Get Check and replace Guide for Volkswagen Touareg SUV Third Generation (2018-2025)

– You will have to apply the brakes much

harder, as the brake servo does not work.

Avoid crashing into the towing vehicle.

Check and replace

In the engine compartment

– Observe the information and instructions in

the operating instructions of the vehicle to be

towed.

Safety warnings for work on the

engine compartment

Driver of the towing vehicle:

– Accelerate with special care and caution.

Avoid abrupt manoeuvres.

Always park the vehicle on a firm, level surface

and take all necessary safety precautions before

carrying out any work on the engine

compartment.

– Brake earlier than usual and gently.

– Observe the information and instructions in the

towed

owner's manual of the

vehicle.

The engine compartment of the vehicle is a

hazardous area. Only carry out work on the

engine and engine compartment yourself if you

are familiar with the necessary operations and

generally applicable safety measures and if you

have the correct tools, equipment and operating

Serious injuries can occur

fluids.

if work is

→

.

carried out improperly

If necessary, have

all work carried out by a specialist workshop.

Volkswagen recommends that this work be

carried out by a Volkswagen dealer.

WARNING

Any accidental movement of the vehicle

during maintenance work could cause

serious injury.

● Never work under the vehicle without first

securing it against rolling away. When

working under the vehicle with the wheels

on the ground, the vehicle must be on a

level surface, the wheels must be locked

and the vehicle key must be removed from

the ignition switch.

● If you have to work under the vehicle,

additionally support it securely with suitable

stands. The jack is not suitable for this

purpose and may not be able to withstand

the load, which could result in serious

injury.

● The start-stop system must always be

switched off.

WARNING

The engine compartment of any vehicle is a

dangerous area where serious injuries can

occur!

Check and replace

313

● When carrying out any kind of work,

always be extremely cautious and prudent

and observe the generally applicable safety

measures. Never put yourself at risk.

● When replenishing operating fluids, avoid

getting them on engine components or the

exhaust system. These fluids could cause

a fire.

● Never carry out work on the engine or

engine compartment unless you are familiar

with the necessary operations. If you are

not sure what needs to be done, have the

necessary work carried out by a specialist

workshop. Failure to carry out the work

properly may result in serious injury.

WARNING

The electrical system is under high voltage and

can cause electric shock, burns, serious injury

and death!

● Never short-circuit the electrical system.

The 12-volt battery could explode.

● Never open or close the engine cowling if

steam or engine coolant is escaping from

the engine compartment. Hot vapour or

coolant can cause severe burns. Always wait

until you no longer see or hear vapour or

coolant escaping from the engine

compartment.

● To reduce the risk of electric shock or

serious injury, observe the following while

the combustion engine is running or when

starting and, on hybrid vehicles, while the

propulsion system is engaged or when it

is switched on:

– Never touch the electrical wiring of the

ignition system.

– Never touch the electrical cables or

electrical connections of gas discharge

lamps.

– On hybrid vehicles, never touch high-

voltage components, the high-voltage

battery or the high-voltage on-board

power supply, especially the orange

high-voltage cables.

● Always wait until the engine has

cooled down before opening the

engine bonnet.

● Touching hot engine or exhaust system

components can cause skin burns.

● When the engine has cooled down, observe

the following before opening the engine

bonnet:

– Engage the electronic parking brake and

move the selector lever to the P

position.

WARNING

There are rotating parts in the engine

compartment which could cause serious injury.

– Switch off the ignition and remove the key

from the ignition lock.

– Always keep children away from the

engine compartment and never leave

them unattended.

● Never reach into the radiator fan or radiator

fan area. Touching the rotor blades can

cause serious injury. The fan is

● When the engine is hot, its cooling system is

under pressure. Never open the cap of the

engine coolant expansion tank when the

engine is hot. Doing so could cause coolant

to splash out and result in serious burns

and other injuries.

– Turn the expansion tank cap slowly and

carefully anticlockwise and at the same

time apply slight pressure to the cap.

temperature-dependent and may start

automatically, even when the ignition is

switched off and the key is out of the

ignition switch.

● If work is to be carried out during

engine start-up or while the engine is

running, be aware that rotating parts

may be damaged.

The high voltage ignition system (e.g. poly

V-belt, alternator or radiator fan) and the

high-voltage ignition system represent a

mortal danger. Always act with the utmost

caution.

– Always protect your face, hands and

arms from hot coolant or steam with a

large, thick cloth.

- Always make sure that no part of the

body, no jewellery or tie, no clothing if

loose-fitting, and no clothing that is too

314

Instruction manual

If your hair is long, it may get caught in

the rotating parts of the engine

NOTICE

When replacing or changing operating fluids,

make sure that you use the correct fluids in

the correct filler ports. Using the wrong

operating fluids can lead to serious

malfunctions and engine damage.

compartment. Before working on the

engine compartment, remove any

jewellery or ties you may be wearing, tie

back your hair if it is long, and tie up any

loose clothing to prevent it from getting

caught in engine parts.

- Never press the accelerator pedal

carelessly, but always with the utmost

caution. The vehicle could start to move

even with the electronic parking brake

engaged.

Operating fluids leaking from the vehicle

pollute the environment.

Therefore, look under the vehicle regularly. If

there are operating fluid stains on the floor, take

the vehicle to a specialist workshop and have it

checked. If operating fluid leaks

operational, dispose of it properly.

● Never leave any objects in the engine

compartment, e.g. rags or tools. Such

objects can cause malfunctions, engine

damage and fire.

Preparing the vehicle for engine

compartment work

WARNING

If additional insulating elements (e.g. blankets)

are placed in the engine compartment, this could

prevent the engine from functioning properly,

could cause a fire and could result in serious

injury.

Checklist

Before working on the engine compartment,

always carry out the following operations in the

order given →

Place the vehicle on a firm, level surface, taking

the necessary safety precautions.

