catalytic converter VOLKSWAGEN TRANSPORTER 2012 Owners Manual

A WARNING (Continued)
• Switch off your mobile telephone or two-way radio when dealing with fuel. Electro-magnetic radiation can generate sparks which can in turn start a fire.
• Avoid electrostatic discharge and electro-magnetic radiation in the direct vicinity of fuels.
• Never spill fuel in the vehicle or In the lug-gage compartment.
Petrol
1"'111 First read and observe the introductory L-lo::.l.l information and safety warnings & on page 343.
Petrol types
Vehicles with a petrol engine must be run on un-leaded petrol in compliance with the European standard EN 228 => Petrol types are categorised according to their oc-tane number, e.g. 91, 95, 98 or 99 RON (RON = research octane number). The vehicle may be fil. led with petrol that has a higher octane number than the engine requires. However, this does not provide any advantage in terms of fuel consump-tion or engine output. Where petrol complying with the EN 228 standard is not available, Volkswagen Commercial Vehicles dealerships and filling sta-tions will have information on which fuels do com-ply with the EN 228 standard.
Volkswagen Commercial Vehicles recommends petrol with a low sulphur content or sulphur-free petrol for use with this engine. This reduces petrol consumption.
Petrol additives
The quality of petrol influences the running proper-ties, performance and service life of the engine. This is why the vehicle should be refuelled with good quality petrol that has only non-metallic addi-tives pre-added by the petroleum industry. These petrol additives help to prevent corrosion. keep the fuel system clean, and prevent the build-up of de-posits in the engine.
If good quality petrol containing non-metallic addi-tives is not available, or if engine problems arise. the necessary petrol additives must be added to the petrol when refuelling => 344 Whila driving
A WARNING (Continued)
• Comply with any relevant safety Informa-tion and legislation concerning the handling of fuels. Volkswagen Commercial Vehicles recommends "genuine Volkswagen or Audi fuel additives for pet-rol engines". These additives and information on how to use them are available from your Volkswa-gen Commercial Vehicles dealership.
Not all petrol additives are effective. The use of un-suitable petrol additives can cause considerable damage to the engine and catalytic converter. Met-allic additives should be avoided at all times.
Petrol additives on sale that are intended to im-prove knock resistance or increase the octane number can also contain metallic additives => CD
• Before filling up with petrol, check whether the fuel corresponds to the vehicle's require-ments according to the fuel standard Informa-tion at the pump.
• Only use fuel that complies with the EN 228 standard and has the correct octane number. Otherwise, the engine and the fuel system can suffer considerable damage. The engine can al-so lose power or fall.
• The use of unsuitable petrol additives can cause considerable damage to the engine and catalytic converter.
• If, In an emergency, you have to use petrol with an octane number lower than the recom-mended number, drive at medium engine speeds and avoid high engine loading. Avoid high engine speeds and heavy engine loads. Failure to do so can result In engine damage. Fill the tank with petrol with the correct octane number as soon as possible. .,.

CD
• Fuels that are identified at the fuel pump as containing metallic additives may not be used. LRP fuel (lead replacement petrol) also con-tains high concentrations of metallic additives. Risk of engine damage I
Diesel
r'""'('n First read and observe the Introductory L-J,:.U Information and safety warnings & on page 343.
Diesel
Diesel fuel must comply with the European stand-ard EN 590 (in Germany DIN EN 590).
The service intervals are shorter if you use diesel with a high sulphur content =>Booklet Service schedule =>CD. A Volkswagen Commercial Vehicles dealership will be able to tell you which countries have diesel with a high sulphur content.
Where diesel fuel complying with the EN 590 standard is not available, Volkswagen Commercial Vehicles dealerships and filling stations will have information on which fuels do comply with the EN 590 standard.
Do not mix fuel additives (thinners. or similar addi-tives) with diesel.
Winter diesel
When using summer-grade diesel. difficulties may be experienced at temperatures below o•c (+32.F)
because the fuel thickens due to paraffin separa-tion. For this reason winter-grade diesel which can be used at temperatures below -2o•c (·4°F) is available in countries such as Germany during the cold months.
In countries with different climatic conditions the diesel sold generally has different temperature characteristics. Check with a Volkswagen Com-mercial Vehicles dealer or filling stations in the country concerned regarding the type of diesel fuels available.
it is not unusual for a cold diesel engine to be loud-er in cold temperatures that in warm weather. In addition, exhaust emissions may be tinged with blue while the engine starts and reaches operating temperature. The amount of exhaust fumes de-pends on the outside temperature.
CD
• Just one tankful of leaded fuel, or fuel con-taining other metallic additives, can seriously Impair the efficiency of the catalytic converter and can also cause considerable damage to the catalytic converter and engine. Filter preheater
Diesel vehicles are equipped with a filter pre-heat-er system. This ensures that the fuel system re-mains operational even down to approximately -24•c (-11.F) provided that winter-grade diesel which is safe down to -15•c (+5.F) is used.
However, if the fuel has thickened to such an ex-tent that the engine will not start at temperatures below -24•c (-11.F) simply place the vehicle in a warm garage or workshop for a while.
Supplementary heater
Vehicles fitted with a diesel engine may also be equipped with a fuel-driven supplementary heater. This heater is powered with fuel from the vehicle tank. In this case, odour and water vapour may es-cape from the vehicle, and there may be a greater quantity of smoke. This is quite normal when the system is in use, and does not indicate damage or a fault in the system.
The supplementary heater will be switched off au-tomatically if the level in the fuel tank is low (re-serve level).
A WARNING
Never use a start booster. Start boosters may explode or cause the engine to suddenly run at high revs, which can cause serious Injuries and engine damage.
CD
• Before filling up with diesel, check whether the fuel corresponds to the vehicle's require-ments according to the fuel standard Informa-tion at the pump.
• Only use fuel that complies with the EN 590 standard and has the correct cetane number. Otherwise, the engine and the fuel system can suffer considerable damage. The engine can al-so lose power or fall. ..,.
At the filling station 1345

