coolant AUDI Q3 2018 User Guide

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Opening/closing the hood
The hood is released from inside the vehicle.
Fig. 135 Driver footwell: release lever
Fig. 136 Rocker switch under the hood
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Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
.. With the driver's door open, pull the lever be­
low the instrument panel in the direction of the
arrow¢fig.135.
Checking and Filling
.. Raise the hood slightly¢,& .
.. Press the rocker switch under the hood upward
¢fig. 136. This releases the catch .
.. Open the hood.
Closing the hood
.. Push the hood down until you override the
force of the strut .
.. Let the hood fall lightly into the latch.
Do not
press it in.
c> ,&.
A WARNING
-
-Never open the hood when there is steam or
coolant escaping from the engine compart­
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
- If the hood is not latched completely, it
could fly up while you are driving and ob­
struct your vision.
- For safety reasons, the hood must always be
closed securely while driving. Because of
this, always check the hood after closing it
to make sure it is latched correctly. The
hood is latched if the front corners cannot
be lifted.
- If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because dr iving when the hood is
not latched increases the risk of an accident .
157

Checking and Filling
Engine compartment overview
The most important check points.
Fig. 137 Typical location of the rese rvoir and the engine o il fil le r open ing
(D Coolant reservoir ( - L) ¢ page 162
@ Oil dipstick ¢ page 160
® Engine oil filler opening ('t:::r.) ¢page 160
© Eng ine oil label* w ith VW standard
evpage 158
® Brake f luid reservoir ((0)) ¢ page 163
® Vehicle battery(+) ¢ page 164, evpage 203
(?) Jump start point( -) w ith hex head screw
ev page 164, ev page 203
@ Washer fluid reservoir (O) ev page 165
® Fuse housing c:::> page 199
The oil dipstick (item @) and the engine oil fi ller
open ing (item @) can be located in different po­
sitions depend ing on the engine version.
_& WARNING
Read and follow all WARN INGS before check­
ing anything i n the engi ne compa rtment¢ &.
in Working in the engine compartment on
page 155 .
158
Engine oil
Engine oil specifications
The engine oil used must conform to exact speci­
fications.
The serv ice interval d isplay in the inst rumen t
cluster of your vehicle will inform you when it is
time for an o il change . We recommend that you
have your oi l changed by a n authorized Audi Se rv­
i ce Advisor.
If you must add oil betwee n oil changes, use an
oi l that matches the Audi oil quality standard
li sted on the sticker. The sticker is located at the
front of the eng ine compartment ¢
page 158,
fig. 137 .
Audi re commend s
~Castrol /fg/j;Sf.g;fg f'r Aud i recomme nds Longlife high performance
eng ine oil from Aud i Genuine Pa rt s
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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.
-"' -"' •
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.,. 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
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Glossary of tire and loading
terminology
Accessory weight
means the combined we ight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power steer­
ing, power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items a re available as factory- in­
stalled equipment (whether in­
stalled or not) .
Aspect ratio
means the ratio of the height to
the width o f the tire in percent .
Numbers of 55 or lower indicate a
low s idewal l for improved steer­
ing response and better overall
handling on dry pavement.
Bead
means the part of the t ire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the rim .
Bead separation
means a breakdown of the bond
between components in the bead .
Wheels
Cord
means the strands forming the
plies in the tire.
Cold tire inflation pressure
means the tir e pressure recom­
mended by the vehicle manufac ­
tu rer for a tire of a designated
size that has not been driven for
more than a couple of m iles (k ilo­
meters) at low speeds in the
three hour period before the t ire
pressure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
cluding the maximum capacity of
f u el, o il, and coolant, a ir cond i­
tioning and additional weight of
optio nal eq uipment .
Extra load tire
means a tire designed to operate
at higher loads and at higher in­
flat ion pressu res than the corre­
sponding standard tire . Extra load
tires may be ident ified as "X L",
"xl", "EXTRA LOAD", or "RF" on
the sidewall. .,.
169

