2021 AUDI Q5 heating

80B012721BA
Checking and Filling

> Turn the cap to the right to tighten it until you
feel resistance a second time.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.

ZA\ WARNING
— The engine/motor compartment in any vehi-
cle is a potentially dangerous area. Stop the
engine and allow it to cool before working in
the engine compartment. Always follow the
information found in > page 246, General
information.
— Never open the hood if you can see or hear
steam or coolant escaping from the motor
compartment. This increases the risk of
burns. The cooling system is under pressure.
When you no longer see or hear steam or
coolant escaping, you may open the motor
compartment with caution.
— When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away
from children. There is a risk of poisoning.

A WARNING
Applies to: vehicles with plug-in hybrid drive
The coolant expansion tank for the high-volt-
age system may only be opened or filled by an
authorized Audi dealer or authorized Audi
Service Facility.
— The coolant expansion tank cap is equipped
with a seal that must never be removed un-
der any circumstances > page 249, fig. 171.
If the coolant expansion tank for the high-
voltage system is not sealed, please contact
an authorized Audi dealer or authorized
Audi Service Facility.

— When adding coolant, it may leak into the
inside of high-voltage components and
cause a short circuit, increasing the risk of
fire.


@) Note
Do not continue driving if the coolant expan-
sion tank is empty. Do not add any coolant,
because air could enter the cooling system
and damage the engine. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.
Brake fluid



BFV-0229]

Fig. 174 Motor compartment: cap on brake fluid reservoir
Observe the safety precautions > page 246, Gen-
eral information.
Checking the brake fluid level
The brake fluid reservoir is located under a cover
on the driver’s side.
> Lift the cover > page 249, fig. 171 at both
openings and remove it.
> Read the brake fluid level on the brake fluid res-
ervoir > page 249, fig. 171. The brake fluid lev-
el must be between the MIN and MAX markings
ofA.
The brake fluid level is monitored automatically
Message
Ea / @ Brakes: stop vehicle and check brake
fluid level
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
255
>

80B012721BA
Checking and Filling

Multiple batteries with different technologies
may be installed in your vehicle:
— Vehicle battery (for example, for starting the
engine, basic power supply) > page 257, 12
Volt vehicle battery or > page 258, Other bat-
tery types
— Auxiliary battery (for example, for recuperation
or optional equipment) > page 258, Other bat-
tery types
— Plug-in hybrid drive: High-voltage battery (for
example, for electric driving) > page 122, In-
troduction.
Not running the vehicle for long periods of
time
The battery will gradually drain if the vehicle
does not run for long periods of time. To ensure
that the vehicle can still be started, the electrical
equipment will be limited or switched off. Some
convenience functions, such as interior lighting
or power seat adjustment, may not be available
under certain circumstances. The convenience
functions will be available again when you start
the
engine.
Even when electrical equipment is switched off,
the equipment can still drain the battery if the
vehicle is not driven for long periods of time.
Deep draining results in a chemical reaction that
destroys the inside of the battery. The battery
must be charged every month to prevent this
= page 258. Contact an authorized Audi dealer or
authorized Audi Service Facility for more infor-
mation.
Winter operation
Cold weather places an especially high load on
the 12 Volt vehicle battery. Have the battery
checked by an authorized Audi dealer or author-
ized Audi Service Facility before cold weather be-
gins.

authorized Audi dealer or authorized Audi
Service Facility.
— Never connect a charging cable or jump
start cable directly to the 12 Volt vehicle
battery. Only use the connections in the en-
gine compartment > page 258.


Z\ WARNING
California Proposition 65 Warning:
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.

@) Note
— If the vehicle will be parked for long periods
of time, protect the battery against the cold
so that it will not be destroyed by “freezing”
=> page 258, Charging the 12 Volt vehicle
battery.
— There are electrical components under the
cargo floor behind a trim panel that warm
up during operation. To reduce the risk of
the components overheating, do not store
objects such as blankets under the cargo
floor. If the components overheat, they will
switch off temporarily. This will be indicated
by a message that will be displayed in the
instrument cluster until the temperature re-
turns to normal.
12 Volt vehicle battery
Explanation of warnings:
Always wear eye protection.



ZA\ WARNING
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an

Fire, sparks, open flame, and smoking are
forbidden.


