
Adjust fan speed (the setting is indicated by the number of illuminated
control lamps shown in the knob)
Adjust the temperature for the left side (or for both sides) 1)
▶ Reduce the temperature /
Increase the temperature
Adjust the temperature for the right side (or for both sides) 2)
▶ Reduce the temperature /
Increase the temperature
Depending on equipment fitted:
▶ Auxiliary heating and ventilation on / switch off » page 109
▶ Switch off Climatronic
Interior temperature sensor
Switch recirculation on/off » page 107
Intense air flow to the windscreen on / off (when switching on, the air
flow to the windows and
is also switched on)
Switch on/off the rear window heater » page 71
Switch on/off the windscreen heating » page 71
Setting Climatronic in Infotainment (also operate with some functions)
Synchronize the temperature inside the entire vehicle according to the
temperature setting on the driver's side
Switching automatic mode on » page 107
Switch the cooling system on/off
When the function is switched on, a warning light lights up within or below the
button.
Setting temperature
The temperature can be set on the Climatronic control unit or in Infotain-
ment » page 106 . In the range between 16 ° C to 29.5 ° C, an automatic tem-
perature control takes place.
At a temperature setting below 16 ° C, lights up in the temperature display,
the Climatronic functions with maximum cooling performance .
At a temperature setting over 29.5 ° C, lights up in the temperature display,
the Climatronic functions with maximum heating output.
CAUTION
Do not cover the interior temperature sensor H » Fig. 129 - the function of the
Climatronic could be affected.DEFGHNoteIn order to ensure adequate thermal comfort, there may be an increase in en-
gine idle speed during operation of the Climatronic in some circumstances.
Operate Climatronic in Infotainment
Fig. 130
Infotainment Columbus, Amund-
sen, Bolero:Climatronic main
menu
Fig. 131
Infotainment Swing: Climatronic
main menu
Read and observe on page 105 first.
›
To display the main menupress the button
on the Climatronic control
unit.
Function surfaces and screen display » Fig. 130 and. » Fig. 131ADisplays the current operation mode (or set the operation mode) of
the ClimatronicBSet the desired temperature, front - left sideCSet the desired temperature, front - right sideDSetting the power in operation 1)
Applies to left-hand drive vehicles.
2)
Applies to right-hand drive vehicles.
106Using the system

Colour representation of the air flow from the air vents at the front
(Blue colour - temperature reduction / red colour - temperature in-
crease)Switching on/off the ClimatronicSet the auxiliary heater and ventilationSwitch on/off the windscreen heating a)Other Climatronic settingsa)
When switched on, the symbol in the function surface is green.
Other Climatronic settings
Press the
button on the Climatronic control panel → tap the function sur-
face on the Infotainment screen.
■
Air con. profile
- Setting the operating performance during operation (ap-
plies to the infotainment Swing)
■
Automatic air recirculation
- Automatic re-circulated air mode on/off
■
Automatic auxiliary heater
- Quick interior heating on/off
■
Automatic windscreen heating
- Activates/deactivates the automatic windscreen
heating
Climatronic - automatic operation
Read and observe
on page 105 first.
The automatic mode is used in order to maintain a constant temperature andto demist the windows in the interior of the car.
›
To turn on , press the
» Fig. 129 on page 105 .
›
To turn off , press any button for the air distribution or change the blower
speed. The temperature regulation is continued.
Holding the button will turn on
automatically.
Operating modes
Automatic mode works in three modes - moderate, medium, and intensive.
Setting the different modes is carried out via the function surface
D
» Fig. 130
on page 106 and. » Fig. 131 on page 106 .
After the automatic mode is switched on, Climatronic works in the last selec-
ted mode. The currently selected mode is displayed on the Infotainment
screen.
Air distribution control
Read and observe
on page 105 first.
The recirculation mode prevents contaminated outside air getting into the In-terior of the vehicle. In recirculated air mode air is sucked out of the interior of
the vehicle and then fed back into the interior.
›
To switch on press the
button. The warning light below the button lights
up.
›
To switch off , press the
button again. The warning light below the button
goes out.
Heating and manual air conditioning system
If the air distribution control is set to position when the recirculation modes
is switched on, the recirculated-air mode is switched off. By pressing the
button, the air recirculation also in this position can be switched on again.
When the cooling system (button ) is switched on and the temperature reg-
ulator is “turned” to the left, the recirculated-air mode is switched on.
Climatronic
The Climatronic can have a sensor that measures the air recirculation mode
and automatically turns on if there is an increased concentration of pollutants
in the incoming air.
When the pollutant concentration decreases to the normal level, the recircula-
ted air mode is automatically switched off.
Automatically switch on / off the air recirculation function can be set in the In-
fotainment screen. by pressing the button on the Climatronic and by sub-
sequently pressing the function surfaces
→
Automatic air recirculation
. Auto-
matic power on / off function at a temperature above 2 ° C.
A shut-off of the air recirculation function is carried out by pressing the
button, possibly depending on the moisture conditions in the vehicle interior.
WARNINGThe recirculation system cannot be switched on for a longer period of time,
because no fresh air is fed through from the outside. “Stale air” may result
in fatigue in the driver and occupants, reduce attention levels and also
cause the windows to mist up. As soon as windows mist up, turn on the re-
circulation system immediately - The is a risk of an accident! 107Heating and ventilation

