2021 AUDI A8 open hood

4N0012721BF
Opening and closing

Opening and closing
Central locking
General information
Z\ WARNING
— If you leave the vehicle, switch the ignition
off and take the key with you. This applies
particularly when children remain in the ve-
hicle. Otherwise, children could start the ve-
hicle or operate electrical equipment (such
as power windows), which increases the risk
of an accident.

— Applies to vehicles with anti-theft alarm sys-
tem: When the vehicle is locked from the
outside, no one - especially children - should
remain in the vehicle, because the windows
can no longer open from the inside
=> page 44, Anti-theft alarm system.
Locked doors make it more difficult for
emergency workers to enter the vehicle,
which puts lives at risk.
All doors and the luggage compartment lid can
be centrally unlocked and locked at once. You can
select in the MMI if the entire vehicle or only the
driver's door should unlock when unlocking the
vehicle > page 42. The turn signals flash twice
when you unlock the vehicle and flash once when
you lock the vehicle. If they do not flash when
locking, check if all doors and lids are closed.

Depending on the vehicle equipment, you may
have different options for centrally unlocking and
locking your vehicle.
— Vehicle key > page 46
— Sensors in the door handles > page 46
— Lock cylinder in the driver's door > page 44
— Interior central locking switch > page 43
Vehicle key
The term “vehicle key” refers to the remote con-
trol key or convenience key*. The convenience
key* is a remote control key with special func-
tions > page 46 and > page 107.
Power closing*
When closing a door or the luggage compart-
ment lid, you only have to Let it fall lightly into
the latch. It then closes automatically > A.
Automatic locking
If you unlock the vehicle but then do not open
any of the doors, the luggage compartment, or
the hood within a short period time, the vehicle
locks again automatically. This feature prevents
the vehicle from being accidentally left unlocked
for a long period of time.
Automatic locking (Auto Lock)
The Auto Lock function locks all doors and the
luggage compartment lid once the speed has ex-
ceeded approximately 9 mph (15 km/h). The ve-
hicle will unlock again if the unlock function in
the central locking switch is pressed, the “P” gear
is engaged, or the ignition is switched off.
You can open the doors individually from the in-
side by pulling the door handle one time. To open
the rear doors individually, you must pull the
door handle twice.
In the event of a crash with airbag deployment,
the doors will also automatically unlock to allow
access to the vehicle.
Unintentionally locking yourself out
Only lock your vehicle when all of the doors and
the luggage compartment lid are closed and
there is no key in the vehicle. This reduces the
risk of locking yourself out accidentally.
The
following features help to reduce the risk of
locking your vehicle key in the vehicle:
— If the driver's door is open, the vehicle cannot
be locked by pressing the & button on the re-
mote control key or by touching the locking
sensor* on a door.
— If the vehicle key that was used most recently is
inside the luggage compartment, the luggage
compartment lid will automatically open again
after it closes > ©.
— If the vehicle key that was last used is detected
inside the vehicle, then the vehicle cannot be
locked from the outside > ©.
41

Opening and closing

Mechanically unlocking and locking the
doors
If the central locking fails, you must unlock or
lock the doors separately.

[RAz-0026|

5 a S 3
go a


Fig. 30 Door: mechanically locking
Unlocking or locking the driver's door with
the mechanical key
> Remove the mechanical key > page 45.
> Insert the mechanical key into the slot under
the door handle and pry the cap off > fig. 29.
> To unlock the driver's door, turn the mechanical
key to the unlock position in the direction of ar-
row (2) > fig. 29.
> Pull firmly on the door handle to open the driv-
er's door. The door handle swings out slightly
farther than normal.
> To lock the driver's door, select the "P" position
and turn the key once to the close position
@°A.
Locking the front passenger's door and rear
doors using the mechanical key
The mechanical lock is located on the edge of the
doors. It is only visible when the door is open.
> Remove the mechanical key > page 45.
> Remove the cap from the opening > fig. 30.
44
> Insert the mechanical key into the slot on the
inside and turn it all the way to the left (when
locking the right door), or to the right (when
locking the left door).
> Install the cap in the opening and close the
door.
Once the doors are closed, it is no longer possible
to open them from the outside. The front doors
can be opened from the inside by pulling the
door handle one time. The rear doors can be un-
locked from the inside by pulling the door handle
one time and then opened by pulling the door
handle again. If the vehicle is without power, the
doors can be unlocked from the inside by first
pulling the door handle beyond its noticeable re-
sistance. The doors can then can be opened by
pulling the handle again. Then press the door
handle back into its original position, if necessa-
ry. If the child safety lock in one of the rear doors
is activated, you must first pull the door handle
from the inside. Then you can open the door from
the outside.