:

● Never cover the engine with blankets or

other insulating materials.

WARNING

Operating fluids and some materials in the

engine compartment are highly flammable and

can cause fire and serious injury!

Depress the brake pedal and hold it down until

the ignition is switched off.

Connect the electric parking brake → p. 231.

Move the selector lever to the P position.

→

p. 176.

● Never smoke near the engine compartment.

Switch off the ignition and remove the key

from the ignition lock → p. 168.

Wait for the engine to cool down sufficiently.

Keep children and others away from the

engine compartment at all times.

● Never work near naked flames or

sparks.

● Never pour operating fluids on the engine.

These could ignite on contact with hot

engine parts and cause injury.

Make sure that the vehicle cannot move

unexpectedly.

● When working on the fuel system or the

electrical system, please note the

following:

– Always uncouple the 12-volt battery.

Make sure that the vehicle is unlocked

when uncoupling the 12-volt battery,

otherwise the anti-theft alarm will be

triggered.

WARNING

For your own safety, do not ignore this

important checklist, otherwise serious accidents

and injuries may occur.

● Always follow the instructions in the

checklist and observe the generally

applicable safety measures.

– Never work in the vicinity of heaters,

space heaters or open flames.

● Always have an operational and serviced

fire extinguisher on hand.

Check and replace

315

If the engine bonnet does not close properly,

raise it again and close it again.

Opening and closing the engine

bonnet

When the bonnet is closed properly, it is flush

with the adjacent body parts. The engine

bonnet is no longer highlighted on the

instrument panel → p. 317 or the display is

switched off.

WARNING

If the engine bonnet is not closed correctly, it

could open unexpectedly while driving and

prevent forward visibility. This can lead to

accidents and serious injury.

● After closing the engine bonnet, make sure

that the lock is properly engaged in the

locking plate. The engine bonnet must be

flush with the adjacent body parts.

Fig. 241 In the footwell on the driver's side: engine

bonnet release lever. On right-hand drive vehicles,

the arrangement is symmetrical.

● If, while driving, you notice that the engine

bonnet is not closed properly, stop the

vehicle immediately and close the bonnet.

● Only open or close the engine bonnet

when no one is in the area of the engine

compartment.

Fig. 242 Above the radiator grille: engine cowling

release lever.

NOTICE

● To prevent damage to the engine bonnet and

wiper arms, open the engine bonnet only

when the wiper is switched off and the wiper

arms are above the windscreen.

Opening the engine bonnet

– Before opening the engine bonnet, make sure

that the windscreen wiper arms are above

● Always place the wiper arms on the glass

before starting to drive

the windscreen →

.

– Open the driver's door and pull the unlocking

lever in the direction of the arrow.

→ fig. 241 . The engine bonnet is released

from the locking mechanism of the locking

plate by the force of a spring →

.

– Lift the bonnet by the opening lever

→ fig. 242 (arrow) and open it fully. The

bonnet is held open by the pressurised gas

spring.

Close the engine bonnet

– Pull the engine bonnet down until the

resistance of the pressurised gas spring

.

→

– Drop the bonnet from a distance of

approx. 30 cm into the locking mechanism

of the locking plate. Do not press it down

afterwards!

316

Instruction manual

Do not continue driving! If necessary, raise the

engine bonnet again and close it again.

Indication on the display

The display is also shown when the ignition is

switched off and switches off a few seconds

after the vehicle has been locked with the doors

closed.

WARNING

Ignoring the warning signs displayed may

cause the vehicle to stall in traffic and could

lead to accidents and serious injury.

● Never ignore warning notes.

● Stop the vehicle as soon as safely possible.

Fig. 243 On the instrument panel display: engine

bonnet open or not closed correctly.

The symbolic representation may vary

depending on the version of the control

box.

If the engine bonnet is open or not closed

correctly, this is indicated on the instrument

panel display by a symbolic representation →

fig. 243 .

ments.

Removing and fitting the engine compartment cover

Fig. 244 With the engine cowling open: engine compartment cover.

If the engine compartment cover has to be

removed and fitted, the preparations for work on

the engine compartment → page 313 must first

be observed !

Removing the engine compartment cover

requires a certain amount of manual skill. In

case of uncertainty, Volkswagen therefore

recommends that a Volkswagen dealer should be

consulted for removal.

or seek professional help.

Check and replace

317

Fitting the engine compartment cover

Legend to fig. 244 : Centre

Carefully press down all the components of the

engine compartment cover at the corresponding

fixing points.

1

2

3

64

cover Right cover Left

cover Housings

Holes for sockets for starting aids

tes → . Before installation, make sure that the

rubber buffers are correctly positioned in the

High-voltage general warning sign.

Engine compartment gasket

4

grooves → fig. 244

.

7

5

3

– Insert the left cover → fig. 244 under the

engine compartment gasket

→ fig. 244

7

4

and press it into the housings

until it clicks into place.

– Insert the right-hand cover → fig. 244

under the engine compartment gasket

2

1

3

2

Engine compartment covers → fig. 244

y

have to be dismantled in the following cases:

→ fig. 244

7

4

and press it into the housings

until it clicks into place.

– Replacement of the left headlamp bulb.

- Fit the centre cover → fig. 244

on the

1

Engine compartment covers → fig. 244

1

y

holes in the opposite direction of the arrow,

insert it under the engine compartment gasket.

have to be dismantled in the following cases:

7

and press it down until

→ fig. 244 to

be fitted.

– Replacement of the right headlamp

bulb

→

p. 295.

– Close the engine bonnet → p age 313.

– Charging of the coolant in the circuit of low

temperature.

NOTICE

Remove the engine compartment cover

To avoid damage to the engine compartment

cover and the engine compartment gasket,

carefully disassemble and assemble the

individual components.

When removing the components from the

engine compartment cover, always carefully

corresponding fixing

pull them out at the

points

→

.

● When removing components, do not jerk or

tilt them.

