2018 AUDI Q7 cooling

Warm and cold
4-zone deluxe automatic climate control
Operation
Applies to: vehicles with 4-zone del uxe automatic climate control
F ig. 77 4 -zone deluxe a utomat ic climate control: coc kpit contro ls
F ig . 78 4-zone del uxe automatic climate control system: rear controls
Press the knobs, b uttons or rocker switches to
turn the functions on or off . When the funct io n is
sw itched on, the LED in the respective button or
knob t urns on. The ro ck er swit ches a re touch­
sensi tive. The d river a nd fron t passenger sett ings
c a n be adjus ted separate ly.
You can adjust the settings for the rea r of the ve­
h icle using the controls in the rear~
fig. 78.
O FF climate control system
You can switch the climate control system on and
off using the OFF button . It also sw itches on
when yo u press anot her button o r a knob . T he
70
OFF button in the rear only switches the A/C sys­
tem on/off in the rear of the vehicle. A irflow
from outs ide is blocked when the cl ima te control
system is switched off.
A/C Cooling mode
Cooling mode is switched on and off by pressing
the A/Con/off . The air is not cooled and humid ity
i s not removed when cooling mode is switched
off . This ca n cause fog o n the w indows . Cooling
mode swi tches off a utoma tica lly whe n the o ut-
s id e temperat ure is be low ze ro .
II>-

~ Cooling mode*
The max imum coo ling mode can be sw itched on
and off using the~ button. The air is not cooled
and h umidity is not removed when cooling mode
is switched off. This can cause fog on the win ­
dows. Cooling mode switches off automatica lly
when the outside temperature is below zero.
When the coo ling mode is sw itched on,~ the
veh icle interior is cooled and dehum id ified as
qu ickly as possib le .
cE:> Recirculation mode
In recircu lation mode, the a ir inside the vehicle is
ci rcu lated and fi ltered. This prevents the unfil­
tered air outside the vehicle from entering the
veh icle inter ior . Switch ing recirculation mode on
when dr iv ing t hrough a tunnel or when s itti ng i n
traffic is recommended
~ ,& .
Using the button, recirculation mode is switched
on and off us ing the
ol;) button . You can also
sw itch the recircu lation mode off by pressi ng the
knob @) or the off us ing th e ~ button.
AUTO Autom atic mode
Automatic mode ma inta ins a constant tempera­
ture ins ide the veh icle . Air temperature, airflow
a n d a ir distribution are controlled automatica lly .
You can switc h automatic mode on or off by
p ressing the knob @.
Temperature
You can adjust the temperature be tween 60° F
( + 16°C) and 84°F (+28°() by tur ning the knob
@ . If outs ide of this range,
LO or HI will appea r
in the cl imate contro l system display. At bot h of
these se tt in gs, the cl imate contro l system runs
con tinuously at ma ximum coo ling o r hea ting
power. There is no temperature regula tion .
86'~ Blower
You can adjust the volume of a ir generated by the
b lowe r to yo ur preference using the rocker
sw itches @. T he blower should always ru n at a
l ow se tt ing to preven t the wi ndows from fogg ing
~ an d to ens ure a continuous exchange of ai r ins ide
...... "' the vehicle . To have the b lowe r reg ulated auto-
" ~ mat ica lly, press the knob @. 0
0
::r ' Warm and c old
Air distribution
Yo u can use the rocker sw itches @to adjus t the
ven ts where the air wi ll flow o ut o f. Press t he
roc ker switches @repeatedly unti l the desired
air distrib ution setting is disp layed in the climate
contro l system contro ls . To have the air distribu ­
t ion regulated automat ically, press the knob @.
J ~ Seat heating /ventilation*
P ressing the JI~ but ton switches the sea t
heating/ventilation on at the highest setting
( lev el 3). The LEDs indicate the temperatur e lev ­
el. To reduce the tempe rature, press the button
again. To swi tch the seat heating/ventilat ion off,
press the b utton repeatedly unti l the L ED turns
off .
@ MAX Defogging
The w indshield and side windows are defrosted
o r cleared of condensat ion as quick ly as poss ible.
The maximum amount of air flows mainly from
the vents below the windsh ield . Recirculation
mode switches off . The temperat ure should be
set at +72°F (+22°C) or highe r. T he tempe rature
i s con trolled automat ica lly.
Defrost is sw itched on and off®
MAX button.
You can also sw itch the f unct io n off by press ing
t h e knob @.
