2021 VOLKSWAGEN UP! cooling

Keep the air intake slots in front of the windscreen free of snow, ice and leaves to ensure
heating and cooling is not impaired, and to prevent the windows from misting over.
Controls
Fig. 112 In the centre console: rotary controls for the heating and fresh air system
Fig. 113 In the centre console: air conditioning controls
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Button,
control
Additional information. Heating and fresh air system
⇒ Fig. 112 and air conditioning system ⇒ Fig. 113.
Temperature ①.
Turn the regulator to set the temperature as required.
 ...
Blowers ②.Setting 0: blower and system switched off, setting 4: highest blower setting.
Air distribution ③.Turn the control to direct the airflow exactly as required.
④Air conditioning system: slider for the air recirculation mode ⇒ Air
recirculation mode.
Heating and fresh air system: defrost function. Air distribution to the
windscreen and the side windows around the exterior mirrors.
Air conditioning system: defrost function. Air distribution to the windscreen
and the side windows around the exterior mirrors. press the button,
increase the blower level and switch the air recirculation mode ⇒ Air
recirculation mode off, in order to remove condensation from the windscreen
as quickly as possible.
Air distribution to the upper body via the air vents in the dash panel.
Air distribution to the footwell.
Heating and fresh air system, air conditioning system: air distribution to the
windscreen and in the footwell.
Air conditioning system: Press the button to switch the cooling system on or
off.
Rear window heating
The button for the rear window heating is located in the centre console. The rear window
heating only functions when the engine is running and will switch off automatically after
approximately 10 minutes.
Stale air can quickly cause tiredness and lack of concentration in the driver, which in turn can
cause collisions, accidents and serious injuries.
•Never switch off the blowers or switch on the air recirculation mode for an extended period
as this prevents fresh air from entering the vehicle interior.
WARNING

General information on the heating and fresh air system
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The required interior temperature cannot be lower than the outside temperature as the heating and
fresh air system cannot cool or dehumidify the air.
Settings for optimal road visibility
•Set blower ⇒ Fig. 112② to level 1 or 2.
•Open and position all vents on the dash panel ⇒ Vents.
•Turn the air distribution controller ⇒ Fig. 112③ to the defrost position.
Information on the air conditioning system
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The cooling system for the vehicle interior only works when the engine is running and the blower is
switched on.
The air conditioning system operates most effectively with the windows and the electric panorama
sliding and tilting glass roof closed. However, if the vehicle has heated up after standing in the sun
for some time, the air inside can be cooled more quickly by opening the windows and the electric
panorama sliding and tilting glass roof for a short time.
Settings for optimal road visibility
Switching the cooling system on not only reduces the temperature of the vehicle interior, but also
the humidity. This improves comfort for the vehicle occupants and prevents the windows from
misting when the outside humidity is high.
•Switch off air recirculation mode ⇒ Air recirculation mode.
•Set the blowers to the required level.
•Open and position all vents on the dash panel ⇒ Vents.
•Turn the air distribution controller to the defrost position.
•Press the button to switch the cooling system on. The indicator lamp in the button
lights up.
The cooling system cannot be switched on
The following criteria may prevent the cooling system from being switched on:
•The engine is not running.
•The blower is switched off.
•The air conditioning system fuse has blown.
•The ambient temperature is lower than approximately +2℃ (+36°F).
•The compressor has been temporarily switched off because the coolant temperature is too high.
•There is a different fault in the vehicle. The air conditioning system should be checked by a
qualified workshop.
Things to note
If the humidity and temperature outside the vehicle are high, condensation can drip off the
evaporator in the cooling system and form a pool underneath the vehicle. This is normal and does
not indicate a leak.
The windscreen may mist up after starting the engine due to residual humidity in the air
conditioning system. Switch the defrost function on in order to clear the windscreen of condensation
or mist as quickly as possible.
Vents
Fig. 114 In the dash panel: vents
First read and observe the introductoryinformation and safety warnings⇒
Introduction