fuel, oil, coolant and other fluids plus maximum load. The maxi­
mum load includes the number of
passengers that the vehicle is in­
tended to carry ("seating capaci­
ty") with an assumed weight of
1 50 lbs. (68 kg) for each passen­
ger at a designated seating posi ­
tion and the total weight of any
luggage in the vehicle. If you tow
a trailer, the weight of the trailer
hitch and the tongue weight of
the loaded trailer must be includ­
ed as part of the vehicle load.
The
Gr oss Axle Weight R ating
("GAWR") is the maximum load
that can be applied at each of the
veh icle's two axles.
The fact that there is an upper limit to your vehicle's Gross Vehi­
cle Weight Rating means that the
total weight of whatever is being
carried in the vehicle (including
the weight of a trai ler hitch and
the tongue weight of the loaded
trailer) is limited. The more pas­
sengers in the vehicle or passen­
gers who are heavier than the
standard weights assumed mean
that less weight can be carried as
~ luggage.
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Wheels
The Gross Vehicle Weight Rating and the Gross Axle Weight Rating
are listed on the safety compli ­
ance sticker label located on the
driver's side B-pillar.
_&. WA RNIN G
Overloading a vehicle can cause
loss of vehicle control, a crash
or other accident, serious per­
sonal injury, and even death.
- Carrying more weight than
your vehicle was designed to carry will prevent the vehicle
from handling properly and increase the risk of the loss of
vehicle control.
-The brakes on a vehicle that
has been overloaded may not
be able to stop the vehicle
within a safe distance.
- Tires on a vehicle that has
been overloaded can fail sud­
denly, including a blowout and
sudden deflation, causing loss
of control and a crash.
- Always make sure that the to­
tal load being transported -
including the weight of a trail­
er hitch and the tongue
weight of a loaded trailer -
does not make the vehicle heavier than the vehicle's
Gross Veh icle Weight Rating .
179

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Engine compartment fuse assignment
The fuse number is stamped into the plastic be­
low or above each fuse.
No. Equipment
1 Transmiss ion supply
2 ESC
3 Horn
4 DC/DC
converter
5 BCM, battery data module
6 BCM (right)
7 Washer fluid pump
8 BCM (left)
9 Seat adjustment lumbar support
10 Glow time
control module, fuel pump,
heated oxygen sensor
11 Steering
column lever, multifunction
steer ing whee l controls
1 2 Cell phone adapter
13 En
gine control module
14 Engine control module
15 Gateway
16 Heated oxygen sensor, fuel pump, eng
ine
components
17 Engine components
18 Fue
l pump control module
19 Sound amplifier, DC/DC converter
20 Clutch pedal sensor, brake light sensor
22 Windshield wipers Radiator fan, engine components, coolant
23 recirculation pump, auxiliary
heater, fuel
pump relay coils
24 Ignition coils
25 Driver's door
control module (central lock-
ing, window regulators)
26 Front passenger's door control module
(centra
l locking, window regulators)
27 Term inal 15 supply
29 Power seat adjustment (driver,
front pas-
senger)
30 ESC
Fu ses an d bulb s
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for
you .
It is becoming increasingly more and more diffi­
cult to replace vehicle light bulbs since in many
cases, other parts of the car must first be re­
moved before you are able to get to the bulb .
T his applies especially to the light bulbs in the
front of your car which you can only reach
through the engine compartment .
Sheet metal and bu lb holders can have sharp
edges that can cause serious cuts, pa rts must be
correctly taken apart and then properly put back
together to help prevent breakage o f parts and
long term damage from water that can enter
housings that have not been properly resealed.
For your safety, we recommend that you have
your authorized Aud i dea ler rep lace any bulbs fo r
you, since your dealer has the proper tools, the
correct bulbs and the expertise.
Gas di schar ge la mps (Xe no n ligh ts):
Due to the high electr ical voltage, have the bulbs
rep laced by a qualified technician. Headlights
with Xenon light are identified by the hig h volt­
age st icker.
LED headlights* require no maintenance . Please
contact your authorized Audi dea ler if a bulb
needs to be replaced.
_&. WARNING
Changing Xenon lamps wi thout the necessary
equipment can cause serious personal injury .
- Bulbs are pressu rized and can explode when
be ing changed. Potent ial ris k of injury!
- On veh icles equipped with gas disc harge
bu lbs (Xenon light) life-threatening injuries
can resu lt from improper handling of the
high-vo ltage portions of such lamps!
- Only your authorized A udi dealer or quali­
f ied workshop sho uld change the bulbs in
gas discharge lamps. There are parts with
sharp edges on the openings and on the
201

