air condition AUDI A4 2020 Owners Manual

8W1012721BB
Head-up display

Head-up display
Description
Applies to: vehicles with head-up display



Fig. 19 Instrument panel: knob for the head-up display
The head-up display projects certain warnings or
selected information from the assist systems on
the windshield. The display appears within the
driver's field of vision.
Switching on and off
> To switch the head-up display on, press the 67
knob @.
> To switch the head-up display off, press the S7
knob.
Adjusting the height
The height of the display can be adjusted to the
individual driver.
> Make sure you are seated correctly > page 59.
> Turn the knob S? to the right or Left.
Settings in the Infotainment system
> Applies to: MMI: Select on the home screen:
SETTINGS > Display & brightness > Head-up
display.
Possible settings:
— Picture rotation
— Brightness
— Display contents: you can set which informa-
tion should be displayed. The display of certain
information and some of the red indicator
lights cannot be hidden.
® Note
To reduce the risk of scratches on the glass
covering the head-up display, do not place any
objects in the projection opening.
iG) Tips
— Sunglasses with polarization filters and un-
favorable lighting conditions can impair visi-
bility of the display.
— An optimal display depends on the seat po-
sition and the height adjustment of the
head-up display.
—A special windshield is needed for the head-
up display function.
— For information on cleaning, see > table In-
terior cleaning on page 249.
23

8W1012721BB
Lights and Vision

0 - Deactivates all adjustment functions.
Q/ ®- Selects the left or right exterior mirror.
To adjust the mirror glass in a mirror, press the
knob in the desired direction.
GR - Heats the mirror glass depending on the out-
side temperature.
S) - Folds the exterior mirrors*. To fold the mir-
rors out, turn the knob to one of the other posi-
tions. In the MMI, you can select if the mirrors
fold in automatically when you lock the vehicle
> page 31.
Front passenger's exterior mirror tilt
function*
Requirement: the knob must be in the position
for the front passenger’s exterior mirror.
To help you see the curb when backing into a
parking space, the surface of the mirror will tilt
slightly when reverse gear is selected.
You can adjust the mirror surface by turning the
knob in the desired direction.
The mirror moves from the reversing position
back to the original position:
— When you switch the ignition off
— Once you drive forward at speeds faster than 9
mph (15 km/h)
— When the knob is no longer in the position for
the front passenger exterior mirror

Z\ WARNING
Curved mirror surfaces (for example convex)
enlarge the field of vision. However, they
make objects in the mirror appear smaller and
farther away. When using these mirrors to es-
timate your distance to vehicles behind you
when changing lanes, you could estimate in-
correctly, which increases the risk of an acci-
dent.

@) Note
— Applies to: vehicles with power folding exte-
rior mirrors: If the mirror housing was
moved by outside forces (such as an impact
when maneuvering), you must use the pow-
er folding function to fold the mirror all the
way out. The mirrors will make a loud noise
when they latch into place. The mirror hous-
ing must not be moved back into place by
hand because this could impair the function
of the mirror mechanism.
— Applies to: vehicles without power folding
exterior mirrors: If the mirror housing was
moved by outside forces (such as an impact
when maneuvering), you must move it back
in place by hand.
— If you wash the vehicle in an automatic car
wash, you must fold the exterior mirrors in
to reduce the risk of damage to the mirrors.
Never fold power folding exterior mirrors*
by hand. Only fold them in and out using
the power controls.
@) Tips
—If the power adjusting function malfunc-
tions, the glass in both mirrors can be ad-
justed by pressing on the edge of it by hand.
— Certain settings are automatically stored
and assigned to the active user.
Dimming the mirrors
Manual dimming rearview mirror
> Pull the lever on the bottom of the mirror back.
Automatic dimming rearview mirror*
> The interior and exterior mirrors* dim automat-
ically when light shines on them, for example
from headlights on a vehicle behind you.

