2021 VOLKSWAGEN UP! wheel

If the front brake pads are tested, the rear brake pads should be tested at the same time.
Regularly check the thickness of the brake pads through the openings in the rims or from the
underside of the vehicle. If necessary, remove the wheels to carry out a comprehensive check.
Volkswagen recommends using a Volkswagen dealership for this purpose.
Brake assist systems
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The brake assist systems ESC, ABS, EBV, BAS, TCS, TC and EDL will only function when the
engine is running. They make a considerable contribution to active driving safety.
Electronic stability control (ESC)
The ESC helps to reduce the risk of skidding and to improve driving stability by braking individual
wheels in certain driving situations. The ESC detects critical driving situations such as oversteer,
understeer and wheelspin. The system supports the stabilisation process for the vehicle by targeted
braking or by reducing engine torque.
ESC has its limitations. It is important to realise that ESC cannot overcome the laws of physics.
ESC will not be able to assist in every situation faced by a driver. For example, ESC will not be able
New brake pads will not have the optimal braking effect when first fitted.
•New brake pads cannot generate the full braking effect during the first 320 km and must
first be run in. A reduced braking effect can be increased by applying more pressure to the
brake pedal.
•You must drive particularly carefully when driving with new brake pads in order to reduce
the risk of accidents, serious injuries and loss of control of the vehicle.
•Never drive too close to other vehicles when running in new brake pads, and never create
a driving situation that will place a heavy load on the brakes.
WARNING
Overheated brakes reduce the braking effect and considerably increase the braking distance.
•When driving downhill the brakes are placed under particular strain and become hot very
quickly.
•Before driving down a long, steep gradient, reduce speed and change to a lower gear or
move the selector lever to a lower position. This will make use of the engine braking effect
and relieve the load on the brakes.
•Non-standard or damaged front spoilers could restrict the airflow to the brakes and cause
them to overheat.
WARNING
Wet brakes or brakes coated with ice or road salt react more slowly and require longer
braking distances.
•Carefully apply the brakes to test them.
•Always dry brakes and clean off any coating of ice and salt with a few cautious
applications of the brake when visibility, weather, road and traffic conditions permit.
WARNING
Driving without the brake servo can considerably increase the braking distance and thus
cause accidents and serious injuries.
•Never allow the vehicle to roll if the engine is switched off.
•If the brake servo does not function or the vehicle is being towed, the brake pedal will have
to be depressed more forcefully as the braking distance will be increased due to the lack
of assistance for the brake system.
WARNING
•Never let the brakes rub by applying light pressure to the brake when it is not necessary to
brake. Continual pressure on the brake pedal will overheat the brakes. This can
considerably reduce the brake effect, increase the braking distance and, in certain
circumstances, cause the brake system to fail completely.
•Before driving down a long, steep gradient, reduce speed and change to a lower gear or
move the selector lever to a lower position. This will make use of the engine braking effect
and relieve the load on the brakes. The brakes could otherwise overheat and possibly fail.
The brakes should only be used to slow or stop the vehicle.
NOTICE

to assist every time that there is a sudden change in the road surface quality. If a section of dry
road is suddenly covered with water, mud or snow, ESC will not be able to assist in the same
manner as on a dry road. If the vehicle aquaplanes (drives on a layer of water rather than on the
road surface), ESC will not be able to assist in steering the vehicle as the contact to the road
surface has been interrupted and it is therefore no longer possible to steer or brake the vehicle.
Always adapt your speed and driving style to suit visibility, weather, road and traffic conditions. ESC
cannot defy the laws of motion, improve the available power output, or keep the vehicle on the road
if insufficient care and attention on the part of the driver causes the vehicle to leave the road.
Instead, ESC increases the possibility of keeping the vehicle under control and, in extreme on-road
driving situations, it assesses the driver’s steering input and helps the vehicle to continue in the
required direction. If the vehicle is driving at a speed that leads it to leave the road before the ESC
can provide any kind of support, the ESC will be unable to provide any assistance.
The ABS, BAS, TCS and EDL systems are integrated into the ESC. The ESC is always on.