ZX WARNING

Observe the safety precautions > page 41.
ON Bee ei
Applies to: vehicles with anti-theft alarm system

If the anti-theft alarm system detects a vehicle
break-in, audio and visual warning signals are
triggered. The anti-theft alarm system is switch-
ed on or off when locking or unlocking your vehi-
cle. If the alarm is triggered, it will shut off auto-
matically after a certain amount of time.
Switching the alarm off manually
> To switch the alarm off, press the G button on
the vehicle key or switch the ignition on.
Depending on the vehicle equipment, the anti-
theft alarm system may have the following fea-
tures:
Break-in security feature
The alarm will sound if there is a break-in at the
doors, hood, and/or luggage compartment lid. >

Lights and Vision

G) Tips
— You can also use the wiper blade replace-
ment position for other reasons, for exam-
ple if you want to protect the windshield
from icing by using a cover.
— You cannot activate the wiper blade replace-
ment position when the hood is open.
If the & indicator light turns on, then there is a
windshield wiper malfunction. The message that
is also displayed indicates the cause and possible
solutions. If one of the messages does not turn
off, drive immediately to an authorized Audi deal-
er or authorized Audi Service Facility to have the
malfunction repaired.
gS Automatic wipers: malfunction! See owner's
manual
The light/rain sensor is malfunctioning. You can
still control all functions that are not controlled
by the rain sensor using the windshield wiper lev-
er. Drive immediately to an authorized Audi deal-
er or authorized Audi Service Facility to have the
malfunction repaired.
Digital compass
Switching the compass on and off
Applies to: vehicles with digital compass

BFV-0288


Fig. 53 Rearview mirror: digital compass is switched on
68
> To turn the compass on or off, press the button
@ until the compass display in the mirror turns
on or off.
The digital compass only works when the ignition
is turned on. The directions are indicated with ab-
breviations: N (north), NE (northeast), E (east),
SE (southeast), S (south), SW (southwest), W
(west), NW (northwest).
G) Tips
To prevent inaccurate compass readings, do
not bring any remote controls, electrical devi-
ces or metallic objects near the mirror.

Driver assistance

Safe start monitor
The vehicle can still start to drive even if certain
obstacles are detected when starting to drive
> /\. If the surrounding area detection detects
an obstacle, you will be alerted to the danger by
the aA indicator light.
If you are in the Driver assistance display, the
display @ © fig. 126 and the message Warning!
will also appear. An audio signal will also sound.
Your vehicle will drive more slowly when starting.
This may also occur in some situations when
there is no apparent obstacle.
> Press the brake pedal to slow your vehicle
down.

ZA\ WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras © page 150.
— If the message ready to drive!) appears,
your vehicle will start driving even if there is
an obstacle between your vehicle and the ve-
hicle ahead. To reduce the risk of an acci-
dent, always make sure there are no obsta-
cles between your vehicle and the vehicle
driving ahead.

G) Tips
For safety reasons, adaptive cruise assist is
only active if:
— The driver's safety belt is fastened
— All doors and the hood are closed
— Your vehicle is not stopped for a long period
of time

D_ This is not available in some countries.
174
Driver intervention request
Applies to: vehicles with adaptive cruise assist
Fig. 127 Instrument cluster: request for driver interven-
tion
The request for driver intervention instructs you
to resume manual control of the vehicle if the
adaptive cruise assist braking function is not able
to maintain a sufficient distance to the vehicle
ahead. The system will warn you of the hazard
with the A indicator light and the message Dis-
tance!. An audio signal will also sound.
The display @ only appears when the Driver as-
sistance display is open in the on-board comput-
er > page 16.

ZA\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150.
Adjusting the adaptive cruise assist
Applies to: vehicles with adaptive cruise assist

You can adjust the adaptive cruise assist to your
own preferences. The settings depend on the ve-
hicle equipment.
> Applies to MMI: Select on the home screen: VE-
HICLE > Driver assistance > (<3) > Adaptive
cruise assist.
Possible settings:
Lane guidance - If lane guidance is also active
when adaptive cruise assist control is active, you
can switch it on or off.
Driving program - Depending on the driving pro-
gram and the distance that are set, the vehicle

>

Checking and Filling

cause overheating and damage to the catalytic
converter.
Malfunction Indicator Lamp (MIL)
If the S 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 slowly to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction corrected.
The indicator light can also turn on if the fuel fill-
er cap is not closed correctly > page 271).
Engine compartment
General information
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and filling fluids, there is a risk of in-
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area in the vehicle. > A.
Explanation of warnings (sticker in the engine
compartment):
®

Hot engine components!
Rotating parts!

