2015 AUDI Q5 engine overheat

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areas, into open streams or down sewage
drains.
- Recycle used engine oil by taking it to a used
engine oil collection facility in your area, or
contact a service station.
Cooling system
Coolant
T he 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 .
T he cooling system has been filled at the factory
with a permanent coolant which doe s not need to
be changed . T he cool ant consists of a mixture of
specia lly condit io ned water and the ma nufactur ­
e r's g lycol-basedcoo lant additive G 13 antifreeze
w ith a nticorros ion add itives (50% for USA mod­
e ls; 60% for Canadian models) . Thi s m ixt ure bot h
a ssures the ne cessary frost protection and pro­
tec ts meta l components in the engine 's cooling
system from corrosion and sca ling. It a lso raises
the boiling point of the coolant.
D o not red uce the conce ntra tion o f th e coo lant i n
the summer by add ing p la in wa ter.
The propor­
tion of coolant additive must be at least 50% but not more than 60 %
to maintain antifreeze
protection and cooling efficiency . If the coolant
frost protection is too low, the coolan t could
freeze and damage t he vehicle heat ing and en­
g ine cooling system .
For yea r-round driving, antifree ze is added at the
factory for tempe ratu res down to:
- -31°F ( -35°C) USA
- - 4 0°F ( - 40°C) C anada .
I f yo u mu st add coo lant, use a m ixt ure of wate r
a nd coolant add it ive. Mixing the coolant additive
with d istilled water is recommende d.
_& WARNING
Be fore yo u check any thing i n the engine com ­
par tment, always read and hee d all WAR N-
Checking and Fillin g
IN GS ¢ .& in Working in the engine compart­
ment on page 221.
@ Note
- Be fore winte r sets in , have the coo lant
checke d to see if the coolant additive in you r
vehicle is sufficient to meet the climate con­ diti ons. This is espec ia lly important if you
live in a region where the winter is extreme­
ly cold . If necessary, increase the p ropo rtion
o f coolan t addi tive to 60%.
- Whe n adding coolant additive to your cool­
ing system, remember :
- We recommend using o nly coo lan t add i­
tive G12++ o r G13 fo r yo ur vehicle . This
coolant ad dit ive is available at author ized
A ud i dealers . Othe r types of antifreeze ca n
significantly reduce cor rosion protect ion .
The resulting cor rosion can ca use a loss of
coolant a nd serious e ngine damage .
- Do not add any type of rad iator leak sealant
to your vehicle's engine coolant. Adding ra­ diat or repa ir flu id may adverse ly affect the
function and perfo rmance of your cooling
system and cou ld result i n damage not cov­
ere d by your New Vehicle Lim ited W arra nty .
Checking the engine coolant level
Th e engine coolant level can be checked with a
quick glance.
Fi g. 200 Engin e compar tmen t: cov er on th e coo lant ex pan ­
s io n ta nk
Befo re you ch eck a nyth ing in the eng in e compart­
me nt,
always read and heed all WARNINGS
¢ ,& in Working in the engine compartmen t on
page 221.
~
227

Checking and Filling
"'Park your vehicle on a level surface.
"'Turn off the ignition.
"'Read the engine coolant level from the coolant
expansion tank
c:> fig . 200, <=> page 223,
fig. 197. With a cold engine, the coolant level
should be between the "MIN" and "MAX" mark­
ings . When the engine is warm, the level may
be slightly above the "MAX" marking .
The location of the coolant expansion tank can be
seen in the engine compartment illustration
<=> page 223 .
To obtain an accurate reading, the engine must
be switched off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System
c::> page 29 will
blink until you add coolant and the level has been
restored to normal. Even though there is an elec­
tric coolant level sensor, we still recommend you
check the coolant level from time to time .
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cooling
system should be inspected immediately by your
authorized Audi dealer. It is not enough merely
to add coolant .
In a
sealed system, losses can occur only if the
boiling point of the coolant is exceeded as a re­
sult of overheating.
0 Note
Do not add any type of radiator leak sealant
to your vehicle's engine coolant . Adding radia­
tor repair fluid may adversely affect the func­
tion and performance of your cooling system
and could result in damage not covered by
your New Vehicle Limited Warranty .
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the engine compart­
ment,
always read and heed all WARNINGS
228
c::> A in Working in the engine compartment on
page
221.
Requirement: There must be a residual amount
of coolant in the expansion tank
<=>(i) .
"'Turn off the engine.
"' Let the engine cool down.
"' Place a thick rag over the coolant expansion
tank
c::> page 22 7, fig. 200 and carefully turn
the cap counter-clockwise
c::> .&, .
"'Add coolant mixed in the correct ratio
c::> page 22 7, Coolant up to the MAX marking.
"'Make sure that the fluid level remains stable.
Add more coolant if necessary .
"'Twist the cap on again
tightly.
Replacement engine coolant must conform to ex­
act specifications
c::> page 22 7, Coolant.
We recommend using only coolant additive Gl2+
+, Gl3
or in an emergency Gl2+. Do not use a
different additive. In an emergency use plain wa­
ter until you can get the correct additive and can
restore the correct ratio. This should be done as
soon as possible.
If you have lost a considerable amount of cool­
ant, then you should add cold antifree ze and cold
water only when the engine is cold.
Always use
new engine coolant when refilling.
Do not fill coolant above the "MAX" mark. Excess
coolant will be forced out through the pressure
relief valve in the cap when the engine becomes
hot.
A WARNING
- The cooling system is under pressure and
can get very hot. Reduce the risk of scalding
from hot coolant by following these steps.
- Turn off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering the
cap with a large, thick rag.
- Turn the cap slowly and very carefully in a
counter-clockwise direction while applying
light, downward pressure on the top of
the cap.
ll-

