Get Fuel and exhaust gas cleaning -> Fuel and refuelling Guide for Volkswagen Touareg SUV Third Generation (2018-2025)

Problems and solutions

Fuel and exhaust gas

cleaning

Please note ,

and at the beginning of

this chapter on page 278.

Safety warnings regarding

fuel handling

The ball coupling of the towing device is not

locked or is unlocked, but is not engaged.

Do not use the towing device. Have the

system

→

checked by a specialised ta- ller

p. 280.

WARNING

Improper handling of fuel can cause

explosions, fire, severe burns and other

injuries.

● When refuelling, switch off the

independent heating → page 153, engine,

ignition and mobile phone as well as

other radio communication devices.

● To avoid electrostatic discharge, do not

attach to the vehicle.

● Make sure that the fuel filler cap is properly

closed and that no fuel is leaking from the

fuel tank.

● Observe the applicable safety instructions

and the local fuel handling regulations.

ATTENTION

The fuel contained in a reserve canister may

spill out. This can cause fire and injury.

● Do not carry reserve jerry cans in the vehicle.

NOTICE

If refuelling is carried out incorrectly, damage to

the vehicle may occur.

● Refuel only with fuels that have been

authorised for the vehicle.

● Do not refuel with metalliferous fuels and

use only authorised additives.

● If fuel overflows, clean it immediately from all

parts of the vehicle.

Fuel may pollute the environment. If any

operating fluid leaks,

collect it and dispose of it properly.

Emergency unlocking of the fuel filler flap is

not possible. So-

enlist the help of specialised personnel.

286

Instruction manual

● Only use additives approved by

Volkswagen and in the dosage approved in

each case.

Fuel and refuelling

Introduction to the topic

● If in an emergency you have to refuel with

petrol with an octane rating that is too low,

drive only at an intermediate engine speed

and avoid high engine speeds and high

engine loads. Avoid high engine speeds and

high engine stresses, otherwise the engine

could be damaged! Refuel as soon as

possible.

The fuel filler flap is located on the right-hand

side of the vehicle in the rear area → page 8.

The type of fuel to be refuelled depends on the

vehicle's engine type. The type of fuel used by

the vehicle is shown on the factory sticker on

the inside face of the fuel filler flap.

solina with a sufficient octane rating.

At the end of the chapter, in the section on

troubleshooting, you will find information on the

control

that light up → p. 292.

warning and

lamps

Diesel

Please note ,

and on page 286.

Vehicles with diesel engines must be operated

Petrol

diesel fuel → . If diesel fuel with a

with

high

is used

Please note ,

and on page 286.

sulphur content

, shorter service intervals

→ p. 366. Information on countries where

diesel fuel has a high sulphur content can be

obtained from Volkswagen dealers.

Vehicles with petrol engines must use unleaded

petrol. Gasoline containing not more than 10 %

ethanol (E10) →

may be used.

The quality of the fuel influences the driving

behaviour, performance and service life of the

engine. Therefore, as far as possible, refuel with

The types of petrol are differentiated by octane

rating. It is possible to fill up with petrol of a

higher octane rating than the engine requires,

but this will not reduce fuel consumption or

improve engine performance.

suitable

quality fuel that already contains

→

.

additives

Information on fuel standards

p. 292

The quality of the fuel influences the driving

behaviour, performance and service life of the

engine. Therefore, as far as possible, refuel with

→

Winter diesel and filter preheating

suitable

high-quality fuel that already contains

For the cold season, there is a "winter diesel"

which retains its qualities even below -20 °C (-4

°F). In countries with other climatic conditions,

there are usually diesel fuels with different

thermal behaviour. Information on this is

available from Volkswagen dealers and filling

stations in the country concerned.

→

.

additives

Information on fuel standards

p. 292

→

NOTICE

Incorrect refuelling and the use of unsuitable

fuel additives can cause damage to the vehicle.

Vehicles with diesel engines are equipped with

a filter preheating system. Its function is to

ensure the operation of the fuel system up to

temperatures of approx.

● Before refuelling, check whether the fuel

standard on the fuel pump meets the

requirements of the vehicle.