Z\ WARNING
— If the glass on an automatic dimming mir-
ror* breaks, electrolyte can leak out. This
liquid can irritate the skin, eyes and respira-
tory system. If there is contact with the flu-
id, flush immediately with plenty of water.
Consult a physician if necessary.
— Repeated or long-term exposure to electro-
lyte fluid can lead to irritation of the air-
ways, especially in people with asthma or
other respiratory conditions. Take deep >

53

Sitting correctly and safely

> Insert a suitable object, such as the the extend-
ed vehicle key or mechanical key, into the re-
lease point @ on the inside or outside of the
base.
> Press the button @) and pull the head restraint
out of the backrest.
Installing the headrests
> Fold the backrest forward slightly > page 82.
>» Slide the posts on the head restraint down into
the guides until the posts click into place.
> Press the button @) and slide the head restraint
all the way down. It should not be possible to
remove the head restraint from the backrest
without pressing the button.
Safety belts
Each seat is equipped with a three-point safety
belt. Safety belts that are worn correctly are the
most effective way to reduce the risk of serious or
fatal injuries in a collision. Therefore, wear your
safety belt correctly and make sure that all vehi-
cle passengers are also wearing their safety belts
correctly when the vehicle is moving.
Even though your vehicle is equipped with an air-
bag system, every vehicle passenger must still al-
ways wear the appropriate safety belt. In addi-
tion to their normal protective function, safety
belts also hold vehicle occupants in the correct
seating position in the event of a collision so that
the airbags can deploy correctly and provide addi-
tional protection. Safety belts provide protection
during collisions when the airbags do not deploy
or if they have already deployed.

Z\ WARNING
The risk of serious or fatal injury increases if
the safety belt is not fastened, if it is worn in-
correctly, or if it is damaged.
— All vehicle occupants, including the driver,
must fasten their safety belts correctly be-
fore every trip and must always keep their
safety belts fastened during the trip, regard-
less of whether the seat is equipped with an
airbag or not. This also applies to children

64


that are seated in a child safety seat that is
appropriate for their weight and age and
that is secured with a safety belt.
In the event of a collision, vehicle occupants
that are not wearing safety belts could be
propelled through the vehicle interior and
collide with vehicle components, such as the
steering wheel, instrument panel, wind-
shield, or doors. In some situations, vehicle
occupants could also be ejected from the ve-
hicle. Vehicle occupants in the rear seats
who do not wear safety belts not only en-
danger themselves, but also other people in
the vehicle.
Only one person may be fastened with a
safety belt at a time. Never secure more
than one person, including children, with a
single safety belt.
Never allow children or infants to ride on an-
other person's lap and be belted into the
safety belt with them.
Insert the belt buckle only in the belt latch
belonging to the corresponding seat, so that
the protective function is not impaired.
To ensure the maximum protective function
of the safety belts, all vehicle passengers
must sit in the correct seating position
=> page 59.
Check the condition of your vehicle’s safety
belts regularly > page 248. If you find dam-
age to the belt webbing, the belt connec-
tions, the retractor, or the buckle, have the
damaged safety belt replaced by an author-
ized Audi dealer or authorized Audi Service
Facility.
The safety belts must not be removed or
modified in any way. Do not attempt to re-
pair the safety belts yourself.
Safety belts that are strained during an acci-
dent, and thus stretched, must be replaced
by an authorized Audi dealer or authorized
Audi Service Facility.

8W1012721BB
Sitting correctly and safely


ZA\ WARNING
Have the malfunction in the safety systems in-
spected immediately. Otherwise, there is a

Pye foyaCoy a)

risk that the systems may not activate during
an accident, which increases the risk of seri-
ous or fatal injury.



Fig. 68 Airbag overview image (enlarged section: deployed airbags)
The locations of the airbags are labeled with
“AIRBAG”. The following airbags are installed in
your vehicle:
Driver's airbag
Front passenger's airbag
Front side airbags and rear, if applicable
Head curtain airbag with ejection mitigation
OOOO Knee airbags
Airbags offer the best possible protection in your
vehicle during an accident when they are used to-
gether with safety belts that are fastened cor-
rectly, and when passengers are sitting in the cor-
rect seating position. Airbags are a supplementa-
ry restraint system and do not replace safety
belts.