– Open the engine bonnet → page 313.

● To engage them in the fixing points, press the

components only lightly

1

– Pull the cover → fig . 244

in the

.

direction of the arrow by pressing on the seal

of the opening.

tor

7 slightly to one side.

2

– Pull the cover

upwards by pressing

slightly towards

7

the engine bay gasket

on one side.

3

– Pull the left cover

by pressing the engine

upwards

7

light-

compartment seal to one side.

operative. Volkswagen dealers are always

informed in good time of any changes.

Liquids and operating media

All fluids and operating media, such as tyres,

WARNING

engine coolant or vehicle batteries, are subject

to continuous development. In the case of

combustion engines, this also applies to toothed

belts, engine oils, spark plugs and so on.

Inappropriate or improperly used fluids and

operating media can lead to accidents,

injuries, burns and serious poisoning.

Therefore, whenever fluids or media need to be

changed, please contact a specialist workshop.

● Store operating fluids only in their

original, tightly closed containers.

318

Instruction manual

● Never store operating liquids in empty

food cans, bottles or other similar

containers, as they could be ingested by

someone else.

Windscreen washer fluid

● Keep liquids and operating media out of

the reach of children.

● Always read and heed the information and

warnings on the operating fluid containers.

● When using products that emit harmful

vapours, always work outdoors or in a well-

ventilated area.

● Never use fuel, turpentine, engine oil, nail

polish remover or any other evaporating

liquids for the maintenance of the vehicle.

These substances are toxic and highly

flammable and can cause fires and

explosions!

Fig. 245 In the engine compartment: Vacuum reservoir

cover.

Check the washer fluid level regularly and restore

it if necessary.

NOTICE

There is a sieve in the filler neck of the tank of

the scrubber-drier. When filling the tank, this

sieve retains large dirt particles so that they do

not reach the ejectors. The sieve should only

be removed for cleaning. If the strainer is

damaged or not fitted, these dirt particles could

enter the system during filling and clog the

washer ejectors.

● Use only suitable operating fluids. Never mix

up operating fluids, otherwise serious

malfunctions and engine damage may occur!

● If accessories and other optional equipment

are fitted upstream of the cooling air inlets,

the cooling effect of the engine coolant is

reduced. At high ambient temperatures and

high engine loads, the engine can overheat!

– Open the engine bonnet → page 313.

Leaking operating fluids may pollute the

environment. If

If any operating fluid comes out, collect it in a

suitable container and dispose of it properly and

– The windscreen washer tank can be

recognised by the symbol on the cover →

fig. 245.

– Check if there is still enough liquid in the tank.

an environmentally sound

in

– If refilling is necessary, mix clean water (not

Volkswagen-recommended

distilled) with a

manner

.

→

in the

rinsing agent

correct ratio as

indicated on the packaging.

– If the outside temperature is low, add a special

prevent the water from

anti-freeze liquid to

freezing →

.

Capacities

The capacity of the window washer tank is

approx. 4.5 to 7.5 litres.

WARNING

Never mix inappropriate coolant additives or

similar additives with the washer fluid.

Otherwise you may

Check and replace

319

The formation of an oily film on the parabria

would considerably hinder visibility.

Engine oil

● Use clean, clear water (not distilled) with a

window cleaner recommended by

Volkswagen,

Introduction to the topic

● If necessary, add a suitable anti-freeze

fluid to the windscreen washer fluid.

WARNING

Incorrect handling of the motor oil can cause

severe burns and other injuries.

NOTICE

● Always wear eye protection when working

with engine oil.

● Never mix the windscreen cleaner

recommended by Volkswagen with other

cleaning agents. Doing so could lead to

flocculation of the components and clogging

of the ejectors.

● Engine oil is toxic and should be kept out

of the reach of children.

● Store engine oil only in the original, tightly

closed container. Keep this also in mind

with used oil until you take it for disposal.

● When replenishing operating fluids, make sure

that you use the correct fluids in the correct

filler ports. Using the wrong operating fluids

can lead to serious malfunctions and engine

● Never store engine oil in empty food cans,

bottles or other similar containers, as this

could result in it being ingested.

damage

.

● Continued contact with the oil can damage

the skin. Wash areas of skin that have been

soiled with oil thoroughly with soap and

water.

● When the engine is running, the engine oil

is extremely hot and can cause severe skin

burns. Always wait for the engine to cool

down.

If oil leaks or spills from the engine, it can

pollute the environment. If

If any operating fluid comes out, collect it and

dispose of it properly and in an environmentally

friendly manner.

Engine oil specifications

Please note and , on page 313, and

see page 320 at the beginning of this chapter.

As far as possible, only Volkswa-approved engine

oil should be used.

gen → . If the flexible oil change service is to

be used, only engine oils approved for this

service that comply with the relevant

Volkswagen standard may be used. The oils

listed below are all synthetic multigrain oils.

The use of the right oil is important for the

function and service life of the engine. The

engine is supplied from the factory with a

special multigrade quality oil which can

generally be used throughout the year.

do.

320

Instruction manual

Engine oils are constantly being improved.

Volkswa- gen dealers are always informed of

any changes in good time. Volkswa- gen

therefore recommends that you have your oil

changed by a Volkswa- gen dealer.

The use of engine oils conforming to the

specifications of the VW 504 00 and VW 504 00

standards is not required.

VW 507 00 requires the use of fuels with a

quality in accordance with EN 228 (for petrol)

and EN 590 (for diesel) or equivalent. Engine oils

conforming to the specifications of VW 504 00

and VW 507 00 are therefore not suitable for

many markets.

The quality of the engine oils is not only

adapted to the requirements of the engines and

exhaust gas cleaning systems, but also to the

quality of the fuel. In all combustion engines,

for technical design reasons, the engine oil

comes into contact with combustion residues

and fuel, which influences the ageing of the oil

accordingly.

