2015 AUDI Q3 engine overheat

Instrument s and warnin g/indic ator ligh ts 11
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& WARNING
-Always observe the wa rning in
¢
page 179, before opening the hood
and checking the engine coolant level.
- Never open the engine hood if you see or
hear steam, or if you see engine coolant
dripping from the engine compartment.
You could burn yourself. Let the engine cool off first so that you cannot hear or
see any steam or engine coolant.
(D Note
- Mounting additional lights or accessories
in front of the air inlets reduces the cool­
i ng effect of the rad iator. At h igh outside
temperatures or high eng ine load, the
engine could overheat.
- The front spo iler has been designed to
proper ly distr ib ute the cooling air when
the veh icle is moving.
If the spoiler is
damaged, this cou ld redu ce the cooling
effect and the engine co uld then over­
heat. Ask yo ur autho rized Aud i de aler f or
assistance.
Tachometer (engine rev counter)
The tachometer indicates the engine RPM
(revolutions per minutes).
If engine R PM drops be low 1,500, you should
downshift to the next lower gear. The red area
at the e nd of the sca le ind icates maximum
permissible engine RPM after the break- in pe­
riod. Before reaching this area, move these­
l ector lever to position D/S or ease your foot
off the accelerator peda l.
(D Note
The tachometer needle@¢ page 10,
fig. 3 sho uld only briefly be in the red
zone: you could damage your engine! The
beg inning of the red zone varies depend­
ing on the engine.
@) For the sake of the environment
Upshift ing early saves fue l and reduces en-
~ gine noise. ,....,
Fuel gauge
T he fuel gauge wo rks only when the ignition is
o n.
When the needle reaches the red a rea, the
warning light
Ii] in the instrume nt cluster
will illuminate
¢ page 18. Time to refuel!
The tota l tank capacity of your ve hicle is listed
i n
¢ page 235.
(1) Note
Never run the ta nk completely dry! An ir­
regular supply of f uel can cause engine
misfiring and fuel could enter into the ex­
haust system . The catalytic converter
could t hen ove rheat and be damaged.
Warning/indicator
Lights
Description
T he ind icator lights in the instrument cluster
blink or tur n on. They indica te funct io ns or
malfu nctions ¢
.&,..
Messages may appea r with some indicato r
lights. A warning signal may sound at the
same time. The indicato r lights and messages
in the disp lay can be replaced by othe r d is­
plays. In the dr iver informa tion system, you
can display the messages aga in
¢ page 21 .
Some indica tors lig hts in the d isplay can turn
on i n severa l colors.
& WARNING ~
- Failure to heed warning ligh ts and other
important vehicle information may res ult
in ser ious personal inj ury or vehicle dam­
age.
- Whenever stalled or stoppe d for repair,
move the vehicle a safe d istance off the
road, stop the engine, and turn on the
emergency flasher ¢
page 43.
-The engine compartment o f any motor
ve hicle is a potentially hazardous area.
Before you check anything in the engine

M N
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selector lever position such as D/S and re­
lease the button.
~ Wait briefly until the transmission has shift­
ed (you will feel a slight movement).
~ Remove your foot from the brake pedal and
accelerate.
St opp ing tem porar ily
~ Keep the vehicle stationary using the brak­
ing peda l, for examp le at traffic lights.
~ Do not press the accelerator pedal when do­
ing this.
~ To prevent the veh icle from roll ing when you
start driving, set the parking brake when
stopp ing on steep inclines
c::, ,& .
~ The parking brake will re lease automatically
and the vehicle will s tart moving once you
press the accelerator peda l.
Stopping/p ar king
If the selecto r lever is not in the P position
when you ope n the dr iver's door, the vehicle
could ro ll. The message
Shift to P and turn
off i gniti on, o therwi se vehicle ca n roll aw ay
appears.
~ Press and ho ld the brake pedal unt il the ve-
hicle has come to a complete stop.
~ Apply the parking brake c::, page 71, Parking.
~ Se lect the P selector leve r position c::, ,& .
Stopping on an incline
~ Always press the brake peda l to hold the ve­
hicle i n place and prevent it from " rolling
back "
c::> &_. Do not try to prevent the vehi­
cl e from "roll ing back" when a gea r is en ­
gaged by increasing the engine speed
c::> (D .
Starting on an incline
~ Activate the parking b rake .
~ With the d riving gea r se lected, press the ac­
c e lerator pedal ca refully. The parking brake
will release automat ica lly if yo ur seat belt is
f astened.
