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.
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.
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 :-:.
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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.
A WARNING (Continued)
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-Please ensure that the spare fuel can is· ter corresponds with the Industry stand· ard, for example AN SI or ASTM F852-86.
• Remove split fuel from all vehicle compo· nents as quickly as possible In order to avoid damage to the wheel housing, tyres and vehicle paint.
• • Filling up with petrol in a vehicle fitted with a diesel engine or refilling with diesel in vehicle equipped with a petrol engine can cause seri· ous ands expensive engine damage and dam· age to the fuel system that is not covered by
Indicator lamps and fuel gauge
Fig. 269 In the instrument cluster: fuel gauge for petrol and diesel.
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any Volkswagen Commercial Vehicles guaran· tee. Do not start the engine under any circum-stances if you have refilled using the Incorrect fuel. Seek expert assistance. The substances In these fuels can cause serious damage to the fuel system and to the engine itself if it Is switched on.
• Vehicles with a diesel engine should under no circumstances be filled and driven with pet· rol, kerosene, heating oil or any other fuels that have not been expressly approved for diesel engines. Other fuels could cause extensive and expensive engine damage and damage to the fuel system which will not be covered by any Volkswagen Commercial Vehicles guarantee.
r.:Gh Fuels can pollute the environment. Any spilt W service fluids must be cleaned up and dis· posed of properly.
Lit up Needle position Possible cause & Solution 269
b Red marking (arrow) Fuel tank almost empty. Fill the tank as soon as possible Reserve is used up 343.
Several warning and indicator lamps will light up briefly as a functional check when the ignition is switched on. They will go out after a few seconds.
When the Indicator lamp Blllghts up, the supple-mentary heating system and fuel-powered supple-mentary heater switch off automatically.
A WARNING
Driving the vehicle when the fuel level is too low could lead to your vehicle breaking down In traffic, accidents and serious injuries.
• When the fuel level is too low, the fuel supply to the engine could be Irregular, espe-cially when driving up or down hills and in-clines. .,..
At the filling station 341
A WARNING_tContlnued)
• The power steering, all driver assist sys-tems and brake assist systems will not func-tion if the engine "sputters" or stops com-pletely due to a lack of fuel or Irregular fuel supply.
• Always fill the tank when it is stlll1/4 full. This reduces the risk of running out of fuel and breaking down.
Filling the tank with petrol or diesel
Fig. 270 Opened front door and open tank flap with tank cap attached to the holder
r--f"'n First read and observe the introductory L-.1=.1.1 information and safety warnings & on page 340.
Switch off the engine, ignilion. mobile lelephone and supplementary heating system before refuel-ling and leave them switched off during refilling.
Opening the tank cap
• Open left-hand front door.
• Open the lank flap.
• Turn the tank cap anticlockwise to remove it and place it in the provided retainer 270.
Filling the tank
The correct fuel grade for your vehicle is shown on a sticker on the inside of the tank flap 343.
While driv111g
Q)
• To avoid damage to your vehicle, always ob-serve the indicator lamps and associated warn-ing texts.
• Do not run the tank empty. Irregular filling periods can cause backfiring and allow unburnt fuel to enter the exhaust system. The catalytic converter or diesel partlculate filter could be damaged as a result!
m The small arrow next to the petrol pump sym-L!J bol 269 shows you which side of the vehicle the tank flap is located on.
• The fuel tank is full when the (properly operat-ed) automatic filler nozzle clicks off for the first time
• Do not continue filling the tank after it switches off. The expansion space in the fuel tank will other-wise fill up and the fuel could spill out. This could also happen when the fuel warms up and expands.
Closing the tank cap
• Turn the tank cap clockwise into the fuel filler neck until it perceptibly engages.
• Close the tank flap so that it engages audibly. The tank flap must be flush with the vehicle body-work.
• Close left-hand front door.
A WARNING
Do not continue filling the tank once the filler nozzle stops automatically. The fuel tank could be overfilled. This can cause fuel to splash out and overflow. This can cause fires, explosions and serious Injuries.
Q)
Remove spilt fuel from the vehicle paint as quickly as possible in order to avoid damage to the wheel housing, tyres and vehicle paint.
Spilt fuel can pollute lhe environment.
Cleaning and maintenance
In the engine compartment
Preparation for working in the engine compartment
ClJ Introduction
This chapter contains information on the following subjects:
Preparing the vehicle for working in the engine compartment . . . . . . . . . . . . . . . . . 352 Opening and closing the bonnet 352
Always park the vehicle on a level and stable sur-face before carrying out any work in the engine compartment.
The engine compartment of a motor vehicle is a hazardous area. Never carry out any work on the engine or in the engine compartment if you are not familiar with the requisite procedures and general safety requirements, or if you only have access to incorrect operating equipment, service fluids, and unsuitable tools &. The work should be carried out by a qualified workshop if you are uncertain. Serious injuries can be caused if work is carried out incorrectly.
Additional information and warnings:
• Exterior views 5
• Wipers/washer 116
• Starting and stopping the engine 257
• Brake fluid 269
• Pull-away assist systems (starUstop system) 282
• Checks when filling the tank 340
• Engine oil 353
• Engine coolant 358
• Battery page 362
• Accessories, modifications, repairs and renewal of parts 394
A wARNING
Unintentional vehicle movements during service work can cause serious injury.