If the engine is fitted with engine oil

conforming to the specifications of VW 502 00,

VW 504 00 and VW 507 00, there is a sticker on

the lock plate in the engine compartment with a

corresponding note. Please note this note!

Since the quality of fuel differs from market to

market, in some cases considerably, this aspect

has to be taken into account when choosing the

appropriate engine oil.

Alternating engine oil

specifications → Engine oil

Authorised engine oil specifications

→

specifications → Engine oil

specifications

Flexible service

QI6 (long life), QI4, QI7 (time-dependent), QI6

Fixed duty QI1, QI2, QI3,

EU, Switzerland,

Norway, Japan and

Australia onlya

Engine type

(long life)

)

cation)

(e.g. by mileage)

Petrol engine of

183 kW

VW 502 00

-

Petrol engines

except 183 kW

Diesel engines with

VW 504 00

507 00

VW 502 00

VW 507 00

VW 504 00

particulate filter

-

)

dieselb

Fileless diesel engines

particle tro-

selb

507 00

Hybrid

VW 505 01

VW 502 00

VW 507 00

VW 504 00

)

^(a)The alternative engine oil specifications shall only be used in Stationary Service QI1, QI2, QI3, QI4 and QI7 and only if the quality of

the fuel available in the country concerned complies with EN 228 (for petrol) and EN 590 (for diesel) or is equivalent.

b)

If you do not know whether the vehicle is equipped with a diesel particulate filter, please consult a specialist workshop.

Volkswagen recommends that you visit a Volkswagen dealership for this.

NOTICE

● Only use engine oils with the specifications

expressly approved by Volkswagen for the

● Do not add any additional lubricant to the

engine in question. The use of other oils can

engine oil. Any damage caused by the use

lead to engine damage!

of such products is excluded from the legal

warranty.

● If the engine oils listed in the table are not

available, in case of emergency you can use

other engine oil from the same oil type.

tor. In order not to damage the engine, until the

321

If you change the oil, you can add a

maximum of 0.5 litres of the next oil from

the next oil change once:

– Petrol engines: ACEA A3/B4 or API SN

(API SM) standard

– Diesel engines: ACEA C3 or API CJ-4 standar

d

Before changing the engine oil, first find

out where to dispose of it.

Change engine oil

used oil properly.

Please note and , on page 313, and

see page 320 at the beginning of this chapter.

Always dispose of oil in an environmentally

friendly manner. Do not dispose

never pour used oil into gardens or forests, into

the sewage system, on streets or roads, into

rivers or streams.

The engine oil must be changed regularly.

Observe the service interval for your vehicle →

p. 366.

or other types of water.

Due to the problems involved in disposing of

used oil and the need for special tools and

expertise , always have the engine oil and oil

filter changed by a specialist workshop. Volks-

wagen recommends a Volkswagen dealership

for this purpose.

Engine oil consumption

Please note and , on page 313, and

More detailed information on service intervals

can be found in the Maintenance Plan.

see page 320 at the beginning of this chapter.

Engine oil consumption may vary from engine

to engine and over the life of the engine.

Additives in the engine oil cause the new oil to

darken after a short period of engine operation.

This is normal and is not a reason to change

the oil more frequently.

Oil consumption can be up to 1 litre per 2000

km depending on the driving style and the

conditions under which the vehicle is used. In

the case of new vehicles, oil consumption may

be even higher during the first 5,000 kilometres.

For this reason, the oil level should be checked

regularly, preferably when refuelling and before

embarking on long journeys.

WARNING

If, in exceptional cases, you have to change the

engine oil yourself, please note the following:

● Always wear eye protection.

If the engine is subjected to heavy loads (e.g.

long motorway journeys in summer, driving with a

trailer → p. 278 or driving over mountain passes),

● To avoid burns, always wait for the

engine to cool down completely.

● Keep the arms horizontal when

unscrewing the oil drain screw by hand so

that oil cannot run down them.

permissible

the oil level should be in the upper

range of → fig. 246 B

.

● To collect used oil, use a suitable container

with at least the same capacity as the

engine.

● Never store engine oil in empty food cans,

bottles or other similar containers, as other

people may confuse it.

● Engine oil is toxic and should be kept out

of the reach of children.

322

Instruction manual

Checklist

Check engine oil level and

replenish oil.

Carry out the following steps in the order given

→

:

Please note and , on page 313, and

see page 320 at the beginning of this chapter.

1. Park the vehicle with the engine at

operating temperature on a horizontal

surface to avoid incorrect checking of the

engine oil level.

2. Switch off the engine and wait a few

minutes for the engine oil to return to the

oil sump.

3. The vehicle does not have an oil dipstick in

the engine compartment. The current oil

level can be shown on the infotainment

system display → fig. 246:

– Switch on the ignition.

CAR

– Press the

infotainment button.

function button .

Service

Fig. 246 Infotainment system display: engine oil

level indicator.

Settings

– OR: press the

and then

function button.

.

Service and Controls

4. Operations required after checking the

engine oil level → fig . 24 6 :

A

:

Do not add engine oil

→

.

B

The engine oil level is correct. Oil can be

added up to the upper limit of this area if,

for example, the engine is subjected to high

stress → page 322. If necessary, continue

with step 5.

C

Engine oil level is too low. Do not add

engine oil without fail.

Continue to step 5.

5. Open the engine bonnet → page 313.

6. Locate the oil filler neck of the motor. The

oil filler neck can be recognised by the

symbol on the cap.

Fig. 247 Engine compartment: Engine oil filler

neck cover (schematic representation).

→ If you are not sure where the cover is

Legend to fig. 246 :

located, please contact a specialist workshop.

A

B

C

7. Unscrew the cap of the oil filler neck → fig.

Do not add engine oil under any

247 .

circumstances. Engine oil level is correct.

Engine oil level is too low. Add engine oil.

8. Add only the oil expressly approved by

Volkswagen for the engine in question, a

little at a time and in small quantities (no

more than 0.5 l).

