2018 AUDI A7 radiator

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" N .... 0 00 \,;J ' h). To stop the engine, press and hold the
I START ENGINE STOPI button and also press the
brake pedal.
A WARNING
- Never turn off the engine before the vehicle
has come to a complete stop. The full func­
tion of the brake booster and the power
steering is not guaranteed. You may need to
use more force when braking or steering.
Because you cannot brake and steer as you
usually would, this could lead to accidents
and serious injuries.
- Always take the key with you whenever you
leave your vehicle. Otherwise, the engine
could be started or electrical equipment
such as the power windows could be operat­
ed. This can lead to serious injury.
- For safety reasons, always park the vehicle
with the selector lever in the P position.
Otherwise, there is the risk that the vehicle
could roll unintentionally.
@ Note
If the engine has been under heavy load for
an extended period of time, heat builds up in
the engine compartment after the engine is
switched off and there is a risk of damaging
the engine. For this reason, let the engine run
at idle for approximately two minutes before
shutting it off.
(D Tips
For up to 10 minutes after stopping the en­
gine, the radiator fan may turn on again auto­
matically or it may continue to run (even if
the ignition is switched off) for the following
reasons:
- The coolant temperature is increasing due
to trapped heat.
- If the engine is warm and the engine com­
partment also heats up from strong sun­
light.
- Applies to: vehicles with particulate filter:
The emissions control system is heated
through the regeneration process, even if
the engine has not reached its operating
temperature yet.
Driving
Messages
Turn off ignition before leaving car
This message appears and a warning tone sounds if you open the driver's door when the ignition is
switched on.
Press brake pedal to start engine
This message appears if you do not press the
brake pedal when starting the engine.
fll Is key in the vehicle?
This indicator light turns on and this message ap­
pears if the ignition key was removed from the
vehicle when the engine was running. If the igni­
tion key is no longer in the vehicle, you cannot
switch on the ignition or start the engine once
you stop it. You also cannot lock the vehicle from
the outside.
Shift to P, otherwise vehicle can roll away.
Doors do not lock if lever is not in P.
This message appears for safety reasons if the
transmission is not in the P position when you
switch the ignition off. Move the selector lever to
the P position. Otherwise the vehicle is not pro­
tected from rolling and it cannot be lock ed.
II Key is not recognized. Hold back of key
against marked area. See owner's manual
If the indicator light turns on and this message
appears, there is a
malfunction ~ page 70.
Turn off ignition before leaving car. Battery is
discharging
This message appears if the driver's door is opened while the ignition is switched on. Always
switch off the ignition if you are leaving the vehi­
cle. Also see
~ page 71 .
Shift to P and turn off ignition before leaving
car, otherwise vehicle can roll away
This message appears if the driver's door is
opened while the ignition is switched on and the
selector lever is not in the P position . Move the
selector lever into the P position and switch the
ignition off when you exit the vehicle . Otherwise
the vehicle could roll. Also see
~ page 71 .
69

Parking syste m s
Parking systems
General information
A pplies to: ve hicles w ith pa rk in g system plus/rearview cam­
era/peripheral camera
Depending on your vehicle 's equipment , various
parking aids will help you when parking and ma­
ne uvering.
The
p ark in g sys tem plu s assists you when park­
ing by aud ibly and visua lly indicating objects de­
tected
in front of and behind the veh icle
Q page 109.
The rea rv iew c am era shows the area beh ind the
veh icle in the Infotainment system d isp lay. The
lines in the rearv iew came ra image he lp you to
pa rk or maneuve r
Qpage 110.
The peripher al c am era s assist you with parking
and maneuvering . You are aided by var ious cam­
eras depend ing on the vehicle equipment leve l
Qpage 113. The pa rk ing system pl us functions
are also available
Q page 109 .
& WARNING
-Always look for traffic and check the area
around your vehicle by looking at it direct ly
as well. The parking system cannot replace
the driver's attent ion. The driver is always
respons ible when enter ing or leav ing a park­
ing space and dur ing s imilar maneuvers.
- Please note that some surfaces, such as
clothing, are not detected by the system .
-
-Sensors and cameras have blind spots in
wh ich people and objects cannot be detect­
ed . Be especially caut ious of small children
and animals .
- The sensors can be displaced by impacts or
damage to the radiator gr ille, bumper,
wheel housing and the underbody . The park­
ing system may be impa ired as a result.
Have a n author ized A udi dealer or au thor ­
ized Audi Service Facility check their func ­
tion .
- Make s ure the senso rs ar e not obst ructed by
stickers, deposits or other materia ls. If they
are, the sensor function could be impaired.
For additiona l information on cleaning, see
Q page 228.
108
@ Note
-Some objects are not detected or disp layed
by t he system under certain c ircumstances:
- objects such as barrier cha ins, tra iler draw
ba rs, ve rtical po les o r fences
- objects above the sensors such as wall ex ­
tensions
- objects with certain s urfaces or structures
such as cha in li nk fe nces or powder snow
- If you continue driving closer to a low ob­
ject, it may disappear from the sensor range . Note that you will no lo nger be
wa rned about th is obstacle.
- Keep enough distance from the curb to re­
duce the risk of damage to the rims .
(D Tips
-The system may prov ide a war ning even
though there are no obstacles in the cover­
age area in some situations, such as :
- certain road surfaces or when there is tall
grass
- exte rna l ul trasonic sources such as from
cleaning vehicles
- in heavy rain, snow, o r th ick vehicle ex­
h a u st
- We recommend th at you practice p arki ng in
a traffic -free loca tion or parking lot to be ­
come fami liar with the system . When doing
this, there s hou ld be good light and weath ­
er conditions.
- You can change the vo lume and pitch of the
signa ls as well as the d isp lay
Q page 118.
- Please refer to the instructions for towing a
trai ler located in
Q page 118.
-What appea rs in the infotainment d isplay is
somewhat time -de layed.
- Th e sensors m ust be ke pt clean and free of
snow and ice for the parking aid to operate .