• Never work underneath a vehicle if it is not secured against rolling away. If you are working underneath the vehicle while the wheels are on the ground, the vehicle must
350 I Cleanmg and maintenance
A WARNING (Continued)
be on a level, the wheels must be blocked and the vehicle key must be removed from the ignition lock.
• If you have to work underneath the vehi-cle, use suitable stands to provide extra sup-port for the vehicle. The vehicle jack is not sufficient for this task and can fail, which can lead to serious injuries.
• The start/stop system must have been de-activated.
A WARNING
The engine compartment of any motor vehi-cle is a dangerous area. Serious injuries can be sustained here.
• The utmost care and attention must be paid when carrying out any work and you must follow the general safety rules. Never take any risks.
• Never do any work on the engine or in the engine compartment unless you know exact-ly how to carry it out. If you are uncertain of what to do, the work should be carried out by a qualified workshop. Serious Injuries can re-sult from work that has not been carried out properly.
• Never open the bonnet if you see steam or coolant escaping from the engine compart-ment. Hot steam or coolant can cause seri-ous burns. Always wait until you can no lon-ger see or hear steam or coolant coming from the engine compartment.
• Always allow the engine to cool down be-fore opening the bonnet.
• Hot parts of the engine or exhaust system can burn the skin.
• The following points should be noted be-fore opening the bonnet once it has cooled down.
-Apply the handbrake fully and move the selector lever to position P or move the manual gear lever to the neutral position. .,..
Wheels and tyres
Useful information about wheels and tyres
o:::n Introduction
This chapter contains information on the following subjects:
Handling wheels and tyres .............. .
Rims
368
369
New wheels and tyres . . . . . . . . . . . . . . . . . . . 370 Tyre pressure . . . . . . . . . . . . . . . . 371
Tread depth and wear indicators 372 Tyre damage 373
Spare wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Tyre lettering . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
Winter tyres . . . . . . . . . . • . • • . . . . . . . . . . . . 378 Snow chains . . . . . . . . . . . . . . . . . 379
Volkswagen Commercial Vehicles recommends that work on tyres and wheels is carried out by a qualified workshop. They are familiar with the pro-cedure and have the necessary special tools and spare parts and the proper facilities for disposing of the old tyres. Volkswagen Commercial Vehicles recommends using a Volkswagen Commercial Ve-hicles dealership for this purpose.
Additional information and warnings:
• Transporting 125
• Towing a trailer 139
• Braking, stopping and parking 269
• Tyre monitoring system 318
• Cleaning and caring for the vehicle exterior 380
• Consumer information 404
• Vehicle tool kit 416
• Hubcaps 417
• Changing a wheel 420
• Breakdown set 425
A WARNING
New tyres or tyres which are old, worn down or damaged cannot provide full levels of vehi-cle control and braking power.
• Incorrect handling of wheels and tyres can reduce vehicle safety and cause accidents and serious injuries.
A WARNING (Continued)
• All four wheels must be fitted with radial tyres of the same type, size (rolling circum-ference) and the same tread.
• New tyres will have to be run In as they will initially have reduced grip and braking ef-fect. Drive particularly carefully for the first 600 km in order to prevent accidents and se-rious injury.
• Check tyre pressures regularly and always keep to the specified tyre pressure value. If the tyre pressure is too low, it Is possible that the tyre temperature will Increase to such an extent when driving that the tread peels off and the tyre bursts.
• Never drive with worn tyres or tyres that are damaged (cuts, cracks or blisters). Driv-Ing with tyres in this condition can result in blown tyres, accidents and serious Injuries. Worn or damaged tyres must be replaced as soon as possible.
• Never exceed the top speed and load per-mitted for the fitted tyres.
• The effectiveness of the driver assist sys-tems and brake support systems depends on the tyre grip.
• If you notice unusual vibration or if the ve-hicle pulls to one side when driving, stop the car immediately and check the wheels and tyres for damage.
• In order to reduce the risk of losing con-trol of the vehicle, and the risk of accident and serious injury, never loosen the bolts on rims with bolted on rim rings.
• Do not use wheels or tyres if you do not know their history. Used wheels and tyres could be damaged, even If the damage is not visible.
• Old tyres (even if never used) can sudden-ly Jose pressure or burst, especially at high speeds. This can cause accidents and seri-ous injuries. Avoid using tyres that are more than six years old. If you have no alternative, drive slowly and with extra care at all times.
m For technical reasons, it is not generally pos-L!.J sible to use the wheels from other vehicles. This can also apply to wheels of the same vehicle .,.
Wheels and tyres I 367
type. Refer to the vehicle documentation and ask a Volkswagen Commercial Vehicles dealership if necessary.
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... '5I'
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Fig. 280 How to swap wheels.
.....-r'n First read and observe the introductory L-W! Information and safety warnings & on page 367.
The tyres are the most used and most underesti-mated parts of a vehicle. Tyres are very important as the narrow tyre surfaces are the only contact between the vehicle and the road.
