air condition VOLKSWAGEN TRANSPORTER 2012 Owner's Guide

Function and control
Fig. 253 In the stowage compartment on the front passenger side: button for the tyre monitoring sys-tem.
l"'"""f'n First read and observe the Introductory l.-J,.:,LL Information and safety warnings & on page 318.
The tyre monitoring system uses data from the ASS sensors and other functions to check the speed of rotation and the rolling circumference of the individual wheels. The rolling circumference of the wheels changes, if the tyre pressure is too low. This is then shown by the tyre monitoring sys-tem ill in the instrument cluster.
The operation of the tyre monitoring system is im-paired:
• If the tyre pressure has been changed manual-ly.
• If the tyre has structural damage.
• If the vehicle Is loaded more heavily on one side.
• If the wheels on one axle are loaded more heavily, e.g. high load level.
• If snow chains have been fitted.
• If one wheel per axle has been changed.
• When driving with a heavy trailer attached.
• If you are driving under winter conditions or on unsurfaced roads.
• When driving fast with hard acceleration and braking manoeuvres.
Synchronising the tyre monitoring system
The tyre monitoring system will have to be re-synchronised after changing the tyre pressure, or after changing one or more wheels. This also ap-plies for changing the wheels, e.g. from the front to the rear, and for changing from summer tyres to winter tyres.
The saved values must be reset before the system can be resynchronised.
• Switch on the ignition, and while the vehicle is stationary
• Press and hold the =>Fig. 253 button until an acoustic confirmation signal is emitted.
• OR: with some vehicle equipment options, you can open menu option Tyre pressure in the in-strument cluster display and save the new tyre pressures there =>page 24.
Once the saved values have been reset, the sys-tem calibrates itself independently to the fitted tyres and the tyre pressures filled by the driver dur-ing normal vehicle operation. The calibrated values are adopted and monitored after a long journey at various speeds.
If the wheels are loaded more heavily than normal, e.g. if the vehicle is carrying heavy payload, the tyre pressure must be raised to the recommended full-load tyre pressure before synchronisation =>page 367.
m The tyre monitoring system stops working if l!.J there is a fault in the ESC or ASS =>page 269.
m When using snow chains, an incorrect dis-l!.J play may be shown as the snow chains in-crease the tyre circumference =>page 367. Driver assist systems I 321

Air conditioning system
Heating, ventilating, cooling
o:n Introduction
This chapter contains information on the following subjects:
Controls for Climatic . . . . . . . . . . . . . . . . . . . . 323
Controls for Climatronic . . . . . . . . . . . . . . . . . 325
Controls for the heating and fresh air system . 327
Information on the air conditioning system . . . 328
..................... m
Air recirculation mode . . . . . . . • . . . . . . . . . . . . 330
Windscreen heating . . . . . . . . . . . . . . . . . . . . . 331
Roof ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Displays for the Climatronic information
Depending on the vehicle equipment level, infor-mation on the Climatronic is displayed briefly on the screen of the factory-fitted radio or navigation system.
The dust and pollen filter
The dust and pollen filter with activated charcoal reduces the level of impurities in the outside air en-tering the vehicle.
The dust and pollen filler must be changed regular-ly to avoid impairing the performance of the air conditioning system.
The dust and pollen filter must be changed more frequently than stated in the service schedule if the efficiency of the filter declines prematurely due to the vehicle being used in areas with high levels of air pollution.
Additional information and warnings:
• Exterior views 5
• Wipers/washer 116
• Supplementary heaters (auxiliary air heater or auxiliary coolant heater) 332
• Cleaning and caring for the vehicle exterior 380
A WARNING
Poor visibility through all windows increases the risk of collisions and accidents, which can cause serious injuries.
• Always ensure that all windows are free of ice, snow and mist to ensure good visibility.
3221 While driving
A WARNING (Continued)
• Maximum heat output, which Is needed to defrost the windows as quickly as possible, is only available when the engine has reached Its operating temperature. Do not start your journey until you have good visibil-Ity.
• Always ensure that the heating and fresh air system or the air conditioning system and the rear window heating are used correctly so that you have good visibility.
• Never use the air reclrculatlon mode for an extended period. If the cooling system Is switched off, the windows can mist up very quickly In air reclrculatlon mode and reduce visibility considerably.
• Always switch off the air reclrculatlon mode when it Is not required.
A WARNING
Stale air can quickly make the driver tired and affect their concentration, which In turn can cause collisions, accidents and serious Inju-ries.
• Never switch off the blowers or switch on the air recirculatlon mode for an extended pe· riod as this prevents fresh air from entering the vehicle interior.
• Switch off the air conditioning system if you suspect that it has been damaged. This can help to prevent secondary damage. The air conditioning system should be checked by a qualified workshop.
• Repairs to the air conditioning system re-quire specialist knowledge and special tools. Volkswagen Commercial Vehicles recommends using a Volkswagen Commercial Vehicles deal-ership for this purpose.
• Do not insert any objects in the slots of the air outlets. This could cause damage to the air outlets.