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Technical data
Vehicle specifications
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Fig. 169 Vehicl e identifica tion labe l
Vehicle Identification Number (VIN)
The VIN number is located in the following pla­
ces :
- In the Infotainment system: se lect: the
!CARI
func tion button > (Car)* systems control but­
ton
> Servicing & checks > VIN number .
-under the windshield on the driver's side*
- on the vehicle identification label
Vehicle identification label
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The vehicle identification label ¢ fig. 169 is locat ­
ed in the luggage compartment under the cargo
floor cover.
The information of the vehicle identification label
can also be found in your Warranty
& Mainte­
nance booklet.
The sticker contains the following vehicle data :
(D Vehicle Identification Number (VIN)
@ Vehicle type, engine output, transmission
@ Engine and transmission codes
@ Paint and interior codes
Technical data
® Optional equipment numbers
Safety compliance sticker
The safety compliance sticker is your assurance
that your new vehicle complies w ith all applicable
Federal Motor Vehicle Safety Standards which
were in effect at the time the vehicle was manu­
factured. You can find this sticker on the door
jamb on the driver's side. It shows the month and
year of production and the vehicle identification number of your vehicle (perforation) as well as
the Gross Vehicle Weight Rating (GVWR) and the Gross Axle We ight Rating (GAWR) .
High voltage warning label
The high voltage warning label is located in the
engine compartment next to the engine hood re­
lease. The spark ignition system complies with
the Canadian standard ICES-002.
Notes about technical
data
The values may vary based on special equipment
as well as market-specific equipment and meas­
uring methods.
Please note that the specifications listed in the
vehicle documentation a lways take precedence .
© Tips
Missing technical data was not available at
the time of pr int ing .
Weights
Gross Vehicle Weight Rating
The Gross Vehicle Weight Rating (GVWR), and
the Gross Axle Weight Rating (GAWR) for front
and rear are listed on a sticker on the door jamb
on the dr iver's side .
The Gross Vehicle Weight Rating includes the
weight of the bas ic vehicle plus full fuel tank, oil
and coolant, plus maximum load , which includes
passenger weight (150 lbs/68 kg per designated
seating position) and luggage weight¢.&,. . .,.
209

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today's automobiles, have steadily reduced the
scope of maintenance and repairs which can be
carried out by vehicle owners.
Also, safety and
environmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
gine and transmission parts which an owner can perform .
Maintenance, adjustments and repairs usually re­
quire special tools, testing devices and other
equipment available to specially trained work ­
shop personnel in order to assure proper per­
formance, reliability and safety of the vehicle and
its many systems.
Improper maintenance, adjustments and repairs
can impair the operation and reliability of your
vehicle and even void your vehicle warranty .
Therefore, proof of servicing in accordance with
the maintenance schedule may be a condition for upholding a possible warranty claim made within
the warranty period.
Above all , operational safety can be adversely af­
fected, creating unnecessary risks for you and
your passengers.
If in doubt about any servicing, have it done by
your authorized Audi dealer or any other properly equipped and qualified workshop. We strongly urge you to give your authorized Audi dealer the
opportunity to perform all scheduled mainte­ nance and necessary repairs. Your dealer has the
facilities, original parts and trained specialists to keep your vehicle running properly .
Performing limited maintenance yourself
The following pages describe a limited number of
procedures which can be performed on your vehi­
cle with ordinary tools, should the need arise and
trained personnel be unavailable. Before per­
forming any of these procedures, always thor­
oughly read all of the applicable text and careful­ ly follow the instructions given . Always rigorously
observe the
WARNINGS provided .
Before you check anything in the engine com­
partment, always read and heed all WARNINGS
c::> .&. and c::> .&. in Working in the engine compart­
ment on page 155. Consumer Information
A WARNING
-
Serious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs .
- Always be extremely careful when working
on the vehicle. Always follow commonly ac­
cepted safety practices and general com­
mon sense. Never risk personal injury.
- Do not attempt any of the maintenance,
checks or repairs described on the following
pages if you are not fully familiar with these
or other procedures with respect to the ve­
hicle, or are uncertain how to proceed.
- Do not do any work without the proper tools
and equipment. Have the necessary work
done by your authorized Audi dealer or an­
other properly equipped and qualified work­
shop.
- The engine compartment of any motor vehi­ cle is a potentially hazardous area. Never
reach into the area around or touch the radi­
ator fan.
It is temperature controlled and
can switch on suddenly - even when the en­
gine is off and the ignition key has been re­
moved. The radiator fan switches on auto­
matically when the coolant reaches a certain
temperature and will continue to run until
the coolant temperature drops.
- Always remove the ignition key before any­
one gets under the vehicle.
- Always support your vehicle with safety
stands if it is necessary to work underneath
the vehicle . The jack* supplied with the vehi­
cle is not adequate for this purpose and
could collapse causing serious personal in­
jury.
- If you must work underneath the vehicle
with the wheels on the ground, always make
sure the vehicle is on level ground, that the
wheels are always securely blocked and that the engine cannot be started.
- Always make sure the transmission selector
lever (automatic transmission) is in P (Park
position) and the park brake is applied.
213

