roof VOLKSWAGEN TRANSPORTER 2018 Repair Manual

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

Supplementary heaters (auxiliary air heater or auxiliary
coolant heater)
[Q] Introduction
This chapter contains information on the following subjects:
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Switching the supplementary heating system on and off . . . . . . . . . . . . . . . . . . . . . . . . 334
Remote control . . . . . . . . . . . . . . . . . 335
Programming the supplementary heating system . . . . . . . . . . . . . . . . . . . . . . 338 Switching the child proof lock on and off . . . . . 339
Operation . . . . . . . . . . . . . . . . . . . . . . . . 339
The supplementary heating system is supplied with fuel from the vehicle fuel tank and can be used when the vehicle is in motion or stationary. Electri-cal power is supplied by the vehicle battery.
The auxiliary air heater runs in air recirculation mode and heats the vehicle interior. it has sepa-rate vents in the passenger compartment =>Fig. 265.
The auxiliary coolant heater heats the heating circuit. Heat is guided into the vehicle interior via the vents for the heating or air conditioning system. With the auxiliary coolant heater, it is possible to switch between heating and ventilating.
Additional information and warnings:
• Supplementary heater in the California =>page 192
• Filling the tank =>page 340
• Battery =>page 362
Swallowing batteries with a diameter of 20 mm or other lithium batteries can result in severe or even fatal injuries within a very short period of time.
• Always keep the vehicle key, key ring with batteries, spare batteries, round cells and other batteries that are larger than 20 mm out of the reach of children.
332 I While driving
• Call for medical help immediately you pect that someone has swallowed a batte
A WARNING
The fumes from the supplementary heating system contain carbon monoxide, which is an odourless and colourless poisonous gas. Carbon monoxide can cause people to lose consciousness. lt can also cause death.
• Never start or run the supplementary heat-ing system In unventllated or closed rooms.
• Never program the supplementary heating system so that Is switched on and run In un-ventilated or enclosed areas.
A WARNING
Parts of the exhaust system of the supple-mentary heating system become very hot. This can cause fires.
• Park the vehicle so that no part of the ex-haust system can come Into contact with any Inflammable material underneath the vehicle, e.g. dry grass.
Q)
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 After starting the engine with a discharged W vehicle battery, or after the battery has been changed, system settings (time, date, personal convenience settings and programming) may have been changed or deleted. Check and correct the settings as necessary once the vehicle battery has been sufficiently charged.

Controls
Fig. 264 In the headliner: controls of the supplementary heating system
I""""T'n First read and observe the introductory l.-..1=.1.1 infonmatlon and safety warnings & on page 332.
In vehicles with camping equipment (California), the supplementary heater is controlled via the cen-tral control panel 192.
Each button has its own assigned function (letter-ing) as well as a function for the menu (symbol in the display next to the button)
Fig. 265 In the passenger compartment: vent for auxiliary air heater.
264
G) ON/Off
® Display
@ TMR
@ S£T
® MODE
Function
Switch supplementary heating system on and off. Menu-dependent function button: ......_ Setting within a menu.
Multifunction display 1-3 (3): displays the programmed start times. ro: Continuous mode (only auxiliary air heater). Jli: Heating (auxiliary air heater and auxiliary coolant heater). Ventilation (only auxiliary coolant heater).
Set and display start time. Menu-dependent function button: Close the menu.
®Activate the child proof lock. Open the menu 338. Menu-dependent function button: OK Confirm settings.
Auxiliary air heater: setting the heating level. Auxiliary coolant heater: Switch from heating to ventilation. Menu-dependent function button: ...,. Setting within a menu.
Air conditioning system I 333