Unde r ce rtain circumstances, such as dr iv ing
in the moun tains, it may be useful to swi tch
tempo rari ly to the manua l shift prog ram in o r-
Automa tic tran sm iss ion 83
der to ad just the gears to the driving condi ­
tions by hand
c::, page 84.
On s lopes, activate the parki ng b rake first and
then move the selec to r l ever to the P posi tion.
T his prevents too much stress from being
placed on the locking mechanism .
A WARNING
-The vehicle can also roll when the engine
is stopped.
- Unintended vehicle movement can cause
serio us injury.
- Never leave your vehicle with the engine
ru nning while in gear. If you must leave
your veh icle when the engine is running,
activate the parking brake and move the
selector lever to P.
- Power is still transm itted to the wheels
when the engine is runn ing at idle. To
prevent the vehicle from "creeping", you
must keep your foot on the brake when
the eng ine is ru nning and the se lector
leve r is in D/S o r R or "t ipt ron ic" mode is
selec ted .
-Do not press the accelerator pedal when
changing the se lector lever posi tion
while the veh icle is stationary and the
engine is running .
- Never sh ift into R or P wh ile driving.
- Before driving down a steep slope, re-
duce your speed and shift into a lowe r
gear wi th "tiptronic".
- Do not ride the bra kes o r press the bra ke
pe dal too often or too long when d riving
down a hi ll. Constant braking causes the
brakes to overheat and substantially re­
duces braking performance, increases
brak ing distance or causes complete fa il­
ure of the brake system .
- To prevent the vehicle from ro lling back
when stopp ing o n inclines, always ho ld it
in place with the brake pedal or parking
brake .
- Never hold the vehicle on an incline with
a slipping clutch. The clutch opens auto­ matically when it becomes too hot from

84 Automatic tr an smis sion
the overload. An indicator lamp mJ illu­
minates and a dr iver message appears
Q page 85 when the clutch is overload­
ed .
- If the engine must remain running, never
have any driving pos ition engaged whe n
checking under the hood . Make sure the
selector lever has securely engaged and is locked in P with the parking brake set
c!:> page 179. Othe rwise, any inc rease in
eng ine speed m ay set the vehicle in mo­
t io n, even wi th the park ing brake ap ­
plied.
(D Note
- When stopping on an i ncl ine, do not try
to hol d the veh icle in place by pressing
the accelerator peda l whi le a driving gear
is selected. This can cause the transmis­
s ion to overheat and can damage it. Acti ­
vate the park ing brake or press the brake
pedal to prevent the vehicle from ro lling .
- Allow ing t he vehicle to roll when the en­
gine is stopped and the selector lever is i n N will damage the transmiss ion be­
cause it is not lub ricated under those cir­
cumstances.
{DI Tips
For safety reasons, the park ing brake is re­
leased automatically only when the dr iv­
er 's safety belt is engaged in the buck le.
Hill descent control
The hill descent control system assists the
driver when driving down declines.
Hill descent control is activated when these­
lector lever is in D/S and you press the brake
pedal. The transmission automatically se lects
a gea r that is suitable for the incline . Hill de­
scent control tries to maintai n the speed ach­
i eved at the time of bra king, within physical
an d techn ic al limita tio ns.
If may still be ne c­
ess ary to adjust the speed with the bra kes . Hill descent contro
l sw itches off once the de ­
cline leve ls out or yo u press the acce lerator
peda l.
On vehicles wi th the cru ise contro l system
Q page 73, hill descent control is also activat ­
ed when the speed is set.
A WARNING
--
Hill descent control cannot overcome
physical lim itations, so it may not be ab le
to maintain a co nstant speed under a ll
conditions. A lways be ready to apply the
b rakes .
Manual shift program
Using the manual shift program you can
manually select gears .
Fig. 88 Center co nsole: s hifti ng t he gears ma nually
Fig . 89 Stee ring w hee l: Shi ft padd les•
Gear selection w ith selector lever
T he t iptronic mode can be selected either w ith
the vehicle stat io nary or on the move .
.,. Push the selector lever to the right from 0/
S. An M appears in the instrument cluster
d isp lay as soon as the transm issio n has
shifted .

154 Intellig ent technolog y
Anti-slip r egulation (ASR )
ASR reduces engine power when the drive
wheels begin to spin and adapts the force to
the road conditions. This makes it easier to
start, accelerate and drive up hills.
Electronic diffe rential lock (EDL )
The ED L brakes wheels that are spinn ing and
transfers the drive power to the o ther d rive
wheel or whee ls if the vehicle is equipped with
all-wheel drive* . This function is available up
to about 60 mph (100 km/h).