Consumer Info rmation
@ For the sake of the env ironment
- Changing the engine settings wi ll adversely
affect emission levels. Th is is detrimental to
the environment and increases fuel con­
sumption.
- A lways observe environmental regu lations
when disposing of old engine o il, used brake
fl ui d, d irty engine coolant, spent batteries
or worn out tires.
- Undeployed airbag modules and pretension­
ers mig ht be classified as Perchlorate Mate­
rial -special handl ing may apply, see
www.dtsc .ca.gov/hazardouswaste/perchlo­
r ate. When the vehicle or parts of the re­
straint system including airbag modu les
safety be lts wi th pretensioners are scrap­
ped, all applicab le laws and regulations
must be observed. Your authorized Audi
dealer is familiar with these requirements
and we recommend that you have your deal­ er perform this service for you.
Accessories and technical changes
Additional accessories and parts replacement
Always consult on authorized Audi dealer before
purchasing accessories.
Audi veh icles that are constructed with advanced
materials like Steel/Aluminum (Hybrid construc­
tion), Aluminum (Aud i Space Frame), and/or A lu­
minum/Carbon F iber (Ultra Advanced L ight
We ight Materials) are as un ique as the ir drivers.
Therefore, the availability of certain parts needed
for repair, restoration, or reconstruction will be
rest ricted, or pa rts will be unava ilable, if the ve­
h icle is not repaired at an a uth orized Aud i co lli ­
sion repair facility . This includes but is not limit ­
ed to structura l parts whic h require specia lized
training and equipment to restore their crash­
worthiness back to the orig inal NHTSA and IIHS
performance.
Your vehicle incorporates the latest safety design
features ensuring a high standard of active and passive safety.
214
This sa fety could be compromised by non-ap­
proved changes to the vehicle . For this reason, if
parts have to be rep laced, p lease observe the fol­
l owing points when install ing additional accesso­
ries:
Approved Audi accessories and genuine Audi parts are availab le from authorized Aud i dea lers .
These dea le rs a lso have the necessary facilit ies,
tools and trained specialists to install the parts
and accessories properly .
A WARNING
Using the wrong spare parts or using non-ap­
proved accessories can cause damage to the
vehicle and serious personal injury.
- Use on ly accessories expressly approved by
Aud i and genuine Audi spare parts
- These parts and accessor ies have been spe­
cially designed to be used on your vehicle.
- Never install accessor ies such as telephone
cradles or beverage holders on airbag covers
or w ith in the airbag deployment zones. Do­
ing so will increase the risk of injury if a ir­
bags are triggered in an accident!
- Before you check anything in the eng ine
compartment, always read and heed all
WARNINGS ~page 155.
(D Note
- If items other than genu ine A udi spare
parts, add-on equipment and accessory
items are used or if repair work is not per­
formed according to specified methods, th is
can result in severe damage to your vehi­
cle's eng ine and body (such as corrosion)
and adve rsely affect your veh icle's war ranty.
- If emergency repai rs must be performed
elsew here, have the vehicle exam ined by an
au tho riz e d Aud i dealer as soon as possib le.
- T he manufacture r cannot be held liable fo r
damage wh ich o ccu rs d ue to failure to com­
ply wi th these stipula tions.