2021 VOLKSWAGEN UP! brake

If, in a potential collision scenario, the city emergency brake function detects that the driver is
applying the brakes with insufficient pressure, the system can increase the brake pressure in order
to reduce speed ahead of the collision. Hence the system can help minimise the consequences of
an accident.
Additional information and warnings:
•Exterior views ⇒ Exterior views
•Lower section of the centre console ⇒ Overview of the centre console
•Instrument cluster ⇒ Instrument cluster
•Accessories, modifications, repairs and renewal of parts ⇒ Accessories, modifications, repairs
and renewal of parts
The brake pedal travel decreases when the city emergency brake function is triggered. This
may make the brake pedal feel stiffer.
Automatic brake intervention by the city emergency brake function can be stopped by using
the clutch, the accelerator or steering intervention.
Unusual noises may be heard if the city emergency brake function is applying an automatic
braking procedure. This is normal and the noises are caused by the braking system.
Warning and indicator lamps
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The city emergency brake function is switched on every time the ignition is switched on. No display
will be shown to alert you of this.
The indicator lamp will be lit up if the city emergency brake function is switched off, is working or if
there is a fault in the system.
Lit upPossible cause ⇒Solution
The city emergency brake function
was switched on using the button
⇒ Fig. 109.
The indicator lamp is switched off
automatically after approximately 5
seconds.
FlashesPossible cause ⇒Solution
Quickly: city emergency brake function
is braking automatically or has braked
automatically.
Indicator lamp will go out automatically.
Slowly: city emergency brake function
currently not available.
While the vehicle is stationary, switch off
the engine and re-start it again. If
necessary, inspect the laser sensor (for
The intelligent technology of the city emergency brake function cannot change the laws of
physics or the system-related vehicle limitations. Never let the extra convenience afforded by
the city emergency brake function tempt you into taking any risks when driving. The driver is
always responsible for braking in time.
•The city emergency brake function cannot prevent accidents and serious injuries by itself.
•The city emergency brake function can carry out unwanted brake interventions in certain
complex situations, e.g. if a vehicle cuts very closely in front of you.
WARNING
Incorporating the city emergency brake function into your own driving style can cause
accidents and serious injuries. The system is not a substitute for the full concentration of the
driver.
•Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road and
traffic conditions.
•The city emergency brake function does not react to persons, animals and vehicles
crossing or approaching in the same lane.
•Brake the vehicle by depressing the brake if the vehicle rolls forwards once the city
emergency brake function has been applied.
WARNING
Switch off the city emergency brake function if you suspect that the laser sensor has been
damaged. This can help to prevent further damage.
•Repairs to the laser sensor require specialist knowledge. Volkswagen recommends using
a Volkswagen dealership for this purpose.
NOTICE

FlashesPossible cause ⇒Solution
soiling, ice, roof load protruding over the
front) ⇒. Proceed to a qualified
workshop immediately and have the
system checked if it is constantly
unavailable.
When travelling between
5 – 30 km/h (3 – 19 mph): the city
emergency brake function was
switched off using the button
⇒ Fig. 109.
Switch on the city emergency brake
function using the button
⇒ Fig. 109.
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.
Laser sensor
Fig. 107 On the windscreen: laser sensor for the city emergency brake function
Fig. 108 Detection range of the laser sensor
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The system monitors the traffic in front of the vehicle using a laser sensor in the windscreen
⇒ Fig. 107.
Vehicles travelling ahead can thus be recognised up to a distance of approximately 10 m.
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

Switching city emergency brake function on and off
Fig. 109 In lower part of centre console: button for the city emergency brake function
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Switching the city emergency brake function on and off
•Press the ⇒ Fig. 109 button in the centre console.
When the city emergency brake function is switched off, the indicator lamp lights up
when the vehicle is travelling at 5 – 30 km/h (3 – 19 mph).
Switch off the city emergency brake function in the following situations
The city emergency brake function should be switched off in the following situations ⇒:
•If the vehicle is being towed.
•If you are driving the vehicle through an automatic car wash.
•If the vehicle is on a rolling road test bed.
•If the laser sensor is faulty.
•If the laser sensor has been hit or moved with force.
•If the vehicle is being driven off-road (e.g. through low-hanging branches).
•If there are protruding objects in the area above the bonnet, e.g. a load on the roof that sticks
out at the front.
•If the windscreen is damaged in the area around the laser sensor.
•Driving with tailgate open.
•In the event of multiple unwanted interventions.
The beam from the laser sensor could cause severe damage to the eyes.
•Never use optical devices, such as a rangefinder camera, microscope or magnifying glass,
to look into the laser sensor from a distance of less than 100 mm.
•Please be aware that the laser beam may still be active even if the city emergency brake
function is switched off or unavailable. The laser beam is not visible to the human eye!
WARNING
The city emergency brake function may not work if the area on the windscreen around the
laser sensor is iced over, dirty or covered, for example from rain, spray or snow or by roof
loads protruding over the front of the vehicle.
•Always keep the area around the laser sensor free from dirt and ice and do not cover it.
•Remove snow with a brush, and remove ice preferably with a solvent-free de-icer spray.
NOTICE
The city emergency brake function may fail to work if the windscreen is damaged in the area
around the laser sensor.
•Have the windscreen replaced if it is scratched, cracked or chipped in the area around the
laser sensor. Only use windscreens that have been approved by Volkswagen. Do not
simply have the windscreen repaired (for example, if it has been damaged by stone
chipping).
•When changing the windscreen wiper blades only use wiper blades that are the same
production quality as the factory-fitted wiper blades.
•Do not paint the windscreen in the area around the laser sensor or cover the area with
stickers, deposits or similar.
NOTICE