Switching the supplementary heating system on and off
r-Y'n First read and observe the introductory L-J.:.I.I information and safety warnings & on page 332.
In vehicles with camping equipment (California), the supplementary heater is controlled via the cen-tral control panel =>page 192.
Switching on the supplementary heating sys-tem:
Manually with button [011/0IF) in the roof dis-ON/OFF play.
l/i Manually with the remote control key.
Automatically with a programmed and ac-tivated switch-on time.
Switching off the supplementary heating sys-tem:
ON/OFF Manually with the function button =>Fig. 264 CD in the roof display.
Off Manually with the remote control key.
Automatically after the set operating dura-tion has elapsed.
Only if the vehicle has an auxiliary coolant heater Automatically when the indicator lamp lights (fuel gauge) =>page 340.
Automatically if the charge level of the ad-ditional battery is too low =>page 362.
Setting the operating duration (when the ignition is switched off)
The default setting for the operating duration is 30 minutes. You can set the operating duration be-tween 10 and 120 minutes.
• Press any button on the roof display to activate the roof display.
• Only if the vehicle has an auxiliary coolant heater: Press the button to set the operating mode.
• Press the@ button.
• Press the button@) to set the operating dura-tion.
334 I While driv1ng
• Press the function button ....,. or T until the re-quired operating duration is displayed.
• Press button@) again to confirm the operating duration.
• Only for auxiliary air heater: press the func-tion button ....,. or ... as often as necessary until the desired heating level is displayed.
The supplementary heating system has been switched on. The operatin_lLduration is counted backwards. Press to switch off the sup-plementary heating system prematurely.
Continuous mode eo (only for auxiliary air heater, with the ignition switched off)
Press any button on the roof display to activate the roof display.
Press the@) button.
Press the @) button.
Press the function button ....,. or ... as often as nec-essary until Heating eo is displayed.
Press button @)to confirm the setting.
Press the function button ....,. or T as often as nec-essary until the required temperature level is dis-played.
Press button @)again to confirm the temperature.
Things to note
The supplementary heating system runs on for a short time after it is switched off in order to cool the heating unit (switch-off delay). The exhaust gases in the system can also be emitted.
Switch-off delay for the auxiliary heater
If the ignition is switched off while the auxiliary wa-ter heater is on, the selected function continues being performed for a maximum of 10 minutes. The set switch-off delay is shown on the display.
Each time button is pressed, the switch-off delay is reduced by one minute.

Action Indicator lamp Fig. 267
Attempt to switch on: lights up orange for approximately Attempt to switch on or off using button @ or@ when the battery in the remote con-trol is low. The auxiliary coolant heater is blocked bl.
2 seconds, then flashes green in very short intervals for an-other 2 seconds. The switch-on signal is not processed. Attempt to switch off: lights up orange for approximately 2 seconds, then turns red for another 2 seconds. The switch-off signal is not processed.
Attempt to switch on or off using button @ or@ when the battery in the remote con-trol is empty.
Flashes orange in very short intervals for approximately 5 seconds. The switch-on or switch-off signal is not pro-cessed.
•> If you are at the edge of the receiving range, the remote control may not be able to receive the confirmation signal from the sen-sor in the vehicle. If this is the case, the remote control will show a fault even though the supplementary heating system has ac-tually been switched on or off. Move closer to the vehicle and try pressing the corresponding button on the remote control again.
b) If the automatic switch-off for electrical consumers page 365 is activated or if the reserve level in lhe fuel tank page 340 has been reached, the auxiliary coolant heater may be blocked automatically.
Settings for remote control
The supplementary heating system is activated or deactivated by means of the remote control. The Start Time menu can be used to program the oper-ating duration and the heating level (auxiliary air heater) or the operating mode (auxiliary coolant heater).
• Press any button on the roof display to activate the roof display.
• Press and hold down the (ill) button for several seconds.
• Press the function button ...... or ,... as often as necessary until "REMOTE CONT." is displayed.
• Press the (ill) button to confirm.
• Press the function button ...... or ,... until the re-quired temperature or mode is displayed.
• Press the (ill) button to confirm the selected heating level or operating mode. The operating du-ration menu is displayed.
• Press the function button ...... or ,... until the re-quired operating duration is displayed.
• Press button @)to confirm the operating dura-tion. A summary of the settings is displayed.
Replacing the battery for the remote control
Auxiliary air heater: the battery is located on the back of the remote control underneath a cover 266 [ID. Pull off the cover® towards the rear.
Auxiliary coolant heater: the battery is located on the back of the remote control underneath a cover 267 [ID. Use a flat object, e.g. a coin, to turn the slot anti-clockwise in order to open the cover
®-
When changing the batteries, ensure you insert them the right way (poles) and that they are the same type
Range
The receiver is located in the vehicle interior. The remote control key has a range of several hundred metres when the battery is fully charged. The range of the remote control key can be considera-bly reduced by obstacles between the remote con-trol key and the vehicle, bad weather conditions, and a flat battery.
To achieve optimal range, hold the remote control vertically with the aerial 266 or 267 at the top. Do not hold the aer-ial with your fingers or the palm of your hand.
The distance between the remote control and the vehicle must be at least 2 metres.
CD
• The remote control contains electronic com-ponents. Protect the remote control from mois-ture, excessive vibration and direct sunlight.
• Unsuitable batteries can damage the remote control. Only replace discharged batteries with a new battery of the same voltage rating, size and specification.
Discharged batteries must be disposed of in W accordance with regulations governing the protection of the environment.
The battery in the remote control may contain W perchlorate. Please comply with legislation regarding disposal.
m Protect the remote control against inadver-L!.J tent operation in order to prevent the supple-mentary heater from being switched on uninten-
Air conditioning system I 337

