2018 AUDI A7 engine coolant

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Instruments and indicator ligh ts
Instruments and ind icator lights
Instruments
Instrument cluster overview
The instrument cluster is the central information center for the driver.
F ig. 3 Instrument cl uster overv iew
(D Engine coolant temperature gauge
@ Tachometer .. ............. .. .
- With
OFF status indicator ... . .
- With
READY status ind icator ..
@ Turn signals ............. .... .
@ Disp lay w ith
- Driver information system ... . .
- Indicator lig hts ....... ... .. .
® Speedometer
® Fuel level
@ Tips
9
10
68
68, 70
40
20
10
10
The instrument illumination for the needles
and d ials t urns on when the ignition is turned
on and the lights are turned off. The illumina­
tion fo r the ga uges reduces automat ical ly and
eventu ally turns off as brightness outside in­
creases . This function reminds the drive r to
turn the low beams on at the appropriate
time.
Coolant temperature indicator
ed on. To prevent engine damage, please observe
the following notes about the temperature rang­
es.
Cold ran ge
If only the LEDs at the bottom of the gauge turn
on, the engine has not reached operating tem­
perature yet. Avoid high eng ine speeds, full ac­
celerating and heavy eng ine loads.
Normal range
The engine has reached its operating tempera­
ture once the LEDs up to the center of the gauge
turn on.
If the . indicator light in the instru­
ment cluster d isplay turns on, the coolant tem­
perature is too
high ¢ page 14.
@ Note
-Aux iliary headlights and other accessories in
front of the coo ling-air intake impa ir the
cooling effect of the coolant . This increases
the risk of the engine overheating dur ing
high ou tside temperatures and heavy en­
gine load.
~ The coolant temperature display (D ¢ page 9,
~ fig . 3 only functions when the ignition is switch-
u ' 9

Instruments and indicator lights
_}_ Cooling system
• Turn off engine and check coolant level
The coolant level is too low.
Do not continue driving and switch the engine
off. Check the coolant level
9 page 200.
- If the coolant level is too low, add coolant
9page 200. Only continue driving once the in­
dicator light turns
off.
• Coolant temperature too high! Please let en­
gine run with vehicle stationary
Let the engine run at idle for a few minutes to
cool
off, until the indicator light turns off.
-If the indicator light does not turn off, do not
continue driving the vehicle . See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.
_& WARNING
- Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of
burns. Wait until you no longer see or hear
steam or coolant escaping.
- The engine compartment in any vehicle can
be a dangerous area. Stop the engine and
allow it to cool before working in the engine
compartment. Always follow the informa­
tion found in
9 page 193, Working in the
engine compartment.
@ Note
Do not continue driving if the. indicator
light turns on as this increases the risk of en­
gine damage.
, ft Front safety belt
The. indicator light stays on until the driver's
and front passenger's safety belts are fastened.
Above a certain speed, there will also be a warn­
ing tone.
14
(D Tips
For additional information on safety belts,
see ¢
page 138.
E::::I Alternator/vehicle battery
• Electrical system: malfunction! Battery is
not being charged
There is a malfunction in the alternator or the ve­
hicle electrical system .
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately. Because the ve­
hicle battery is discharging, turn off all unneces­
sary electrical equipment such as the radio. See
an authori zed Audi dealer or authori zed Audi
Service Facility if the battery charge level is too
low .
r•j low battery: Battery will be charged while
driving
The starting ability may be impaired.
If this message turns off after a little while, the
vehicle battery charged enough while driving.
If the message does not turn off, have an author­
ized Audi dealer or authorized Audi Service Facili­
ty repair the malfunction .
~ Engine stop while driving
• Engine stopped: No power steering and
brake support.
There is a malfunction in the engine or in the fuel
supply system.
More force is needed to steer and brake the mov­
ing vehicle when the engine is stopped . If the ve­
hicle is rolling, try to bring it to a stop off to the
side from moving traffic. See an authorized Audi
dealer or authorized Audi Service Facility for as­
sistance.
_& WARNING
If the engine stops while driving, you will
need to use more force to brake the vehicle.
This increases the risk of an accident. There
will still be power steering if the ignition is
-

