2014 MERCEDES-BENZ CL-Class heating

The system automatically switches off
approximately 20 minutes after it is set to
level
1.
X Make sure that the SmartKey is in position
1or 2in the ignition lock.
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
Problems with the seat heating The seat heating has switched itself off
prematurely. The vehicle's electrical system
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. Switching the seat ventilation on/off
Switching on/off The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
i
If the battery voltage is too low, the seat
ventilation may switch off. X
Make sure that the SmartKey is in position
2in the ignition lock.
X To switch on: press button:repeatedly
until the desired ventilation level is set. i
You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (Y page 89). The seat
ventilation of the driver's seat
automatically switches to the highest level.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
Problems with the seat ventilation The seat ventilation has switched off
prematurely. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
X
Switch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting. Steering wheel
Important safety notes
G
WARNING
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving
could cause the driver to lose control of the
vehicle.
The electrical steering wheel adjustment
feature can be operated at any time.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. Achild's unsupervised access to a
vehicle could result in an accident and/or
serious personal injury. 102
Steering wheelSeats, steering wheel and mirrors

Adjusting the steering wheel
:
To adjust the steering wheel position
(fore-and-aft adjustment)
; To adjust the steering wheel height
i Other topics:
R EASY-ENTRY/EXIT feature
(Y page 103)
R storing settings (Y page 106)
R operating the on-board computer
(Y page 337) Steering wheel heating
Switching on/off The steering-wheel heating heat
sthe leather
areas of the steering wheel. X
Make sure that the SmartKey is in position
2 in the ignition lock.
X To switch on/off: turn the lever in the
direction of arrow :or;.
Indicator lamp =lights up or goes out. Vehicles without KEYLESS-GO: when you
remove the SmartKey from the ignition lock,
the steering wheel heating is deactivated.
Vehicles with KEYLESS-GO: when you switch
off the ignition and open the driver's door, the
steering wheel heating is deactivated.
i
The steering wheel heating is deactivated
when the temperature in the vehicle
interior is higher than 86 ‡ (30 †).
i The steering wheel heating is switched off
automatically after about 24 minutes. EASY-ENTRY/EXIT feature
Important safety notes The EASY-ENTRY/EXIT feature makes getting
in and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature using COMAND
(Y
page 236). G
WARNING
You must make sure no one can become
trapped or injured by the moving steering
wheel and driver's seat when the EASY-
ENTRY/EXIT feature is activated.
To stop steering wheel and seat movement,
do one of the following:
R move the seat adjustment switch.
R move the steering column adjustment
switch.
R press one of the memory function position
buttons or memory button M.
Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could open the driver's door and
unintentionally activate the EASY-ENTRY/
EXIT feature. This could result in an accident
and/or serious personal injury. G
WARNING
Let the system complete the adjustment
procedure before setting the vehicle in
motion. All steering wheel adjustment must Steering wheel
103Seats, steering wheel and mirrors
Z

Problem Possible causes/consequences and
M Solutions
You see a message
informing you that the
DVD containing the
digital map is
incompatible with the
system software. The DVD containing the digital map cannot be used for the update.
X
To confirm the message: pressWthe COMAND controller.
X Eject the DVD.
X Have the system software updated at an authorized Mercedes-
Benz Center. The installation of the
map software has
failed. The DVD is dirty or scratched.
X
Clean the DVD.
X Restart installation. There is overheating due to excessive temperatures in the vehicle
interior.
X
Wait until the vehicle interior has cooled down.
X Restart installation. COMAND's integral hard drive is faulty.
X
Consult an authorized Mercedes-Benz Center. Telephone
General notes
Introduction COMAND, in conjunction with a Bluetooth
®
-
capable mobile phone, enables you to make
calls via the Bluetooth ®
interface.
Using the Bluetooth ®
interface and a suitable
mobile phone, you can use the hands-free
system, import contacts from the mobile
phone and receive vCards.
More detailed information on suitable mobile
phones and on connecting Bluetooth ®
-
capable mobile phones to COMAND can be
found on the Internet at
http://www.mbusa-mobile.com. Or call
the Mercedes-Benz Customer Assistance
Center on
1-800-FOR-MERCedes(1-800-367-6372) for
the USA or on 1-800-387-0100 for Canada. Safety notes G
WARNING
A driver's attention to the road must always
be his/her primary focus when driving. For
your safety and the safety of others, we
recommend that you pull over to a safe
location and stop before placing or taking a
telephone call. If you choose to use the mobile
phone while driving, please use the handsfree
facility and only use the mobile phone when
weather, road, and traffic conditions permit.
Some jurisdictions prohibit the driver from
using a mobile phone while driving a vehicle.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second. Telephone
181COMAND Z

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 note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 29).Overview of climate control systems
Important safety notes
G
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. Aclogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a blocked filter replaced at a Mercedes-
Ben zCenter as soon as possible. G
WARNING
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise, the windows could fog up,
impairing visibility and endangering you and
others.
Automatic climate control controls the
temperature and the humidity in the vehicle
interior and filters undesirable substances
from the air.
Automatic climate control is only operational
when the engine is running 13
.O ptimum
operation is only achieved if you drive with the
side windows and sliding sunroof closed.
You can also set some automatic climate
contro lfunction svia COMAND (Y page 239).i
Ventilate the vehicle for a brief 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 can filter out most
particles of dust, and completely filters out
pollen .Aclogged filter reduces the amount
of air 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 .As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Maintenance
Booklet.
i It is possible that the blower may be
activated automatically 40 minutes after
the SmartKey is removed. The vehicle is
then ventilated for 30 minutes to dry the
air-conditioning system.
13 The residual heat function can only be activated/deactivated if the ignition is switched off. 262
Overview of climate control systemsClimate control