9. To avoid overfilling the tank, wait approx. 1

minute each time you add oil.

The oil is allowed to flow into the oil sump.

Check and replace

323

Checklist (continued)

Otherwise the catalytic converter and the

engine could be damaged!

10. Check the oil level on the indicator on the

info- tainment system display again before

adding another small amount of oil. Never

● When replenishing operating fluids, make sure

that you use the correct fluids in the correct

filler ports. Using the wrong operating fluids

can lead to serious malfunctions and engine

damage.

engine oil →

.

overfill the

11. At the end of the process, the oil level

should be in the centre of the area.

B

→ fig. 246 . The oil level should not be in

The engine oil level must never be

higher than the zone

A

B

the zone , above , and must never be

above the zone

A

→

.

B

→ fig. 246 . Otherwise, oil could be sucked in

12. If you have inadvertently added too much

oil and the oil level is above the level zone

through the crankcase breather and reach the

atmosphere via the exhaust system.

cape.

A

→

fig. 246

, do not run the engine. Notify a

specialist workshop and, if necessary, seek

the assistance of qualified personnel. .

13. After refilling, close the oil filler neck with

the cap.

Problems and solutions

14. Close the engine bonnet → page 313.

Please note and on page 313, and

see page 320 at the beginning of this chapter.

Service messages are also shown in the

infotainment system display next to the engine

oil level → Fig. 246 . After correcting the oil level,

the service message is updated after about 5

days or after 500 km. Until then, the

Do not continue driving! The engine oil

pressure is too low. Stop the engine.

Check the engine oil level → page 323. - If

the warning light flashes even though

the oil level is correct, do not continue

driving or leave the engine running.

Otherwise engine damage may occur.

Only seek the assistance of qualified

personnel at .

Engine oil level is too low. Switch off the

engine. Check the engine oil level → p.

323 . OR: There is a fault in the engine oil

system. Have a specialist workshop carry

out a check. Have the engine oil sensor

checked.

infotainment system display shows Oil change: in --

- km / --- days

.

WARNING

If engine oil comes into contact with hot

engine parts, it could ignite. This could result

in fire, burns and other serious injury.

● If oil is spilled on cold engine components,

the oil may heat up and ignite when the

engine is running.

● After refilling the oil, make sure that the

cap is screwed on tightly. This will prevent

the oil from leaking out and falling on hot

engine components when the engine is

running.

The engine oil pressure is too low. Do

not exceed the maximum engine speed

indicated on the display of the

instrument panel.

truments!

NOTICE

● If you have inadvertently added too much oil and

the level is above the zone

A

→ fig. 246 , do not run the engine.

Contact a specialist workshop and, if

necessary,

324

Instruction manual

● Work on the high-voltage system and other

systems which can be indirectly influenced

by it may only be carried out by

appropriately qualified and trained

personnel.

Engine coolant

Introduction to the topic

Coolant and its additives can pollute the

environment. If it leaks to the-

If there is any operating fluid, collect it and

The vehicle's cooling system consists of an

engine cooling circuit and a high-voltage

system cooling circuit. Each of these circuits

has its own expansion tank in the engine

compartment for the coolant.

environmentally

dispose of it properly and in an

friendly manner.

Only carry out work on the engine cooling

system yourself if you are familiar with the

necessary operations and the generally

applicable safety measures and if you have the

appropriate tools, equipment and operating

fluids at your disposal. Improperly performed

work can result in serious injuries.

Engine coolant specifications

Please note and , on page 313, and

see page 3 25 at the beginning of this chapter, page

32 5.

see → . If necessary, have all work carried

out

by a specialist workshop. Volkswagen

recommends that you visit a Volkswagen dealer

for this.

A mixture of specially treated water and at least

40 % of the coolant additive G 13 (TL-VW 774

J) is added to the engine cooling system and

the cooling circuit of the high-voltage system

ex-factory. This additive is recognisable by its

lilac colouring. This mixture of water and coolant

additive not only provides anti-freeze protection

down to -25 °C (-13 °F), but also protects the

light alloy parts of the engine cooling system

against corrosion. In addition, it prevents

limescale deposits and significantly increases

the boiling point of the coolant.

WARNING

Coolant is toxic!

● Store the coolant only in the original

container, tightly closed and in a safe

place.

● Never store coolant in empty food cans,

bottles or other similar containers, as it

could be ingested by someone else.

● Keep coolant out of the reach of children.

To protect the cooling system of the engine, the

additive percentage should always be at least 40

%, even when the weather or climate is warm

and no anti-freeze protection is necessary.

● Ensure that the percentage of coolant

additive is correct, taking into account the

lowest expected ambient temperature at the

location where the vehicle is to be used.

If increased antifreeze protection is required for

climatic reasons, the proportion of additive may

be increased. However, only up to a maximum

of 60 %, otherwise the anti-freeze protection

would be reduced and the cooling effect would

be impaired.

● If the outside temperature is extremely low,

the coolant may freeze and the vehicle

may be immobilised. As the heating would

not work in this case either, insufficiently

warm occupants could freeze to death.

When replenishing the coolant in the engine,

use a mixture of distilled water and at least 40

% of the coolant additive G 13 or G 12 plus-

plus (TL -TL-).

VW 774 G) (both lilac-coloured) for optimum

corrosion protection → . The mixture of G 13

with the coolants of the

WARNING

If work on the high-voltage system and high-

voltage components is carried out incorrectly,

this can lead to malfunctions, accidents and

injuries.

engine G 12 plus (TL-VW 774 F), G 12 (from

Check and replace

325

G 11 (red coloured) or G 11 (blue-green

coloured) significantly impairs corrosion

protection and should therefore be avoided →

Check engine coolant level and top

up coolant

.

WARNING

Please note and , on page 313, and

see page 325 at the beginning of this chapter, page 325.