Vents
The vents ⇒ Fig. 114① should be left open to ensure that the vehicle interior is sufficiently heated,
ventilated and cooled.
•Press the vent ① to open it.
•Turn the panels to adjust the direction of the airflow.
•To ensure the best possible airflow to the side windows, open the individual air vent and turn to
the defrost position in which the air vent engages.
•To close the vents, push the panels backs.
Additional vents can be found in the middle of the instrument panel ⇒ Fig. 114②, in the footwells
and in the rear area of the vehicle interior.
Air recirculation mode
First read and observe the introductoryinformation and safety warnings⇒
Introduction
General notes
The air recirculation mode prevents outside air from entering the vehicle.
If the outside temperature is very high, the manual air recirculation mode should be activated for a
short time in order to cool the vehicle interior more quickly.
•If the air distribution control is set to , switch off the air recirculation mode ⇒.
Switching the air recirculation mode on and off
Switching on: push the slider ⇒ Fig. 113④ all the way to the right.
Switching off: push the slider ⇒ Fig. 113④ all the way to the left.
At the filling station
Filling the tank
 Introduction
This chapter contains information on the followingsubjects:
⇒ Indicator lamps and fuel gauge
⇒ Filling the tank with petrol
⇒ Filling the tank with natural gas
⇒ Capacities
⇒ Checks when filling the tank
The fuel cap is located at the rear right-hand side of the vehicle.
Additional information and warnings:
•Exterior views ⇒ Exterior views
•Fuel ⇒ Fuel
Do not place any food, medicine or any other heat-sensitive items in front of the vents. Heat-
sensitive food, medicine and other items could be either damaged or rendered useless.
NOTICE
Stale air can quickly cause tiredness and lack of concentration in the driver, which in turn can
cause collisions, accidents and serious injuries.
•Never use the air recirculation mode for an extended period as no fresh air will enter the
vehicle interior.
•If the cooling system is switched off, the windows can mist up very quickly in air
recirculation mode and reduce visibility considerably.
•Always switch off the air recirculation mode when it is not required.
WARNING
Do not smoke if the air recirculation mode has been selected. The smoke drawn into the
cooling system can leave a residue on the evaporator and the dust and pollen filter, producing
a permanent unpleasant odour.
NOTICE

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

Unintentional vehicle movements during service work can cause serious injury.
•Never work underneath a vehicle if it is not secured against rolling away. If you are
working underneath the vehicle while the wheels are on the ground, the vehicle must be
on a level, the wheels must be blocked and the vehicle key must be removed from the
ignition lock.
•If you have to work underneath the vehicle, use suitable stands to provide extra support
for the vehicle. The vehicle jack is not sufficient for this task and can fail, which can lead to
serious injuries.
•The start/stop system must have been deactivated.
WARNING
The engine compartment of any motor vehicle is a dangerous area. Serious injuries can be
sustained here.
•The utmost care and attention must be paid when carrying out any work and you must
follow the general safety rules. Never take any risks.
•Never do any work on the engine or in the engine compartment unless you know exactly
how to carry it out. If you are uncertain of what to do, the work should be carried out by a
qualified workshop. Serious injuries can result from work that has not been carried out
properly.
•Never open the bonnet if you see steam or coolant escaping from the engine
compartment. Hot steam or coolant can cause serious burns. Always wait until you can no
longer see or hear steam or coolant coming from the engine compartment.
•Always allow the engine to cool down before opening the bonnet.
•Hot parts of the engine or exhaust system 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.
- After cooling, turn the cap slowly and very carefully anticlockwise while exerting
some downwards 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.
WARNING
High voltages in the electrical system can cause electric shocks, burns, serious injuries and
death!
•Never short circuit the electric system. The vehicle battery could explode.
•Please note the following guidelines to help reduce the risk of an electric shock and
serious injuries while the engine is running or being started:
- Never touch the electrical wiring of the ignition system.
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