Applies to vehicles with windshield defogger: the
windshield defogger switches on automatically
when ou tside tempera tures are low . If you would
li ke to sw itch the windsh ield defroster on ma n­
u ally, press the ~ button. The L ED in the button
blinks.
[ffi) REAR Rear window defogger
Press the button ~ to switch the rear window de ­
fogger on .
It only operates when the engine is
r un ning . It switc hes off automatically afte r 10 to
2 0 m inutes, depe nding on the ou ts ide tempera­
tu re .
T o keep the rear w indow defogge r o n con tinuous­
ly, press a nd ho ld the
Qul R EAR butto n longe r
t h an th ree seco nds. This is sto red un til the ign i-
t ion is swi tched o ff. ..,.
71

Warm and cold
SYNC Syn chr oniz ation
Use t he rocker sw itc h CD to select the f unct ion.
When synchronization is switched on, the set­
tings for the driver's side are applied to the front
passenger's side and the rear (except for seat
heating/venti lation*). When the settings on the
front passenger's side or in the rear are changed,
the synchron izat ion is automatically switched off
and
4- zone appears in the display .
SET REAR function
Use the rocker switch CD to select the function .
When the function is switched on, you can adjust
all settings for the rear us ing the climate control
system controls in the cockpit . The rear climate
control system controls cannot be operated at
the same time . T his function switches off auto­
mat ica lly after a ce rtain per iod of t ime or after
leav ing the menu.
Vents
You can open or close the center and rear vents in
the cockpit and the vents in the rear center con­
sole and door p illars using the r idged thumb­
wheels. The levers adjust the d irect io n of the a ir­
flow from the vents. The w ide vent is opened and
closed using the~ button ~
page 8, fig. 2@ .
Residual heat
You can activate the residual heat function when
the ignition is switched off by pressing the knob
© (left side). The residual heat from the coolant
is used to heat the ve hicle in ter io r. The res id ual
heat function switches off automatically after
about 15 minutes.
A 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 sw itched off . This
i ncreases the risk of an accident .
- Individuals with reduced sensitivity to pain
or temperature could develop burns when
us ing the seat heating function . To reduce
the risk of injury, these ind iv iduals should
not use seat heat ing.
72
@ Note
To avoid damage to the heating elements in
the seats, do not knee l on the seats or p lace
heavy loads on a small area of the seat.
(D Tips
It is not possib le to operate the rear climate
control system controls when the power chi ld
safety lock is switched on. W ith the SET REAR
funct ion, you can apply all settings to the rear
using the climate control system controls in
the cockp it~
page 38 .
Setup
Applies to: vehicles with 4 -zone de luxe automat ic climate
contro l
The climate control system basic settings are ac­
cessed in the Infotainment system.
.. Select in the Infotainment system : IMENU! but­
ton
> V eh icle > left control button > Air condi­
t ioning
Seat heating /seat ventilation *
You can adjus t the seat heat ing/vent ilat io n ba l­
an ce for t he d river, front passenger and rear pas­
sengers .
Footwell temperature
You can adjust the footwell temperature so that
i t is cooler or wa rme r.
Auto recir culat ion
When switched on, automat ic recirculation con­
trols the recirculation mode automatically . You
must press the®
MAX button if fog forms on
the w indows .
Automat ic au xili ary heater *
The aux iliary heater he lps to warm the vehicle in­
terior more qu ickly.
Steering wheel heating
App lies to: vehicles wit h stee ring w heel heat ing
The steering wheel rim can be heated .
.. Press the button on the multifunction steering
wheel to switch the steering wheel heating on .,..

Trail er to wing
Trailer towing
Driving with a trailer
General information
Your veh icle is primari ly intended for transport­
ing peop le and luggage. Howeve r, if you dr ive
with a tra iler , follow the techn ica l requirements ,
the operation and driving tips, and the lega l reg ­
ulations.
Dr iving w ith a trailer affects the vehicle 's fuel
consumpt ion, performance and wear. It a lso 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 removab le ball
h itch mount and ball h itch. The tra ile r hitc h must
be pe rm it t ed for the vehicle, the tra iler and the
permitted tota l weight of the trailer being
pu lled . Above all, it must be secure ly and safe ly
attached to the vehicle trailer.
Never mo unt a t rai ler hitch on the bumper. The
trai ler hitc h 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 regu larly if the trai ler hitc h is securely
mounted . A lways follow the instructions given by
the trai ler hitch manufacturer .