-24 °C (-11 °F) if winter diesel fuel is used.

Fuel and exhaust gas cleaning

287

If, at temperatures below -24 °C (-11 °F), the

fuel has become so thick that it will not start the

engine, it is sufficient to leave the vehicle for

some time in a heated garage or workshop →

.

Refuelling

– Unlock the fuel filler flap using the vehicle

key or the button on the driver's door.

– Open the fuel filler flap.

– Unscrew the tank cap and fit it into the hole

provided in the lid.

WARNING

– The fuel tank is full when the automatic fuel

dispenser, when used correctly, cuts off the

fuel supply for the

Cold start sprays can ex- plore or cause a

sudden increase in engine speed. This can

cause injury and engine damage.

first time →

.

– Screw the tank cap onto the filler neck.

– Close the tank lid.

● Never use cold start engine sprays.

WARNING

NOTICE

If the fuel tank is overfilled, fuel may splash

out and overflow. This could cause explosions,

fire and serious injury.

If refuelling is carried out incorrectly, damage

to the vehicle may occur.

● Do not continue refuelling when the fuel

dispenser nozzle cuts off the fuel supply for

the first time.

● Before refuelling, check whether the fuel

standard on the fuel pump meets the

requirements of the vehicle.

● Do not use biodiesel, petrol, fuel oil or

other unsuitable fuels.

● Only use additives approved by

Volkswagen and in the dosage approved in

each case.

Protection against misfuelling

When temperatures are wintry, the diesel

engine may be doing quite a bit of work in

the winter.

Please note ,

and on page 286.

bluish

noise and that the exhaust gases have a

tint.

Refuelling

Please note ,

and on page 286.

Fig. 217 On the fuel tank filler neck: protection

against misfuelling.

Fig. 216 Behind the fuel tank cover: fuel tank cap.

Information about the fuel tank capacity can be

found in chapter

The filler neck of the fuel tank of diesel engine

vehicles may be fitted with

a protection against misfuelling

→

p. 392.

288

Instruction manual

→ Fig. 217 . This protection ensures that

refuelling is only possible with diesel fuel

dispenser nozzles.

● Park the vehicle so that no components of

the exhaust system come into contact with

readily flammable materials that may be

under the vehicle, such as dry grass.

If the protection does not give way, turn the

gun slightly from side to side. This allows the

protection to open and refuelling is possible. If

the protection still does not open, have the

system checked by a specialist workshop.

● Never use additional underbody protection

or corrosion protection products for

exhaust pipes, catalytic converters, particle

filters or heat insulators.

If the vehicle has to be refuelled with a reserve

canister in an emergency, the protection will not

open. In this case, pour the diesel fuel in very

.

small quantities very slowly and very slowly

AdBlue®.

Exhaust gas cleaning with

Exhaust relevant components

Introduction to the topic

Please note ,

at the beginning of this chapter, on page 287.

na 289.

and , on page 286, and

,

Exhaust relevant components reduce pollutant

emissions:

AdBlue®.

– Exhaust gas cleaning with

→

p. 289

– Catalyst → p. 291

– Particulate filter → p. 291

At the end of the chapter, in the section on

troubleshooting, you will find information on the

warning and control lamps that light up → p.

292.

Fig. 218 In the luggage compartment: AdBlue tank

under the plastic organiser.

WARNING

Exhaust gases contain carbon monoxide, which

can cause loss of consciousness and death.

● Never run or leave the engine running in

enclosed areas.

● Do not leave the vehicle with the engine

running unattended.

WARNING

Exhaust

system

components

become

extremely hot and could cause a fire.

Fig. 219 In the luggage compartment: fill AdBlue

with a refill bottle

.

Fuel and exhaust gas cleaning

289

Close the tank filler neck

Legend to fig. 218 and fig. 219 :

– Screw in the filler neck cap until it clicks into

place.

1

2

3

4

5

Boot floor

Plastic organiser

Plug

– Fit the tank cap and the plastic organiser.

– Lower the luggage compartment floor.

Tank filler neck cap

Refill bottle

Operations before continuing the march

– Only switch on the ignition for approx.

30 seconds.