If the engine cooling system does not have

sufficient anti-freeze protection, the hybrid

drive system could fail, resulting in serious

injury.

● Ensure that the percentage of coolant

additive is correct, taking into account the

lowest expected ambient temperature at the

location where the vehicle is to be used.

● If the outside temperature is extremely low,

the coolant may freeze and the vehicle

may be immobilised. As the heating would

not work in this case either, insufficiently

warm occupants could freeze to death.

NOTICE

Never mix the original additives for lithium-rich

liquids with the original additives.

The engine coolant must be used with engine

coolants that have not been approved by Volks-

wagen. Otherwise there is a risk of serious

damage to the engine and its cooling system.

● If the liquid in the expansion tanks is not

pink (resulting from mixing the lilac additive

with distilled water), but brown, for example,

then the additive G 13 has been mixed with

an unsuitable coolant, in which case the

coolant must be replaced immediately. In this

case, the coolant must be replaced

Fig. 248 In the engine compartment: Markings on

the engine coolant expansion tank and Markings

on the high-voltage system coolant expansion tank

(schematic representation).

immediately, otherwise serious malfunctions

or engine damage may result!

Engine coolant and its additives can pollute

the environment.

If any operating fluid leaks, collect it and dispose

of it properly and in a respectful manner with

the environment.

Fig. 249 In the engine compartment: Engine coolant

expansion tank cap (schematic representation)

.

326

Instruction manual

When the engine coolant level is too low, the

coolant warning lamp comes on.

– Only add coolant if there is still some coolant

in the expansion tank, otherwise the mo- tor

or the cooling system of the high-voltage

system could be damaged! If you do not see

any coolant in the expansion tank, do not

continue driving and call in a qualified person

for assistance.

In addition to the functions and technology

described above, hybrid vehicles differ from

non-hybrid vehicles in other ways.

Previous steps

– If there is still some coolant in the expansion

tank, add coolant until the level stabilises.

– Park the vehicle on a firm horizontal surface.

Wait for the engine to cool down →

.

–

– The coolant level must be within the markings

on the expansion tank → fig. 248 . Never

– Open the engine bonnet → page 313.

– The engine coolant expansion tank can be

recognised by the symbolon the cover → fig.

248 .

upper

of the marked area

exceed the

edge

→

.

– Screw the lid on tightly.

– The coolant expansion tank of the high-

voltage system cooling system is located on

the right-hand side of the engine

compartment under a cover.

– If you do not have coolant with the

prescribed specifications → p. 325 available in

an emergency, do not use any other coolant

use only distilled

additives! In this case,

→ fig. 248 .

water → . Then

add the prescribed additive

Removing the engine compartment cover re-

requires a certain amount of manual skill. In

case of uncertainty, Volkswagen therefore

recommends that you visit a Volkswagen dealer

for dismantling or seek professional help.

in the correct ratio → page 325 as soon as

possible.

WARNING

The steam or coolant from the engine can

cause severe burns.

Check coolant level

● Never open the engine bonnet if you see or

hear vapour or coolant escaping from the

engine compartment. Always wait until you

no longer see or hear vapour or coolant

escaping.

– When the engine is cold, check the coolant

level at the marks on the side of the

expansion tanks → fig. 248 and . The

coolant level must be within the markings.

– If the level is below the "MIN" mark on the

reservoir, add engine coolant. When the

engine is warm, the coolant level may slightly

exceed the MAX mark.

● Always wait until the engine has cooled

down completely before opening the engine

bonnet carefully. Touching hot parts can

cause burns to the skin.

Replenish coolant

● When the engine has cooled down, observe

the following before opening the engine

bonnet:

– Engage the electronic parking brake and

move the selector lever to the P

position.

– Always protect your face, hands and arms

from hot coolant or steam by placing a

suitable cloth over the expansion tank cap.

Carefully unscrew the cover →

.

–

– Only add new coolant according to Volks-

wagen → p. 325 →

– Switch off the ignition and remove the key

from the ignition lock.

.

specifications

– Always keep children away from the

engine compartment and never leave

them unattended.

● When the engine is hot, its cooling system is

under pressure. Never open the cap of the

engine coolant expansion tank when the

Check and replace

327

engine is hot. Failure to do so could result in

coolant splashing and cause serious burns

and other injuries.

– Turn the cover slowly and carefully

anticlockwise and at the same time

exert light pressure on the cover.

● When replenishing operating fluids, make sure

that you use the correct fluids in the correct

filler ports. Using the wrong operating fluids

can lead to serious malfunctions and engine

damage

.

– Always protect your face, hands and

arms from hot coolant or steam with a

large, thick cloth.

Brake fluid

● When replenishing operating fluids, avoid

getting them on engine components or the

exhaust system. These fluids could cause a

fire. Under certain circumstances, ethylene

glycol in the engine coolant can ignite.

NOTICE

● Use only distilled water! All other

water types contain chemicals that could

cause considerable corrosion damage to the

engine. This could lead to engine failure. If

non-distilled water has been added, have the

entire engine cooling system fluid changed

immediately by a specialised workshop.

Fig. 250 In the engine compartment: Brake fluid

reservoir cap.

Brake fluid absorbs moisture from the air over

time. Excessive water content in the brake fluid

causes damage to the brake system. The

boiling point of the brake fluid is significantly

reduced by the effect of water. If the water

content in the brake fluid is too high, vapour

bubbles may form in the brake system if the

brakes are subjected to high stresses or during

heavy braking. The bubbles reduce the braking

power, increase the braking distance

● When adding engine coolant, do not re-base

the upper edge of the marked area.

→ Otherwise, when the temperature rises,

the excess liquid will be expelled from the

engine cooling system and may cause

damage.

● If the system is leaking significant amounts

of coolant, only replenish coolant after the

engine has cooled down completely. If the

loss of coolant is significant, there may be

leaks in the engine cooling system.