RAZ-0239

Airbags may deploy during front-impact, side-im-
pact, or rollover accidents.
The deployment area for the airbag system can-
not be defined for every situation, since the cir-
cumstances surrounding accidents can vary wide-
ly. Factors that play an important role include the
condition of the object that the vehicle hits (hard
or soft), the angle of impact, vehicle speed, etc.
The deciding factor for the deployment of the air-
bag system is the deceleration that occurs during
an accident. Sensors in the vehicle are designed
to detect the severity of an accident in conjunc-
tion with the control module, and to provide a
targeted and timely deployment of the restraint
system. If the vehicle deceleration that is meas-
ured during an accident is below the specified
reference values in the control module, then the
airbags will not deploy, even though the vehicle >
69

8W1012721BB
Driving

This message appears when specific conditions
are not met during a Stop phase. The Start/Stop
system will not be able to restart the engine. The
engine must be started with the
START ENGINE STOP] button.


Vehicle starting system: malfunction! Please
contact Service
There is a malfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dealer or
authorized Service Facility as soon as possible to
have the malfunction corrected.
Brakes
General information
You can apply the vehicle's brakes using the brake
pedal.
Operating noise
Noises may occur when braking depending on the
speed, braking force, and outside conditions such
as temperature and humidity.
Braking effect
The response time from the brakes depends on
the weather and environmental conditions. To
ensure the optimal braking effect, the brake sys-
tem is cleaned at regular intervals. This is done
by applying the brake pads to the brake rotors for
a short period of time when driving at high
speeds when the windshield wipers are switched
on.
If the brake system becomes damp, for example
after driving in heavy rain, the braking effect may
be delayed. Other factors that could temporarily
increase the response time of the brakes include:
— Wet conditions
— Low temperatures, ice, and snow
— Roads covered in salt
— Dirty brake pads
Corrosion
Corrosion may form on the brake rotors if there is
no heavy braking, if the vehicle is not driven for
long periods of time, or if the vehicle is not driv-
en
frequently or for long distances. In this case,
braking heavily several times while driving at
high speeds can clean the brake rotors > A\.
Brake pads
New brake pads do not achieve their full braking
effect during the first 250 miles (400 km). They
must be “broken in” first. However, you can com-
pensate for the slightly reduced braking force by
pressing firmly on the brake pedal. Avoid heavy
braking during the break-in period.
Brake pad wear depends largely on the way the
vehicle is driven and on operating conditions.
Brake pad wear increases when driving frequently
in the city or short distances or when using a very
sporty driving style.
Ceramic brakes
Applies to: vehicles with ceramic brakes
Ceramic brakes provide excellent deceleration
rates.
The break-in period for new ceramic brakes may
be significantly longer than for standard brake
rotors. Due to the properties of the material,
they may cause noises at lower speeds. Ceramic
brakes also absorb more moisture in wet condi-
tions. Therefore, there will temporarily be less
braking force than when the brakes are dry. You
can compensate for this by pressing the brake
pedal harder.

ZA\ WARNING
— Only apply the brakes for the purpose of
cleaning the brake system when road and
traffic conditions permit. You must not en-
danger other road users and increase the
risk of an accident.
— Due to the risk of injury, only have an au-
thorized Audi dealer or authorized Audi
Service Facility work on the brake system.
Incorrect repairs could impair the function.
— Never let the vehicle roll while the engine is
stopped because this increases the risk of an
accident.
— During automatic braking maneuvers, the
brake pedal may move downward automati-
cally. To reduce the risk of injury, do not
place your foot under the brake pedal.