Warm and cold
Warm and cold
Climate control system
Description
The climate control system warms, cools and re­ moves humidity from the air in the vehicle interi­
or. It is the most effective when the windows and
sunroof* are closed. If there is a bui ld-up of heat
inside the vehicle, ventilation can he lp to speed
up the cooling process.
I n all heating mode functions, except for defrost,
the blower only switches to a higher speed once
the engine coolant has reached a sufficient tem ­
perature.
Pollutant filt er
The po llutant filter removes poll utants such as
dust and pollen from the a ir .
Ke y re cognition
A pp lies to: ve hicles w ith de luxe au toma tic clima te co ntrol
The blower sett ing and air distribution are stored
automatically and ass igned to the remote control
key that you are using.
A pp lies to: ve hicles w ith 4 -zo ne del uxe automatic c limate
co ntrol
The climate control set tings are automatically
stored and assigned to the remote control key
that is in use.
A WARNING
Poor visibility can lead to accidents.
- For safer driving, keep all windows free of
ice, snow and fog .
- Become familiar as quickly as possible with
the correct use and function of the climate contro l system, especially with the defrost­
ing and defogg ing function.
58
- When the temperature is below freezing,
only use the windshield washer system after
the windshield has been warmed by the cli­ mate control system . The washer fluid could
freeze on the w indsh ield and impair v isib il i­
ty .
@ Note
-If you suspect that the climate contro l sys­
tem is damaged, switch the system
off to
prevent further damage and have it checked
by an authorized Aud i dea ler or authorized
Audi Serv ice Facility.
- Repa irs to t he Aud i climate control system
require special techn ical know ledge and
special tools. See an aut ho rized Aud i dea le r
or authorized Aud i Serv ice Fac ility .
@) For the sake of the environment
To save fue l, turn off cooling mode by press­
i ng the
IA/Cl button. This will a lso reduce
emissions.
(D Tips
- T o prevent i nterference with t he heat ing
and cooli ng outpu t and to p revent the win­
dows from fogging over, the a ir intake in
front of the windshie ld must be free of ice,
snow or leaves.
- C ondensation from the coo ling system can
drip and form a pudd le o f water under the
vehicle . This is norma l and does not mean
there is a leak.
- Th e energy management system may tem ­
porarily switc h
off certain functions, such as
the seat heating* or rear window defogger.
These systems are ava ilable again as soon
as the energy supply has been restored.

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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

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" N .... 0 00 \.J ' Engine coolant temperature
Pay att ention specifica lly to the coolan t tempera ­
t ure d isp lay when t here are high outside tempe r­
atures, an d when dr iv ing on long inclines
~ page 9 . Shift to a highe r gear in a timely man ­
ne r.
A WARNING
Constant b raking causes the brakes to ove r­
heat and substant ially reduces b raking per­
formance, increases brak ing distance or caus­
es complete fa ilu re of the brake system.
-
Trailer towing
83

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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

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0 00 <..:l ' Opening/closing the hood
The hood is released from inside the vehicle.
Fig. 17 9 Drive r footwell: release leve r
Fig. 1 80 Rocker sw itc h under the hood
Make sure the w iper arms are not raised up from
the windshield . Otherwise the pa int could be
damaged .
Opening the hood
.. With the driver's door open, pu ll the leve r be­
low the instrument panel in the direct ion of the
arrow ¢ fig. 179 .
Checking and Filling
.. Raise the hood slightly ¢.&_ .
.. Press the rocker switch under the hood upward
¢fig. 180. This releases the catch .
.. Open the hood.
Closing the hood
.. Push the hood down unt il yo u over ride the
force of the strut .
.. Let the hood fall lightly into the latch. Do not
press it in.
¢ .&_ .
A WARNING
-
-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 coolan t is
escaping.
- For safety reasons, the hood m ust always be
closed securely while driv ing . Because of
this, always check t he hood afte r closing i t
t o make sure it is latched correct ly . T he
hood is latched if the front corners cannot
be lifted.
- If you no tice that the hood is not latched
while you are d riving, stop immed iately and
close it, because drivi ng when the hood is
not latched increases the r isk of an accident .
195

Checking and Filling
Engine compartment overview
The most important check points.
Fig. 181 Typical location of the rese rvoir and the engine o il filler open ing
(D Jump start po int(-) with hex head screw
~ page 202, ¢page 247
@ Jump start point(+) under the cover
~page 202, ¢page 247
® Engine oil label* w ith VW standard
¢ page 196
@ Brake fluid reservoir ((0)) ¢ page 201
® Engine oil filler opening(~)¢ page 198
@ Coolant reservoir (- L) ~ page 200
(j) Washer fluid reservoir (0) ¢ page 203
The engine oil fill er opening ® may be located in
a different area depending on the specific engine.
& WARNING
Read and follow all WARNINGS before check­
ing anything in the engine
compartment¢ &
in Working in the engine compartment on
page 193.
196
Engine oil
If the engine oil level is too low
If you need to add engine oil, use an oil that is
listed on the sticker.
The sticker is located at the
front of the eng ine
compartment¢ page 196,
fig . 181 .
If the recommended engine o il is not availab le,
in an emergency you may add a maximum of 1
quart(! liter) of ACEA C3 or API SN eng ine oi l
one time until the next oil change .
For more information on the correct eng ine oil
for your vehicle, contact an authorized Audi deal­
er or authorized Aud i Serv ice Facility . Have the oil
c h anged by an authorized Audi dealer or author­
i zed Service Facility.