2021 VOLKSWAGEN UP! check engine

Charging, replacing, disconnecting and connecting the vehicle battery
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Charging the battery
The vehicle battery should be charged by a qualified workshop, as the technology used in factory-
fitted batteries requires voltage-limited charging ⇒. Volkswagen recommends using a
Volkswagen dealership for this purpose.
Replacing a vehicle battery
The battery has been developed to suit the conditions of its location and has special safety
features. If a vehicle battery has to be replaced, discuss the electromagnetic compatibility, size and
necessary servicing, output and safety requirements for the new vehicle battery with a Volkswagen
dealership before purchase. Volkswagen recommends that the vehicle battery is changed by a
Volkswagen dealership.
Only maintenance-free vehicle batteries compliant with the standards TL 825 06 and VW 7 50 73
should be used. These standards must be dated April 2008 or later.
Vehicles with start/stop system ⇒ Pull-away assist systems are equipped with a special vehicle
battery. These vehicle batteries may only be replaced by a vehicle battery with the same
specifications.
Disconnecting the vehicle battery
Please note the following if the vehicle battery has to be disconnected from the electrical system in
the vehicle:
•Switch off all electrical consumers and the ignition.
•Unlock the vehicle before disconnecting the battery in order to avoid triggering the alarm.
•First disconnect the negative cable and then the positive cable ⇒.
Connecting the vehicle battery
•Switch off all electrical consumers and the ignition before reconnecting the vehicle battery.
•First reconnect the positive cable and then the negative cable ⇒.
Various indicator lamps may light up after the vehicle battery has been connected and the ignition is
switched on. They will go out if you drive a short distance at a speed of 15–20 km/h (10–12 mph). If
the indicator lamps remain lit up, the vehicle should be checked by a qualified workshop.
If the vehicle battery was disconnected for long periods, the system may not able to calculate or
correctly display the time when the next service is due ⇒ Instruments. Comply with the maximum
permissible service intervals ⇒BookletService schedule,.
Automatic switch-off for electrical consumers
The intelligent vehicle electrical system automatically implements a range of measures to prevent
the battery from discharging under high loads:
•The idling speed is increased so that the alternator provides more electricity.
•The performance of large electrical consumers may be reduced or they may be switched off
completely.
•The power supply to the 12-volt socket and the cigarette lighter is interrupted temporarily while
the engine is being started.
The vehicle electrical system cannot always prevent the vehicle battery from discharging. For
example when the ignition is switched on for an extended period with the engine off, or when the
side or parking lights are on when the vehicle is parked for an extended period.
Any work on the vehicle battery can cause serious chemical burns, explosions and electric
shocks.
•Always wear eye protection and protective gloves.
•Electrolyte is very aggressive. It can burn the skin and can cause blindness. When
working with the battery, protect your hands, arms and particularly your face from acid
spillages.
•Never tilt the vehicle battery. Electrolyte may spill out of the battery vents and cause
chemical burns.
•Never open a vehicle battery.
•If acid is splashed onto your skin or into your eye, rinse immediately for several minutes
with cold water. Then consult a doctor immediately.
•If acid is swallowed, consult a doctor immediately.
WARNING

recommends that the protective coating on the underside of the vehicle and on the running gear
should be checked regularly and repaired if necessary.
Cleaning the engine compartment
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The engine compartment of any motor vehicle is a hazardous area ⇒ Preparation for working in the
engine compartment.
The engine compartment should be cleaned by a qualified workshop. An incorrect cleaning
procedure could possibly remove corrosion protection and damage electrical components.
Furthermore, water could enter the vehicle interior directly via the plenum chamber ⇒.
If the engine compartment is very dirty, we recommend that you always proceed to a qualified
workshop to have it cleaned by a professional mechanic. Volkswagen recommends using a
Volkswagen dealership for this purpose.
Plenum chamber
The plenum chamber is located in the engine compartment between the windscreen and the engine
and has a perforated cover. Air from outside is drawn in from the plenum chamber and is passed
into the vehicle interior via the heating and air conditioning system.
Leaves and other loose objects must be removed from the cover of the plenum chamber at regular
intervals using a vacuum cleaner or by hand.