Programming the supplementary heating system
r('n First read and observe the introductory L-Wl Information and safety warnings & on page 332.
In vehicles with camping equipment (California), the supplementary heater is programmed via the central control panel =>page 192.
Setting the date
Before being used for the first time and if the vehi-cle battery has been disconnected and reconnec-ted, the date needs to be set.
• Press any button on the roof display to activate the roof display.
• Press button @!) until the date is displayed.
• Press button @!) again. The day flashes.
• Press the function button .... or T until the re-quired day is displayed.
• Press button @!) again to confirm the day. The month flashes.
• Proceed in the same way for the month and the year.
Time
The time is automatically taken from the instrument cluster.
Setting the start time
You can programme up to three different start times. Only one of these can be activated at a time.
The following steps must be carried out in less than 10 seconds as the procedure will otherwise be stopped.
• Press any button on the roof display to activate the roof display.
• Press until OFF is displayed.
• Press the @) button, press function button .... or T as often as necessary until ON is displayed.
• Press the@) button to confirm.
• Press the function button .... or T until the re-quired temperature or mode is displayed.
• Press the @!) button to confirm.
• Press the function button .... or T as often as necessary until the start time to be switched on or off is displayed.
338 I While dnvmg
• Press the function button .... or T until the re-quired day of week is displayed. If a day is not dis-played, no day has been programmed, only a time. The supplementary heater will then be switched on at this programmed time.
• Press the @) button to confirm the selected day of the week. The hour menu is displayed.
• Proceed in the same way for the hour, for mi-nutes as well as the operating duration.
• Press the @) button to confirm the settings. A summary of the settings is displayed.
The start time for which the changes have been made has been activated. To activate additional start times, press and hold down for several seconds, select the start time with the func-tion buttons .... or T and then proceed as descri-bed above.
Deactivating the start time
If changes have been made for a start time, this start time still remains activated. To deactivate the start time, proceed as follows:
• Press any button on the roof display to activate the roof display.
• Push and hold down button for several seconds, then press the@) button until an active start time that is to be deactivated is displayed.
• Press the function button .... or T as often as necessary until OFF is displayed.
• Press the @) button to confirm.
The start time has now been deactivated and is no longer shown on the roof display.
A WARNING
Never program the supplementary heating system so that Is switched on and run In un-ventllated or enclosed areas. The fumes from the supplementary heating system contain carbon monoxide, which Is an odourless and colourless poisonous gas. Carbon monoxide can cause people to lose consciousness. lt can also cause death.

Switching the childproof lock on and off
B7f·0201
Fig. 268 On the roof display: symbol for switched-on child proof lock
r-T'n First read and observe the introductory L-.bU information and safety warnings & on page 332.
Activating the childproof lock
• Press any button on the roof display to activate the roof display.
• Press and hold down the @) button for several seconds.
• Press the function button .... or ..-until CHILD-PROOF LOCK is displayed.
• Press the@) button.
Operation
r-T'n First read and observe the introductory L-.bU information and safety warnings & on page 332.
The supplementary heating exhaust system, loca-ted under the vehicle, must not be blocked by snow, mud or other items. The exhaust fumes must not be obstructed in any way. The emissions gen-erated by the supplementary heating system are removed via an exhaust pipe fitted underneath the vehicle.
If the charge level of the additional battery is low, the supplementary heating system will switch off automatically or cannot be switched on.
m Operating noises can be heard if the supple-l!J mentary heating system is switched on.
• Press the function button .... until ON is dis-played, in order to switch child proof lock on. The display will show this symbol =>Fig. 268.
• Press the @] button to confirm.
Deactivating the childproof lock
• Switch on the ignition.
• Press and hold down the@] button for several seconds.
• Press the function button....._ or..-until CHILD-PROOF LOCK is displayed.
• Press the@) button.
• Press the function button .... until OFF is dis-played. in order to switch child proof lock off.
• Press the@) button to confirm. The =>Fig. 268 symbol on the display goes out.
If the child proof lock has been switched on and the ignition has been switched off, it is not possible to switch the supplementary heating system on man-ually.
lt is still possible to switch off the supplementary heating system manually. m At high levels of humidity and low tempera-l!J lures outside the vehicle, condensation from the heating system can evaporate through the ex-haust system when the supplementary heater is operating. If this is the case, steam may appear underneath the vehicle. The vehicle is not dam-aged.
r::l The charge of the additional battery will be W reduced if the supplementary water heater is operated several times over an extended period of time. Drive the vehicle for a sufficient length of time to recharge the additional battery. As a rule of thumb, drive the vehicle for the length of time you ran the system. Air conditioning system I 339

