check engine VOLKSWAGEN UP! 2021 Owner´s Manual

than the engine requires. However, this does not provide any advantage in terms of fuel
consumption or engine output.
Volkswagen recommends using fuel with a low sulphur content or sulphur-free fuel for petrol
engines in order to achieve reduced fuel consumption.
Petrol additives
The quality of petrol influences the running properties, performance and service life of the engine.
This is why the vehicle should be refuelled with good quality petrol that has only non-metallic
additives pre-added by the petroleum industry. These petrol additives help to prevent corrosion,
keep the fuel system clean, and prevent the build-up of deposits in the engine.
If good quality petrol containing non-metallic additives is not available, or if engine problems arise,
the necessary petrol additives must be added to the petrol when refuelling ⇒.
Not all petrol additives are effective. The use of unsuitable petrol additives can cause considerable
damage to the engine and catalytic converter. Metallic additives should be avoided at all times.
Petrol additives on sale that are intended to improve knock resistance or increase the octane
number can also contain metallic additives ⇒.
Volkswagen recommends genuine Volkswagen or Audi fuel additives for petrol engines. These
additives and information on how to use them are available from your Volkswagen dealership.
Natural gas engines
Run the petrol tank empty every 6 months until the indicator lamp  lights up. This is necessary to
maintain the required system function for petrol mode and fuel quality.
Natural gas
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Natural gas
Natural gas can be delivered in compressed or liquefied form.
Liquefied Natural Gas (LNG) is produced by rapid cooling of the natural gas. This decreases the
volume considerably in comparison to Compressed Natural Gas (CNG). A vehicle equipped with a
natural gas engine may not be refilled directly with liquefied natural gas as the gas would expand
too much once in the tank in the vehicle.
Vehicles fitted with a natural gas engine may therefore only be refilled and driven using
compressed natural gas ⇒.
Natural gas quality and consumption
Natural gas is available in two grades: H-gas and L-gas.
H-gas has a higher calorific value and a lower nitrogen and carbon dioxide content. The higher the
calorific value of the natural gas the lower the levels of consumption.
The calorific value and the nitrogen or carbon dioxide values may, however, vary within one quality
group. For this reason, the vehicle consumption may vary when using natural gas of the same
quality.
•Before filling up with petrol, check whether the fuel corresponds to the vehicle's
requirements according to the fuel standard information at the pump.
•Only use fuel that complies with EN 228 or DIN 51626-1 and has the correct octane
number. Otherwise, the engine and the fuel system can suffer considerable damage. The
engine can also lose power or fail.
•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
recommended 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.
•Fuels that are identified at the fuel pump as containing metallic additives may not be used.
LRP fuel (lead replacement petrol) also contains high concentrations of metallic additives.
Risk of engine damage!
•Just one tankful of leaded fuel, or fuel containing other metallic additives, can seriously
impair the efficiency of the catalytic converter and can also cause considerable damage to
the catalytic converter and engine.
NOTICE

The vehicle engine management will automatically adapt to the different natural gas qualities. Both
natural gas qualities can therefore be mixed in the fuel tank. You do not need to empty the tank
before refuelling with a different grade.
Natural gas
The vehicle can run on natural gas. Further information is available from your local Volkswagen
dealership.
Safe handling of natural gas
If you can smell gas or think there may be a leak in the natural gas system ⇒:
•Stop the vehicle immediately.
•Switch off the ignition.
•Open all the doors to fully ventilate the vehicle.
•Extinguish cigarettes immediately.
•Remove items that could cause sparks or fire from the vehicle or switch them off.
•Do not drive on if you can still smell gas.
•Seek expert assistance. Have the fault rectified.
Have the natural gas system checked regularly according to the service schedule by a
qualified workshop.
In the engine compartment
Preparation for working in the engine compartment
 Introduction
This chapter contains information on the followingsubjects:
⇒ Preparing the vehicle for working in the engine compartment
⇒ Opening and closing the bonnet
Always park the vehicle on a level and stable surface 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 ⇒ Exterior views
•Windscreen wiper/washer ⇒ Windscreen wiper and washer
•Starting and stopping the engine ⇒ Starting and stopping the engine
•Brake fluid ⇒ Braking, stopping and parking
•Checks when filling the tank ⇒ Filling the tank
•Engine oil ⇒ Engine oil
•Engine coolant ⇒ Coolant
•Battery ⇒ Vehicle battery
•Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs
and renewal of parts
Ignoring the smell of gas in the vehicle or when refuelling can cause serious injuries.