Anti-lock brake system (ABS)
The ABS prevents the wheels from locking when the brakes are applied up until the point where the
vehicle is nearly stationary and assists the driver in steering the vehicle and keeping it under
control. This means that the vehicle is less likely to spin, even when the brakes are depressed fully:
•Depress and hold the brake pedal with force. Do not take your foot off the brake pedal or
reduce the force on the brake pedal!
•Do not pump the brake pedal or reduce the pressure on the brake pedal!
•Steer the vehicle while the brake pedal is fully depressed.
•The ABS will switch off when the brake pedal is released or if the pressure on the brake pedal is
reduced.
If the ABS is taking corrective action, there is a pulsing movement in the brake pedal and some
noise. However, ABS will not necessarily guarantee shorter braking distances in all conditions. The
braking distance could even be longer when braking on gravel or on fresh snow covering an icy or
slippery surface.
Electronic brake pressure distribution system (EBD)
Every vehicle's centre of gravity moves forwards whenever the brake is operated. This means that
the rear wheels are in danger of locking due to the lower traction. The electronic brake pressure
distribution system controls the brake pressure for the rear wheels and thereby ensures the
optimum distribution of brake pressure between the front and rear axles. Under normal conditions,
the system will prevent the rear from breaking away if too much brake pressure if applied to the rear
wheels. The electronic brake pressure distribution system is included in the ABS' scope of
functions.
Brake Assist system (BAS)
The brake assist system can help to reduce the braking distance. The brake assist system
reinforces brake pressure hydraulically when the driver depresses the brake pedal quickly in an
emergency situation. As a result, full braking power is made accessible very quickly, brake pressure
is increased and the braking distance reduced. In this way, the ABS is activated more quickly and
more effectively.
Do not reduce the pressure on the brake pedal. The brake assist system will switch off the
hydraulic brake servo automatically when the brake pedal is released or if the pressure on the
brake pedal is reduced.
Traction Control System (TCS) or Traction Control (TC)
The TCS or TC reduces the engine output if wheelspin occurs and adapts the output to suit road
surface conditions. TCS or TC helps the car to start moving, accelerate and climb gradients in
unfavourable road conditions.
Electronic differential lock (EDL)
The EDL is available for normal driving on straight roads. EDL brakes the wheel that has lost
traction and distributes the driving force to the other drive wheel. To prevent the disc brake of the
braked wheel from overheating, the EDL cuts out automatically if subjected to excessive loads. The
EDL will switch on again automatically when the brake has cooled down.

The ESC or the TCS/TC can only function properly if all four wheels have the same tyres.
Any differences in the rolling radius of the tyres can cause the system to reduce engine power
unexpectedly.
If the ABS fails, the ESC, TCS, TC and EDL will also cease to function.
Control processes running in the systems described may cause operating noises.
Brake fluid
Fig. 101 In the engine compartment: cap on the brake fluid container
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Brake fluid will gradually absorb water from the surrounding air. The brake system will be damaged
if there is too much water in the brake fluid. The boiling point of the brake fluid is also considerably
reduced by the water content. Heavy use of the brakes may cause a vapour lock in the brake
system if the water content is too high. Vapour locks reduce levels of braking power, considerably
increase braking distance and can even cause the brake system to fail completely. Your own safety
and that of other road users depends on having a brake system that functions properly at all times
⇒.
Brake fluid specification
Volkswagen has developed a brake fluid that has been optimised for the brake system in the
vehicle. To ensure optimal operation of the brake system, Volkswagen recommends the use of
brake fluid compliant with VW standard 501 14.
Driving fast on icy, slippery or wet roads can lead to a loss of control of the vehicle and could
cause serious injury to the driver and passengers.
•Adapt your speed and driving style to suit visibility, weather, road and traffic conditions. Do
not let the extra safety afforded by the brake assist systems ABS, BAS, EDL, TCS, TC and
ESC tempt you into taking any risks when driving.
•The brake assist systems cannot defy the laws of motion. Slippery and wet roads will
remain dangerous, even when the ESC and other systems are active.
•Driving too fast on wet roads can cause the wheels to lose contact with the road surface
and aquaplane. A vehicle cannot be braked, steered or controlled once it has lost contact
with the road surface.
