cooling AUDI Q3 2018 User Guide

Warm and cold
& WARNING
-You should not use the recirculation mode
for an extended period of time, because no
fresh air is drawn in and the windows can
fog when cooling mode is switched off. This
increases the risk of an accident .
- Individuals with reduced sensitivity to pain
or temperature could develop burns when
using the seat heating* function. To reduce
the risk of injury, these individuals should
not use seat heating*.
(D Note
To avoid damaging the seat heating* ele­
ments, do not kneel on the seats or place
heavy pressure on one area of the seat.
56

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Trailer towing
Driving with a trailer
General information
Your vehicle is primarily intended for transport­ ing people and luggage . However, if you drive
with a trailer , follow the technical requirements,
the operation and driving tips, and the legal reg­
ulations.
Driving with a trailer affects the vehicle's fuel
consumption, performance and wear.
It also re­
quires higher concentration from the driver.
A WARNING
Do not transport any people in a trailer due to
the risk of fatal injury.
Technical requirements
Certain requirements must be met when towing
a trailer.
Trailer hitch
Only use a trailer hitch with a removable ball hitch mount and ball hitch. The trailer hitch must
be permitted for the vehicle , the trailer and the
permitted total weight of the trailer being
pulled. Above all, it must be securely and safely
attached to the vehicle trailer.
Never mount a trailer hitch on the bumper. The
trailer hitch must be mounted in a way that does
not impair the function of the bumper. Do not
make any changes to the exhaust system and the
brake system.
Check regularly if the trailer hitch is securely mounted. Always follow the instructions given by
the trailer hitch manufacturer.
Trailer brakes
If the trailer has its own brake system, then fol­
low the manufacturer specifications. However,
the brake system on the trailer must never be
connected to the vehicle brake system.
Trailer towing
Engine cooling system
Driving with a trailer means a higher load on the
engine and the cooling system. The cooling sys­
tem must be designed for additional load and
contain enough coolant
c::> (D .
A WARNING
-
-Never mount a "weight-distributing" or
"load-balancing" trailer coupler as the trail­
er hitch . The vehicle was not designed for
these types of trailer hitches . The trailer
hitch can malfunction and the trailer can
break off from the vehicle.
- If the trailer is equipped with electronic
brakes, these brakes cannot be activated by
a factory-installed control system, which in­
creases the risk of an accident.
- To reduce the risk of injury, always remove
the ball hitch mount if no trailer is mount­
ed.
(D Note
Longer inclines cannot be driven without a
suitable cooling system, especially if the out­
side temperatures are high. otherwise, this
increases the risk of engine damage.
' Operating instructions
Several things must be noted when towing a
trailer.
Towing capacity
The permitted towing capacity for trailers with­
out brakes is 1,650 lbs (750 kg).
The permitted towing capacity for trailers with brakes is 2,200 lbs (1,000 kg) .
These values apply to roads with up to 12% in­
cline.
Tongue weight
The maximum permitted tongue weight of the
trailer drawbar on the trailer hitch ball head may
not be exceeded. ..,.
73

Checking and Filling
-Never open the cap on the coolant expan­
sion tank when the engine is warm. The
cooling system is under pressure.
- To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
large cloth when opening.
- Do not remove the engine cover under any circumstances. This increases the risk of
burns.
- If tests need to be performed with the en­
gine running, there is additional danger due
to moving components (such as the ribbed belt, alternator and radiator fan) and from
the high-voltage ignition system.
- Do not under any circumstances give gas in­
advertently (for example, by hand from the
engine compartment) if the vehicle is sta­
tionary but the engine is running and a gear
is engaged. Otherwise, the vehicle will start
to move immediately and this could result
in an accident.
- Pay attention to the following warnings list­
ed when work on the fuel system or on the
electrical equipment is required.
- Do not smoke .
- Never work near open flames.
- Always have a working fire extinguisher
nearby.
- 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
authorized Audi dealer or authorized Audi
Service Facility.
- To reduce the risk of electric shock and in­
jury, never touch the following components when the engine is running or is being start­
ed:
- Ignition cable
- Other components in the electronic high-
voltage ignition system
- If you must check or perform work on the
engine while it is running:
- Set the parking brake and place the selec­
tor lever in the P (park) position first .