I n extreme cases , ED L automat ica lly switches
off to help keep the brake on the braked whee l
from overheating . EDL wi ll switch on again au­
tomatically when conditions have returned to normal.
El ectron ic inte ra xle diff ere ntial lock */
se lec tive wheel t orque contr ol*
The electronic interaxle differential lock (front
wheel drive) or the select ive wheel torque
control (all-wheel drive) operates when driv­
ing through curves. The front wheel on the in·
side of the curve or both wheels on the inside
of the curve are braked select ively as needed .
This minimizes s lid ing in the front wheels a nd
allows for more p rec ise driving through
curves. The app licab le system may not acti­
vate when driving in wet or snowy conditions .
A WARNING
-ESC, ABS, ASR, EDL, the electronic inter­
axle differentia l lock* /selective whee l
torque control* and the hill descent as­
sist cannot overcome the laws of physics.
Th is is especially important on slippery
o r wet roads . If the systems begin acting to stabilize your vehicle, you should im­
mediately change your speed to match
the road and traffic conditions. Do not let the increased safety provided by
these systems tempt you to take r isks .
Doing so will increase the risk of a loss of
veh icle cont ro l, collision and ser ious per­
sonal injur ies.
- Always adapt your speed to road, traffic
and weather conditions. The risk of los­
ing control of the vehicle increases when
driving too fast , espec ially through
curves and on slippery or wet roads, and
when driving too close to vehicles up
ahead. ESC, ABS, the brake ass ist sys­
tem, ASR, EDL and the electronic inter­
axle d ifferential lock*/selective wheel
torque control* cannot prevent colli­
sions .
- Always accelerate with special care on
even, smooth surfaces such as those that
are wet or covered with ice and snow .
The drive wheels can spin even w ith
these assistance systems t hat cannot al­
ways he lp to reduce the risk of loss of ve­
hicle control.
(D Tips
- ABS and ASR only wo rk correct ly when
all four wheels are equipped with identi­
cal tires. D ifferent tire sizes can lead to a
reduction in engine power.
- You may hear noises when the systems
described are working .
-If the ind icator light DJ or Ell (USA
mode ls)/ lCO)J there may be a malfunction~
page 16.

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Effect of w ate r and ro ad salt
In certain situa tions, for example after driving
through water, in heavy rain, after overnight
condensation or after washing your car, the braking effect can be reduced by moisture or
ice on the brake rotors and brake pads. The
brakes must be dried first with a few careful
brake applications.
At higher speeds and with the windshield wip ­
ers turned on, the brake pads press against
the brake rotors for a short amount of time.
This occurs at regular intervals w ithout the
driver noticing and provides for better brake response time under wet condit ions.
The effectiveness of the brakes can be reduced
when the vehicle is dr iven o n a salt-covered
road and the brakes are not used . Likewise,
you clean
off accumulated sa lt coating from
brake discs and pads with a few caut ious ap­
p lications of the brake¢.&. -
Cor ro sion
There may be a tendency for dirt to build up
on the b rake pads and corrosion to form on
the discs if the car is not dr iven regular ly or
only for short t rips with little use of the
brakes.
If the brakes are not used frequently, or if cor­ rosion has formed on the discs, it is advisable
to clean
off the pads and discs by b rak ing
fi rm ly a few times from a modera tely high
speed¢ .&..
Faults in the brake system
If you should notice a sudden increase in
brake pedal travel, then one of the two brake
circu its may have failed¢&. -
Low brake fluid le vel
Malfunct ions can occur in the brake system if
the brake fluid level is too low. T he brake fluid
level is monitored electronically .
Brake boo ster
The brake booster increases the pressure that
you generate with the brake pedal. It works
only when the engine is running .¢ .&.
Int ellig ent technolog y 157
Brak e lining we ar status
B rake lining wear may be checked by visual in­
spection o f the condition of the brake pads
thro ugh the openings in the wheel. If neces­
sary, the wheel may be removed for this in­
spection
¢ page 218, Changing a wheel.
A WARNING
-New brake pads don't have the best stop­
ping power and must be "broken-in" dur­
ing the initial 100 to 150 miles (150 to
200 kilometers) of normal c ity dr iving .
You can compensate for this by pressing
the brake pedal more firmly. This also
applies la ter when new pads are instal­
led.
- You should perform braking maneuvers
for the purpose of cleaning the brake
system only if road conditions permit .
Other road users must not be put at risk -
you may cause an accident!
- Before descending a steep grade, reduce
speed and shift transmission into a lower
gea r or lower dr iving range. Do not ride
the brakes or hold the pedal down too
long or too often. This could cause the
brakes to get hot and diminish braking
efficiency.