Battery acid is highly corrosive. Always
wear protective gloves and eye protection.
A highly explosive mixture of gases can
form when charging batteries. >


257

Care and cleaning


ZA\ WARNING
— Never immerse the Audi e-tron charging sys-
tem and connectors in water.
— The Audi e-tron charging system must only
be cleaned when the control unit is com-
pletely disconnected from the power supply
and from the vehicle.

@) Note
— Headlights and tail lights
— Never clean the headlights or tail lights
with a dry cloth or sponge because the
lights could be damaged.
— Do not use any cleaning products that con-
tain alcohol, because they could cause
cracks to form.
— Wheels
— Never use any paint polish or other abra-
sive materials.
— Damage to the protective layer on the
rims, such as stone chips or scratches,
must be repaired immediately.
— Camera lenses
— Never use warm or hot water to remove
snow or ice from the camera lens. This
could cause the lens to crack.
— Never use abrasive cleaning materials or
alcohol to clean the camera lens. This
could cause scratches and cracks.
— Door windows
— Remove snow and ice on windows and ex-
terior mirrors with a plastic scraper. To re-
duce the risk of scratches, move the scra-
per only in one direction and not back and
forth.
— Never remove snow or ice from door win-
dows and mirrors using warm or hot water
because this could cause cracks to form.
—To reduce the risk of damage to the rear
window defogger, do not apply any stick-
ers on the heating wires on the inside of
the window.
— Decorative parts and trim
— Never use chrome care or cleaning prod-
ucts.
— Paint
286
— To reduce the risk of scratches, the vehicle
must be free of dirt and dust before pol-
ishing or waxing.
—To prevent paint damage, do not polish or
wax the vehicle in direct sunlight.
—To reduce the risk of paint damage, do not
polish away rust spots.
— Remove cosmetics and sunscreen immedi-
ately because they could damage the
paint.
— Decorative decals
—To reduce the risk of damage, do not use
any rough powder or abrasive cleaning
products.
—To reduce the risk of damage, do not pol-
ish decorative decals that have a matte or
printed finish.
— Due to the risk of damage, do not use an
ice scraper to remove snow and ice on win-
dows with decorative decals on them.
— Displays and instrument cluster
— Make sure that the display and instrument
cluster are switched off and have cooled
down before cleaning. To switch off the
center display, select on the MMI home
screen: SETTINGS > Display & brightness
> MMI > Screen cleaning.
— Displays, the instrument cluster, and the
trim surrounding it must not be cleaned
with dry cleaning methods because they
could become scratched.
— Make sure no fluids enter the spaces be-
tween the instrument cluster and the
trim, because that could cause damage.
— Controls
— Make sure that no fluids enter the con-
trols, because this could cause damage.
— Safety belts
— Do not remove the safety belts to clean
them.
— Never clean safety belts or their compo-
nents with chemicals or with corrosive flu-
ids or solvents and never allow sharp ob-
jects to come into contact with the safety
belts. This could cause damage to the belt
webbing.

80B012721BA
Care and cleaning

—If there is damage to the webbing, the
connections, the retractors, or the buck-
les, have them replaced by an authorized
Audi dealer or authorized Audi Service Fa-
cility.
— Textiles/artificial leather/microfiber
— Never treat artificial leather or microfiber
with leather care products, solvents, floor
polish, shoe polish, spot remover, or simi-
lar products.
— Have a cleaning specialist remove stub-
born stains to reduce the risk of damage.
— Never use steam cleaners, brushes, hard
sponges, etc. when cleaning.
— Do not turn on the seat heating* to dry
the seat.
— Objects with sharp edges, such as zippers
or rivets on clothing or belts, can cause
damage to the surface.
— Open hook and loop fasteners, for exam-
ple on clothing, can damage seat covers.
Make sure hook and loop fasteners are
closed.
— Natural leather
— Never treat leather with solvents, floor
polish, shoe polish, spot remover or simi-
lar products.
— Objects with sharp edges, such as zippers
or rivets on clothing or belts, can cause
damage to the surface.
— Never use steam cleaners, brushes, hard
sponges, etc. when cleaning.
— Do not turn on the seat heating* to dry
the seat.
—To help prevent the leather from fading,
do not leave the vehicle in direct sunlight
for long periods of time. If leaving the ve-
hicle parked for long periods of time, you
should cover the leather to protect it from
direct sunlight.
— Wall mount clip
— Do not us any abrasive cleaning products
or any that contain alcohol, because these
increase the risk of discoloration.
@) Tips
— Insects are easier to remove from paint that
has been freshly waxed.
— Regular waxing can prevent rust spots from
forming.
— Decorative decals can age due to environ-
mental conditions, which can result in dam-
age such as brittleness. The color may fade
if exposed to excessive sunlight.
Taking your vehicle out
of service
If you would like to take your vehicle out of serv-
ice for a long period of time, contact an author-
ized Audi dealer or authorized Audi Service Facili-
ty. You can receive information about the meas-
ures to take depending on the conditions for tak-
ing the vehicle out of service (duration, location,
etc.).
287