Automatic switch-off for electrical consumers
The intelligent vehicle electrical system automati-cally implements a range of measures to prevent the battery from discharging under high loads:
• The idling speed is increased so that the alter-nator provides more electricity.
• The performance of large electrical consumers may be reduced or they may be switched off com-pletely.
• The supply of electricity to the 12-volt sockets and the cigarette lighter is interrupted temporarily while the engine is being started.
The vehicle electrical system cannot always pre-vent the vehicle battery from discharging. For ex-ample, if the ignition is left on for an extended peri-od of time with the engine off, or if the parking light is left on when the vehicle is parked for an exten-ded period.
What can cause the vehicle battery to discharge?
• Long periods at a standstill in which the engine is not running, especially if the ignition is switched on.
• The use of electrical consumers when the en-gine is switched off.
• When the supplementary heater is in operation =>page 332.
A WARNING
Incorrectly attaching the battery and using In-correct vehicle batteries can cause short cir-cuits, fire and serious Injuries.
366 I Cleaning and maintenance
A WARNING (Continued)
• Always use maintenance-free and leak-proof batteries that have the same properties, specifications and dimensions as the factory-fitted vehicle battery.
A WARNING
A highly explosive mixture of gases Is given off when the vehicle battery is being charged.
• Vehicle batteries should only be charged in well-ventilated spaces.
• Never charge a vehicle battery once it has been frozen. Discharged vehicle batteries can even freeze at temperatures of around o•c (+32.FJ.
• The vehicle battery has to be replaced if it has ever been frozen.
• Incorrectly connected cables can cause a short circuit. First connect the positive cable and then the negative cable.
CD
• Never make or break connections between vehicle batteries if the ignition is switched on or the engine is running. Never use a vehicle battery that does not correspond with the vehi-cle's specifications. The vehicle's electrical system or electronic components could be damaged, which could lead to electrical faults, for example In the start/stop system.
• Never connect equipment that provides electricity, such as solar panels or a battery charger, to the 12-volt socket or to the cigarette lighter to charge the vehicle battery. This can damage the vehicle electrical system.
Dispose of the vehicle baltery as required by legislation. Batteries may contain toxic sub-stances such as sulphuric acid and lead.
Electrolyte can pollute the environment. Clean up any service fluid leakages and dis-pose of them property.

