(Y page 180).
X Have the cooling system checked.
X If the coolant temperature is below 248‡ (120†), you can
continue driving to the nearest authorized Mercedes-Benz
Center.
X Avoid high engine loads (e.g. driving uphill) and stop-and-go
driving. What to do if …
257
Practical hints
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