AdBlue®

is a registered trademark and is also

known as AUS32 or DEF (Diesel Exhaust Fluid).

AdBlue®

– The system recognises the recharge made.

consumption depends on driving style,

– Do not start the engine until the 30

operating temperature and ambient

temperature.

ATTENTION

seconds have elapsed.

AdBlue®

is an irritant and corrosive liquid that

AdBlue®

Never allow the

tank to become

can cause injury to the skin, eyes and

respiratory organs if it comes into contact with

completely empty. If the range is less than 2400

km, a message appears in the instrument cluster

display requesting a refill → p. 292.

them.

AdBlue®

● Before using

, please observe the

instructions for use. If you follow the

Preparations for loading

instructions for use correctly, you are not

– Park the vehicle on a level surface.

AdBlue®

likely to come into contact with

AdBlue®

.

– Switch off the ignition.

● Store

only in the original, tightly

AdBlue®

ISO

that complies with

– Only use

22241-1 →

closed container. Never use empty food

cans, bottles or similar containers for this

.

purpose.

Open the tank filler neck

AdBlue®

®

● Always store

the reach of children.

AdBlue®

in a safe place, out of

The AdBlue filler nozzle is located on the

vehicle luggage compartment → fig. 218 .

● If

comes into contact with the

– Open the tailgate.

eyes, rinse immediately with plenty of

water for at least 15 minutes and seek

medical advice.

– Lift the luggage compartment floor.

– Remove the plastic organiser.

AdBlue®

● If

comes into contact with the skin,

immediately rinse the affected area with

plenty of water for at least 15 minutes and,

in case of skin irritation, seek medical

advice.

– Remove the cap from the

tank.

– Unscrew the cap from the tank filler neck.

AdBlue®

Filling

with a refill bottle

– Observe the instructions and information

provided by the manufacturer of the refill

bottle.

AdBlue®

● If

is swallowed, rinse mouth

thoroughly with plenty of water for at least

15 minutes. Do not induce vomiting

unless advised by a doctor. Seek medical

advice immediately.

– Check the expiry date.

– Unscrew the cap of the refill bottle.

– Place the bottle in the filler neck of the

tank and screw it in.

NOTICE

– Hold the bottle down.

AdBlue®

If

is overfilled, damage to the tank system

and the vehicle may occur.

AdBlue®

more liquid

– The

tank is full when no

ass.

comes out of the bottle →

.

– Unscrew the bottle and pull it upwards.

290

Instruction manual

AdBlue®

and thus into the atmosphere. In addition, the cat-

lyser could also be damaged by overheating.

● If

is spilled, wipe it up as soon as

possible with a damp cloth and plenty of cold

water.

Even if the exhaust gas cleaning system is

working perfectly, the exhaust gas is still a

problem for the exhaust system.

The exhaust system may have an odour similar to

that of

AdBlue®

● Remove any

with hot water and a sponge.

that has crystallised

NOTICE

of sulphur.

AdBlue®

Incorrect handling of

can lead to

damage to the vehicle, which is excluded from

the legal warranty.

AdBlue®

● Only use

22241-1.

that complies with ISO

Particulate filter

AdBlue®

Please note ,

at the beginning of this chapter, on page 287.

na 28 9.

and , on page 286, and

,

● Never mix

additives.

with water, fuel or

into the diesel tank.

AdBlue®

● Never fill

● Do not carry the refill bottle permanently in

the vehicle. In the event of a leak (due to

Function

The particulate filter filters soot from the

exhaust gases. So that the exhaust gas

treatment system works for a long time:

temperature changes or damage to the

AdBlue®

bottle), the

may damage the interior

of the vehicle.

– Only use fuels that are suitable for the

vehicle → page 287.

Dispose of the refill bottle in an

environmentally friendly manner.

– Never fill the fuel tank completely.

– Use only engine oil suitable for the vehicle

and avoid overfilling.

Catalyst

→

p. 320.

– Do not start the engine by towing; use the

starting aid instead.

Please note ,

at the beginning of this chapter, on page 28 7.

na 289.

and , on page 286, and

,

→

p. 305.