•Take any necessary action.
•Leave the area of risk.
•Contact the emergency services if necessary.
WARNING
Your vehicle is not suitable for use with Liquefied Natural Gas and must not be filled up or
driven with Liquefied Natural Gas. Liquefied Natural Gas can cause an explosion in the
natural gas tank and serious injuries as a consequence.
WARNING
Cleaning and maintenance

Park the vehicle on a level and stable surface.
Depress and hold the brake pedal until the engine has stopped.
Apply the handbrake firmly Braking, stopping and parking.
Select the neutral position or move the selector lever to N Changing gear.
Stop the engine and remove the vehicle key from the ignition Starting and stopping the
engine.
Allow the engine to cool sufficiently.
Children and other people should be kept well away from the engine compartment.
Ensure that the vehicle cannot roll away unexpectedly.
Service fluids leaks are harmful to the environment. So you should regularly check the
ground underneath your vehicle. If there are spots of oil or other fluids on the ground, the vehicle
should be inspected by a qualified workshop. Any spilt service fluids must be disposed of properly.
Preparing the vehicle for working in the engine compartment
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Checklist
The following steps should always be carried out in the specified order before working in the
engine compartment ⇒:
There are rotating components in the engine compartment that can cause serious injury.
•Never place your hand near or directly in the radiator fan. Touching the rotary blades can
result in serious injuries. The fan is temperature-controlled and can start automatically,
even if the engine has been switched off and the vehicle key has been removed from the
ignition lock.
•If any work has to be performed when the engine is started or with the engine running,
there is an additional, potentially fatal, safety risk from the rotating parts, such as the drive
belts, alternator, radiator fan, etc., and from the high-voltage ignition system. Always be
particularly careful.
- Always ensure that no body parts, jewellery, ties, loose items of clothing or long hair
can be caught up in rotating engine components. Before starting work, remove any
jewellery and ties, tie up long hair and pull clothes in tightly to avoid them getting
caught in the engine compartment.
- Always depress the accelerator carefully and never without due consideration. The
vehicle can start to move even if the handbrake is applied.
•Always ensure that you have not left any objects, such as cleaning cloths and tools, in the
engine compartment. Any forgotten items can cause malfunctions, engine damage and
fires.
WARNING
Operating fluids and some materials in the engine compartment are highly flammable and can
cause fires and serious injuries!
•Never smoke while working on the vehicle.
•Never work near naked flames or sparks.
•Never spill fluids onto the engine. They could ignite on hot engine components and hence
cause injuries.
•Please note the following when carrying out any work on the fuel system or the electrical
system:
- Always disconnect the vehicle battery.
- Never work in the direct proximity of heating systems, water heaters or any other
open flames.
•Always have a fully functional and tested fire extinguisher to hand.
WARNING
When refilling or changing operating fluids please ensure that the fluids are in the correct
container. Incorrect operating fluids can cause serious functional problems and engine
damage.
NOTICE

Engine oil
 Introduction
This chapter contains information on the followingsubjects:
⇒ Warning and indicator lamps
⇒ Engine oil specification
⇒ Checking the engine oil level and refilling engine oil
⇒ Engine oil consumption
⇒ Changing engine oil
Additional information and warnings:
•⇒BookletService schedule,
•Preparation for working in the engine compartment ⇒ Preparation for working in the engine
compartment
•Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs
and renewal of parts
Leaking or spilt engine oil can pollute the environment. Spilt operating fluids must be
collected and disposed of properly and with respect for the environment.
Warning and indicator lamps
First read and observe the introductoryinformation and safety warnings⇒
Introduction
FlashesPossible causeSolution
Engine oil pressure is too low.
Do not drive on!