Emergency assistance

Snow chains
Using snow chains on the collapsible spare tire is
not permitted for technical reasons.
If you need to drive with snow chains and your
vehicle has a flat tire, install the collapsible spare
tire on the axle where snow chains are not per-
mitted > page 277. Install the snow chains on
the tire that you removed, and install that in
place of the flat tire.

ZA WARNING
— Only use the collapsible spare tire in emer-
gencies and drive very carefully, especially if
it is
more than six years old.
— The compressor and the hose can become
very hot during operation which increases
the risk of burn injuries.
— After installing a collapsible spare tire, the
tire pressure must be checked as quickly as
possible to reduce the risk of an accident.
— Do not drive faster than 50 mph (80 km/h)
with the collapsible spare tire. Driving faster
than that increases the risk of an accident.
—To reduce the risk of an accident, avoid hard
acceleration or braking and driving fast
around curves with the collapsible spare
tire.
— Never drive using more than one collapsible
spare tire, because this increases the risk of
an accident.
— Normal tires or winter tires must not be
mounted on the collapsible spare tire rim.

@ Note
The compressor must be switched off after six
minutes at the most to reduce the risk of
overheating. Let the compressor cool down
for several minutes before using it again.
294
Jump starting
You should only perform the steps that follow if
you have the necessary tools and technical ex-
pertise.
If the engine does not start because the vehicle
battery is drained, you can jump start your vehi-
cle using another vehicle. Jump start cables are
needed to do this.
Both vehicle batteries must have 12 V nominal
voltage. The voltage capacity (Ah) of the vehicle
battery that is giving power must not be less
than the capacity of the drained vehicle battery.
Jump start cable
Only use a jump start cable with a large enough
diameter. Note the manufacturer's specifica-
tions.
Only use a jump start cable with insulated termi-
nal clamps.
Positive cable - usually red.
Negative cable - usually black.

ZA WARNING
— A drained battery can freeze at tempera-
tures around 32 °F (0 °C). If the vehicle bat-
tery is frozen, it must be thawed before con-
necting the jump start cables. If it is not,
the risk of an explosion and chemical burns
increases. After jump starting the vehicle,
drive to an authorized Audi dealer or author-
ized Audi Service Facility immediately to
have the vehicle battery checked.
— Read the warnings when working in the en-
gine compartment > page 246.
— Handling the jump start cables incorrectly
may cause the vehicle battery to explode
and lead to serious injuries.
() Note
— Jump start cables can cause considerable
damage to the vehicle electrical system if
they are connected incorrectly.

Fuses and bulbs

@) Note
If a new fuse burns out again shortly after you
have installed it, have the electrical system
checked as soon as possible by an authorized
Audi dealer or authorized Audi Service Facili-
ty.
G@) Tips
— The following table does not list fuse loca-
tions that are not used.
— Some of the equipment listed in the follow-
ing tables applies only to certain model ver-
sions or certain optional equipment.