- Do not "ride the brakes" by rest ing your
foot on the pedal when you do not intend
to brake. This may cause the brakes to overheat, p remature wear and increased
s topping distance.
- Unde r ce rtain cl imati c and ope rat ing
conditions such as passing thro ugh wa­
ter, dr iv ing in heavy rain o r after washing
the vehicle, the effectiveness of the
brakes can be reduced. In winte r, ice can
accumu late on the brake pads, lin ings,
discs and drums. Carefully app ly brakes
for a test. Brakes w ill dry and ice coat­
ings w ill be cleaned
off after a few care­
ful brake applicat ions.
- Driving for an extended period of time on
salt-covered roads without using your brakes can a lso affect braking efficiency.
Clean
off accum ulated salt coating from
•
•

162 Driving and en vironm ent
The cata lytic converter is an efficient "clean­
up" device built into the exhaust system of
the veh icle. The catalytic converter burns
many of the pollutants in the exhaust gas be­
fore they are released into the atmosphere.
The exclusive use of unleaded fuel is critically
important for the life of the catalytic convert­
er and proper functioning of the engine.
A WARNING
-The temperature of the exhaust system
is high, both when driv ing and after stop­
ping the engine.
- Never touch the exhaust tail p ipes once
they have become hot. This could result
in burns .
- Do not park or operate the veh icle in
areas where the hot exhaust system may
come in contact with dry grass, brush,
fuel spill or other material which can
c ause a fi re.
- Do not apply additional undercoating or
rustproofing on o r near the exhaust
man ifold, exhaus t pipes, catalytic con­
verte r o r heat shie lds. D uring driving, the
substance used for undercoating cou ld
overheat and cause a fire.
(D Note
- Be aware th at just one tank fi lling with
leaded fue l will already seriously de ­
grade the performance of the catalytic
conve rter .
- Do not exceed the correc t engine oil leve l
~page 184.
-Do not drive un til the fue l tank becomes
completely empty . The engine could mis­
fire. Unburned f uel could a lso get into
the exhaust system and this could cause
the catalyt ic converter to overheat.
- Do not turn off the ignit ion while the ve­
hicle is moving.
- Do not continue to operate yo ur vehicle
u nder these conditions , as otherw ise fuel
can reac h the catalytic converter. This
could result in overheat ing of the con­
verter, requ iring its replacement. -
To assu re efficient operation of the Emis ­
sion Control System :
- Have your vehicle maintained properly and in accordance w ith the service rec­
ommendat ions in your Warranty &
M ain tenance book let.
- L ack of prope r maintenance as we ll as
i mproper use of t he vehicle wi ll impair
the function of the em ission cont ro l
sys tem an d could lea d to damage.
~ For the sake of the environment
Eve n when the Emiss io n Control System is
ope rat ing proper ly, the exha ust gas c an
have a sul fur- like ex haust gas smell under
some ope rat ing states . This depends on
the sulfur content of the fuel being used. Using a different brand of fue l may help,
or f illing the tank with lead-free super
grade gasoline.
Shutting down vehicle
If you would like your vehicle to remain inop­
erative for a longer per iod of time, contact an
Audi or other specialized dealer. They can ad­
vise you on necessary precautions e .g . corro­
s ion p revention, maintenance and sto rage .
Pay attent ion to additional info rmat io n con­
ce rn in g the battery. Refe r to~
page 190.
Operate your vehicle
economically and
minimize pollution
Gene ral
Your personal style of driving will determine
the economy of your vehicle, as well as ex­
haust and noise levels .
Fuel economy, e nvir onme nta l impact, and
we ar on your eng ine, b rakes and tires la rgely
depend on three fac to rs:
- your personal driving style
- operati ng conditions
- technical limitations

168 Trailer towing
• Do not drive at the maximum permissible
speed.
• Always apply brakes early.
• Monitor the temperature gauge.
Weight distribution
Towing a loaded trailer with an empty car re­
sults in a highly unstable distribution of
weight. If this cannot be avoided, drive at very low speeds only to avoid the risk of losing
steering control.
A "balanced" rig is easier to operate and con­
trol. This means that the tow vehicle should
be loaded to the extent possible and permissi­
ble, while keeping the trailer as light as possi­
ble under the circumstances. Whenever possi­
ble, transfer some cargo to the luggage com­
partment of the tow vehicle while observing
tongue load requirements and vehicle loading
considerations .
Speed
The higher the speed, the more difficult it be­
comes for the driver to control the rig . Do not
drive at the maximum permissible speed. Re­
duce your speed even more if load, weather or
wind conditions are unfavorable -particularly
when going downhill.