Activating/deactivating air-
recirculation mode
You can deactivate the flo woffresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the
vehicle will then be recirculated. G
WARNING
Fogged windows impair visibility,
endangering you and others. If the windows
begi nto fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior
window fogging persists, make sure the air
conditioning is activated, or press the ¬
button.
X Turn the SmartKey to position 2in the
ignition lock.
X To activate: press thegrocker switch
up or down.
The indicator lamp in the grocker
switch lights up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. The indicator lamp in the
g rocker switch is not lit when
automatic air-recirculation mode is
activated.
Outside air is added after about
30 minutes.
X To deactivate: press thegrocker
switch up or down.
The indicator lamp in the grocker
switch goes out. i
Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately 41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡ (5 †) Activating/deactivating the residual
heat function
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X Turn the SmartKey to position 0in the
ignition lock or remove it.
X To activate: press theÌrocker switch
up or down.
The indicator lamp in the Ìrocker
switch lights up.
X To deactivate: press theÌrocker
switch up or down.
The indicator lamp in the Ìrocker
switch goes out.
i Residual heat is deactivated
automatically:
R after about 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low Operating the climate control systems
267Climate control Z

Setting the air vents
Important safety notes
G
WARNING
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.
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 intake grille on the hood free
of blockages, such as ice, snow or leaves
R never cover the air vents or air intake grille
in the vehicle interior.
i For virtually draft-free ventilation, adjust
the sliders of the air vents to the center
position. Setting the center air vents
:
Fixed center air vent
; Center air vent, right
= Center vent thumbwheel, right ?
Center vent thumbwheel, left
A Center air vent, 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 defroster vent :is never
completely shut, even if side air vent ;is
shut. Setting the air vents in the stowage
compartment
When automatic climate control is activated
the stowage compartmen tcan be ventilated,
for instance to cool its contents. The level of
airflow 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 stowage compartmen tair vent
when heating mode is activated and
activate "cooling with air dehumidification"
if the outside temperature is high.
Otherwise, temperature-sensitive items
stored in the stowage compartmen tcould
be damaged. 268
Setting the air ventsClimate control

X
To switc hthe ventilation on/off: push
rocker switch down ;or up :. Setting the glove box air vent
When automatic climate control is activated,
the glove box can be ventilated, for instance
to cool its contents. The level of airflow
depends on the airflow and aird istribution
settings.
! Close the air ven twhen heating the
vehicle.
At high outside temperatures, open the air
vent and activate the "cooling with air
dehumidification" function. Otherwise,
temperature-sensitive items stored in the
glove box could be damaged. X
To open: turn thumbwheel :counter-
clockwise from position 3to position 2.
X To close: turn thumbwheel :clockwise
from position 2to position 3. Setting the rear-compartment air
vents
Setting the center vents in the rear
compartment :
Rear-compartment air vent, left
; Rear-compartment air vent, right
= Rear-compartment air vent thumbwheel,
right
? Rear-compartment air vent thumbwheel,
left
X To open/close: turn thumbwheel =
or ? to the right or left.
i Close the rear-compartment air vents
when heating mode is activated, as no
warm air flows through the rear-
compartmenta ir vents in the basic heating
setting. Setting the air vents
269Climate control Z

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.
Exhaust check G
WARNING
Inhalation of exhaus tgas is hazardous to your
health. All exhaust gas contains carbon
monoxide (CO), and inhaling it can cause
unconsciousness and possible death.
Do no trun the engin einconfined areas (such
as a garage) which are not properly ventilated.
If you think that exhaust gas fumes are
entering the vehicle while driving, have the
cause determined and corrected
immediately. If you must drive under these
conditions, drive only with at least one
window fully open at all times.
Certain engine systems are designed to keep
the level of poisonous components in exhaust
fumes within legal limits.
These systems only work at peak efficiency if
they are serviced exactly in accordance with
the manufacturer's specifications. For this
reason, all work on the engine should only be
carried out by qualified and authorized
Mercedes-Benz technicians.
The engine settings must not be changed
under any circumstances. Furthermore, all
specific service work must be carried out at
regular intervals and in accordance with the
Mercedes-Benz service requirements. Details
can be found in the Maintenance Booklet. Braking
Important safety notes G
WARNING
On slippery road surfaces, never downshift in
order to obtain braking action. This could
result in drive wheel slip and reduced vehicle control. Your vehicle's ABS will not prevent
this type of loss of control.
G
WARNING
Make sure that you do not endanger other
road users when you apply the brakes.
Downhill gradients !
On long and steep gradients, you must
reduce the load on the brakes by shifting
early to a lower gear. This allows you to take
advantage of the engine braking effect and
helps avoid overheating and excessive
wear of the brakes.
When you take advantage of the engine
braking effect, a drive wheel may not turn
for some time, e.g. on a slippery road
surface. This could cause damage to the
drive train. This type of damage is not
covered by the Mercedes-Benz warranty.
Heavy and light loads G
WARNING
Depressing the brake pedal constantly results
in excessive and premature wear to the brake
pads.
It may also cause the brakes to overheat,
seriously impairing their effectiveness. It may
then not be possible to stop the vehicle in
sufficient time to avoid an accident.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately, but
drive on for a short while. This allows the
airflow to cool the brakes more quickly.
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. You have to depress the brake pedal Driving tips
293Driving and parking
Z