Fig. 198 Driver's footwell (left-hand drive vehicle): fuse
panel with plastic clip
300
3 2
= & a

a
Ss $
2 8

Fig. 199 Front passenger's footwell (right-hand drive vehi-
cle): fuse panel with plastic clip

Fuse panel


No. | Equipment

Catalytic converter heating

2 |Engine components

Exhaust doors, fuel injectors, radiator in-
let, crankcase housing heating

Vacuum pump, hot water pump, NOx sen-
4 |sor, particulate sensor, biodiesel sensor,
exhaust doors

Brake light sensor

6 | Engine valves, camshaft adjustment

Heated oxygen sensors, mass airflow sen-
sor, water pump

Water pump, high pressure pump, high
8 | pressure regulator valve, temperature
valve, engine mount

Hot water pump, motor relay, 48 V drive-
train generator, 48 V water pump

10 | Oil pressure sensor, oil temperature sensor

Clutch position sensor, 48 V drivetrain
11 | generator, water pump, 12 V drivetrain
generator

12 | Engine valves, engine mount


13 | Engine cooling

80B012721BA
Fuses and bulbs











































Fuse panel (4) (brown) Fuse panel © (black)
14 | Fuel injectors, engine control module 1 Left rear door control module, left rear
15 | Ignition coils, heated oxygen sensors power window
16 | Fuel pump 12 | Parking heater
Fuse panel (8) (red) Fuse panel (©) (black)
No. | Equipment No. | Equipment
Anti-theft alarm system Front seat electronic, seat ventilation,
2. [Engine control module 1 rearview mirror, testclimate control sys-
tem control panel, windshield heating, di-
3 Left front
seat electronics, lumbar sup- agnostic connection
port, massaging seat a A 7
Diagnostic interface, vehicle electrical sys-
4 |Automatic transmission selector lever 2 tem-control module
5 [Horn 3 |Sound generator
6 | Parking brake 4 |Clutch position sensor
7 | Diagnostic interface 5 | Engine start, emergency shut-off
8 | Roof electronics control module Diagnostic connection, traffic information
9 |Emergency call module 6 antenna (TMC)
10 | Airbag control module 7 |USB input
11 Electronic Stabilization Control (ESC), An- 8 | Garage door opener
ti-Lock Braking System (ABS) Audi adaptive cruise control, distance reg-
12 | Diagnostic connection, light/rain sensor 2 ulation
13 | Climate control system 10 | Exterior sound, active accelerator pedal
14 | Right front door control module 11 | Front camera
15 | Climate control system compressor 12 | Right headlight
16 | Brake system pressure reservoir 13 | Left headlight
Fuze panel © (black) 14 |Transmission fluid cooling
No. | Equipment 15 |Alarm and hands-free calling system
1 | Front seat heating Fuse panel (©) (red)
2 |Windshield wipers No. | Equipment
3 |Left headlight electronics 1 {Ignition coils
4 | Panoramic glass roof 2 |Climate control system compressor
5 |Left front door control module 5 |Left headlight
6 | Sockets 6 |Automatic transmission
7 Right rear door control module, right rear 7 |Instrument panel
power window 8 |Climate control system blower
All wheel drive control module 9 | Right headlight
9 |Right headlight electronics 10 | Dynamic steering
10 Windshield washer system/headlight 11 | Engine start, thermal management
washer system control module 7
12 |Oil pump

301

Fuses and bulbs
Fuse assignment - Driver's side of the Fuse assignment - Left side of the luggage
(ole 4) g (eT Tata ahg
Q oO

cy ¢
2
= = a

Fig. 200 Driver side cockpit: fuse panel with plastic bracket

Fuse panel

No. | Equipment
















4 |Head-up display
5 |Audi music interface, USB input
6 | Front climate control system control panel
7 |Steering column lock
8 | Center display
Fig. 201 Left side of the luggage compartment: fuse panel
9 |Instrument cluster with plastic clip
10 | Volume control
11 | Light switch, switch module Fuse panel (@) (black)
12 | Steering column electronics No. | Equipment
14 | Infotainment system 1 |Thermal management, coolant pumps
15 | Steering column adjustment 2 | Windshield defroster
16 Steering column electronics, steering 3_|Windshield defroster
wheel heating 5 |Air suspension/suspension control
6 | Automatic transmission
7 |Rear window defogger
8 | Rear seat heating
9 |Left tail lights
10 | Airbag control module
Luggage compartment lid lock, fuel filler
11 | door lock, convenience system control
module

12 |Luggage compartment lid

Fuse panel (8) (red)
No. | Equipment


2 |High-voltage battery

3 | High-voltage battery water pump

4 | Electric motor

302