m If the cooling system is switched off. the out-W side air that is drawn into the vehicle is not dehumidified. To prevent the windows misting over, Volkswagen Commercial Vehicles recommends that you leave the air conditioning (air conditioning co'!!E.'"essor) switched on. To do this, press the @ button. The indicator lamp in the button must light up.
m Maximum heat output, which is needed to de-W frost the windows as quickly as possible, is only available when the engine has reached its op-erating temperature.
Controls for Climatic
Fig. 254 In the centre console: Climatic controls
m Keep the air intake slots in front of the wind-W screen free of snow, ice and leaves to ensure heating and cooling is not impaired, and to prevent the windows from misting over. !en-o191
Fig. 255 In headliner of the passenger Climatic controls for the passenger compartment. In the centre console [ID: controls of the heating and fresh air system for the passenger compartment.
ill1 First read and observe the Introductory l..-Wl information and safety warnings & on page 322.
Press the corresponding button to switch a func-tion on or off. Press the button again to switch the function off.
Illuminated LE Os in the controls indicate whether a particular function is active. .,.
Air conditioning system I 323

: "'
Controls for Climatronic
Fig. 256 In the centre console: Climatronic controls.
l"'"l'"'n First read and observe the introductory l.-Jo:.l.l Information and safety warnings & on page 322.
Press the corresponding button to switch a func-tion on or off. Press the button again to switch the function off.
Illuminated LEDs in the controls indicate whether a particular function is active.
Fig. 257 In the passenger compartment headlin-er: controls for Climatronic
Button, control
G)
•••••
® #
@
MAX@
Additional information. Climatronic =>Fig. 256 and =>Fig. 257.
Temperature. Front: left and right-hand side separately adjustable Turn the regulator to set the tempera-ture as required. The temperature setting is shown on the display on the left or right. Rear: press a button to set the temperature as required. The temperature setting is shown on the display.
Blower. The strength of the blower is regulated automatically. Turn the control or push the buttons to set the blower manually.
Air distribution. The airflow is set to be comfortable automatically. lt can also be set manually using the but-tons.
De-frost function. The air drawn in from outside the vehicle is directed at the windscreen and the air recirculation mode is switched off automatically. In order to demist the windscreen as quickly as possible, the air will be dehumidified at temperatures above about +1.5"C (+35°F) and the blower will be set to a high speed.
Air distribution to the windscreen.
Air conditioning system 325

Button, Additional information. Climatronlc 256 and 257. control
.. 0 Air distribution on the upper body via the air vents in the dash panel or in the headliner in ;;;o the passenger compartment.
!J Air distribution to the footwetl.
tTIJ Passenger compartment: air distribution to the side windows.
dlrlb compartment: defogging the side windows. Press button RWI and then button to activate the function from the front.
Automatic air recirculation mode 330.
w Windscreen heating: only functions when the engine is running and switches off automati-cally after approximately 10 minutes.
qw Rear window heating: only functions when the engine is running and switches off automati-cally after approximately 10 minutes.
Automatic temperature, blower and air distribution control. Press the button: the AUTO High function (high blower output) is switched on. The right-AUTO hand indicator lamp in the button lights up. Press the button again: the AUTO Low function (low blower output) is switched on. The left-hand indicator lamp in the button lights up.
A/C Press the button to switch the cooling system on or off.
Press the button to achieve maximum cooling. The air recirculation mode and cooling sys-tern are switched on automatically, and air distribution is automatically set to position ;D.
Switch off. Press the OFF button@ or manually set the blower to 0. An indicator lamp in the@) button lights up when the system is switched off.
Press the button to readjust the air conditioning settings for the rear seats. The displays REAR then show the settings for the rear seats. Press the button again or do not press any button for approximately 10 seconds in order to switch the function off.
Use residual heat. If the ignition is switched off and the engine is warm, the residual heat
REST from the engine is used to continue to heat the vehicle interior. The function switches off at-ter 30 minutes or when capacity is low. Press button@!] and then button RWI to use the residual warmth in the passenger compartment.
the driver-side temperature settings to all seats: if the indicator lamp in the button is lit up, the driver-side temperature settings also apply to the other seats. Press SYNC the button or activate the temperature regulator for the passenger side or the rear seats to set different temperatures for the passenger side and the rear seats. The indicator lamp in the button is not lit up.
A wARNING A WARNING (Continued)
Stale air can quickly make the driver tired and affect their concentration, which in turn can cause collisions, accidents and serious inju-ries.
326 I While driving
• Never switch off the blowers or switch on the air recirculatlon mode for an extended pe-riod as this prevents fresh air from entering the vehicle interior.