Trailer brakes
If t he tra ile r has its own bra ke system, then fol­
low the manufacturer specifica tions. Howeve r,
the brake system on the trai ler must never be
connected to the vehicle brake system.
92
Engine cooling system
D riving w ith a tra ile r means a higher load on t he
engine and the cooling sys tem. The coo ling sys­
tem must be designed for additiona l load and
contain enoug h coo lant ~@ .
A WARNING -
- Never mount a "weight -distributing" or
"load-balancing" trailer coupler as the trail­
er hitch. The ve hicle was not des igned for
these types of tra iler h itches. The tra iler
h itch can malfunction and t he tra ile r can
b reak off from the vehicle.
- If t he tra ile r i s equ ipped w ith elect ronic
brakes, these brakes can not be activated by
a facto ry-installed control system, whi ch in­
creases the r isk of an accide nt.
- To red uce the r is k of injury, always remove
the ball hitch mount if no tra ile r is mo unt ­
ed.
@ Note
L onge r incl ines cannot be dr iven without a
su itab le cooli ng system, especially if the out­
s ide temperatu res a re high. ot herwise, this
i nc reases the risk of eng ine da mage.
Operating instructions
Several things must be noted when towing a
trailer.
Towing capacity
The permitted towing capacity must not be ex ­
ceeded under any circumstances~
page 376.
You can dr ive up larger inclines if you are not us­
i ng the maximum towing capacity.
The towing capacities given only apply to e leva ­
tions up to 3,200 ft (1,000 m) above sea level. As
the e levation increases, the engine power de­
creases due to the decreasing air pressures. T his
reduces the hill climb ing ability and towing ca­
pac ity . For every additional 3,200
ft (1,000 m),
t h e maximum permitted tow ing weight must be
r educed by app roximately 10% . T he pe rm itted
tow ing weight is t he comb ined we igh t of the
( loaded) vehicle and the (loaded) trailer .

Cl a:, ...... N
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::r - Engine compartment
Working in the engine compartment
Special care is required if you are working in the engine compartment
F or wo rk in th e en gine co mpartm en t, suc h as
ch eck ing and filli ng flu id s, th ere is a r isk o f in­
jur y, sca lding, ac cident s, a nd b urn s. Fo r this
re aso n, follow all the warning s and gener al
s af ety pr ecau tions pr ovided in the f ollowin g in­
f o rm ation . The engine comp artm en t is a d an­
g ero us ar ea .
¢ ,&. .
A WARNING
- T urn the engine off.
- Swit ch the ign ition off.
- Set the parking brake .
- Select the "P" selector lever posit ion .
- Let the engine cool down.
- Never open the hood when there is steam or coolant escaping from the eng ine compart­
ment, because there is a risk that you could
be burned . Wait until no steam or coolant is
escaping.
- Keep children away from the engine com­
partment .
- Never spill flu ids on a hot engine. These flu­
ids (such as the anti -freezing agent con­
tained in the coolant) can ignite .
- Avoid short circu its in the electrical system .
- When working in the engine compartment,
remember that the radiator fan can sw itch
on even if the ign ition is switched off, which
increases the risk of injury .
- Never open the cap on the coolant expan­
sion tank when the eng ine 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 w ith the en­
gine running, there is additional danger due
to moving components (such as the ribbed
Ch eck ing and F illing
be lt, alternator and radiator fan) and from
the high-voltage ignition system.
- Do not under any circumstances activate the
throttle inadvertently (for example, by hand
from the engine compartment) if the veh i­
cle is stat ionary but the eng ine is running
and a gear is engaged . Otherwise, the veh i­
cle will start to move immed iately and this
could result in an acc ident.
- Pay attent ion to the following warnings
when work on the fue l system is required :
- Do not smoke .
- Never wor k nea r open flames .
- Always have a working fi re extingu isher
nearby.
- All work on the battery or electrical system
in your veh icle can result in inju ries, chemi­
cal burns, acc iden ts or bu rns . Because of
this, all work m ust be performed
onl y by an
authorized Audi dealer or authorized Audi
Service Facility.
- To reduce the risk o f electric shock and in ­
jury, never touch the following components
when the engine is running or is being start­
ed:
- Ign it ion cable
- Other components in the electronic high -
voltage ign ition system
- If you must check or perform work on the
engine wh ile it is running:
- Set the parking brake first and then se lect
the "P" selector lever position .
- Always proceed w ith extreme caution so
that clothing, jewelry or long hair do not
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 .
- lim it your exposure to exhaust and chemi­
cals to as short a time as possible
¢ ,&. .