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0 00 <..:l ' On Board Diagnostic
System (OBD)
The On-Board Diagnostic System monitors the
engine and transmission components that influ­
ence emissions.
F ig . 178 Footwell o n le ft s ide of th e vehicle: con nectio n
port fo r th e On -Board Diagnostic System (OBD)
On -Board Diagnostic S ystem
Eng ine data can be read out using a special test
device at the On-Board D iagnost ic System con·
nection port
9 fig. 178.
Ind icat or light
If thE' ¢..ift indicator light blinks or turns on, there
is a malfunction that is causing poor emissions
quality and that could damage the catalytic con­
verter .
Drive s lowly to an authorized Audi dealer or au­
thor ized Audi Service Facility to have the mal­
function corrected .
The indicator light can also turn on if the fuel fill­
er cap is not closed correct ly
9 page 190 .
A WARNING
Incorrect use of the connection port for the
On-Board Diagnostic System can cause mal­
functions, which can then result in acc idents
and ser io us injuries .
- Only allow an author ized Audi dealer or au­
tho rized Aud i Serv ice Facility to read out the
engine data.
-
Chec king and Filling
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
For wo rk in the engine com part ment , such a s
che cking and filling fluids, there i s a ris k of i n­
jur y, sc alding, a cci dent s, and b urn s. For t his
r easo n, foll ow all the w arnings and g en e ral
s afe ty pre ca ution s pro vided in the f ollowing
in ­
formati on. The engine compartm ent i s a dan­
ge rou s area in the vehicle .
9 &..
A WARNING
-Turn the engine off.
- Sw itch the ignition off.
- Set the parking brake.
- Select the P se lector lever position .
- Let the eng ine 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 unt il no steam or coolant is
escaping.
- Keep children away from the eng ine com­
partment .
- Never sp ill fluids on a hot engine. These flu­
ids (such as the freeze protection contained in the coolant) can catch fire.
- Avoid short c ircuits in the electrical system .
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which increases the ris k of personal injury .
- Never open the cap on the coolant expan­
sion tank when the engine is warm . The
coo ling 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 eng ine cover under any
circumstances . This increases the risk of
bu rns .
- If tests need to be performed with the en­
g ine runn ing, there is add it iona l danger due
to mov ing components (such as the ribbed
~
193

Checking and Filling
belt, alternator and radiator fan) and from
the high-voltage ignition system.
- Do not under any circumstances give gas in­
advertently (for example, by hand from the
engine compartment) if the vehicle is sta­
tionary but the engine is running and a gear
is engaged. Otherwise, the vehicle will start
to move immediately and this could result
in an accident.
- Pay attention to the following warnings list­
ed when work on the fuel system or on the
electrical equipment is required.
- Do not smoke.
- Never work near open flames.
- Always have a working fire extinguisher
nearby.
- All work on the battery or electrical system
in your vehicle can result in injuries, chemi­
cal burns, accidents or burns. Because of
this, all work must be performed
only by an
authorized Audi dealer or authorized Audi
Service Facility.
- To reduce the risk of electric shock and in­
jury, never touch the following components when the engine is running or is being start­
ed:
- Ignition cable
- Other components in the electronic high-
voltage ignition system
- If you must check or perform work on the
engine while it is running:
- Set the parking brake and place the selec­ tor lever in the P (park) position first.
- Always proceed with 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.
- Limit your exposure to exhaust and chemi­
cals to as short a time as
possible~ &..
A WARNING
California Proposition 6S Warning:
194
-Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and
reproductive harm . In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
@ Note
When filling fluids, be sure not to mix the flu­
ids up. Otherwise severe malfunctions and en­
gine damage will occur.
@ For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If there are visible spots from oil or other fluids, bring your vehicle to an authorized Audi deal­
er or authorized Audi Service Facility to be
checked.