In the interests of environmental protection, the engine compartment should be washed only
in specially provided wash bays. This prevents toxic waste water containing oil, grease and fuel
from entering the sewerage system. In some districts, washing the engine compartment anywhere
else may be prohibited.
Cleaning and caring for the interior
 Introduction
This chapter contains information on the followingsubjects:
⇒ Seat covers
⇒ Cleaning cloth seat covers, fabric trim and Alcantara upholstery
⇒ Cleaning and caring for natural leather covers
⇒ Cleaning leatherette upholstery
⇒ Cleaning stowage compartments, drink holders and ash trays
⇒ Cleaning and caring for the dash panel, wooden trims and plastic parts
⇒ Cleaning seat belts
Modern fabrics, such as dark denim, are often not colourfast. Light-coloured upholstery (soft
materials or leather) is particularly sensitive to staining caused by these fabrics, even if you are
careful. This is not caused by a fault in the upholstery, but by the non-colourfast nature of the
garments.
Leaving stains, dirt and other deposits on the surface of vehicle components and cloth seat covers
for a long time can make it difficult to clean and treat them. Stains, dirt and deposits may become
impossible to remove, particularly if left for a long time.
Additional information and warnings:
•Cleaning and caring for the vehicle exterior ⇒ Caring for and cleaning the vehicle exterior
Underseal and anti-corrosion coatings can ignite on the hot exhaust system or on other hot
engine parts.
•Never apply underseal or anti-corrosion coatings to the exhaust pipes, catalytic converter,
heat shields or other vehicle components that become hot.
CAUTION
All work in the engine compartment carries the risk of injury, scalding, accidents and fire.
•Before carrying out any work ensure that you are familiar with the requisite procedures
and general safety regulations ⇒ Preparation for working in the engine compartment.
•Volkswagen recommends having the work carried out by a qualified workshop.
WARNING
Water that has entered the plenum chamber via a manual process (e.g. from a high-pressure
cleaner) can cause considerable damage to the vehicle.
NOTICE

Before getting into the vehicle, close all Velcro fasteners that could touch the cloth seat
covers and fabric trims. Open Velcro fasteners can cause damage to cloth seat covers and
fabric trims.
Avoid the direct contact of sharp-edged items and accessories to the upholstery and fabric
trims in order to prevent damage. Accessories include zips, studs, rhinestones on clothing
or belts.
Dust and grit in upholstery pores, folds and seams should be removed regularly so that no
permanent damage is caused to the surface of the seats by scratching.
Always check whether garments are colourfast to prevent damage to the upholstery. This
is especially important for light-coloured upholstery.
•Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs
and renewal of parts
Suitable care products are available from a Volkswagen dealership.
Seat covers
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Checklist
Please note the following for the cleaning and maintenance of the seat covers ⇒:
Volkswagen recommends that stained upholstery is cleaned by a specialist company.
Cleaning cloth seat covers, fabric trim and Alcantara upholstery
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Car care products can be toxic and hazardous. Unsuitable care products and incorrect
application of care products can cause accidents, serious injuries, burns or poisoning.
•The care product must be kept in its original sealed container.
•Read the manufacturer's instructions.
•Never store car care products in empty food containers, bottles or any other non-original
containers as people finding these containers may not know that they contain care
products.
•Keep children away from care products.
•The products can give off harmful fumes during use. They should therefore only be used
outside or in well-ventilated spaces.
•Never use fuel, turpentine, engine oil, nail varnish remover or other volatile fluids to wash,
clean or care for your vehicle. These substances are toxic and highly inflammable.
WARNING
Incorrect care and cleaning of vehicle parts can impair the safety features of the vehicle and
cause serious injury.
•Vehicle parts must be cleaned according to the manufacturer's instructions.
•Only use approved or recommended cleaning products.
WARNING
•Cleaning products that contain solvents attack the material and may cause irreparable
damage.
•Stains, dirt and other deposits containing aggressive and solvent-based ingredients attack
the material and may cause irreparable damage, even if only left for a short time.
•Stains, dirt and other deposits should be removed as quickly as possible and not allowed
to dry in.
•To avoid damage, stubborn stains should be removed by a specialist cleaning company.
NOTICE
Ignoring any of the items on this important checklist for maintaining the seat covers can lead
to damage or discolouration of the seat covers and fabric trims.