Periodic regeneration

For a long service life of the exhaust system and

the catalytic converter of the petrol engine:

The soot retained in the particulate filter is

periodically burnt at high temperature.

– Use only unleaded petrol

In order to contribute to the regeneration of the

particulate filter, Volkswagen recommends

avoiding continuous short journeys.

→

p. 2 8 7.

– Never fill the fuel tank completely.

– Do not overfill engine oil

During regeneration, noises may occur, a slight

odour may arise and the engine speed may

increase. During driving and after the engine has

been switched off, the radiator fan may after-run.

→

p. 320.

– Do not start the engine by towing; use the

starting aid instead.

→

p. 305.

yellow

During periodic regeneration, the

control lamp

If, while driving, combustion malfunctions

occur, there is a drop in power or the engine

does not turn over properly, reduce speed

immediately, go to a specialised workshop and

have the vehicle inspected.

d. oes not light up.

→ In such cases , unburned fuel residues can

enter the exhaust system.

Fuel and exhaust gas cleaning

291

The speed of the engine should be reduced. The

engine should be run at an intermediate speed

and the engine should not be subjected to

heavy loads.

Problems and solutions

Please note ,

and , on page 286,

and

,

287.

at the beginning of this chapter, on page

na 289.

If these symptoms appear immediately after

refuelling, switch off the engine immediately to

avoid possible damage. Seek the assistance of

qualified personnel.

If this comes on together with the red

warning light : There is a fault in the SCR

system. Impossible to start the engine!

Immediately, without switching off the

engine, go to a specialist workshop and

NOTICE

AdBlue®

If the

level is too low and the ignition

the system checked →

level is too low.

.

have

is switched off, it will no longer be possible to

restart the engine, even with the starting aid!

AdBlue®

Impossible to start the engine! Park the

● Fill up with sufficient

when the

vehicle and fill with the minimum required

remaining range is approx. 1000 km at the

latest.

● Never completely overfill the

AdBlue®

amount of

→ p. 289 → .

AdBlue®

If it comes on together with the yellow

warning lamp : The SCR system is pre

tank.

The system is either faulty or has been filled with Ad

Blue®

that does not meet the prescribed

As long as the control lamps are on or

flashing, an anomaly is to be expected.

The use of the engine lees and an increase in

consumption.

standard. Immediately go to a specialist

workshop and have the system checked.

fuel

AdBlue®

The

level is too low. Fill AdBlue®

specified

within the

number of kilometres →

p. 289 → .

The particulate filter is saturated with air

and needs to be regenerated. Drive at

speeds between 50-120 km (31-75 mph)

to assist regeneration. Observe the

applicable speed limits and observe the

driving advice. The indicator light goes

out automatically when the particulate

filter has regenerated. If the warning light

is still illuminated after approx. 30

minutes of driving, contact a workshop

immediately.

Fuel standards

Petrol

Vehicles with petrol engines must use petrol in

EN 228 or

accordance with European standard

German standard DIN 51626-1 →

.

If petrol of the above-mentioned standard is

not available, please ask a Volkswa- gen dealer

which petrol is suitable for your vehicle.

If it lights up: There is a fault. Have the

engine checked by a specialist workshop.

Diesel

Vehicles with diesel engines must use diesel

fuel in accordance with European standard EN

590 or German standard DIN 590 →

If it flashes: There are com- bustion jumps

that damage the catalytic converter.

Reduce speed, drive immediately to the

nearest specialist workshop and have the

engine checked.

.

If diesel fuel of the aforementioned standard is

not available, ask your Volkswagen dealer about

the diesel fuels that are suitable for your vehicle.

Irregular engine operation and anomalies

NOTICE

If the engine does not turn over properly or if

malfunctions occur while driving, this could be

due to poor fuel quality. Immediately reduce

Refuelling with fuel that does not comply with the

relevant standard may reduce engine power and

may cause significant damage to the engine and

fuel system

.

292

Instruction manual

Fuel and exhaust gas cleaning -> Fuel and refuelling for Your Volkswagen Touareg SUV Third Generation (2018-2025)

Related Topics

Fuel and exhaust gas cleaning