Washing the vehicle
r-f'n First read and observe the introductory Information and safety warnings & on page 380.
The longer substances such as insects, bird drop-pings, resinous tree sap, road dirt, industrial de-posits, tar, soot or road salt and other corrosive materials remain on the vehicle, the more damage they do to the paintwork. High temperatures (for in-stance in strong sunlight) accelerate the corrosion process. The underside of the vehicle should also be cleaned thoroughly and regularly.
Car washes
Please observe the signs on the automatic car wash. Before using an automatic car wash take the usual precautions, such as closing all windows and folding in the exterior mirrors, in order to avoid damage to the vehicle. You must consult the car wash operator if there are special parts on your ve-hicle such as spoilers, roof luggage carrier systems or radio aerials ::.CD.
The paint is so hard-wearing that the car can nor-mally be washed without problems in an automatic car wash. However, the effect on the paint de-pends to a large extent on the design of the car wash. Volkswagen Commercial Vehicles recom-mends the use of car washes without brushes.
To remove any wax residue from the windows and to stop wipers rubbing, please note the following points ::.page 382, Cleaning windows and exterior mirrors.
Washing the car by hand
When washing by hand, first soften the dirt with plenty of water and rinse off as well as possible.
Then clean the vehicle with a soft sponge, a glove or a brush using only light pressure. Start with the roof and work from the top to the bottom. Use a shampoo for very stubborn dirt only.
The sponge or glove should be wrung out thor-oughly at regular intervals.
Clean the wheels, sill panels etc. last. Use a differ-ent sponge for this purpose.
A WARNING
Parts of the vehicle with sharp edges can cause Injury.
• Protect your hands and arms from cuts on sharp parts, for example when cleaning the underbody or the inside of the wheel hous-lngs.
A WARNING
After the car has been washed, the braking effect could set in later than normal and ex-tend the braking distance as the brake discs and brake pads will be wet, or iced up In win-ter.
• You can "dry and de-ice" the brakes by performing careful braking manoeuvres. Make sure that you do not endanger any oth-er road users or violate any legal regulations when doing so.
CD
• The water should be no warmer than +so•c (+140.FJ.
• Do not wash the vehicle in direct sunlight in order to avoid damage to the vehicle palntwork.
• Never clean with insect sponges, rough kitchen sponges or similar products as these can damage the surface.
• Never clean the headlights with a dry cloth or sponge. Always use a wet cloth or sponge. lt is best to use soapy water.
• Washing the vehicle In cold weather: if the vehicle is rinsed with a hose, do not direct the water at the lock cylinders or the gaps around the doors, boot, or bonnet. The locks and seals could freeze.
CD
Observe the following guidelines before driving the vehicle into an automatic car wash in order to avoid damage to the vehicle:
• Ensure that the gap between the guide rails In the car wash is sufficient for the vehicle track. If the track is too narrow your wheels and tyres will be damaged.
• Switch off the rain sensor before driving the vehicle Into an automatic car wash.
• Check that the car wash is tall and wide enough for your vehicle.
• Fold In the exterior mirrors. Electrically fold-Ing exterior mirrors must be moved electrically. Do not fold them in and out by hand.
• In order to prevent damage to the palntwork on the bonnet, fold the wipers back onto the windscreen after drying the wiper blades. Do not drop the wipers onto the glass.
• Lock the tailgate to prevent it from opening accidentally In the car wash. Vehicle care and maintenance 381

If and when
Practical tips
Frequently asked questions
If you suspect that a vehicle fault has arisen or your vehicle has been damaged, read and observe the following information before contacting a Volkswagen Commercial Vehicles dealership or
qualified workshop. You may also find useful infor-mation in the index under the headings "Things to note" or "Checklist".
To note Some possible causes Possible solution
Vehicle battery is discharged. -How to jump start =>page 443. -Recharge vehicle battery 362.
Engine does not start. The incorrect vehicle key is be-Use a valid vehicle key 36. ing used.
Fuel level is too low. Fill the tank 340.
Supplementary heating system Switch off the supplementary heating
Smoke is coming from the is running. system 332. wing. Supplementary heater is run-No solution 345. ning.
-Battery in the remote control -Replace the battery 36. Vehicle cannot be locked or key is flat. -Move closer to the vehicle. unlocked with the remote -Located too far away from the -Synchronise the vehicle key =>page 36. vehicle. control key. -Buttons were pressed outside -Lock or unlock the vehicle manually
the range. 413.
Cold engine. brake assist sys-Refer to the index under entries for Unusual noises. tems, supplementary heating "Noises". system.
Assist systems are active. Refer to the index under entries for "As-sist systems". Unusual handling. DSG® dual clutch gearbox is too Stop the vehicle immediately hot. 266.
Front seats cannot be ad-Vehicle battery is discharged. Recharge vehicle battery 362.
justed electrically. Fuse blown. Check fuse and replace as necessary 429.
The vehicle has no vehicle No direct solutions possible as it depends
jack, spare wheel or break-Equipment depends on type of on the equipment level. Contact a Volks-vehicle. wagen Commercial Vehicles dealership if down set. necessary 416.
-Windows or sliding roof are open. The interior monitoring sys--Item attached to the interior Remove any objects that could trigger a tem triggers a false alarm. mirror is moving. false alarm 44. -A mobile telephone is vibrating inside the vehicle.
Functions are not working Settings have been made in the Check and if necessary reset back to fac-as described in the owner's manual. Volkswagen information system. tory settings 24.
410 I If and when