- Always proceed with extreme caution so
that clothing, jewelry or long hair do not
156
become caught in the radiator fan, fan
belt or other moving components or do
not come into contact with hot compo­
nents. Tie back long hair before beginning
work and do not wear clothing that can
hang down into the engine .
- Limit your exposure to exhaust and chemi­ cals to as short a time as possible
¢ &, .
A WARNING
California Proposition 65 Warning:
- Engi ne exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and
reproductive harm . In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other reproductive harm .
- 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
When filling fluids, be sure not to mix the flu­
ids up. Otherwise severe malfunctions and en­
gine damage will occur .
@ For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If there are visible spots from oil or other fluids,
bring your vehicle to an authorized Audi deal­
er or authorized Audi Service Facility to be
checked.

Check ing and F illing
Cooling system
Coolant
The engine coo ling system is filled with a mixture
of pur ified wate r and coolan t addit ive at the fa c­
t ory . T his coo la nt must not be not changed .
The coolant leve l is monito red throug h the . in­
d icator light
¢ page 12. Howeve r, we do recom­
mend occasionally chec king the coo la nt level
manually.
If you must add coolant, use a m ixt ure of wa ter
a nd coo lant add it ive. Mixing the coolant additive
with d istilled water is recommended.
Coolant additive
The coolant additive is made of ant i-freezing and
corros ion protection agents. Only use the fo llow­
ing coolant add it ives. These addit ives may be
m ixed w it h each other.
Coolant additive Specification
G13
TL 774 J
G12++ TL 774 G
The amount of coo lant add itive that needs to be
mixed wit h water depends on the climate where
the vehicle will be operated . If the coolant addi ­
tive percentage is too low, the coolant can free ze
and damage the engine.
Coolant Freeze protec-
additive tion
Warm min . 40% m in. -13 °F
reg ions max . 45% (
- 25 °C)
Co ld min. 50% max. -40 °F
reg ions max. 55% (-40 °C)
CJ) Note
- Befo re the start of winter, have an author­
i zed Audi dealer or authorized A udi Service
Fac ility check if the coolant additive in yo ur
vehicle matc hes the percentage approp riate
for the climate . Th is is especially important
whe n driving in co lde r clima tes.
- If the approp riate coolant additive is not
available in an emergency, do no t add any
other addi tive . You cou ld damage the en-
162
gine . If this h appens, on ly use wa ter and re ­
store the correct m ixt ure ratio with t he
specified coo lant ad ditive as soon as poss i­
ble.
- Only refill w ith new coolant .
- Radiator sealant mus t not be mixed wi th
the coolant .
Adding coolant
Fig. 140 En gine co mpar tm ent: coo la nt expans io n ta nk
cove r
Observe the safety precautions¢ page 155,
Working in the engine compartment .
Checking the eng ine c oolant level
.,. Park the vehicle on a level surface .
.,. Sw itch the ignit ion off.
-"' -"' •
"" co a,
.,. Read the coolant level on the coolant expansion
tank ¢
page 158 , fig. 137. T he coolant leve l
must be betwee n the markings when the en­
gi ne i n cold . When t he e ng ine is warm it can be
slightly above the uppe r mar king .
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion ta nk
¢ (D .
.,. Let the engine coo l down.
.,. Place a clot h over the coolant expansion tan k
cap and unscrew the cap counterclockw ise
¢ .&._ .
.,. Add coo lant m ixed in the cor rect rat io
c;, page 162 up to t he up per ma rk ing .
.,. Make sure that the fluid level remains stab le.
Add mo re coolan t if necess ary.
.,. Close the cap sec urely .
Coo lant loss usually ind icates there is a lea k. Im-
med iate ly dr ive you r ve hicl e to a n author ized .,.

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Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheating
and being pushed out of the cooling system.
A WARNING
- The cooling system is under pressure . Do
not open the coolant expansion tank cap
when the engine is hot . This increases the
risk of burns .