WARNING■The auxiliary heating must never be operated in closed rooms (e.g. garag-
es) – risk of poisoning!■
The auxiliary heating must not be allowed to run during refuelling – risk
of fire.
■
The exhaust pipe of the auxiliary heating is located on the underside of
the vehicle. If you want to use the auxiliary heating, do not park the vehicle
in places where the exhaust fumes can come into contact with flammable
materials such as dry grass, undergrowth, leaves, spilled fuel etc. - There is
a risk of fire.
CAUTION
The air inlet in front of the windscreen must be free (e.g. of ice, snow or
leaves) to ensure that the auxiliary heating operates properly.
Note
■ The auxiliary heating only switches the blower on, if it has achieved a coolant
temperature of approx. 50 °C.■
In the engine compartment, water vapour may form during the operation of
the heater.
Switch on / off
Fig. 134
Button for switching on / off (Climatronic / manual air condition-
ing)
Read and observe and on page 109 first.
Functional requirements of the auxiliary heating.
The charge state of the vehicle battery is sufficient.
The fuel supply is adequate (the warning light
is not illuminated in the
instrument cluster).
Manual on / off ▶ Using the
button on the control panel of the air conditioning » Fig. 134.
▶ Using the
(switch on) /
(switch off) button on the remote control opera-
tion.
Automatic on / off ▶ Via an automatically programmed and activated pre-set time in Infotainment.
▶ According to the environmental conditions.
Switching off the auxiliary heating takes place automatically when there is a
lack of fuel (warning light in the instrument cluster lights up).
After switching off the system, the coolant pump and the auxiliary heating will
continue running a little while longer in order to burn the remaining fuel in the
heating.
Setting automatic on / off
Climatronic: on the Climatronic button
→ Tap the function area
in the
Infotainment screen. There will be a display of the last set operating mode
with the option to change this.
Manual air conditioning: on Infotainment, press the button
→ Tap the
function surface .
Then follow the instructions on the Infotainment screen.
When automatic switching on is activated, the warning light in the symbol
button lights up for about 10 seconds after the ignition is turned off » Fig. 134.
109Heating and ventilation

CAUTIONEnsure that battery acid does not come into contact with the bodywork –
There is a risk of damage to the vehicle.
Note
■ We recommend having all work on the vehicle battery carried out by a spe-
cialist garage.■
You should replace batteries older than 5 years.
Check condition
Fig. 296
Vehicle battery: Open the cover / acid level indicator
Read and observe
and on page 258 first.
The battery condition is checked regularly by a specialist garage as part of the
inspection service.
Check the acid level
For car batteries with acid level indicator, acidity can be checked on the basis
of a colour display. In vehicle batteries with the label “AGM” there is no acid
level examination.
Depending on the equipment, the vehicle battery may be provided with a cov-
er, this can be opened in the direction of arrow » Fig. 296 -
.
Air bubbles can influence the colour of the indicator. For this reason carefully
tap on the indicator before carrying out the check » Fig. 296 -
.
Black colour – electrolyte level is correct.
Colourless or light yellow colour – electrolyte level too low, the battery must be replaced.
Battery discharge
If frequent short journeys are made, the vehicle battery does not recharge suf- ficiently.
The battery capacity decreases at low temperatures.
If the vehicle is not used for longer than 3 to 4 weeks, then disconnect the
negative terminal
of the battery or charge the battery constantly with a very
low charging current.
Charging
Read and observe
and on page 258 first.
Only charge the battery when the ignition and all consumers are switched off.
Refer to the instructions of the charger manufacturer.
Charging
›
For vehicles with the START-STOP system or auxiliary heater
, connect the
-terminal of the charger on the battery’s -pole,
the -terminal of the
charger to the ground point of the engine » page 272.
›
For vehicles without the START-STOPsystem or auxiliary heating, connect
the charger terminals to the corresponding battery poles ( to
,
to
).
›
Plug the mains cable of the charger into the power socket and switch on the
device.
›
After charging has been successful: Switch off the charger and remove the
mains cable from the power socket.
›
Disconnect the terminals of the charger from the vehicle battery.
A charging current of 0.1 multiple of the total vehicle battery capacity (or low-
er) must be used until full charging is achieved.
WARNING■ When charging the vehicle battery, hydrogen is released - risk of explo-
sion. An explosion can be caused through sparking while unclamping or
loosening the cable plug.■
So-called “quick-charging” of the vehicle battery is dangerous and re-
quires a special charger and specialist knowledge. Therefore, have“Quick
loading” carried out by a specialist garage.
259Inspecting and replenishing