A WARNING (Continued)
• If engine oil is spilt on cold engine parts it can heat up and Ignite when the engine Is running.
• Always ensure that the engine oil filler cap Is securely tightened after refilling, and that the dipstick Is properly Inserted back Into the guide tube. This will prevent the engine oil from draining out on to hot engine compo-nents when the engine Is running.
CD
• Do not start the engine if the engine oil level Is above area@. Seek expert assistance. The catalytic converter and the engine could other-wise be damaged.
• When refilling or changing service fluids, please ensure that the correct fluids are added through the correct openings. Incorrect service fluids can cause serious functional problems and engine damage.
Engine oil consumption
n"'n First read and observe the introductory l.-J,:.ll information and safety warnings & on page 353.
Engine oil consumption can vary from engine to engine and can change during the working life of an engine.
The vehicle may consume up to 1.0 litre of engine oil per 2,000 km, depending on how you drive and the conditions in which the car is used. In new ve-
Changing engine oil
n"'n First read and observe the Introductory l.-J,:.ll Information and safety warnings & on page 353.
The engine oil must be changed regularly in ac-cordance with the data given in the service sched-ule.
The engine oil and filter change should be carried out by a qualified workshop due to the special tools and knowledge required, this also applies to the disposal of used oil. Volkswagen Commercial Vehi-cles recommends using a Volkswagen Commercial Vehicles dealership for this purpose.
The engine oil level must never be above I!!S area @. Otherwise oil can be drawn in through the crankcase breather and escape into the atmosphere via the exhaust system. <1
hicles. consumption is likely to be higher for the first 5,000 km. The engine oil level must therefore be checked at regular intervals, preferably when refuelling and before long journeys.
When the engine is working hard the oil level must be kept within area =>Fig. 274 @,for instance dur-ing long motorway cruising in summer, trailer tow-ing or climbing mountain passes. <1
More details on the service intervals can be found in the service schedule.
Additives in the engine oil can cause new engine oil to discolour quickly. This is normal and does not mean that the engine oil should be changed more frequently.
A WARNING
If, In exceptional cases, you have to carry out an oil change yourself, please note the fol-lowing:
• Always wear eye protection. .,.
In the engine compartment 357

Recycling and scrapping end-of-life vehicles
rl'l1 First read and observe the Introductory L-J,:,JJ information and safety warnings & on page 404.
Recycling end-of-life vehicles
Volkswagen Commercial Vehicles has already made provision for the time when you choose to have your vehicle recycled in an environmentally-friendly manner. The recycling system operating in many European countries will take back your vehi-cle at the end of its useful life. Once the vehicle has been recycled, a certificate of destruction will be issued to show that the vehicle has been dis-posed of correctly.
End-of-life vehicles are recycled free of charge, provided that national legislation is complied with.
Further information on the recycling of end-of-life vehicles can be found at a Volkswagen Commer-cial Vehicles dealership.
Scrapping
The relevant safety requirements must be ob-served when the vehicle or components of the air-bag and the belt tensioners are scrapped. Quali-fied workshops are familiar with these require-ments. Engine management system and exhaust purification system
o:JJ Introduction
This chapter contains information on the following subjects:
Indicator lamps . . . . . . . . . . . . . . . . 407
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 408 Diesel particulate filter . . . . . . . . . . 409
Additional information and warnings:
• Changing gear =>page 260
• Filling the tank =>page 340
• Fuel =>page 343
• Engine oil =>page 353
• Battery =>page 362
• Information stored in the control units =>page 394
• Tow-starting and towing =>page 446
Indicator lamps
A WARNING
The components of the exhaust system be-come 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.
• Never apply undersea! or anti-corrosion coatings to the exhaust pipes, catalytic con-verter, diesel particulate fitter or the heat shields on the exhaust system. [Q First read and observe the introductory information and safety warnings & on page 407.
lit up Possible cause Solution
Engine management system fault {Electron-The engine should be checked by a qualified
J ic Power Control). workshop as soon as possible.
R Diesel engine is preheating before starting. =>page 257
Decrease speed. Drive carefully to the next Fault in catalytic converter . qualified workshop. The engine should be ..... checked.
Vehicle care and maintenance 407