Controls for the heating and fresh air system
Fig. 258 In the centre console: controls for the heating and fresh air system.
r1"'n First read and observe the introductory information and safety warnings & on page 322.
Fig. 259 In the centre console: controls of the heating and fresh air system for the passenger compartment
Button, Additional information. Heating and fresh air system =>Fig. 258 and =>Fig. 259. control
CD Temperature .
••••• Turn the regulator to set the temperature as required.
® Blower. Setting 0: blower and fresh air system are switched off. 0 .•• # Setting 4: maximum blower setting.
@o Air recirculation mode =>page 330.
@) Air distribution. Turn the control to direct the airflow exactly as required.
® Air distribution to the windscreen. In this position, the air recirculation mode is switched off automatically, or not switched on at all .
.. 0 ;;tJ Air distribution to the upper body via the air vents in the dash panel.
}:0 Air distribution to the footwell.
qw. •;;!) Air distribution to the windscreen and the footwell.
Switch off. Turn the blower switch to setting 0.
Air conditioning system 327

Settings for optimal road visibility
• Switch off air recirculation mode 330.
• Set blower® to level 1 or 2.
• Set the temperature selector G) to the required position.
• Open and position all vents on the dash panel.
• Turn the air distribution Fig. 258 0 to the desired position.
Rear window heating
A button for the rear window heating @ may be contained in the dash panel.
• When the engine is running, press the @ but-ton to switch on the rear window heating.
• The rear window heating is switched off auto-matically after approx. 10 minutes. To switch it off before the automatic switch-off, press the(!) but-ton again.
A WARNING
Stale air can quickly make the driver tired and affect their concentration, which in turn can cause collisions, accidents and serious inju-ries.
• Never switch off the blowers or switch on the air recirculatlon mode for an extended pe-riod as this prevents fresh air from entering the vehicle Interior. Information on the air conditioning system
.........r'n First read and observe the Introductory L-.lr:.ll Information and safety warnings & on page 322.
The cooling system for the vehicle interior only works when the engine is running and the blower is switched on.
The air conditioning system operates most effec-tively with the windows and the sliding/tilting roof closed. However, if the vehicle has heated up after standing in the sun for some time, the air inside can be cooled more quickly by opening the win-dows and the sliding/tilting roof for a short time.
Settings for optimal road visibility
Switching the cooling system on not only reduces the temperature of the vehicle interior, but also the humidity. This improves comfort for the vehicle oc-cupants and prevents the windows from misting when the outside humidity is high.
Climatic
• Switch off air recirculation mode 330.
• Set the blowers to the required level.
• Set the temperature to +22•c (+72.F).
• Open and position all vents on the dash panel 329.
• Turn the air distribution controller to the desired position.
• Press the@) button to switch the cooling sys-tem on. The indicator lamp in the button lights up.
328 I While driving
Cllmatronlc
• Press button.
• Set the temperature to +22•c (+72.F).
• Open and position all vents on the dash panel 329.
The cooling system cannot be switched on
The following criteria may prevent the cooling sys-tem from being switched on:
• The engine is not running.
• The blower is switched off.
• The air conditioning system fuse has blown.
• The ambient temperature is lower than approxi-mately +3"C (+38°F).
• The compressor has been temporarily switched off because the coolant temperature is too high.
• There is a different fault in the vehicle. The air conditioning system should be checked by a quali-fied workshop.
Things to note
If the humidity and temperature outside the vehicle are high, condensation can drip off the evaporator in the cooling system and form a pool underneath the vehicle. This is normal and does not indicate a

m The windscreen may mist up after starting W the engine due to residual humidity in the air conditioning system. Switch the defrost function on in order to clear the windscreen of condensation or mist as quickly as possible. Vents
A
Fig. 260 Types of vents in the headliner
Fig. 261 Vent for the passenger compartment
1"'1'11 First read and observe the Introductory L-lo:.U information and safety warnings & on page 322.
Vents in the headliner
To ensure that the vehicle interior is sufficiently heated, ventilated and cooled, you should never fully close the vents.
• To open, press the panel with a ridge G).
• OR: turn thumb wheel@ to position 0.
IB
• To close, press the panel that is opposite the panel with the ridge @.
• OR: turn thumb wheel @to position e.
Indirect ventilation
Turn thumb wheel to position :-:.
There is no indirect ventilation in some countries. The vent is closed in position :-:.
CD
Do not place any food, medicine or any other temperature-sensitive items In front of the vents. Heat-sensitive food, medicine and other items could be either damaged or rendered useless.
m The air that comes out of the vents and flows W through the entire passenger compartment escapes from the vehicle through the ventilation openings in the side panels on the left and right. The ventilation slots must not be covered by items of clothing or other objects. Air conditioning system I 329