•Brake assist systems cannot prevent an accident if, for example, you are driving too close
to the vehicle in front or are driving too fast for the individual situation.
•Although the brake assist systems are very effective and can help to control the vehicle in
difficult driving situations, please always remember that the driving stability of the vehicle
depends on the tyre grip.
•When accelerating on a slippery surface, for example on ice and snow, press the
accelerator carefully. The wheels can spin even with active brake assist systems and this
can lead to a loss of control of the vehicle.
WARNING
ESC will be considerably less effective if other components and systems that affect driving
dynamics are not serviced correctly or are not functioning properly. This also applies, but not
exclusively, to the brakes, tyres and other systems that have already been named.
•Please always note that modifications and changes to the vehicle can affect the function of
the ABS, BAS, TCS, TC, EDL and ESC.
•Alterations to the suspension system or the use of non-approved wheel and tyre
combinations can affect the function of ABS, BAS, TCS, TC, EDL and ESC and reduce
their effectiveness.
•Suitable tyres are also crucial if ESC is to function optimally ⇒ Wheels and tyres.
WARNING

Avoid unnecessary loads
The lighter the vehicle, the more economical and environmentally-friendly it is. An extra weight of
100 kg can increase fuel consumption by up to 0.3 l/100 km.
Remove all unnecessary objects and loads from the vehicle.
Remove any unnecessary special equipment and accessories
The more aerodynamic a vehicle, the lower its fuel consumption. Special equipment and
accessories, such as roof carriers or bicycle carriers, make the vehicle less aerodynamic.
You should therefore remove any special equipment and luggage carriers that are not in use,
especially if you are going to be driving at high speeds.
Steering
 Introduction
This chapter contains information on the followingsubjects:
⇒ Warning and indicator lamps
⇒ Information on steering
Depending on its equipment level the vehicle may have power steering.
The power steering is not hydraulic. It is an electromechanical system. The advantage of this
steering system is that no hydraulic hoses, hydraulic oil, pumps, filter or other parts are required.
The electromechanical system reduces fuel consumption. A hydraulic system requires constant oil
pressure in the system, whereas an electromechanical steering system only needs an energy
supply while steering.
The power steering provided by the electromechanical steering system automatically adjusts to the
vehicle speed, steering wheel torque and steering wheel angle. The electromechanical steering
only functions when the engine is running.
Additional information and warnings:
•Starting and stopping the engine ⇒ Starting and stopping the engine
•Battery ⇒ Vehicle battery
•Tow-starting and towing ⇒ Tow-starting and towing
Warning and indicator lamps
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Lit upPossible causeSolution
The electromechanical steering is faulty
or not working.
The steering should be checked by a
qualified workshop as soon as possible.
Electromechanical steering function
reduced.
The steering should be checked by a
qualified workshop as soon as possible.
If the yellow warning lamp remains off after
the ignition has been restarted and you have
driven a short distance, you do not need to
consult a qualified workshop.
The vehicle battery has been
disconnected and reconnected.
Drive a short distance at a speed of
15 – 20 km/h (9 – 12 mph).
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 power steering is not working, the steering wheel is difficult to turn, which makes it
difficult to steer the vehicle.
•The power steering only functions when the engine is running.
•Never allow the vehicle to roll if the engine is switched off.
•Never remove the vehicle key from the ignition lock when the vehicle is in motion. The
steering lock may be activated and you will no longer be able to steer the vehicle.
WARNING

Information on steering
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The steering should be locked every time you leave the vehicle to make it more difficult for the
vehicle to be stolen.
Mechanical steering column lock
The steering column is locked if the vehicle key is removed from the ignition lock when the vehicle
is stationary.
Activating the steering lockDeactivating the steering lock
Park the vehicle ⇒ Braking, stopping and
parking.Insert the vehicle key into the ignition lock.
Remove the vehicle key.Turn the steering wheel slightly to take the load
off the steering lock mechanism.
Turn the steering wheel slightly until the
steering lock clicks into place.
Hold the steering wheel in this position and turn
the ignition on.
Electromechanical steering
The power steering provided by the electromechanical steering system automatically adjusts to the
vehicle speed, steering wheel torque and steering wheel angle. The electromechanical steering
only functions when the engine is running.