Switch off the engine. Check the engine oil
level.⇒ Checking the engine oil level and
refilling engine oil
– Do not drive on or remain at idling speed
if the warning lamp is flashing, even if the
engine oil level is correct. The engine could
otherwise be damaged. Seek expert
assistance.
Engine oil specification
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The engine oil used must correspond exactly to specifications.
The correct engine oil is important for the function and service life of the engine. A special high
quality multigrade oil has been filled at the factory and this can normally be used as an all-season
oil.
Incorrect handling of engine oil can cause serious burns and injuries.
•Always wear eye protection when handling engine oil.
•Engine oil is toxic and must be stored out of the reach of children.
•Engine oil must be kept in the closed original container. This also applies to used oil until it
is disposed of.
•Never use empty food containers, bottles or other containers to store engine oil as other
people may then drink the engine oil.
•Regular contact with engine oil can damage the skin. Skin that has been in contact with
engine oil should be washed thoroughly with water and soap.
•Engine oil becomes extremely hot when the engine is running and can scald skin severely.
Always allow the engine to cool down.
WARNING
Failure to observe the warning lamps could lead to your vehicle breaking down in traffic, and
to accidents and serious injuries.
•Never ignore any warning lamps that are lit up.
•Stop the vehicle as soon as possible and when safe to do so.
WARNING
Failure to observe the illuminated indicator lamps could lead to the vehicle being damaged.
NOTICE

If possible, only use Volkswagen-approved engine oil ⇒. The engine oils listed are multigrade
high-lubricity oils.
Engine oils are constantly being developed and improved. A Volkswagen dealership is always kept
up to date on innovations. Volkswagen therefore recommends having engine oil changes done by a
Volkswagen dealership.
The quality of the engine oil is not only tailored to the requirements of engines and exhaust gas
treatment systems, but also to fuel quality. Due to the way in which a combustion engine works,
engine oil always comes into contact with combustion residues and fuel, which has a knock-on
effect on the ageing process of the oil.
The quality of fuels can vary greatly between individual markets and this must be taken into account
when selecting the correct engine oil.
The use of engine oils compliant with the VW 504 00 requires a fuel quality compliant with EN 228
(petrol) or fuel of and equivalent quality. Engine oils compliant with VW 504 00 are therefore
unsuitable for use in a large number of markets.
Permitted engine oil
specifications ⇒
Alternative engine oil
specifications⇒
Engine
type
Fixed service QI1, QI2, QI3,
QI4, QI7 (based on
time/distance travelled)
Only in the EU, Switzerland,
Norway, Japan and Australia
Petrol
enginesVW 502 00VW 504 00
Natural gas
engineVW 502 00-----
Alternative engine oil specifications may only be used in fixed services QI1, QI2, QI3, QI4 and
QI7, and only when fuel of a quality compliant with EN 228 (petrol), or fuel of an equivalent quality,
is available in the particular country.
Checking the engine oil level and refilling engine oil
Fig. 121 Oil dipstick with markings
Fig. 122 In the engine compartment: engine oil filler cap
First read and observe the introductoryinformation and safety warnings⇒
Introduction
a)
•Do not add any additional lubricants to the engine oil. Any damage caused by the use of
such additives is not covered by the warranty.
•Only engine oil specifications that have been approved for use with the engine should be
used. Using other engine oils can cause engine damage.
•Another engine oil can be used in the event of an emergency if the listed engine oils () are
not available. To avoid damaging the engine, a maximum quantity of 0.5 litres of the
following engine oil may be used only once until the next oil change:
- Petrol engines: standards ACEAA3/B4 or API SN (API SM).
NOTICE
a)

With the engine at operating temperature, park the vehicle on a level surface to ensure
that the engine oil reading is correct.
Switch off the engine and wait a few minutes for the engine oil to flow back into the sump.
Open the bonnet .
Identify the engine oil filler cap and oil dipstick. The engine oil filler opening bears the
symbol  on the cap and the oil dipstick has a coloured handle. If you cannot find the cap
and dipstick please contact a qualified workshop.
Pull the dipstick out of the guide tube and wipe it off with a clean cloth.