•Follow the instructions on the checklist.
NOTICE
®

You will need an external aerial to use a two-way radio in the vehicle.
Any retrofit installation of electrical or electronic equipment in the vehicle will affect its vehicle type
approval. Under certain circumstances, this can negate the type approval for the vehicle.
Volkswagen has approved the vehicle for use with two-way radios subject to the following
conditions:
•Correct installation of external aerial.
•A maximum transmitting power of 10 watts.
An external aerial is needed to give the equipment its optimal range.
Check first with a qualified workshop if you wish to use a two-way radio with a transmitting power of
over 10 watts. A qualified workshop is familiar with the technical options for retrofitting. Volkswagen
recommends using a Volkswagen dealership for this purpose.
Please observe legislation and the instructions and information given in the operating manuals for
radio equipment.
Information stored in the control units
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Your vehicle is factory fitted with electronic control units which are responsible for engine and
gearbox management. The control units also monitor the function of the exhaust system and the
airbags.
These electronic control units continuously evaluate data relevant to the vehicle while the vehicle is
being driven. Only these data will be stored if there are any faults recorded or any deviations from
the specified values. This is generally displayed by the indicator lamps on the instrument cluster.
Special units are required to read and evaluate data stored in the control units.
These data are stored so that specialist workshops can diagnose and solve problems. The
following data may have been stored:
•Engine and gearbox-relevant data.
•Speed.
•Direction of travel.
•Braking power.
•Seat belt monitor.
The control units never record conversations that take place in the vehicle. It is neither possible nor
permitted to use the stored data to create movement profiles.
When the vehicle is being used, situations may arise in which the stored data (alone or in
conjunction with other information such as accident reports, vehicle damage, witness statements
etc.) can become assignable to a particular person, in which case it may be necessary to consult an
expert and use the expert's information.
In vehicles with an emergency call function via a mobile telephone or other units, the current
location can be transmitted. In the event of an accident in which the control units register that an
airbag has been triggered, the system can automatically send out a signal. This depends on your
service provider. Transmission is possible only in areas with a sufficiently strong mobile telephone
signal.
Additional functions that are contractually agreed with the customer, e.g. vehicle positioning in an
emergency, allow certain vehicle data to be transmitted from the vehicle.
If radio equipment is not secured or not properly secured in the vehicle, it could be flung
though the interior during a sudden driving or braking manoeuvre, or in the event of an
accident. This can cause injuries.
•While the vehicle is in motion, always secure two-way radios properly outside the airbag
deployment zones or stow them away safely.
WARNING
If two-way radios that are not connected to an external aerial are used, electromagnetic
radiation in the vehicle could exceed limit values and thus be a health hazard for drivers and
other vehicle occupants. This also applies to external aerials that have not been correctly
installed.
•Two-way radios should only be used in the vehicle if an external aerial is properly
connected.
CAUTION

⇒ Catalytic converter
Additional information and warnings:
•Changing gear ⇒ Changing gear
•Filling the tank ⇒ Filling the tank
•Fuel ⇒ Fuel
•Engine oil ⇒ Engine oil
•Battery ⇒ Vehicle battery
•Information stored in the control units ⇒ Accessories, modifications, repairs and renewal of parts
•Tow-starting and towing ⇒ Tow-starting and towing
Indicator lamps
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Lit upPossible causeSolution
Engine management system fault
(Electronic Power Control).
The engine should be checked by a qualified
workshop as soon as possible.
Fault in catalytic converter.
Decrease speed. Drive carefully to the next
qualified workshop. The engine should be
checked.
FlashesPossible causeSolution
Misfiring, which damages the catalytic
converter.
Decrease speed. Drive carefully to the next
qualified workshop. The engine should be
checked.
Several warning and indicator lamps will light up briefly as a functional check when the ignition is
switched on. They will go out soon afterwards.
If the indicator lamps  or are lit up, fuel consumption may be higher, and engine
performance reduced.
Catalytic converter
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The catalytic converter is used for exhaust gas post-treatment and helps to reduce exhaust
emissions. To help ensure long-term functionality in the exhaust system and the catalytic converter:
•Use unleaded petrol only.
•Do not allow the fuel tank to run empty.
•Do not overfill engine oil ⇒ Engine oil.