You will need considerably more strength than normal to steer the vehicle if the power steering is
reduced or has failed completely.
Driver assist systems
Pull-away assist systems
 Introduction
This chapter contains information on the followingsubjects:
⇒ Indicator lamps
⇒ Start/stop system
⇒ Hill Hold Assist
Additional information and warnings:
•Volkswagen information system ⇒ Volkswagen information system
•Braking, stopping and parking ⇒ Braking, stopping and parking
•Battery ⇒ Vehicle battery
•Wheels and tyres ⇒ Wheels and tyres
•Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs
and renewal of parts
•Starting the engine with jump leads ⇒ Starting the engine with jump leads
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

•Preparation for working in the engine compartment ⇒ Preparation for working in the engine
compartment
Fuels can pollute the environment. Any spilt service fluids must be cleaned up and disposed
of properly.
Indicator lamps and fuel gauge
Filling the tank incorrectly and incorrect handling of fuel can cause explosions, fire and
serious burns and injuries.
•Always ensure that the tank cap is properly closed, to prevent the evaporation and spillage
of fuel.
•Fuel is highly explosive and inflammable and can cause serious burns and other injuries.
•Fuel can spill out if the engine is not switched off or the filler nozzle is not fully inserted
into the fuel filler neck when filling the tank. This can cause fires, explosions and serious
burns and injuries.
•When filling the tank with fuel, the engine and the ignition must be switched off for safety
reasons.
•When filling the tank, always switch off your mobile telephone and two-way radio or any
other radio equipment. Electromagnetic radiation can generate sparks which can in turn
start a fire.
•Never get back into the vehicle while filling the tank. If in exceptional cases you have to
enter the vehicle, close the door and touch a metal object before touching the filler nozzle
again. This will remove any electrostatic charge from you. Failure to do so could generate
a spark. Sparks can cause a fire when filling the tank.
•Never fill the tank or fill up a spare canister near open flames, sparks or glowing matter
(e.g. cigarettes).
•Electrostatic discharge and electromagnetic radiation must be avoided when filling the
tank.
•Follow all applicable safety information provided by the filling station when filling the tank.
•Never spill fuel in the vehicle or in the luggage compartment.
WARNING
For safety reasons, Volkswagen does not recommend carrying a spare fuel canister in the
vehicle. Fuel can spill out of the full or empty canister and catch fire, especially in the event of
an accident. This could cause explosions, fire and injuries.
•If, in exceptional circumstances, you have to transport a spare fuel canister, please note
the following:
- When refilling never place the canister in or on top of the vehicle, for example in the
luggage compartment. There may be an electrostatic charge during refilling causing
the fuel fumes to ignite.
- Always place the spare fuel canister on the ground.
- When filling a spare fuel canister, place the filler nozzle as far as possible into the
filler opening.
- If the spare fuel canister is made of metal, the filler nozzle must have constant
contact with the canister in order to avoid static charging.
- Please follow all legislation concerning the use, stowage and transport of a spare
fuel canister.
- Ensure that the spare fuel canister is accordance with the industry standard, such
as ANSI or ASTM F852-86.
WARNING
•Remove spilt fuel from all vehicle components as quickly as possible in order to avoid
damage to the wheel housing, tyres and vehicle paint.
•Filling the tank with diesel in a vehicle with a petrol engine can cause serious and
expensive engine damage and cause damage to the fuel system that is not covered by any
Volkswagen guarantee. Do not start the engine under any circumstances if you have
refilled using the incorrect fuel. Seek expert assistance. The substances in these fuels can
cause serious damage to the fuel system and to the engine itself if it is switched on.
NOTICE

Fig. 117 Open tank flap with tank cap attached to the holder
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Switch off the engine, ignition and the mobile telephone before filling the tank and leave them
switched off during the process.
Opening the tank cap
•The tank flap is at the rear of the vehicle on the right.
•Open the tank cap by the moulding to the rear.
•If necessary, fold the key bit out of the vehicle key ⇒ Vehicle key set.
•Insert the vehicle key in the tank flap lock and turn anticlockwise.
•Turn the tank cap anticlockwise and hook it on top of the tank flap ⇒ Fig. 117.