Immediately have the system checked by a

specialist workshop, otherwise the engine

could be damaged!

considerably and can even lead to failure of the

entire brake system. The safety of yourself and

other road users depends on the correct

braking

→

functioning of the

.

system at all times

● Do not add coolant if the expansion tank is

completely empty! Air could enter the

cooling system. Do not continue driving and

call for qualified personnel, otherwise the

engine could be damaged!

Brake fluid specifications

Volkswagen has developed a special brake fluid

optimised for the vehicle's brake system. To

ensure optimum function of the brake system,

Volkswagen expressly recommends the use of

brake fluid in accordance with VW 501 14.

Before using a brake fluid, it should be checked

whether the specifications of the brake fluid, as

stated on the container, meet the requirements of

the vehicle.

328

Instruction manual

Brake fluid complying with VW standard 501

14 is available from Volkswagen dealers.

WARNING

If the brakes fail or their braking power is

reduced, the brake fluid level may be too low

or the fluid itself may be too old or inadequate.

If such a brake fluid is not available and a

different high-quality brake fluid must be used, a

brake fluid that meets the requirements of DIN

ISO 4925 CLASS 4 or the US standard FMVSS 116

DOT 4 can be used.

● Have the brake system and brake fluid level

checked regularly!

● Have the brake fluid changed regularly.

Not all brake fluids that meet the requirements

of DIN ISO 4925 CLASS 4 or the US standard

FMVSS 116 DOT 4 have the same chemical

composition. Some of these brake fluids may

contain chemical substances which, over time,

can destroy or damage parts of the vehicle's

brake system.

● If the brake fluid is old and the brakes are

heavily used, vapour bubbles may form.

Bubbles reduce the braking power,

considerably increase the braking distance

and can lead to failure of the entire brake

system.

● Always use the correct brake fluid. Only

use brake fluid that expressly complies

with VW standard 501 14.

Volkswagen therefore recommends the use of

brake fluid that explicitly complies with VW

501 14 in order to ensure that the brake

system functions correctly in the long term.

● The use of any other or non-premium brake

fluid may impair the performance of the

brakes and reduce their stopping power.

Brake fluids in accordance with VW 501 14

comply with the requirements of the standard

DIN ISO 4925 CLASS 4 and the US standard

FMVSS 116 DOT 4.

● If a brake fluid in accordance with VW 501

14 is not available, a high-quality brake

fluid that meets the requirements of DIN ISO

4925 CLASS 4 or the US standard FMVSS

116 DOT 4 may be used as an exception.

Brake fluid level

Brake fluid level is too low.

● The brake fluid used shall be new.

do bajo. Do not continue the march! Com-

test the brake fluid level.

The brake fluid level must always be between

the MIN and MAX marks on the brake fluid

MIN mark →

.

reservoir, i.e. above the

It is not always possible to check the brake fluid

level, as on some models the engine

WARNING

components make it impossible to see the fluid

level in the reservoir. If the brake fluid level

cannot be accurately determined, specialist

assistance should be sought.

Brake fluid is toxic.

● To reduce the danger of poisoning, never

use beverage bottles or other containers to

store brake fluid. These containers could be

confusing and someone could drink their

contents, even if they are marked

accordingly.

The brake fluid level decreases slightly during

driving due to wear of the brake pads and

automatic brake readjustment.

● Always store brake fluid in the original

container, tightly closed and out of the

reach of children.

Change brake fluid

Have your brake fluid changed by a brake fluid specialist.

specialised dealer. Volkswagen recommends that

you visit a Volkswagen dealer for this. Always

have new brake fluid filled that meets the

required specifications.

Check and replace

329

Charging the 12-volt battery creates a

highly explosive mixture of detonating

gases!

Keep children away from the 12-volt

battery electrolyte and the battery at all

times!

NOTICE

Brake fluid will damage vehicle paintwork,

plastic parts and tyres if it comes into contact

with them. If brake fluid spills or leaks onto

vehicle parts, wipe it up immediately.

Brake fluid can contaminate the

environment. If any brake fluid leaks

operational, pick it up and dispose of it properly.

Always observe the operating

instructions!

WARNING

Work on the 12-volt battery and the electrical

system can cause severe burns, fire and

electric shock. Always read and observe the

following warnings and safety precautions

before working on the battery:

12-volt battery

● Before working on the 12-volt battery,

switch off the ignition and disconnect all

the

Introduction to the topic

the electrical consumers, and disconnect the

negative cable of this battery.

The 12-volt battery is part of the electrical

system and provides the vehicle's power supply.

● Always keep children away from the 12-

Only carry out work on the electrical system

yourself if you are familiar with the necessary

operations and the generally applicable safety

measures and if you have the correct tools,

materials and operating fluids at your disposal.

volt battery electrolyte and the battery.

● Always wear eye protection and protective

gloves.

● Battery electrolyte is very aggressive. It

can cause skin and eye burns. When

can result

Improperly performed work

in

handling

the

12-volt

battery,

be

serious injuries → . Have

all work carried out

particularly careful to protect your hands,

arms and face from acid splashes.

by a specialist workshop. Volks- wagen

recommends that this work be carried out by a

Volkswagen dealership.

● Do not smoke while carrying out work and

never carry out work in the vicinity of naked

flames or in places where sparks may occur.

Location of the 12-volt battery

● Avoid sparks from electrostatic discharges,

as well as when handling cables and

electrical devices.

The 12-volt battery is located under the left-

hand front seat. The 12-volt battery can only be

accessed with special knowledge and tools.

Therefore, have any necessary work on the 12-

volt battery carried out by a specialist

workshop.

● Never short-circuit the battery terminals.

● Never use 12-volt batteries which are

damaged. They could explode. If the 12-volt

battery is damaged, replace it immediately.

Volkswagen recommends a Volkswagen

dealership for this.

● If the 12-volt battery is damaged or has

frozen, replace it immediately. When the

battery is discharged, it may freeze at

temperatures near freezing.