101

Driving dynamic

All wheel drive (quattro)
Applies to: vehicles with all wheel drive
The all-wheel drive system distributes the driving
power variably to the front and rear axle to im-
prove the driving characteristics. It works togeth-
er with selective wheel torque control, which can
activate when driving through curves
=> page 109.
Applies to: vehicles with quattro ultra: If the driv-
ing situation does not require all wheel drive,
then the rear section of the drivetrain will decou-
ple to save fuel. The system constantly deter-
mines and anticipates if all wheel drive is needed.
This allows the rear drivetrain to recouple shortly
before it is needed.
The all-wheel drive system is designed for high
engine power. Your vehicle is exceptionally pow-
erful and has excellent driving characteristics
both under normal driving conditions and on
snow and ice. Always read and follow safety pre-
cautions > A.

ZX WARNING
— Even in vehicles with all wheel drive, you
should adapt your driving style to the cur-
rent road and traffic conditions to reduce
the risk of an accident.
— The braking ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not different from a two wheel drive vehi-
cle. Do not drive too fast because this in-
creases the risk of an accident.
— Note that on wet streets, the front wheels
can “hydroplane’” if driving at speeds that
are too high. Unlike front wheel drive
vehicles, the engine RPM does not increase
suddenly when the vehicle begins hydro-
planing. Adapt your speed to the road condi-
tions to reduce the risk of an accident.
Sport differential
Applies to: vehicles with sport differential

The sport differential distributes the drive power
to the rear axle based on the situation. The goal
108
is a high level of agility and ability to accelerate
on curves. The vehicle is very responsive to steer-
ing. The settings depend on the selected Audi
drive select* mode.
it} All wheel drive: malfunction! You can con-
tinue driving. Please contact Service
Drive immediately to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction repaired.
it} Sport differential: malfunction! Please con-
tact Service
Drive immediately to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction repaired.
it} All wheel drive: too hot. Please adapt driv-
ing style. See owner’s manual
The transmission temperature has increased sig-
nificantly due to the sporty driving manner. Drive
in a less sporty manner until the temperature re-
turns to the normal range and the indicator light
switches of.
it} Sport differential: temperature too high.
Please adapt driving style
The transmission temperature has increased sig-
nificantly due to the sporty driving manner. Drive
in a less sporty manner until the temperature re-
turns to the normal range and the indicator light
switches of.

ZA WARNING
Contact an authorized Audi dealer or author-
ized Audi Service Facility if the sport differen-
tial is faulty or malfunctioning. The repair
must be performed by trained personnel us-
ing the correct oil in order to ensure safety.

8W1012721BB
Driving information

— If traffic signs do not conform to the standard
format
— If traffic signs are damaged or bent
— If traffic signs are displayed on sign holders
with electronic signs
— If the traffic signs or the roadways have
changed, and the navigation data is no longer
up-to-date

ZA WARNING
— Follow the safety precautions and respect
the limits of the assist systems, sensors,
and cameras > page 114.
— Under some circumstances, traffic sign rec-
ognition may not detect traffic signs correct-
ly or detect them at all. As a result, the sys-
tem may not display the correct speed limit
or any speed limit.

@ Tips
— Traffic sign recognition does not adapt your
vehicle's speed to match the speed Limit.
— The display in the instrument cluster is
based on the units of measurement used for
speed in the country where the vehicle is be-
ing operated. As a result, a display of 50 in
the instrument cluster can mean either mph
or km/h, depending on the country.
Applies to: vehicles with camera-based traffic sign recognition
Accessing traffic sign recognition
> Select in the instrument cluster: vehicle func-
tions tab > Traffic signs.
Setting a traffic sign based speed warning
> Applies to: MMI: Select on the home screen:
VEHICLE > Driver assistance > Speed warning.
You can select a warning threshold. If it is ex-
ceeded, then the current detected speed limit
will be shown in the display with an exclamation
point for the duration that it is exceeded and it
will blink for a short time.
Applies to: vehicles with camera-based traffic sign recognition
Traffic sign recognition: unavailable. Camera
view limited due to environm. conditions
The camera’s visual field is covered. Clean the
windshield.
Traffic sign recognition: currently limited.
See owner's manual
This message appears if navigation system data
is not available, for example on newly-construct-
ed roads. The speed limit display will be tempo-
rarily limited, which increases the risk of an incor-
rect display. If this message continues to appear,
drive immediately to an authorized Audi dealer or
authorized Audi Service Facility to have the mal-
function repaired.
No traffic sign information available
Depending on the area, there is no valid naviga-
tion data and no speed limits were detected. This
may also appear if there is a recommended
speed, but no speed limit (for example when
driving on and off the expressway).
Malfunction! See owner's manual
The system may not function correctly so it has
been switched off. See an authorized Audi dealer
or authorized Audi Service Facility for assistance.
Function currently unavailable. See owner's
manual
If this message appears on vehicles without cam-
era-based traffic sign recognition, then the traffic
light
information function is currently unavaila-
ble. See > page 121.
119