- The coolant additive and the coolant can be
dangerous to your health. For this reason,
keep the coolant in the original container
and away from children. There is a risk of
poisoning.
- 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.
CD Note
-
Do not add coolant if the expansion tank is
empty . Air could enter the cooling system and
damage the engine.
If this is the case, do not
continue driving. See an authorized Audi deal­
er or authorized Audi Service Facility for assis­
tance.
Brake fluid
Fig. 141 Eng ine compartment: cap on brake flu id reservoir
Observe the safety precautions ¢ page 155,
Working in the engine compartment .
Checking the brake fluid level
~ Read the brake fluid Level on the brake fluid
reservoir ~
page 158, fig . 13 7. The brake fluid
Checking and Filling
Level must be between the MIN and MAX mark­
ings
~ A .
The brake fluid Level is monitored automatically.
Changing the brake fluid
Have the brake fluid changed regularly by an au­
thorized Audi dealer or authorized Audi Service Facility .
A WARNING
- If the brake fluid level is below the MIN
marking, it can impair the braking effect
and driving safety, which increase the risk of
an accident. Do not continue driving. See an
authorized Audi dealer or authorized A udi
Service Facility for assistance.
- If the brake fluid is old, bubbles may form
in the brake system during heavy braking .
This would impair braking performance and driving safety, which increases the risk of an
accident .
- To ensure the brake system functions cor­
rectly, only use brake fluids that comply
with VW standard 501 14 or
FMVSS-116 DOT 4.
CD Note
- If the brake flu id level is above the MAX
marking, brake fluid may Leak out over the
edge of the reservoir and result in damage
to the vehicle.
- Do not get any brake fluid on the vehicle
paint, because it will corrode the paint.
Battery
General warnings about batteries
Because of the complex power supp ly, all work
on batteries such as disconnecting, replacing,
etc. should
only be performed by an authorized
Audi dealer or authorized Audi Service Facility
¢ .&,.
The term "vehicle battery " refers to the 12 Volt
battery in your vehicle.
163
...

Index
Cleaning the tail lights . . . . . . . . . . . . . . . . . 186
Climate control system Drive se lect. . . . . . . . . . . . . . . . . . . . . . . . . . 8 1
Climate control system (automatic) . . . . . . . 51
AU TO (automatic mode) . . . . . . . . . . . . . . . 54
Changing the tempe rature unit . . . . . . . . . 55
Descr ipt io n . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Key recogn ition . ............. .... .. .. 5 1
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Synchro nizing . . . . . . . . . . . . . . . . . . . . . . . . 54
Climate control system (manual) Descr ipt io n . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2
Closing Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Pano rama glass roof . . . . . . . . . . . . . . . . . . 31
W indows .. .... .................. ... 30
Closing/opening
refer to Unlocking/locking . . . . . . . . . . . . . 24
Cockpit (overview) . . . . . . . . . . . . . . . . . . . . . . 6
Com ing home . . . . . . . . . . . . . . . . . . . . . . . . . 34
Compact spare tire . . . . . . . . . . . . . . . . . . . . 197
Compartments . . . . . . . . . . . . . . . . . . . . . 45, 46
Compass in the mirror . . . . . . . . . . . . . . . . . . 40
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Consumer Info rmat ion ............. 104, 2 12
Consumpt ion (f ue l) . . . . . . . . . . . . . . . . . . . . 19
Cont acti ng NH TSA . . . . . . . . . . . . . . . . . . . . 104
Convenience key Starting the engi ne . . . . . . . . . . . . . . . . . . . 61
S topping the engine . . . . . . . . . . . . . . . . . . 62
Sw itchi ng the ignition on . . . . . . . . . . . . . . 6 1
Unlo cking/lock ing . . . . . . . . . . . . . . . . . . . . 24
Convenience opening/closing . . . . . . . . . . . . 31
Convertible chi ld safety seats . . . . . . . . . . . 141
Conve rt ible locking retractor
Activa ting . . . . . . . . . . . . . . . . . . . . . . . . . . 146
D eactivating . . . . . . . . . . . . . . . . . . . . . . . . 146
Using to secure a child safety seat . . . . . . 146
Cooling mode (automatic climate control sys-
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Cooling mode (manual climate control sys-