The service life of tyres is dependent on tyre pres-sure, driving style handling and fitting.
The tyres and wheel rims are an essential part of the vehicle's design. The tyres and rims approved by Volkswagen Commercial Vehicles are specially matched to the characteristics of the vehicle and make a major contribution to good road holding and safe handling.
Avoiding damage to the tyres
• If you have to drive over a kerb or similar obsta-cle, drive slowly and at a right angle if possible.
• Inspect the tyres regularly for damage such as cuts. cracks or blisters.
• Remove foreign objects that are in the outer tyre tread and have not penetrated the Inner tyre 373.
• Always respond to any warning messages giv-en by the tyre monitoring system=:opage 318.
• Damaged or worn tyres must be replaced im-mediately =:o page 373.
• Regularly check the tyres for hidden damage =:-page 373.
368 Cleaning and maintenance
• Never exceed the top speed and load permitted for the tyres that are fitted =:o page 375.
• Protect the wheels, including the spare wheel, from contact with corrosive substances, including oils, lubricants, fuel and brake fluid =:o &.
• Replace missing dust caps immediately.
Tyres with directional tread pattern
Tyres with directional tread pattern have been de-veloped to roll in one direction only. An arrow on the tyre sidewall indicates the direction of rotation on tyres with directional tread =:o page 375. The di-rection of rotation must be adhered to. This is the only guarantee for optimum grip and helps to avoid aquaplaning, excessive noise and wear.
If, however, the tyre is fitted in the opposite direc-tion to the tread pattern, you must take more care when driving as the tyre is now no longer being used according to its designation. This is particu-larly important on wet roads. The tyres must be re-placed as quickly as possible or be fitted with the tread in the correct direction.
Rotating wheels front to rear
Regularly rotating the wheels as shown in the illus-tration =:o Fig. 280 is recommended to help ensure that tyres wear evenly. All the tyres will then last for about the same time.
Volkswagen Commercial Vehicles recommends having the wheels changed by a qualified work-shop.
Tyres that are older than 6 years
Tyres age through physical and chemical process-es that can impair their function. Tyres that are stored unused for an extended period will harden and become brittle more quickly than tyres which are in constant use.
Volkswagen Commercial Vehicles recommends re-placing tyres that are more than 6 years old with new tyres. This also applies for tyres, including the spare wheel, which appear to still be in good con-dition and whose tread depth has not yet reached the minimum value stipulated by legislation =:o &.
The age of a tyre can be determined from the man-ufacturing date, which Is a component of the tyre identification number (TIN) =:o page 375. .,..
Storing tyres
Mark tyres before you remove them to indicate the direction of rotation. This ensures you will be able to mount them correctly when you replace them (left, right, front, rear). When removed, the wheels or tyres should be stored in a cool, dry and pref-erably dark place. Do not store tyres mounted on the rim vertically.
Any tyres not fitted on rims should be kept in suita-ble sleeves to protect against dirt and should be stored vertically (standing on the tread).
All-terrain tyres
Some vehicles can be fitted at the factory with "all-terrain tyres". These tyres have a deep-tread pro-file that alters the vehicle's driving properties (such as comfort, consumption, braking distance, corner-Ing behaviour, rolling noise)=>&.
A WARNING
Corrosive liquids and other substances can cause visible and Invisible damage to the tyres, which can cause the tyre to burst.
• Always keep chemicals, oils, lubricants, fuel, brake fluid and other corrosive substan-ces away from the tyres.
A WARNING
Old tyres (even if never used) can suddenly lose pressure or burst, especially at high speeds. This can cause accidents and seri-ous injuries.
• Avoid using tyres that are more than six years old. If you have no alternative, drive slowly and with extra care at all times.
Rims
,....-('n First read and observe the Introductory L-J.:.ll information and safety warnings & on page 367.
The design of the wheel bolts is matched to the rims. If different rims are fitted, the correct wheel bolts with the right length and correctly shaped bolt heads must be used. This ensures that wheels are fitted securely and that the brake system works properly =>page 420.
For technical reasons, it is not generally possible to use the wheels from other vehicles. This can al-so apply to wheels of the same vehicle type.
A WARNING
The deep-tread profile of all-terrain tyres can considerably increase the braking distance or cornering behaviour and thus cause acci-dents and serious injuries.
• Always bear the modified vehicle handling in mind, and drive carefully.
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Avoid heavy impacts and drive round obstacles whenever possible. Tyres, particularly low-pro-file tyres, can be considerably compressed and deformed by potholes and curb edges especial-ly. This can cause the tyre's webbing reinforce-ment to brake, and cause dents or rips on the side walls or deformations or cracks on the rims.
Old tyres should be disposed of as required !!IS by legislation.
Wheel bolts
Wheel boils must always be tightened with the cor-rect tightening torque =>page 420.
Rims with bolted-on rings
Rims with bolted-on rings consist of several com-ponents. These components are fastened using special bolts and special fastening technology. This ensures that the wheel functions proper1y, does not leak, remains safe and runs true. For this reason, damaged rims should be replaced. They may only .,..
Wheels and tyres I 369