Air recirculation mode
.-r'n First read and observe the introductory information and safety warnings .1:!. on page 322.
General notes
There are different types of air recirculation mode:
Manual air recirculation mode (Heating and fresh air system).
Manual air recirculation mode (air condi-tioning system).
Left indicator lamp lit up in the button: manual air recirculation mode (Ciima-
------------Right indicator lamp lit up in the button: automatic air recircutation mode (Ciima-tronic).
The air recirculation mode prevents outside air from entering the vehicle.
if the outside temperature is very low or very high, the manual air recirculation mode should be selec-ted for a short time in order to heat or cool the ve-hicle interior more quickly.
For safety reasons, the air recirculation mode will switch off if the@ button is pressed, or if the air distribution regulator is switched to lliil => .1:!,.
Switching the manual air recirculation mode on and off .o I c:;;:,
Switching on: press button repeatedly until the indicator lamp in the button lights up.
Switching off. press@) button until the indi-cator lamp in the button is no longer lit up.
Switching the manual air recirculation mode on and off in the Climatronic e<>A
Switching on: press the button until the left in-dicator lamp in the button tights up.
Switching off. press the repeatedly until the indicator lamp in the button is no longer lit up.
Function of the automatic air recirculation mode e<>A
In position a>• fresh air will enter the vehicle interi-or. The air recirculation mode will switch on auto-matically if the system detects an increase in the
330 I While driving
concentration of noxious substances in the outside air. The air recirculation mode will switch off as soon as this level has returned to normal.
The system cannot detect unpleasant odours.
The air recirculation mode will not be switched on automatically in certain circumstances such as when the ambient temperature is low or the air conditioning system has been switched on.
Switching the automatic air recirculation mode on and off
Switching on: press button repeatedly until the right indicator lamp in the button lights up.
Switching off: press button repeatedly until the indicator lamp in the button is no longer lit up.
A WARNING
Stale air can quickly make the driver tired and affect their concentration, which In turn can cause collisions, accidents and serious inju-ries.
• Never use the air reclrculation mode for an extended period as no fresh air will enter the vehicle Interior.
• If the cooling system is switched off, the windows can mist up very quickly In air recir-culatlon mode and reduce visibility consider-ably.
• Always switch off the air reclrculation mode when it is not required.
CD
In vehicles with an air conditioning system, do not smoke when the air reclrculatlon mode Is switched on. The smoke drawn Into the cooling system can leave a residue on the evaporator and the dust and pollen filter with active carbon insert, producing a lasting unpleasant odour.
m Cllmatronic: when reversing the vehicle, or l!J when the wash and wipe system is being used, the air recirculation mode will switch on tem-porarily to prevent exhaust emissions from entering the vehicle interior.

Windscreen heating
1111 First read and observe the introductory L.-J,::.U information and safety warnings & on page 322.
Windscreen heating helps to de-ice the
windscreen and only works when the en-
gine is running.
Switching on and off
Press the button ®in the centre console or the Climatronic to switch the windscreen heating on and off.
Roof ventilator
BS0-000<
Fig. 262 On the dash panel: buttons for the roof ventilator
1111 First read and observe the introductory L.-J,::.U Information and safety warnings & on page 322.
Air extraction
• To switch on, switch the ventilation off, if on.
• Press the 0 262 button.
• To switch off, press button again.
Ventilation
• To switch on, switch the air extraction off. if on.
• Press the 0 button.
• To switch off, press button again.
The windscreen heating is switched off automati-cally depending on the outside temperature or after 10 minutes at the latest.
Switch-off conditions
The windscreen heating will switch off automatical-ly when one of the following conditions applies:
• After the engine is switched off.
• If the vehicle's connected load is too high as a result of too much electrical equipment being used at the same lime.
• Malfunctions in the air conditioning system.
• After the time specified has elapsed. Fig. 263 In the headliner: roof ventilator
Q)
At least one vent must be open if the air extrac-tion or ventilation Is switched on. The blower could otherwise be damaged.
ffi Using electrical appliances with the engine L!J off, ignition switched on or off and the roof ventilator switched on will drain the battery. Air conditioning system 331