Filling the tank
The correct fuel grade for your vehicle is shown on a sticker on the inside of the tank flap ⇒ Fuel.
•The fuel tank is full when the (properly operated) automatic filler nozzle clicks off for the first
time ⇒.
•Do not continue filling the tank after it switches off. The expansion space in the fuel tank will
otherwise fill up and the fuel could spill out. This could also happen when the fuel warms up and
expands.
Closing the tank cap
•Turn the tank cap clockwise into the fuel filler neck until it perceptibly engages.
•Turn the vehicle key in the lock cylinder of the tank flap clockwise and pull it out.
•Close the tank flap. The tank flap must be flush with the vehicle bodywork.
Natural gas engines
Run the petrol tank empty every 6 months until the indicator lamp  lights up. This is necessary to
maintain necessary system function for petrol mode and fuel quality.
Fuels can pollute the environment. Any spilt service fluids must be cleaned up and disposed
of properly.
Filling the tank with natural gas
Fig. 118 With the tank flap open: tank cap ①, gas filler neck ②, gas filler neck seal ③
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Do not continue filling the tank once the filler nozzle stops automatically. The fuel tank could
be overfilled. This can cause fuel to splash out and overflow. This can cause fires, explosions
and serious injuries.
WARNING
Remove spilt fuel from all vehicle components as quickly as possible in order to avoid damage
to the wheel housing, tyres and vehicle paint.
NOTICE

Windscreen washer fluid level Windscreen wiper and washer
Engine oil level Engine oil
Engine coolant level Coolant
Brake fluid level Braking, stopping and parking
Tyre pressure Wheels and tyres
equipment, service fluids and unsuitable tools are not available ⇒ Preparation for working in the
engine compartment! The work should be carried out by a qualified workshop if you are
uncertain. Please ensure that the following are checked regularly, preferably every time you fill
the tank:
Vehicle lighting necessary for traffic safety:
- Turn signals
- Side lights, dipped beam headlights and main beam headlights
- Tail light cluster
- Brake lights
- Rear fog light ⇒ Lights
Information on changing bulbs ⇒ Changing bulbs.
Fuel
 Introduction
This chapter contains information on the followingsubjects:
⇒ Petrol
⇒ Natural gas
Different engines require different fuels. The factory-fitted sticker on the inside of the tank flap
indicates the fuel type that is required for your particular vehicle.
Volkswagen recommends using low-sulphur or sulphur-free fuels, to help reduce fuel consumption
and prevent damage to the engine.
If the engine is not running smoothly or begins to judder, this can indicate poor or inadequate fuel
quality, e.g. water in the fuel. If these symptoms appear, reduce the vehicle speed immediately and
drive to the nearest qualified workshop at medium engine speeds, avoiding high engine loading. If
these symptoms occur immediately after the vehicle has been refuelled, switch the engine off as
soon as it is safe to do so and seek expert assistance. This can help to prevent further damage.
Additional information and warnings:
•⇒BookletService schedule,
•Filling the tank ⇒ Filling the tank
•Engine management and exhaust system ⇒ Engine management system and exhaust
purification system
Petrol
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Petrol types
Vehicles with a petrol engine must be run on unleaded petrol in compliance with the European
standard EN 228 or DIN 51626-1 ⇒. Fuels with a maximum ethanol content of 10% (E10) can
be used for refuelling.
Petrol types are categorised according to their octane number, e.g. 91, 95, 98 or 99 RON (RON =
Research Octane Number). The vehicle may be filled with petrol that has a higher octane number
Incorrect handling of fuel can cause explosions, fire and serious burns and injuries.
•Fuel is highly explosive and inflammable.
•Never handle fuel near open flames, sparks or glowing matter (e.g. cigarettes).
•Keep naked flames, hot parts and sparks at a safe distance.
•Switch off your mobile telephone or two-way radio when dealing with fuel. Electromagnetic
radiation can generate sparks which can in turn start a fire.
•Avoid electrostatic discharge and electromagnetic radiation in the direct vicinity of fuels.
•Never spill fuel in the vehicle or in the luggage compartment.
•Comply with any relevant safety information and legislation concerning the handling of
fuels.
WARNING