2014 MERCEDES-BENZ B-CLASS HATCHBACK Owners Manual

Switching on/off
X
Turn the key to position 0in the ignition
lock or remove it (Y page 159).
X To activate: press theÌbutton.
The indicator lamp in the Ìbutton lights
up.
X To deactivate: press theÌbutton.
The indicator lamp in the Ìbutton goes
out.
i Residual heat is deactivated automati-
cally:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on Auxiliary heating
Important safety notes G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac- tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot. Flammable materials such as leaves, grass or
twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
R no flammable materials come into contact
with hot vehicle components
R the exhaust gas can escape from the
exhaust pipe unhindered
R the exhaust gas does not come into contact
with flammable materials.
The auxiliary heating and the exhaust gas out-
let are situated in front of the right-hand front
wheel.
! 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 a longer
distance.
Switch the auxiliary heating on regularly once
a month for about ten minutes.
The auxiliary heating heats the air in the vehi- cle interior to the set temperature. This
occurs without using the heat of the running
engine. The auxiliary heating is operated
directly using the vehicle's fuel. For this rea-
son, the fuel tank must be at least Õfull 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 when the
engine is switched off. The auxiliary ventila-
tion switches off when you turn the key to key
position 2(Y page 159).
The auxiliary heating switches off automati-
cally after 30 minutes. 150
Operating the climate control systemClimate control

You cannot use the auxiliary ventilation to
cool the vehicle interior to a temperature
lower than the outside temperature.
Before switching on X
Turn the key to position 2in the ignition
lock (Y page 159).
X Set the desired temperature.
Auxiliary heating or ventilation can also be
switched on if the manually set climate con-
trol is activated. Optimum comfort is attained by setting the system 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 248).
Switching the auxiliary heating/venti-
lation on/off using the centre console
button General notes
The colours of the indicator lamps in but-
ton :mean the following:
R Blue: auxiliary ventilation is switched on
R Red: auxiliary heating is activated
R Yellow: departure time is preselected
(Y page 248) Switching on the auxiliary heating/venti-
lation
X Press button :.
The red or blue indicator lamp in button :
lights up.
Switching off the auxiliary heating/venti- lation
X Press button :.
The red or blue indicator lamp in button :
goes out.
Switching the auxiliary heating/venti-
lation on/off using the remote control General notes
Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For more information, please contact a qualified specialist workshop.
Store the remote control for the auxiliary
heating so that the auxiliary heating cannot
be switched on unintentionally. In particular,
ensure that the remote control for the auxili-
ary heating is kept out of the reach of chil-
dren.
The remote control has a range of approx-
imately 300 metres. This range is reduced by:
R sources of radio interference
R solid objects between 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
If the remote control battery is low, the bat-
tery symbol on the left of the display is shown as empty. Replace the remote control battery and observe the important safety notes when
doing so (Y page 153). Operating the climate control system
151Climate control Z

Switching the auxiliary heating/ventila-
tion on/off
Remote control
:
Display
; u Switches on the auxiliary heating/
ventilation/checks status
= . Sets the departure time
? ^ Switches off the auxiliary heating/
ventilation
A , Sets the departure time
X To activate: press and hold the ubut-
ton.
ON
ON is shown in the remote control display.
X To deactivate: press and hold the ^
button.
OFF
OFF is shown in the remote control display.
Checking the status of the auxiliary heat-
ing/ventilation
X Briefly press the ubutton.
The following messages may appear in the
display: Display Meaning
The auxiliary heating/
ventilation is switched
off.
The auxiliary ventilation
is switched on. The num-
ber in the display shows
the remaining time (in
minutes) for the auxiliary
ventilation. The auxiliary heating is
switched on. The number
in the display shows the
remaining time (in
minutes) for the auxiliary heating. A departure time has
been activated. The
departure time appears
in the display.
A departure time has
been activated. The aux-
iliary ventilation is cur-
rently activated. The
number in the display
shows the remaining
time (in minutes) for the
auxiliary ventilation. If
the vehicle is not started
after this time, the run-
ning time is increased by
five minutes. A departure time has
been activated. The aux-
iliary heating is currently
activated. The number in
the display shows the
remaining time (in
minutes) for the auxiliary heating. If the vehicle is
not started after this
time, the running time is
increased by five
minutes. If the engine has not yet reached operating
temperature when it is started, the auxiliary
heating running time is increased. The auxili-
ary heating continues to run until the operat- ing temperature is reached. If this is the case,
the y symbol appears in the remote con-
trol display and the running time is zero
minutes. 152
Operating the climate control systemClimate control