Lit up Possible cause Solution
Drive in 4th gear (manual gearbox) or in gear D (DSG® dual clutch gearbox) at a speed of at
Diesel particulate filter has become satura-least 70 km/h (43 mph) for approximately 15 mi-nutes. ted with soot (except for courier vehicles). Observe the valid speed limits &. Go to the nearest qualified workshop if the indi-cator lamp still does not go out 409.
If possible, do not switch off the engine.
Only for specially equipped courier vehi-Please observe the applicable regulations for switching off the engine in special traffic situa-cles: lions (e.g. at level The indicator diesel particulate filter is being regenerated. lamp switches off when the diesel particulate fil-ter has been regenerated.
Flashes Possible cause Solution
Fault in engine management system (diesel The engine should be checked by a qualified } engine).
Misfiring, which damages the catalytic con-vert er.
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.
A WARNING
Please observe legal requirements If cleaning the diesel particulate filter when in traffic.
• Follow driving recommendation only if visibility, weather, road and traffic conditions are suitable.
• Do not endanger other vehicles on the road.
A WARNING
The exhaust fumes contain carbon monoxide, an odourless and colourless toxic gas. Car-bon monoxide can cause people to lose con-sclousness. lt can also cause death.
• Never start or run the engine In unventlla-ted or closed spaces.
• Never leave the engine running If you leave the vehicle unattended.
Catalytic converter
,..-('n First read and observe the introductory L-J,:.U Information and safety warnings & on page 407.
408 I Cleaning and maintenance
workshop as soon as possible.
Decrease speed. Drive carefully to the next qualified workshop. The engine should be checked.
CD
To avoid damage to your vehicle, always ob-serve the Indicator lamps and associated warn-Ing texts.
m If the indicator lamps -.. c or EPC are lit up, L!J fuel consumption may be higher and engine performance reduced. The catalytic converter is used for exhaust gas post-treatment and helps to reduce exhaust emis-sions. To help ensure long-term functionality in the exhaust system and the catalytic converter: .,.

• Use unleaded petrol only.
• Do not allow the fuel tank to run empty.
• Do not overfill engine oil 353.
• Do not tow-start the vehicle. Use jump leads 443.
If you notice misfiring, uneven running or loss of power when the vehicle is moving, reduce speed Immediately. The vehicle should be inspected at
Diesel particulate filter
r-f'n First read and observe the Introductory L-J,:,.IJ Information and safety warnings & on page 407.
The diesel particulate filter filters out soot particles in the exhaust gas. The soot particles gather in the filter and are burnt under high temperatures peri-odically (regeneration). Heat produced can warm the engine.
Regeneration can cause noises, light smells and delay in radiator fan irrespective of the outside temperature, even after the engine is switched off.
To assist the regeneration of diesel particle filter, Volkswagen recommends that you avoid making only short journeys. In vehicles with a DSG® dual clutch gearbox the engine speed can increase while the vehicle is being driven. However, the indi-cator lamp • will not light up.
Observe the following points to ensure that the ex-haust system and the diesel particulate filter will work properly for a long time:
the nearest qualified workshop. If this happens, un-bumt fuel can enter the exhaust system and es-cape into the atmosphere. The catalytic converter can also be damaged by overheating.
Even when the exhaust purification system is W working perfectly, there may be a smell of sulphur from the exhaust in some conditions. This depends on the sulphur content of the fuel being used. <1
• Only use diesel with low sulphur levels 343.
• Never use biodiesel, petrol or heating oil.
• Do not allow the fuel tank to run empty.
• Do not overfill engine oil 353.
• Do not tow-start the vehicle. Use jump leads =page 443.
Even when the exhaust purification system is W working perfectly, there may be a smell of sulphur from the exhaust in some conditions. This depends on the sulphur content of the fuel being used.
m Note for courier vehicles: vehicles with diesel l!J particulate filter are identified accordingly with Vehicle care and maintenance 409