Parking and maneuvering

forward faster than approximately 6 mph (10
km/h).

ZA\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 114.
@) Note
Keep enough distance from the curb to avoid
damage to the rims.
G) Tips
— If the parking aid is switched off, it can only
be reactivated automatically when one of
the following conditions is met:
— The vehicle speed exceeds 6 mph (10 km/h)
— The ignition was switched off and back on
again
— The parking brake was set and then released
— The “P” gear was engaged and released
again


Applies to: vehicles with parking aid plus

Fig. 129 Center display: distance display
If the sensors detect an obstacle, audible and vis-
ual signals will warn you.
Visual warnings
The visual warnings in the center display help you
to detect the critical vehicle area and to estimate
the distance to an obstacle.
Red segments (2) show detected obstacles that
are in your vehicle's path. The red lines 2) mark
the expected direction of travel based on the
steering angle. A white segment (8) indicates a
detected obstacle that is outside of the vehicle's
148
path. The closer your vehicle comes to the obsta-
cle, the closer the segments will move to the ve-
hicle. The collision area has been reached when
the next to last segment is displayed. Obstacles
in the collision area, including those outside of
the vehicle's path, are shown in red. Do not con-
tinue driving farther.
Audio signals
The closer your vehicle gets to a detected obsta-
cle, the shorter the time between the audible sig-
nals. A continuous tone sounds when an obstacle
is less than approximately 1 foot (0.30 m) away
from the front or rear of the vehicle. A continu-
ous tone sounds when an obstacle is less than
approximately 0.7 feet (0.20 m) away from the
sides* of the vehicle. Do not continue driving for-
ward or in reverse >@).
> To deactivate audio signals while parking, press
(Jin the center display. The audio signals will
be automatically activated again the next time
the parking aid is activated.
Adjusting the volume
You can adjust the volume to your preferences.
The settings depend on the vehicle equipment.
> Applies to: MMI: Select on the home screen:
VEHICLE > Parking aid. Or:
> Press L-] in the center display when the parking
aid is active.


Possible settings:
Front volume - Volume for the front and side*
area.
Rear volume - Volume for the rear area.
Entertainment fader - The volume of the audio/
video source is lowered when the parking aid is
activated.
The new level is demonstrated briefly* when the
volume is adjusted.
Error messages
If P4 appears, the sensor in the respective area
or the speaker is faulty. Drive immediately to an
authorized Audi dealer or authorized Audi Service
Facility to have the malfunction repaired.

Wheels

be five 150 lbs. passengers in
your vehicle, the amount of
available cargo and luggage
load capacity is 650 lbs.
(1400-750 (5 x 150) = 650
lbs.)
5. Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely ex-
ceed the available cargo and
luggage load capacity calculat-
ed in Step 4.
6. If your vehicle will be towing a
trailer, load from your trailer
will be transferred to your vehi-
cle. Consult this manual to de-
termine how this reduces the
available cargo and luggage
load capacity of your vehicle.
>Check the tire sidewall
(=> page 228, fig. 168) to deter-
mine the designated load rating
for a specific tire.
Wheel bolts and rims
Wheel bolts
Wheel bolts must be clean and loosen/tighten
easily.
Rims
Rims with a bolted rim ring* or with bolted wheel
covers* consist of multiple pieces. These compo-
nents were bolted together using special bolts
and a special procedure. You must not repair or
disassemble them > A\.
242