•Do not tow-start the vehicle. Use jump leads ⇒ Starting the engine with jump leads.
If you notice misfiring, uneven running or loss of power when the vehicle is moving, reduce speed
immediately. The vehicle should be inspected at the nearest qualified workshop. If this happens,
unburnt fuel can enter the exhaust system and escape into the atmosphere. The catalytic converter
can also be damaged by overheating.
Even when the exhaust purification system is working perfectly, there may be a smell of
sulphur from the exhaust in some conditions. This depends on the sulphur content of the fuel being
used.
The components of the exhaust system become very hot. This can cause fires.
•Park the vehicle so that no part of the exhaust system can come into contact with any
inflammable material underneath the vehicle, e.g. dry grass.
•Never apply additional underseal or anti-corrosion coatings to the exhaust pipes, catalytic
converters or heat shields.
WARNING
To avoid damage to your vehicle, always observe the indicator lamps and associated warning
texts.
NOTICE
If and when

Practical tips
Frequently asked questions
If you suspect that there is a fault in the vehicle or if your vehicle has been damaged, read and
observe the following information before contacting a Volkswagen dealership or qualified
workshop. You may also find useful information in the index under the headings Things to note or
Checklist.
IrregularitySome possible causesPossible solution
Engine does not start.
Vehicle battery is discharged.
– Jump start the engine ⇒ Starting the
engine with jump leads.
– Recharge the vehicle battery
⇒ Vehicle battery.
An incorrect vehicle key is
being used.
Use a valid vehicle key ⇒ Vehicle key
set.
The fuel level is too low.Fill the tank ⇒ Filling the tank.
Vehicle cannot be locked
or unlocked with the
vehicle key.
– The battery in the vehicle
key is discharged.
– The vehicle key is too far
away from the vehicle.
– Replace battery ⇒ Vehicle key set.
– Move closer to the vehicle.
– Synchronise vehicle key ⇒ Vehicle
key set.
– Unlock or lock vehicle manually
⇒ Manual opening and closing.
Unusual noises.
Cold engine, brake assist
systems, electronic steering
column lock, auxiliary heater,
filling up with natural gas.
Refer to the index under entries for
Noises.
Unusual handling.
Assist systems are active.Refer to the index under entries for
Assist systems.
An incorrect tyre pressure is
being used.
Check tyre pressure ⇒ Wheels and
tyres.
Damage to the tyre or wheel.
Check the rims and tyres regularly for
damage ⇒ Wheels and tyres and
replace as necessary ⇒ Changing a
wheel.
The vehicle has no
vehicle jack, spare wheel
or breakdown set.
Equipment depends on type
of vehicle.
No direct solutions possible as it
depends on the equipment level.
Contact a Volkswagen dealership if
necessary ⇒ Vehicle toolkit.
The road ahead is not lit
up properly.
– Headlight has been masked
for driving on the left or on the
right.
– Headlight not adjusted
correctly.
– Bulbs have failed.
– Dipped beam headlight not
switched on.
– Mask the headlights accordingly for
driving on the left or right ⇒ Lights.
– Adjust headlight range ⇒ Lights.
– Change bulbs ⇒ Changing bulbs.
– Switch dipped headlights on
⇒ Lights.
Electrical consumers not
working.
Low vehicle battery charge.Recharge vehicle battery ⇒ Vehicle
battery.
Low fuel level.Fill the tank ⇒ Filling the tank.
Fuse blown.Check fuse and replace as necessary
⇒ Fuses.
Fuel consumption is
higher than indicated.
– Short distances driven.
– Uneven acceleration.
– Avoid driving short distances.
– Think ahead when driving.
– Accelerate evenly.
An electrical consumer is
switched on.
Switch off all consumers that are not
needed.
Fault in engine management
system.
Have the fault rectified ⇒ Engine
management system and exhaust
purification system.
Tyre pressure too low.Adjust the tyre pressure ⇒ Wheels
and tyres.
Driving in hilly regions.No direct solutions possible.
Driving with a heavy load.No direct solutions possible.
Driving at high engine speed.Select a high gear.
In an emergency
 Introduction
This chapter contains information on the followingsubjects:
⇒ Making you and your vehicle safe
⇒ First aid kit, warning triangle and fire extinguisher
Additional information and warnings:

Stop the vehicle at a safe distance away from moving traffic and on a suitable surface .