Checking and Filling
Coolant Freeze protec-
additi ve tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold min. 50% max. -40
°F
regions max. 55% (-40 °C)
([) Note
- Before the start of winter, have an author­
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder 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 water and re­ store the correct mixture ratio with the
spec ified coolant additive as soon as possi­
ble.
- Only refill with new coo lant.
- Radiator sealant must not be mixed w ith
the coo lant .
Adding coolant
F ig. 183 Engine compartment: coolant expans ion tank
cover
Observe the safety precautions~ page 193,
Working in the engine compartment .
Checking the engine coolant level
• Park the vehicle on a leve l surface .
• Switch the ignition off.
• Read the coolan t leve l on the coo la nt expansion
tank
~page 196, fig . 181. The coolant level
must be between the MIN and MAX markings
200
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
coolan t in the expansion tan k
~CD -
• Let the engine cool down .
• Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockw ise
~ & -
... Add coo lant m ixed in the cor rect ratio
~ page 199 up to the MAX marking.
• Make sure that the fluid level remains stab le .
Add more coolant if necessary .
• Close the cap securely.
Coolant loss usually ind icates there is a leak . Im­
mediate ly drive your vehicle to an authorized
Audi dealer or authorized Audi Service Fac ility
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 expansion ta nk cap
when the engine is hot. This increases the
risk o f bur ns.
- The coolan t addi tive and the coolant can be
dangerous to your health. For t his 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.
(D Note
Do not add coolant if the expansion tank is
empty. A ir cou ld 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 Serv ice Facility for assis­
tance.

a co .... N
" N .... 0 00 \.J ' 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 exp losion.
(D 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. 186 Engine compa rtment: washer flu id reservo ir cap
M N
-N ~
"' a,
The windshield washer reservoir O contains the
cleaning solution for the windshie ld and the
headlight washer
system* ¢ page 196, fig . 181.
The reservoir capacity can be found in
¢page 254.
To reduce the risk of lime sca le deposits on the
spray nozzles, use clean water with low amounts
of calc ium . A lways add window cleaner to the wa­
ter. When the outs ide temperatures are cold, an
anti -freezing agent should be added to the water
so that it does not freeze .
@ Note
-The concentration of anti-freezing agent
must be adjusted to the vehicle operating
cond itions in the respective climate. A con­
ce ntration that is too high can lead to vehi­
cle damage.
- Never add radiator anti-freeze or other addi­
tives to the washer fluid.
Checking and Filling
- Do not use a glass cleaner that contains
paint so lvents, because t his could damage
the paint.
Service interval display
The service interval display detects when your ve ­
hicle is due for service .
The service interval display works in two stages:
-Inspection or oil change reminder : afte r a cer -
tain distance driven, a message appears in the
instrument cluster display each time the igni­
tion is switched on or off. The remaining dis­
tance or time is disp layed briefly.
- Inspection or oil change due: if your vehicle
has reached an inspection or oil change interval
or both intervals at the same t ime, the mes­
sage
Inspection due! or Oil change due! or Oil
change and inspection due!
appears briefly af ­
ter switching the ignition on/off .
Checking service intervals
You can check the remaining distance or time un ­
til the next oil change or next inspection in the
Car menu. To do t his, select: the !CAR !function
button
> (Car)* Systems control button > Service
& control > Service intervals .
Resetting the indicator
An authorized Audi dea ler or a uthorized Audi
Service Facility w ill reset the service interval dis­
play after performing service.
If you have ch anged the oi l yourse lf, you must re ­
set the oil change interval.
T o reset the indicator, select : the
I CAR ! function
button
> (Car)* Systems control button > Service
& control > Service intervals . Turn the control
knob downward to
Reset oil change interval and
press the control knob.
@ Note
-Only reset the oi l change indicator if the oi l
was changed.
- Following the service intervals is critical to
maintaining the service life and value of
your vehicle, especially the engine. Even if
203