2017 AUDI Q7 radiator cap

Check ing and F illing
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
Fo r wo rk in th e engine compa rtmen t, s uch as
c h ec kin g and filli ng flu id s, th ere is a risk of in­
j u ry, sc aldin g, ac cide nts, a nd b urn s. For this
rea son, foll ow all the warning s and gener al
s a fe ty p recaution s pr ov ided in the f ollow ing in·
f o rm ation . Th e en gine c omp artmen t is a dan ­
ger ous are a.
¢ ,&.
_& WARNING
- T urn the engine off.
- Switch the ign ition off .
- Set the parking brake .
- Select the P selector lever pos ition .
- let the engine cool down.
- 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 .
- Keep ch ildren away from the engine com­
partment .
- Never spill flu ids on a hot engine. These flu­
ids (such as the anti -freezing agent con ­
ta ined in the coolant) can ignite .
- Avoid short circu its in the electrical system .
- When working in the engine compartment,
remember that the rad iator fan can sw itch
on even if the ignition is switched off, which
increases the risk of in jury .
- 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, cove r 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 d ue
to moving components (such as the ribbed
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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 immediately 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 work near open flames .
- Always have a working fire extinguisher
nearby
- All work on the battery or elect rical system
in your vehicle can result in injuries, chemi­
cal b urns, acc idents or burns . Because of
this, all work must 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 ition cable
- Other components in the electronic high -
vo ltage ign ition system
- If you must check or perform work on the
engine while it is running:
- Set the parking brake firs t 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 beginn ing
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:

Checking and Filling
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
The engine cooling system is filled with a mixture
of pur ified water and coolant addit ive at the fa c­
tory. This coolant must not be not changed.
The coolant leve l is monitored through the. in­
d icator light~
page 26. Howeve r, we do recom­
mend occasionally check ing the coo lant level
manually.
I f you must add coolant, use a m ixt ure of water
a nd coolant addit ive. M ixing the coolant additive
with d istilled water is recommended .
Coolant additive
The coolant addit ive is made of anti-freez ing and
corros ion protection agents. Only use the fo llow­
ing coolant add it ives. These additives may be
mixed w ith each other.
Coolant additive Specification
G13
TL 774)
G12++ TL
774 G
The amount of coo lant additive that needs to be
mixed with water depends on the climate where
the vehicle will be operated. If the coolant addi­
tive percentage is too low, the coolant can freeze
and damage the eng ine.
Coolant Freeze protec-
additive tion
Warm min .40% m in. -13 °F
reg ions max. 45% (-25 °()
Cold min. 50% max. -40 °F
reg ions max. 55% (-40 °C)
- Befo re the start of winter, have an author­
i zed Audi dealer or authorized A udi Se rvice
Fac ility check if the coolant additive in your
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vehicle matches the per cen tage appropriate
for the climate . This is especially important
when driving in colder climates.
- If the appro priate coo la nt additive is not
availab le in an eme rgency, do not add any
ot her additive. You could damage the en­
gine. If this happens, only use water and re­
store the correct mixture ratio with the
specified coolant add itive as soo n as poss i­
ble.
- Only ref ill w ith new coolant.
- Radiator sealant must not be mixed with
the coolant.
Adding coolant
Fi g. 2 69 Engine compartment: re lease button on coolant
expansion tank
Observe the safety precautions ~.&, in Working
in the engine comportmen t on page 322.
Checking the engine coolant level
.. Park the vehicle on a level sur face .
.,. Switch the ignit io n off.
.,. Read the coolant level on the coolant expansion
tank
~ fig. 269.
.,. Th e coolan t level must be between the MIN and
MAX marki ngs when the engine in co ld. When
the engi ne is warm it can be sligh tly above the
MAX marking .
Adding coolant
Requirement: there must be a residua l amount of
coolan t in the expansion t ank
~CD -
.. Let the engi ne cool down .
.,. Place a clot h
over the coolant expansion tank
cap .