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Cooling system Adding coolant . . . . . . . . . . . . . . . . . . . . . . 162
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
218
Coolant level checking . . . . . . . . . . . . . . . . 162
Coo lant temperature . . . . . . . . . . . . . . . . . . . 8
C rossing water . . . . . . . . . . . . . . . . . . . . . 5 7, 66
Cruise control system . . . . . . . . . . . . . . . . . . . 76
Cup ho lders . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
C u rrent consumpt ion . . . . . . . . . . . . . . . . . . . 19
D
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . . 95
Date.... ... .. .. .. .. .. ... . .. .... ... .. .. 9
Dayt ime run ning lights . . . . . . . . . . . . . . . . . 33
Declaration of compliance . . . . . . . . . . . . . . 215
Defros ting (w indows)
Automat ic climate contro l system . . . . . . . 55
Manua l cl imate control system . . . . . . . . . . 52
D EF (instrument clus ter) . . . . . . . . . . . . . . . . . 9
Dete rm ining correct load limit . . . . . . . . . . 180
D igital compass . . . . . . . . . . . . . . . . . . . . . . . 40
D imens ions . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Dimming t he exterior mirro rs . . . . . . . . . . . . 36
D imm ing the rearv iew mi rror . . . . . . . . . . . . 3 6
D isplay
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Doors Child safe ty lo ck . . . . . . . . . . . . . . . . . . . . . . 30
E mergency locking . . . . . . . . . . . . . . . . . . . . 26
Driver informat ion system
D river messages . . . . . . . . . . . . . . . . . . . . . . 19
E ffic iency program . . . . . . . . . . . . . . . . . . . . 20
On-board comp uter . . . . . . . . . . . . . . . . . . . 19
Operat ing using t he m ultif unction steer ing
whee l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Operat ing using windsh ield wiper lever . . . 18
Overv iew . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Se rvice interva l display . . . . . . . . . . . . . . . 165
D rive r se at
refer to Seating posi tion . . . . . . . . . . . . . . . 98
D rive select
refer to Aud i d rive select . . . . . . . . . . . . . . . 80
Driving econom ically . . . . . . . . . . . . . . . . . . . 57
Driving off road . . . . . . . . . . . . . . . . . . . . . . . . 65
Drivi ng safe ly . . . . . . . . . . . . . . . . . . . . . . . . . 97
D riving through water .. ... . .. .... ... 57, 66
D rivi ng time . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . 180
Loosening . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Tightening . . . . . . . . . . . . . . . . . . . . . . . . . 193
Wheel covers, removing . . . . . . . . . . . . . . . . 193
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Glossary of tire and loading terminology . 169
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Tires and vehicle load limits . . . . . . . . . . . 178
When must a safety belt be replaced? . . . . 108
When must the airbag system be inspected? l24
Where are lower anchorages located? . . . . 148
Window regulators . . . . . . . . . . . . . . . . . . . . . 30
Child safety lock . . . . . . . . . . . . . . . . . . . . . . 30
Windows
Cleaning/removing ice . . . . . . . . . . . . . . . .
187
Windshield
C leaning . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38
also refer to W indshield . . . . . . . . . . . . . . . 38
Windshield washer system . . . . . . . . . . 38, 165
Reservoir capacity . . . . . . . . . . . . . . . . . . . 210
Winter operation
Car washes . . . . . . . . . . . . . . . . . . . . . . . . .
185
Cooling system . . . . . . . . . . . . . . . . . . . . . . 162
Defrosting windows (automatic climate con­
trol system) . . . . . . . . . . . . . . . . . . . . . . . . .
55
Defrosting windows (manual climate control
system) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
52
Removing ice from w indows . . . . . . . . . . . 187
Seat heating (automatic climate cont rol sys-
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
55
Snow chains . . . . . . . . . . . . . . . . . . . . . . . . 181
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Windshield washer system . . . . . . . . . . . . 165
Winter ti res . . . . . . . . . . . . . . . . . . . . . . . . . . 181
X
Xenon headlights . . . . . . . . . . . . . . . . . . . . . 201
Index
225