Reduce vehicle speed
immediately if the trail­
er shows the slightest sign of swaying.
Do not
try to stop the swaying by accelerating.
Observe speed limits . In some areas, speeds
for vehicles towing trailers are lower than for
regular vehicles.
Always apply brakes early. When driving
downhill, shift into a lower gear to use the en ­
gine braking effect to slow the vehicle. Use of
the brakes alone can cause them to overheat
and fail.
Coolant temperature
The coolant temperature gauge c:> page 10
must be observed carefully . If the needle
moves close to the upper end of the scale, re­
duce speed immediately and/or turn off the
air conditioner. If the coolant temperature warning light in
the instrument cluster starts flashing., pull
off the road, stop and let the engine
idle for
about two minutes to prevent heat build-up.
A WARNING
Anyone not properly restrained in a mov­
ing vehicle is at a much greater risk in an
accident . Never let anyone ride in your car
who is not properly wearing the restraints
provided by Audi.
Trailer towing tips
Important to know
Your vehicle handles differently when towing
-
a trailer because of the additional weight and
different weight distribution. Safety, perform­
ance and economy will greatly depend on how carefully you load your trailer and operate
your rig.
Before you actually tow your trailer, practice
turning, stopping and backing up in an area
away from traffic. Keep practicing until you
have become completely familiar with the way
your vehicle-trailer combination behaves and
responds.
Backing up is difficult and requires practice.
Backing up with a trailer generally requires
steering action opposite to that when backing
up your vehicle without a trailer.
Maintain a greater distance between your ve­
hicle and the one in front of you. You will need
more room to stop. To compensate for the
trailer, you will need a larger than normal
turning radius.
When passing, remember that you cannot ac­
celerate as fast as you normally would be­
cause of the added load. Make sure you have
enough room to pass. After passing, allow
plenty of room for your trailer before chang­
ing lanes again.
Avoid jerky starts, sharp turns or rapid lane
changes.

186 Checking and filling
Engine cooling system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro ­
tects the engine from freezing in the winter .
The cooling system is sealed and generally re­
qu ires little attention .
The cooling system has been filled at the fac­
tory with a permanent coo lant which does not
need to be changed. The coolant consists of a
mixture of spec ially conditioned water and the
manufacturer's glycol-basedcoolant addi-
tive G13 antifreeze with ant icorros ion addi­
tives (50% for USA models; 60% for Ca nada
models) . This mixture both assures the neces­
sary frost protection and protects metal com­
ponents in the engine's cooling system from
corrosion and scaling.
It a lso raises the boil­
ing point of the coo lant.
Do not reduce the concentration o f the coo l­
ant in the summer by adding plain water .
The
proportion of coolant additive must be at
least 50% but not more than 60%
to main­
tain antifree ze protection and cooling efficien­
cy. If the coolant frost protect ion is too low,
the coolant could freeze and damage the veh i­
cle heating and engine cooling system .
For year-round driving, antifree ze is added at
the factory for temperatures down to:
- -31°F(-35°C)USA
- - 40 °F ( -40 °C) Canada.
I f you must add coo lant, use a mixture of wa­
ter and coolant addit ive. Mixing the coolant
additive with distilled water is recommended.
_& WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARNINGS
~ &. in Working in the engine
compartment on page 179.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
-
your vehicle is sufficient to meet the cli­ mate conditions . This is especia lly impor­
tant if you live in a reg ion where the win­
ter is extreme ly cold. If necessary, in­
crease the proportion of coolant add itive
to 60% .
- When adding coolant additive to your
cooling system, remember:
- We recommend using only coolant ad­
ditive G12++ or G13 for your vehicle.
This coolant additive is available at au­
thorized Audi dealers. Other types of
antifreeze can significantly reduce cor­ rosion protection. The resulting corro­
sion can cause a loss of coolant and se­
rious engine damage .
- Do not add any type of rad iator leak seal­
ant to your vehicle's engine coolant.
Adding radiator repair flu id may adverse­
ly affect the function and performance of
your cooling system and could result in
damage not covered by your New Vehicle
Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance.
Fig. 148 E n gin e compart men t: Cover on the coo la n t
expans io n tank
.,. Before you check anything in the engine
compa rtment,
always read and heed all
WARNINGS ~ ,& in Working in the engine
compartment on page 179.
.,. Park your vehicle on a level surface .
.,. Tur n off the ignition.
.,. Read the engine coolant level from the coo l­
ant expansion tank
c:> fig . 148, c:> page 181,
fig. 145.
With a cold engine, the coolant Iii>-