A WARNING
California Proposition 65 Warning:
319

Check ing and F illing
A ud i rec ommends
f;; Castrot //g{g{E{g ?r,w_:;-...7dri,'1AL
Audi rec ommends usi ng the Long Life high ­
perform ance eng ine oil from Aud i Genu ine
Part s.
Checking the engine oil level
The engine oil level can be checked in the Info·
tainment system
Observe the safety precautions¢ A in Working
in the engine compartment on page 319.
~ Park your vehicle on a level surface.
~ Shut the engine off when it is warm.
~ Switch only the ignition back on.
~ Wait approx imately two minutes.
~ Select in the Infota inment system: the I MENU I
button > Ve hicle > left contro l button > Ser vic e
& chec ks > Oil level.
~ Read the oi l level in the display . Add engi ne oil
if th e ba r in the oil leve l ind icator is j ust before
"min" ¢
page 323.
{U) Note
The engine o il leve l must not be unde r the
"min" marking, as this will increase the risk of
engine damage .
(D Tips
The oil level indicato r in the display is on ly an
informationa l display . If the o il level is too
low, a minimum oi l warning appears in the in ·
strument cluster. Add oi l and close the hood.
The current oil leve l is d isplayed in the Info­
tainment system the next time the ignition is
sw itched on.
(D Tips
The engine oil consumption may be up to
0.5 quart/600 m iles (0.5 liter/1,000 km), de­
pending on driving style and operating condi­
tions. Consumpt ion may be h igher during the
first 3,000 miles (5,000 km). Because of this, the engi ne oil level m ust be chec ked regular·
Ly. It is best to c hec k each t ime yo u refuel
your veh icle and before long dr ives.
322
- In order to prov ide e ffective lubrication and
cooling of interna l engine components, a ll
internal comb ustion engines consume acer ­
tain amount of oil. Oil consumption var ies
from engine to eng ine and may change sig­
nificantly over the life of the engine. Typi·
cally, eng ines with a specified break-in per i·
od consume mo re o il during the break-in pe·
r iod than they consume afte r oil cons ump·
t ion has s tabilized.
- Under no rma l co nd it ions, the rate of oil
c ons umption depends on the q ual ity and
vis cos ity of the oil, the RPM (revo lutions per
min ute) a t which the engine is operated, the
ambient temperature and road conditions .
Further factors are the amount of oi l di lu ­
t ion from water condensation or fuel resi­
due and the oxidation level of the oil. As any
eng ine is subject to wear as m ileage bu ilds
up, the oil consumption may increase over
t ime until replacement of worn components
may become necessa ry.
- With all these var iables comi ng into play,
no standard rate of o il consumption can be
established o r spe cified. There is no alter na­
t ive to c hec king the oil leve l reg ularly and
frequently.
- If you have the impress io n your e ng ine co n­
s u mes excessive amou nts of oi l, we recom ­
mend that yo u consult an authorized A udi
dea ler to have the cause of your concern
properly diagnosed . Keep in mind that the
acc urate measurement of o il cons umption
requires great care and may take some
t ime. An authorized Aud i dealer has instruc­
t ions about how to measure o il consump·
t ion accurate ly.
- You can find i nformat ion on engine oil and
eng ine oil capac it ies for the USA at
www.aud iusa.com/he lp/ma intenance, o r
for Canada at www.aud i.ca/ ca/web/en/
c u sterne r-area/ ca re -and-ma i nte na nee/ au di­
serv ice -sched u les. htm l, o r ca ll
800 -822 -2834 .

Check ing and F illing
Detergent additives in the oil will make fresh oi l
look dark after the engine has been running for a
short t ime. Th is is norma l and is not a reason to
change the oil more often than recommended.
Because of the prob lem of p roper disposa l, along
with the special tools and necessary expertise re­
qu ired, we strongly recommend that you have
your oil changed by an authorized
Audi dealer or
a qualified service station .
If you choo se to change your oil your self , please
note the following important information:
A WARNING
To reduce the risk of personal injury if you
must change the engine oil in your veh icle
yourself:
- Wear eye protection.
- To reduce the risk of burns from hot engine
o il, let the eng ine cool down to the touch.
-
- When removing the oi l drain plug with your
fingers, stay as far away as poss ible. A lways
keep your forearm paralle l to the ground to
help prevent hot oi l from running down your
arm.
- Drain the oil into a container des igned for
this purpose, one large enough to hold at least the total amount of oil in your eng ine .