u (0 ...... N r--. N ...... 0
0
:E .. Push the release button ¢ fig. 269 and careful­
ly unscrew the cap to the left until you feel re­
sistance ¢,&. .
.. Push the release button again and remove the
cap completely .
.. Add coolant mixed in the correct ratio
¢page 328 up to the MAX marking .
.. Make sure that the fluid level remains stable .
Add more coolant if necessary .
.,. Turn the cap to the right to secure it until yo u
feel resistance a second time.
Coolant loss usually indicates there is a leak . Im­
mediately drive your vehicle to an authorized
Audi dealer or authorized Aud i 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 eng ine 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 ign ition is switched off, which
increases the risk of injury.
CD 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 continue driv­
ing . See an authorized Audi dealer or author­
ized Audi Service Facility for assistance.
Checking and Filling
Brake fluid
Fig. 270 Engine compartment: cap on brake fluid reservo ir
Observe the safety precautions¢ A in Working
in the engine compartment on page 322 .
Checking the brake fluid level
.. Read the brake fluid level on the brake fluid
reservoir ¢
page 324, fig . 267. The brake fluid
level must be between the MIN and MAX mark­
ings ¢,& .
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 flu id level is below the MIN
marking, it can impair the braking effect
and driving safety, wh ich increase the risk of
an accident. Do not continue dr iving. See an
authorized Audi dealer or authorized Audi
Serv ice Facility for assistance.
- If the brake fluid is old, bubbles may form
in the brake system dur ing 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 comp ly
with VW standard 501 14 or FMVSS-116 DOT 4.
CD Note
-If the brake flu id l eve l is above the MAX
marking, brake fluid may leak out over the
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u (0 ...... N r--. N ...... 0
0
:E Charging the vehicle battery
Fig. 271 Engine compartment : connec tor s for a charg er
and jump s ta rt cables
Requirement : only use chargers with a maximum
charging voltage of 30 amps/14.8 Volts.
The
vehicle battery cables remain connected .
.,. Read the warn ings ¢
& in General warnings
about batteries on page 330
and ¢ ,& .
.,. Switch off the ignition and all electrical equip­
ment .
.,. Open the hood ¢
page 32 3 .
.,. Open the red cover on the positive terminal
¢ fig . 271 .
.,. Clamp the charger terminal clamps to the jump
start pins
according to the instructions . (pin
under the red cover = "positive", pin with hex­
agonal head= "negative ") .
.,. Insert the power cable for the charging device
into the socket and switch the device on .
.,. At the end of the charging process, sw itch the
charger off and pull the power cable out of the
socket .
.,. Remove the charger terminal clamps.
.,. Close the red cover on the pos itive terminal.
.,. Close the hood ¢
page 323.
A WARNING
-A highly explosive mixture of gases can form
when charging batteries. Only charge the
vehicle battery in well-vent ilated areas.
-A drained vehicle battery can freeze at tem­
peratures around 32 QF (0 QC). A frozen or
thawed vehicle battery must not be charged
and must not be used anymore. The battery
housing can crack and battery acid can leak
out if ice forms, which increases the risk of
an explosion and chemical burns. Contact an
Checking and Filling
authorized Audi dealer or authorized Audi
Service Facility for more information.
- Do not connect or disconnect the charging
cable while charging because this increases
the risk of an explosion.
@ Tips
- Only charge the vehicle battery through the
connections in the engine compartment.
- Read all of the manufacturer's instructions
for the charger before charging the vehicle
battery.
Windshield washer system
Fig. 272 E ngine compar tm ent: was her fluid re serv oir cap
The windshi eld washer fluid reservoir O contains
th e cleaning solution for the windshield and the
he adlight washer system*¢
page 324, fig. 26 7 .
The reservoir capacity can be found in
¢page 379.
To reduce th e risk of lime scal e deposits on the
spray no zzles, use clean water with low amounts
o f calcium. Alway s add window cleane r to the wa­
ter . When the outside temperatures are cold, an
anti -freezing agent should be added to the water
so that it does not freeze.
(D Note
-The concentration of ant i-freezing agent
must be adjusted to the vehicle operating
conditions in the respective climate . A con­
centration that is too high can lead to vehi-
cle damage.
- Never add radiator anti-freeze or other addi-
tives to the washer fluid. .,..
331