Switch on the hazard warning lights using the button .
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 .
Ensure that all occupants exit the vehicle away from moving traffic and proceed to a safe
position, e.g. behind the safety barrier.
Take all vehicle keys with you when you leave the vehicle.
Place the warning triangle in position to draw the attention of other road users to your
vehicle.
Allow the engine to cool down and, if necessary, seek expert assistance.
•Braking, stopping and parking ⇒ Braking, stopping and parking
•Manual opening and closing ⇒ Manual opening and closing
•Vehicle toolkit ⇒ Vehicle toolkit
•Changing a wheel ⇒ Changing a wheel
Making you and your vehicle safe
Fig. 140 In the upper part of the centre console: button for switching the hazard warning lights on
and off
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Observe any legislation concerning the safety of broken-down vehicles. For example, many
countries stipulate that you have to switch on the hazard warning lights and wear a high-visibility
waistcoat ⇒ First aid kit, warning triangle and fire extinguisher.
Checklist
To ensure your own safety and that of your passengers, observe the following actions in the
specified order ⇒:
When the hazard warning lights are switched on, for example if you are being towed, you can still
indicate a change in direction or lane change by operating the turn signal. The warning lights will be
interrupted temporarily.
Switch on the hazard warning lights:
•When traffic ahead suddenly starts moving more slowly or you reach the tail end of a traffic jam,
to will warn vehicles behind you.
•When there is an emergency.
•When the vehicle breaks down.
•When tow-starting or towing.
Always follow local regulations for the use of the hazard warning lights.
If the hazard warning lights are not working, use an alternative method of drawing attention to the
broken-down vehicle. This method must comply with traffic legislation.
Broken-down vehicles increase the risk of accidents in road traffic – both for you and other
road users.
•Stop the vehicle as soon as possible and when safe to do so. Park the vehicle at a safe
distance from moving traffic in order to lock all doors securely in an emergency. Switch on
the hazard warning lights to warn other road users.
•Never leave children or people requiring assistance alone in the vehicle when the doors
are locked. This may mean that they are locked in the vehicle in an emergency. People
locked in the vehicle may be subjected to very high or very low temperatures.
WARNING

Fig. 144 Manually locking the vehicle with the vehicle key
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The front passenger door and the rear doors can be locked manually.
•Open the door.
•If necessary, remove the rubber seal from the end face of the door. The seal is marked with a
lock symbol ⇒ Fig. 143.
•Fold the key bit out of the vehicle key if necessary ⇒ Vehicle key set.
•Insert the key bit into the slit in the opening and turn it clockwise as far as it will go ⇒ Fig. 144.
•If necessary, put the rubber seal back in place and close the door fully.
•Ensure that the door is locked.
•If required, repeat the process for the other doors.
•The vehicle should be checked by a qualified workshop as soon as possible.
The doors can be unlocked and opened from the inside by pulling the door release handle.
You may have to pull the door release lever twice ⇒ Central locking system.
Unlocking the tailgate manually
Fig. 145 Inside the luggage compartment: unlocking the tailgate manually
First read and observe the introductoryinformation and safety warnings⇒
Introduction
•If necessary, fold the backrest of the rear bench seat forwards ⇒ Seat functions.
•Remove items of luggage so that you can reach the tailgate from the inside.
•Fold the key bit out of the vehicle key ⇒ Vehicle key set.
•Insert the key bit into the opening in the tailgate ⇒ Fig. 145 and push the release lever in the
direction of the arrow to unlock the tailgate.
Vehicle toolkit
 Introduction
This chapter contains information on the followingsubjects:
⇒ Stowage
⇒ Contents
Observe any country-specific legislation when securing your vehicle in the event of a breakdown.
Vehicle tools in the vehicle
In vehicles factory-fitted with a spare wheel, emergency spare wheel or winter wheels, additional
vehicle tools may be located in the luggage compartment ⇒ Stowage.
Additional information and warnings:
•Preparation for working in the engine compartment ⇒ Preparation for working in the engine
compartment
•In an emergency ⇒ In an emergency
•Changing a wheel ⇒ Changing a wheel
•Breakdown set ⇒ Breakdown set