Insert the oil dipstick into the guide tube again as far as it will go. If there is a marking on
the oil dipstick, this marking must fit in the corresponding groove at the top end of the
guide tube when inserting.
After reading the oil level, push the oil dipstick back into the guide tube as far as it will go.
Unscrew the engine oil filler opening cap .
Using only the engine oil approved by Volkswagen expressly for this engine, top up the oil
in small gradual amounts (no more than 0.5 l).
To avoid overfilling, wait for approximately one minute after each pour to allow the engine
oil to flow into the oil sump up to the marking on the engine oil dipstick.
Read the engine oil level from the dipstick again before refilling with a further small
quantity of engine oil. Never overfill engine oil .
After the refilling procedure, the engine oil level should be at least in the centre of area Ⓑ,
but never above area Ⓐ .
After refilling, screw the engine oil filler cap back on correctly.
Reinsert the oil dipstick correctly into the guide tube as far as it will go.
Close the bonnet correctly .
Checklist
Carry out the steps in the specified order ⇒:
Pull the dipstick out again and read the engine oil level on the dipstick as follows: Ⓐ: do not
refill oil . Proceed to step 15. Ⓑ: oil can be refilled (approximately 0.5 l). Proceed to step 8
or 15. Ⓒ: oil must be refilled (approximately 1.0 l). Proceed to step 8.
The engine oil level must never be above area ⇒ Fig. 121Ⓐ. Otherwise oil can be drawn in
through the crankcase breather and escape into the atmosphere via the exhaust system.
Engine oil consumption
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Engine oil consumption can vary from engine to engine and can change during the working life of
an engine.
Depending on how you drive and the conditions in which the car is used, oil consumption can be up
to 1.0 litre/2,000 km – and is likely to be higher for the first 5,000 km for new vehicles. 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 the area shown in ⇒ Fig. 121Ⓐ,
for instance during long motorway cruising in summer or climbing mountain passes.
Engine oil can ignite if it comes into contact with hot engine components. It can cause fires,
burns and other serious injuries.
•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 components when the engine is running.
WARNING
•Do not start the engine if the engine oil level is above area ⇒ Fig. 121Ⓐ. Seek expert
assistance. The catalytic converter and the engine could otherwise be damaged.
•When refilling or changing operating fluids please ensure that the fluids are in the correct
container. Incorrect operating fluids can cause serious functional problems and engine
damage.
NOTICE

Changing engine oil
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The engine oil must be changed regularly in accordance with the data given in the service
schedule.
The engine oil and filter should always be changed, and used oil disposed of, by a qualified
workshop due to the special tools and knowledge required. Volkswagen recommends using a
Volkswagen dealership for this purpose.
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.
Before changing the engine oil, first find out where old oil can be disposed of properly near
you.
Used oil must be disposed of in accordance with regulations governing the protection of the
environment. Never dispose of old oil in locations such as gardens, woods, sewerage systems, on
streets and roads, or in rivers and waterways.
Coolant
 Introduction
This chapter contains information on the followingsubjects:
⇒ Warning lamp for coolant
⇒ Coolant specification
⇒ Checking the coolant level and refilling coolant
Never carry out any work on the engine coolant system if you are not familiar with the requisite
procedures, or if you do not have access to the correct tools, operating equipment and fluids ⇒.
The work should be carried out by a qualified workshop if you are uncertain. Volkswagen
recommends using a Volkswagen dealership for this purpose.
Serious injuries can be caused if work is carried out incorrectly.
Additional information and warnings:
•Preparation for working in the engine compartment ⇒ Preparation for working in the engine
compartment
•Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs
and renewal of parts
If, in exceptional cases, you have to carry out an oil change yourself, please note the
following:
•Always wear eye protection.
•Always allow the engine to cool down completely to avoid burns.
•Keep your arms horizontal when removing the oil drain plug with your fingers to help
prevent oil from running down your arm.
•Use a suitable container when draining the used oil. It must be at least large enough to
hold the entire quantity of engine oil required for refilling.
•Never store engine oil in empty food containers, bottles or any other non-original
containers as people finding these containers may not know that they contain engine oil.
•Engine oil is toxic and must be stored out of the reach of children.
WARNING
Engine coolant is toxic.