Setting the departure time
Make sure that the time set in the vehicle is
correct before setting the departure time (see the separate operating instructions). Other-
wise, the auxiliary heating may switch on at
the wrong time and at an unsuitable location.
When setting the departure time, observe the
important safety notes (Y page 150).
X Briefly press the ubutton.
X Press the ,or. button repeatedly
until the time to be changed appears in the display.
X Press the uand^ button 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^ button simulta-
neously.
The new departure time is stored.
Activating the set departure time X Briefly press the ubutton.
X Press the ,or. button repeatedly
until the desired departure time appears in the display.
X Press the ubutton.
The Ísymbol, the departure time and,
depending on the selected departure time, the letter A, BorCappear in the display.
Deactivating the set departure time
X Briefly press the ubutton.
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.
OFF
OFF is shown in the remote control display. Replacing the remote control battery Important safety notes
G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
Replacing the battery If the battery needs to be replaced, the bat-
tery symbol on the left of the display is shown
as empty. A CR2450 lithium battery is
required when replacing the battery. Operating the climate control system
153Climate control Z

X
Press a pointed object into recess :.
X Slide battery cover ;backwards in the
direction of the arrow.
X Remove old battery =.
X Insert the new battery with the lettering
facing upwards.
X Slide battery cover ;in the opposite direc-
tion to the arrow on the remote control until
it engages.
X Use the remote control to check the vehi-
cle's auxiliary heating functions. 154
Operating the climate control systemClimate control

Problems with the auxiliary heating/ventilation
Display messages
Possible causes/consequences and
M
MSolutions 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/ventila-
tion on or off using the remote control. FAIL The auxiliary heating cannot be switched on or has switched itself
off.
The starter battery is not sufficiently charged.
X Charge the starter battery.
X Make another attempt to switch on the auxiliary heating/venti-
lation using the remote control. The auxiliary heating cannot be switched on or has switched itself
off.
The fuel tank content is below the reserve fuel level.
X Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control. The auxiliary heating/ventilation cannot be switched on or has
switched itself off.
The auxiliary heating/ventilation is malfunctioning.
X Have the auxiliary heating/ventilation checked at a qualified
specialist workshop. Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. 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 vents into 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 vents or ventilation grilles
in the vehicle interior
i Move the adjusters for the air vents ver-
tically or horizontally, to set the direction of the airflow. Air vents
155Climate control Z

i
Optimal climate control function is ach-
ieved by opening the air vents fully and set- ting the adjusters to the middle position. Adjusting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents :to the
left.
X To close the centre air vent: turn the
adjuster in one of centre air vents :clock-
wise as far as it will go. Adjusting the side air vents
:
Side window demister vent
; Side air vent
X To open a side air vent: turn the adjuster
in side air vent ;to the left.
X To close a side air vent: turn the adjuster
in side air vent ;clockwise as far as it will
go. Setting the rear-compartment air
vents
:
Rear-compartment air vent, left
; Rear-compartment air vent, right
= Rear-compartment air vent thumbwheel
X To open/close: turn thumbwheel =up or
down.
i If the control panel in the front is switched
off, no air can flow through the rear air
vents. 156
Air ventsClimate control

Useful information
............................158
Running-in notes ............................... 158
Driving ............................................... 158
Manual transmission ........................168
Automatic transmission ...................169
Refuelling ........................................... 177
Parking ............................................... 181
Driving tips ........................................ 184
Driving systems ................................ 188
Towing a trailer ................................. 224 157Driving and parking