No.Consumer50Opening the boot lid51Multi-function unit for taxi vehicles52Voltage stabiliser for taxi vehicles53Rear window heating
Fuses in the engine compartment
Fig. 328
Fuse panel cover: Removing cover / plastic clip for fuses
Read and observe
and on page 278 first.
Replacing fuses
›
Remove the ignition key, turn off the lights and all electrical consumers.
›
Press together the lock buttons of the cover simultaneously in the direction
of arrow
1
and remove the cover in the direction of arrow
2
» Fig. 328 .
›
Remove the plastic clip under the cover of the fuse box » Fig. 328.
›
Use the clip to pull the fuse out, then insert a new fuse.
›
Replace the clamp in the original position.
›
Replace the cover, push the lock buttons of the cover together and lock.
CAUTION
The cover of the fuse box in the engine compartment must always be used
correctly, otherwise water may penetrate into the fuse box – there is a danger
of damage to the vehicle!Fuse assignment in engine compartmentFig. 329
Fuses
Read and observe and on page 278 first.
No.Consumer1ESC, ABS2ESC, ABS3Engine control system4Radiator fan, oil temperature sensor, air mass meter, valve for fuel
pressure control, electric auxiliary heater, oil pressure relief valve,
valve for exhaust gas recirculation5Ignition coil of CNG relay, fuel injectors, fuel metering valve6Brake sensor7Coolant pump, radiator shutters, oil pressure valve, gear oil valve8Lambda probe9Ignition, preheating unit, flue damper, heating the crankcase venti-
lation10Fuel pump, ignition11Electrical auxiliary heating system12Electrical auxiliary heating system13Automatic gearbox14Windscreen heater15Horn16Ignition, fuel pump17ABS, ESC, motor control system, Relay for heated windscreen18Databus, battery data module 281Fuses and light bulbs

No.Consumer19Windscreen wipers20Anti-theft alarm21Windscreen heater22Engine control system, voltage stabilizer for taxi vehicles23Starter24Electrical auxiliary heating system31Vacuum pump32Not assigned33Not assigned34All-wheel drive35Not assigned36Not assigned37Aux. heating38Not assigned
Bulbs
Introduction
This chapter contains information on the following subjects:
Bulb arrangement in the front headlights
283
Replacing the bulb for the side light (Halogen headlights)
283
Changing the bulb for main beam, separate daytime running lights, and
parking light
283
Replacing the bulb for the side light (Xenon headlights)
284
Change bulb for fog lights switch - Variant 1
284
Change bulb for fog lights switch - Variant 2
285
Changing the bulb for the licence plate light
285
Removing/installing tail light
286
Replacing the bulbs in the tail lamp assembly - Variant 1
286
Replacing the bulbs in the tail lamp assembly - Variant 2
287
We recommend having bulbs replaced by a specialist garage or seeking other
expert help in the event of any uncertainties.
▶ Switch off the ignition and all of the lights before replacing a bulb.
▶ Faulty bulbs must only be replaced with the same type of bulbs. The designa-
tion is located on the light socket or the glass bulb.
We recommend having the headlight settings checked by a specialist garage after replacing a bulb in the low, high or fog beam.
In the case of failure of a Xenon gas discharge bulb or an LED diode, visit a
specialist garage.WARNING■ Always read and observe the warnings before completing any work in the
engine compartment » page 252.■
Accidents can be caused if the road in front of the vehicle is not suffi-
ciently illuminated and the vehicle cannot or can only be seen with difficul-
ty by other road users.
■
Bulbs H7 H8 and H15 are pressurised and may burst when changing the
bulb - risk of injury! We therefore recommended wearing gloves and safety
glasses when changing a bulb.
■
Do not carry out any work on the Xenon gas discharge lamps - risk of
death!
CAUTION
Do not take hold of the glass bulb with naked fingers (even the smallest
amount of dirt reduces the working life of the light bulb). Use a clean cloth,
napkin, or similar.
Note
■ This Owner's Manual only describes the replacement of bulbs where it is pos-
sible to replace the bulbs on your own without any complications arising. Other
bulbs must be replaced by a specialist garage.■
We recommend that a box of replacement bulbs always be carried in the ve-
hicle.
282Do-it-yourself