•Engine coolant should only be kept in sealed original containers in a safe place.
•Never store engine coolant in empty food containers, bottles or any other non-original
containers as people finding these containers may then drink the engine coolant.
•The engine coolant must be stored out of the reach of children.
•Please note that the amount of correct coolant additive used must be sufficient for the
lowest ambient temperature that you expect the vehicle to be exposed to.
•Coolant can freeze at extremely cold outside temperatures, causing the vehicle to break
down. Vehicle occupants with inadequate winter clothing could then freeze to death as the
heating will also no longer function.
WARNING

Coolant and coolant additives can pollute the environment. Spilt operating fluids must be
collected and disposed of properly and with respect for the environment.
Warning lamp for coolant
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Several warning and indicator lamps will light up briefly as a functional check when the ignition is
switched on. They will switch off after a few seconds.
Lit upPossible causeSolution
Engine coolant temperature is
too low in vehicles with natural
gas engine.
Avoid high engine speeds and heavy engine loads.
FlashesPossible causeSolution
Coolant temperature too high.
Do not drive on!
Stop the vehicle as soon as possible, and when
safe to do so. Switch off the engine, leave the
engine to cool down.
Coolant level too low.
Do not drive on!
After the engine has cooled down, check the
coolant level and refill engine coolant if the level is
too low ⇒ Checking the coolant level and refilling
coolant.
With display --.- in the
instrument cluster:
fault in the engine cooling
system.
Do not drive on!
Seek expert assistance.
In some vehicles, the coolant temperature display may be displayed on the screen of the
portable navigation device (delivered by Volkswagen) ⇒ Accessories, modifications, repairs and
renewal of parts.
Coolant specification
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The cooling system is filled at the factory with a mixture of specially prepared water and at least
40% coolant additive G 13 (TL-VW 774 J). The coolant additive is dyed purple. This mixture of
water and coolant additive gives the necessary frost protection down to -25°C (-13°F) and protects
the alloy parts of the cooling system against corrosion. The mixture also prevents scaling and
raises the boiling point of the coolant.
In order to protect the coolant system, the proportion of coolant additive must always be at least
40%, even if anti-freeze is not required in warm weather and warm climates.
If greater frost protection is required in very cold climates, the proportion of anti-freeze additive can
be increased. However, the percentage of coolant additive should not exceed 60%, as this would
reduce the frost protection and the cooling effect.
When topping up the coolant, a mixture of distilled water and at least 40% coolant additive - G 13 -
or - G 12 plus-plus - (TL-VW 774 G) (both of which are dyed purple) must be used in order to obtain
the optimum corrosion protection ⇒. Mixing - G 13 - with the coolant additives - G 12 plus - (TL-
VW 774 F), - G 12 - (dyed red) or - G 11 - (dyed blue-green) will significantly decrease the level of
corrosion protection and should therefore be avoided ⇒.
Failure to observe the warning lamps could lead to your vehicle breaking down in traffic, and
to accidents and serious injuries.
•Always observe any warning lamps that are lit up.
•Never ignore any warning lamps that are lit up.
•Stop the vehicle as soon as possible and when safe to do so.
WARNING
Failure to observe the illuminated indicator lamps could lead to the vehicle being damaged.
NOTICE

Coolant and coolant additives can pollute the environment. Spilt operating fluids must be
collected and disposed of properly and with respect for the environment.
Checking the coolant level and refilling coolant
Fig. 123 In the engine compartment: marking on the coolant expansion tank
Fig. 124 In the engine compartment: coolant expansion tank cap
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The warning lamp for the engine coolant will light up if the engine coolant level is too low.
Preparation
•Park the vehicle on a firm and level surface.
•Allow the engine to cool down ⇒.
•Open the bonnet ⇒ .
•The coolant expansion tank has the symbol on its cap ⇒ Fig. 124.
Checking the coolant level
•Check the coolant level at the side marking of the expansion tank when the engine is cold
⇒ Fig. 123.
•Refill the coolant if the liquid level is below the minimum marking (min). When the engine is
warm, the coolant level may be slightly above the top end of the marked area.