Special driving situations
Fig. 110 A: vehicle in a bend B: motorbike in front is outside the range of the laser sensor
Fig. 111 Vehicles changing lanes
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The city emergency brake function has physical and system-specific limits. In certain situations, the
driver may therefore feel that the city emergency brake function reacts too late or unexpectedly.
You should therefore always be prepared to take full control of the vehicle if necessary.
The following driving situations demand particular vigilance:
When driving through bends
When driving into or out of a long bend, the laser sensor may react to a vehicle in the adjacent lane
⇒ Fig. 110A and thus brake the vehicle. The braking effect can be stopped by pressing the
accelerator or clutch pedal or by steering the vehicle.
Narrow vehicles and a zig-zag traffic situation
Narrow vehicles and vehicles travelling slightly to the left or right of your vehicle will only be
recognised by the laser sensor once they have entered the range of the sensor ⇒ Fig. 110B. This
particularly applies to narrow vehicles such as motorcycles.
When other vehicles change lanes
Vehicles that are very close to you when they move into your lane could cause the city emergency
brake function to be applied unexpectedly ⇒ Fig. 111. The braking effect can be stopped by
pressing the accelerator or clutch pedal or by steering the vehicle.
Possible laser sensor function impairments
The city emergency brake function will switch off temporarily if the function of the laser sensor is
impaired due to heavy rain, spray, snow or mud, for example. The indicator lamp will flash in
the instrument cluster display.
The city emergency brake function is ready to work again as soon as the laser sensor returns to
normal function. The indicator lamp goes out.
The following conditions could prevent the city emergency brake function
from reacting:
•If ESC is active.
•In tight bends.
•If the vehicle is reversing.
•When you drive faster than 30 km/h for a few seconds.
•If the accelerator is fully depressed.
•If the city emergency brake function is switched off or if there is a fault in the system ⇒ Warning
and indicator lamps.
•If the laser sensor is dirty, covered or overheated ⇒ Laser sensor.
•In snow, heavy rain or thick fog.
•If vehicles are travelling slightly to the left or right of your vehicle.
•If vehicles are crossing in front of your vehicle.
Accidents and serious injuries could occur if you do not switch off the city emergency brake
function during any of the situations named above.
•Switch off the city emergency brake function during critical driving situations.
WARNING

Fig. 115 In the instrument cluster: variant A: fuel gauge for petrol, variant B: fuel gauge for petrol
Fig. 116 In the instrument cluster display: fuel gauge for petrol
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The fuel gauge can vary according to the vehicle equipment level ⇒ Fig. 115 or ⇒ Fig. 116.
Lit upNeedle position
⇒ Fig. 115
Possible cause ⇒Solution
Red marking ①
Fuel tank nearly empty.
Reserve quantity is being used
⇒ Capacities.
Fill the tank with petrol
as soon as possible ⇒
.
Blue marking ②
Natural gas fuel tank nearly
empty.
Reserve quantity is being used.
Refuel with natural gas
as soon as possible ⇒
.
Flashes for
approximately
10 seconds
Position of the
bar ⇒ Fig. 116
Possible cause ⇒Solution
Reserve fuel
marking flashes for
approximately 10
seconds (four small
segments)
Fuel tank nearly empty.
Reserve quantity is being used
⇒ Capacities.
Fill the tank as soon as
possible ⇒.
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.
Natural gas engines
Things to note: if the vehicle is parked for an extended period directly after refuelling, it may well
occur that the pointer for the natural gas engine does not indicate the fuel level shown directly after
refuelling. This does not mean that there is a leak in the system but but rather that, for technical
reasons the pressure has been decreased in the natural gas tank.
The small arrow next to the petrol pump symbol ⇒ Fig. 115 in the display instrument shows
you the side of the vehicle on which the tank flap is located.
Only applies for vehicles with a fuel gauge in the instrument cluster ⇒ Fig. 115.
Only applies for vehicles with a fuel gauge in the instrument cluster display ⇒ Fig. 116.
Filling the tank with petrol
a)
b)
Driving the vehicle when the fuel level is too low could lead to your vehicle breaking down in
traffic, accidents and serious injuries.
•When the fuel level is too low, the fuel supply to the engine could be irregular, especially
when driving up or down hills and inclines.
•The steering, all driver assist systems and brake assist systems will not function if the
engine sputters or stops completely due to a lack of fuel or irregular fuel supply.
•Always fill the tank when it is still 1/4 full. This reduces the risk of running out of fuel and
breaking down.
WARNING
•To avoid damage to your vehicle, always observe the indicator lamps and associated
warning texts.
•Do not run the tank empty. Irregular filling periods can cause backfiring and allow unburnt
fuel to enter the exhaust system. This could cause damage to the catalytic converter!
NOTICE
a)
b)

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

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

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