- Engine oil is poisonous. Keep it well out of
the reach of chi ldren .
- Cont inuous contact w ith used engine oil is
harmful to yo ur sk in. A lways protect your
sk in by washing o il off thoroug hly w ith soap
and water.
@ Note
Never mix o il add it ives wit h your engine o il.
These additives ca n damage your eng ine and
adversely affect your Aud i Lim ited New Veh i­
cle Warranty.
@ For the sake of the environment
- Before changing your oil, f irst make sure
you know w here yo u can properly dispose of
the used oil.
- Always dispose of used engine oil properly. Do not dump it on garden soi l, wooded
324
areas, into open streams or down sewage
drains.
- Recycle used engine o il by ta king it to a used
engine oi l collection facility in yo ur a rea, or
contact a service station.
Cooling system
Coolant
The eng ine cooling system is filled w ith a mixtu re
of p urified wate r and coolant additive a t the fac­
tory. This coolan t m ust no t be no t changed.
The coo lant level is mon itored through th e . in­
dicator light
r=;, page 22. However, we do recom­
mend oc cas io nally checking the coolant leve l
manu ally.
If you must add coolant, use a mixture of water
and coolant additive . Mix ing the coo lant add itive
with dist illed wate r is recommended.
Coolant additive
The coolant additive is made of anti-freezing and
corrosion protection agents . Only use the follow­
i ng coolant additives . These add itives may be
mixed wi th each other.
Coolant additive Specification
G12 evo TL 774 L
G12 ++ TL 774 G
G 13
TL 774 J
The amou nt of coolant addit ive that needs to be
mixed with water depends o n the c lima te where
t h e ve hicle w ill be operated. If the coo lant add i­
t ive pe rcen tage is too low, the coolan t ca n freeze
and damage the engine.
Coolant Freeze protec-
additive tion
Wa rm min
. 40% min. -13 °F
regions max
. 45% ( -25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)

a co ...... N r--. N ...... 0
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:E ' (D Note
-Before the start of winter, have an author­
ized Audi dealer or author ized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate . Th is is especially important
when driving in co lder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en­
gine. If this happens, only use wa te r and re­
store the co rrect mixture ratio with the
spec ified coo lan t additive as soon as possi­
ble .
- Only refill with new coo lant.
- Radiator sealant must no t be mixed with
the coo lant.
Adding coolant
Fig . 26 5 Eng ine compartme nt: release button on coolant
expansion tank
Observe the safety precautions ¢ page 319,
Working in the engine compartment .
Checking the engine coolant level
.,. Park the vehicle on a level surface .
.,. Swi tch the ign ition off.
... Read the coolant leve l on the coo lant expansion
tank¢
fig . 265.
... The coolant level must be between the MIN and
MAX markings when the engine in cold. When
the engine is warm it can be slightly above the
MAX marking.
Adding coolant
Requirement: there must be a residual amount of
coo lant in the expans ion tank
¢ (D .
Chec king and Filling
.,. Let the engine cool down.
... Place a cloth over the coolant expansion tank
cap.
... Push the release button
¢fig. 265 and carefu l­
ly unscrew the cap to the left until you feel re­
sistance ¢.&, .
.,. Push the release button aga in and remove the
cap comple tely .
.,. Add coo lant m ixed in the cor rec t rat io
¢page 324 up to t he MAX mar king.
... Ma ke sure that t he f luid level remains stab le .
Add mo re coolant if necessary .
... Tu rn the cap to the right to secure it until you
fee l res istance a second time.
Coola nt loss usually in dicates there is a leak . Im­
mediate ly drive your vehicle to a n authorized
Audi dealer or authorized A udi Service Facility
and have the cooling system inspected.
If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheat ing
and being pushed out of the cooling system .
A WARNING ,.__
-The cooling system is under pressure. Do
not open the coo lant ex pansion tan k cap
when t he engine is hot. This increases the
ris k of burns .
- Th e coolan t addi tive and the coolan t can be
dangerou s to yo ur he alt h . Fo r th is reason,
keep the coolant in the original cont ainer
an d away from children. There is a risk of
poisoning .
- When working in the engine compar tment,
remember that t he radiator fan can switch
on even if the ignition is switched off, which increases the risk of injury .
{U) Note
Do not add coolant if the expansion tank is
empty. There may be air in the cooling sys­
tem, which increases the risk of engine dam ­
age. If this is the case, do not cont inue driv­
i ng. See an authorized A udi dealer or author­
i zed Audi Service Facility for assistance .
-
325