Refilling coolant
•Always protect your hands and arms from hot coolant or steam by placing a suitable cloth on
the cap of the coolant expansion tank.
Insufficient anti-freeze in the coolant system can cause the engine to break down and cause
serious injuries.
•Please note that the amount of correct coolant additive used must be sufficient for the
lowest ambient temperature that you expect the vehicle to be exposed to.
•Coolant can freeze at extremely cold outside temperatures, causing the vehicle to break
down. Vehicle occupants with inadequate winter clothing could then freeze to death as the
heating will also no longer function.
WARNING
Never mix genuine coolant additives with other coolants that have not been approved by
Volkswagen. Mixing other coolants could cause serious damage to the engine and cooling
system.
•If the liquid in the coolant expansion tank is brown instead of purple, for example, - G 13 -
has been mixed with another unsuitable engine coolant. The coolant must be changed as
soon as possible if this is the case. Failure to observe this point can result in serious faults
or engine damage.
NOTICE

•Unscrew the cap carefully ⇒.
•Refill only new coolant according to the Volkswagen specification (⇒ Coolant specification) ⇒
.
•The coolant level must be between the marks on the expansion tank ⇒ Fig. 123. Do not fill up
over the top line of the marked area⇒!
•Close the cap tightly.
•If in an emergency you do not have access to the coolant of the required specification
(⇒ Coolant specification), do not use any other coolant additive. Instead, initially refill with
distilled water⇒ only. Then add the correct proportion of coolant additive as soon as
possible ⇒ Coolant specification.
Vehicle battery
 Introduction
This chapter contains information on the followingsubjects:
⇒ Warning lamp
⇒ Checking the electrolyte level of the vehicle battery
⇒ Charging, replacing, disconnecting and connecting the vehicle battery
The vehicle battery is a component of the electrical system in the vehicle.
Never carry out any work on the electrical system if you are not familiar with the necessary
procedures and the general safety requirements and only unsuitable tools are available ⇒. The
work should be carried out by a qualified workshop if you are uncertain. Volkswagen recommends
using a Volkswagen dealership for this purpose. Serious injuries can be caused if work is carried
out incorrectly.
Location of the vehicle battery
The vehicle battery is located in the engine compartment.
Hot steam or engine coolant can cause serious burns.
•Never open the bonnet if you can see or hear steam or engine coolant coming out of the
engine compartment. Always wait until no escaping steam or coolant can be seen or
heard.
•Always allow the engine to cool down completely before carefully opening the bonnet. Hot
components can burn the skin.
•Before opening the bonnet once it has cooled down:
- Apply the handbrake fully and move the selector lever to position N or move the
manual gear lever to the neutral position.
- Remove the vehicle key from the ignition lock.
- Always keep children away from the engine compartment and never leave the
vehicle unattended.
•The engine cooling system is under pressure when the engine is hot. Never open the cap
of the coolant expansion tank when the engine is hot. Coolant may spray out and cause
serious burns and injuries.
- Turn the cap slowly and very carefully anticlockwise while exerting some downward
pressure on the cap.
- Always protect the face, hands and arms from hot coolant or steam with a large,
thick cloth.
•When refilling, do not spill any service fluids on engine components or on the exhaust
system. The spilt service fluids can start a fire. In certain circumstances, the ethylene
glycol in the engine can catch fire.
WARNING
•Refill only with distilled water. All other types of water can cause corrosion in the engine
due to the chemical components contained therein. This can also lead to engine failure. If
any other type of water is refilled, the fluid in the engine cooling system should be
completely replaced immediately by a qualified workshop.
•Do not fill coolant above the top of the marked area ⇒ Fig. 123. Otherwise the excess
coolant will be pressed out of the cooling system when the engine is hot and could cause
damage.
•If a large amount of coolant has been lost, do not refill the coolant until the engine has
cooled completely. Heavy coolant loss is an indication of leaks in the engine cooling
system. The engine cooling system should be checked by a qualified workshop as soon as
possible. Failure to do so can result in engine damage.
•When refilling operating fluids, please ensure that the correct container is filled. The use of
incorrect operating fluids could result in serious malfunctions and engine damage!
NOTICE