Explanation of the warning symbols on the

12-volt battery

Always wear eye protection!

0 °C (+32 °F).

Battery electrolyte is highly corrosive.

Always wear protective gloves and eye

protection!

It is forbidden to light a fire, to cause

sparks, to use an unprotected flame or to

use a naked flame.

● If the vehicle has the 12-volt battery in the

luggage compartment, make sure that the

flexible degassing tube is correctly

attached to the battery.

sea!

330

Instruction manual

Charge, replace and disconnect or

connect the 12-volt battery.

NOTICE

● Do not expose the 12-volt battery to direct

sunlight.

Note

and on page 313, and

The housing may be damaged by prolonged

direct sunlight because ultraviolet rays may

damage the housing.

and

at the

beginning of this chapter on page 330.

If you suspect that the 12-volt battery is

damaged or defective, have it checked by a

qualified specialist workshop.

● If the vehicle is not to be used for a period

of time, protect the 12-volt battery from

frost so that it does not freeze and become

damaged as a result.

Charging the 12-volt battery

After running the engine with the 12-volt

battery deeply discharged

If the battery is freshly changed or after using the

start-up aid, some system settings (such as time,

date, customised comfort settings and

To charge the 12-volt battery, please contact a

specialist workshop, as the battery model fitted

in the vehicle from the factory uses a special

limited

technology that requires a

voltage → . Volkswagen recommends that

you

charging

programmes) may have been misadjusted or

deleted. Check and correct these settings once

visit a Volkswagen dealer for this.

charged

the battery is sufficiently

.

Replace the 12-volt battery

This battery is designed for its location and is

equipped with safety features. If the battery

needs to be replaced, please contact your

Volks- wagen dealer before purchasing a new

battery to find out about its electromagnetic

compatibility, size and the necessary

maintenance, performance and safety

requirements.

Check the electrolyte level of the

12-volt battery.

Note

and on page 313, and and

330.

at the

beginning of this chapter on page

Only 12-volt, maintenance-free batteries

complying with the following standards may be

used

TL 825 06 and VW 7 50 73. These standards

have to be July 2012 or later.

In the case of vehicles with Start-Stop system

or independently heated vehicles

→ p. 153, always have the 12-volt battery

replaced by a qualified specialist workshop, as

the vehicle's electronics must be adapted when

replacing the battery. Only properly qualified

specialist workshops have the appropriate

technology to carry out the retrofitting

correctly. Volkswagen recommends having the

battery replaced by a Volkswagen dealer.

Fig. 251 Sight glass on top of the 12-volt battery

(schematic representation).

Disconnect and connect the 12-volt

battery.

The 12-volt battery is located under the left-

hand front seat. The 12-volt battery can only be

accessed with special knowledge and tools. The

12-volt battery's electrolyte level should

therefore be checked by a specialist workshop.

Volkswagen recommends that the following be

carried out

The 12-volt battery is located in the floor of

the passenger seat under a bolted cover. The

battery can be accessed by

some parts of must be dismantled beforehand

to a Volkswagen dealer.

Check and replace

331

vehicle. If the 12-volt battery is to be

disconnected and re-installed, a qualified

specialist workshop should be consulted.

Factors that cause the 12-volt battery to

discharge

– Prolonged stops without starting the engine,

especially if the ignition is left switched on.

After connecting the 12-volt battery and

switching on the ignition, various indicator lights

may come on. These warning lights go out after

a short journey at a speed of approx. 15 to 20

km/h (10 to 12 mph). If the warning lights do not

go out, visit a specialist workshop and have the

vehicle checked.

– Use of electrical consumers with the engine

switched off.

– Independent heating in operation

→

p. 153.

WARNING

If the 12-volt battery has been disconnected

for a long period of time, it is likely that the

next service → p. 24 will not be displayed or

calculated correctly.

If the 12-volt battery is incorrectly fitted or

unsuitable batteries are used, short circuits, fire

and serious injury may result.

● Use only 12-volt, maintenance-free, non-

spillable batteries with the same properties,

specifications and dimensions as the

factory-fitted battery.

→

p. 366.

Vehicles with Keyless Access → p. 91: If the

ignition does not switch on after the 12-volt

battery has been connected, lock and unlock the

vehicle from the outside. Then try switching the

ignition on again. If the ignition does not switch

on, seek the assistance of qualified personnel.

● If the vehicle is fitted with the 12-volt

battery in the luggage compartment,

ensure that the flexible venting tube is

correctly attached to the 12-volt battery.

Make sure that there is no open vent hole

in the area of the positive terminal. If there

is an open degassing hole in this area,

close it with a plug. The degassing hose

must be attached to the open degassing

hole in the negative pole area.

Automatic disconnection of consumers

In the event of excessive demand on the 12-volt

battery, the intelligent on-board network

management system automatically takes

measures to prevent the battery from

discharging:

– The idle speed is increased so that the

alternator supplies more current.

– If necessary, the output of the most

powerful consumers is limited or, in an

emergency, they are switched off

completely.

WARNING

When the 12-volt battery is charged, a highly

explosive mixture of detonating gases is

produced.

– When the engine is started, the power

supply from the 12-volt socket and cigarette

lighter may be briefly interrupted.

● The 12-volt battery should only be charged

in a well-ventilated area.

● Never charge a 12-volt battery that is

frozen or has been disconnected. When the

battery is discharged, it may freeze at

temperatures approaching 0 °C (+32 °F).

The on-board network management cannot

always prevent the 12-volt battery from

discharging. This is the case if, for example, the

ignition is left on or the position or parking lights

are left on for a long time when the engine is

switched off.

● If the 12-volt battery has frozen, replace

it without fail.

● If the wires are connected to the poles

incorrectly, a short-circuit may occur. The

positive cable must be connected first, then

the negative cable.

332

Instruction manual

Check and replace for Your Volkswagen Touareg SUV Third Generation (2018-2025)

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