Emerg enc y ass is tance
CJ) Note
Special care is required if you are repairing the
tire on a steep incline.
@ Tips
- Do not operate the compressor for more
than 12 minutes continuously, otherwise it
can overheat . Once the compressor has
cooled, you can continue to use it.
- If sealant has spi lled out, let it dry and then
you can remove it by peeling it away like a
foil.
- Remember to obtain a new bottle of sea lant
from yo ur authorized Aud i dea ler after re­
pairing a tire. After this, the functionality of
the tire repa ir set is restored.
- Obey all laws.
Replacing wheels
Before changing a wheel
Observe the following precautions for your own
and your passenger's safety when changing a
wheel.
.. After you experience a tire fa ilure, pull the car
well away from moving traffic and try to reach
l eve l ground before you stop¢_& .
.. All passengers sho uld
le ave t he car and move
to a safe location (for instance, behind the
guardrail)¢ _&.
.. Engage the
parking br ake to prevent your vehi­
cle from rolling unintentionally¢_& .
.. Move
select or lever to pos itio n P ¢ &_ .
.. If you are tow ing a trailer: unhitch the trailer
from your vehicle .
.. Block the diagonally opposite wheel with the
folding chocks or other objects.
.. Take the
jack * and the in flat abl e s par e tir e*
out of the luggage compartment¢ page 255.
A WARNING
You or your passengers could be injured while
changing a wheel if you do not follow these
safety precautions:
- If you have a flat tire, move a safe distance
off the road. Turn off the engine, t urn the
260
emergency flashers on and use other warn­
ing dev ices to alert other motor ists.
- Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traffic.
- To help prevent the vehicle from moving
suddenly and possibly slipping off the jack*,
always fully set the parking brake and block
the wheel diagonally opposite the wheel be­
ing changed with the folding chocks or oth­
er objects. When one front wheel is lifted
off the ground, placing the Automatic Tra ns­
m iss ion in P (Pa rk) w ill
not prevent the veh i­
cle from moving.
- Before you change a whee l, be sure the
ground is level and firm.
If necessary, use a
sturdy board under the jack *.
- Always store the vehicle tool kit, the jack*
and the replaced tire in the luggage com­
pa rtment
¢ page 140.
Changing a wheel
When you change a wheel, follow the sequence
described below step-by-step and in exactly that
order .
1. Remove the d eco rativ e wheel cover*. For
more details see also¢
page 261, Decora ­
tive wheel covers
or ¢ page 261, Wheels
with wheel bolt caps .
2. Loosen the wheel bolts¢ page 261 .
3. Locate the proper mounting point for the
jack* and align the jack* be low that point
¢ page 262.
4. Lift the car with the jack*¢ page 262 .
5 . Remove the
wheel with th e flat tire and then
install the
inflatable spa re ti re*
¢ page 263.
6. Tig hte n a ll whee l bolts ligh tly .
7 .
Lo we r the vehicle with the jack* .
8 . Use the wheel bolt wrench and
firml y tighten
all wheel bolts ¢
page 261.
9. Replace the decorative wheel co ve r* . ...