Z\ WARNING
Wheel bolts that are tightened or repaired in-
correctly can become loose and result in loss
of vehicle control, which increases the risk of
an accident. For the correct tightening specifi-
cation, see > page 258, Finishing.
— Always keep the wheel bolts and the threads
in the wheel hub clean and free of grease.
— Only use wheel bolts that fit the rim.
— Always have damaged rims repaired by an
authorized Audi dealer or authorized Audi
Service Facility. Never repair or disassemble
rims yourself, because this increases the risk
of an accident.
Winter tires significantly improve the vehicle's
handling when driving in winter conditions. Be-
cause of their construction (width, compound,
tread pattern), summer tires provide less traction
on ice and snow.

» Use winter tires on all four wheels.
> Only use winter tires that are approved for your
vehicle.
> Please note that the maximum permitted
speed may be lower with winter tires > A\ in
General information on page 227. An author-
ized Audi dealer or authorized Audi Service Fa-
cility can inform you about the maximum per-
mitted speed for your tires.
> Check the tire pressure after installing wheels
=> page 237.
The effectiveness of winter tires is reduced great-
ly when the tread is worn down to a depth of
0.16 in (4 mm). The characteristics of winter tires
also decrease greatly as the tire ages, regardless
of the remaining tread.
@) For the sake of the environment
Reinstall summer tires at the appropriate
time, because they provide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear, and fuel
consumption.

8W1012721BB
Wheels

@) Tips
You can also use all season tires instead of
winter tires. Please note that in some coun-
tries where winter tires are required, only win-
ter tires with the 44 symbol may be permit-
ted.
Snow chains improve both driving and braking in
winter road conditions.
> Only install snow chains on the front wheels.
> Check and correct the seating of the snow
chains after driving a few feet, if necessary. Fol-
low the instructions from the manufacturer.
> Note the maximum speed of 30 mph
(50 km/h). Observe the local regulations.
Use of snow chains is only permitted with certain
rim/tire combinations due to technical reasons.
Check with an authorized Audi dealer or author-
ized Audi Service Facility to see if you may use
snow chains.
Use fine-mesh snow chains. They must not add
more than 0.53 in (13.5 mm) in height, including
the chain lock.
You must remove the snow chains on roads with-
out snow. Otherwise, you could impair driving
ability and damage the tires.

ZA WARNING
Using incorrect snow chains or installing snow
chains incorrectly can result in loss of vehicle
control, which increases the risk of an acci-
dent.
@) Note
Snow chains can damage the rims and wheel
covers* if the chains come into direct contact
with them. Remove the wheel covers* first.
Use coated snow chains.
@ Tips
When using snow chains, it may be advisable
to limit the ESC > page 110.

Low-profile tires
Applies to: vehicles with low-profile tires
Compared to other tire/rim combinations, low-
profile tires offer a wider tread surface and a
larger rim diameter with shorter tire sidewalls.
This results in an agile driving style. However, it
may reduce the level of comfort and increase
road noise when driving on roads in poor condi-
tion.
Low-profile tires can become damaged more
quickly than standard tires when driving over
large bumps, potholes, manhole covers, and
curbs. Therefore, it is particularly important to
maintain the correct tire pressure > page 237.
To reduce the risk of damage to the tires and
rims, drive very carefully on poor roads.
Check your wheels regularly every 2,000 mi
(3,000 km) for damage. For example, check for
bulges/cracks on the tires or deformations/cracks
on the rims.
After a heavy impact or damage, have the tires
and rims inspected or replaced immediately by
an authorized Audi dealer or authorized Audi
Service Facility.
Low-profile tires can wear out faster than stand-
ard tires.
Uniform tire quality grading
— Tread wear
— Traction AAABC
— Temperature ABC
Quality grades can be found where applicable on
the tire side wall between tread shoulder and
maximum section width > page 228, fig. 168.
For example: Tread wear 200, Traction AA, Tem-
perature A.
All passenger car tires must conform to Federal
Safety Requirements in addition to these grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
243
>