The catalytic converter can be damaged
"127i if the oil level is too high!

Always follow the instructions in the op-
oA erating manual.



The radiator fan can switch on at any
i, time!

High voltage! Switch off the engine be-
5 fore coming into contact with any igni-
tion system components!



Applies to: vehicles with plug-in hybrid
drive: High voltage! The voltage in the
high-voltage system is high enough to
EN cause fatal injuries. Touching a damaged
high-voltage component can result in a
fatal electric shock.


D_ Depending on the engine and country
274

ZA\ WARNING
— Turn the engine off.
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Allow the engine to cool.
— Keep children away from the engine com-
partment.
— Never spill fluids on a hot engine. These flu-
ids (such as the freeze protection contained
in the coolant) can catch fire.
— Avoid short circuits in the electrical system.
— Never reach into the radiator fan. The fan is
temperature-controlled and can turn on
suddenly, even when the ignition is switched
off.
— 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.
— Plug-in hybrid drive: The coolant expansion
tank cap is equipped with a seal that must
never be removed under any circumstances
= page 277, fig. 181. If the coolant expan-
sion tank for the high-voltage system is not
sealed, please contact an authorized Audi
dealer or authorized Audi Service Facility.
— Plug-in hybrid drive: The sealed cap must
only be opened by an authorized Audi dealer
or authorized Audi Service Facility.
—The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure. There
is a risk of burns
—To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.

Checking and Filling


Opening and closing the hood
The hood is released from inside the vehicle.



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Fig. 180 Unlocked hood: lever
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
> Applies to: vehicles with plug-in hybrid drive:
Switch the ignition off before releasing the
hood so that the gasoline engine does not start
automatically.
> With the door open, pull the lever <> below
the instrument panel in the direction of the ar-
row > fig. 179.


D_ The & symbol is not available in all countries.
276
>» Raise the hood slightly > page 274.
> Press the lever > fig. 180 in the direction of the
arrow. This releases the hooks.
> Open the hood.
Closing the hood
> Push the hood down until you override the
force of the strut.
> Let the hood fall lightly into the latch. Do not
press it in. > /\.
Messages
B Warning! Hood is not locked. Stop vehicle
and check the lock
The hood latch is not locked correctly. Stop im-
mediately and close the hood.

Z\ 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 until no steam or coolant is
escaping.
— For safety reasons, the hood must always be
latched securely while driving. Because of
this, always check the hood after closing it
to make sure it is latched correctly. The hood
is latched if the front corners cannot be lift-
ed.
— If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because driving when the hood is
not latched increases the risk of an accident.

4N0012721BF
Checking and Filling

> Wait approximately two minutes.
» Applies to MMI: Select on the home screen: VE-
HICLE > Settings & Service > Oil level.
> Read the oil level in the display. Add engine oil
if the bar in the oil level indicator is just below
“min” > page 279.
@) Note
If the engine oil level is too low or too high,
there is a risk of engine damage.
@) Tips
The oil level indicator in the display is only an
informational display. If the oil level is too
low, a minimum oil warning appears in the in-
strument cluster. Add oil and close the hood.
The current oil level will be displayed on the
MMI the next time the ignition is switched on.
@) Tips
The engine oil consumption may be up to
0.5 quart/600 miles (0.5 liter/1,000 km), de-
pending on driving style and operating condi-
tions. Consumption may be higher during the
first 3,000 miles (5,000 km). The engine oil
level must be checked regularly. It is best to
check each time you refuel your vehicle and
before long drives.
— Because of the lubrication and cooling of
the engine, combustion engines consume
oil. The oil consumption varies depending
on the engine and may change during the
service life of the engine. Engines generally
consume more oil at the beginning during
the break-in period. Then oil consumption
stabilizes after the break-in period.
— Under normal conditions, oil consumption
depends on the quality and viscosity of the
oil, the engine RPM, the climate conditions,
and the road conditions. The dilution of oil
from condensation or fuel residue as well as
the age of the oil also play a role. Because
engine wear increases with mileage, oil con-
sumption will increase again over time until
it may be necessary to replace worn compo-
nents.
— Because all these variables play a role, it is
not possible to define an oil consumption
standard. Therefore, the oil level must be
checked regularly.
— If you believe that your engine has in-
creased its oil consumption, contact an au-
thorized Audi dealer or authorized Audi
Service Facility to determine the cause.
Please note that an exact oil consumption
measurement must be done with the neces-
sary care and accuracy and may take time.
An authorized Audi dealer or authorized
Audi Service Facility is trained in accurately
measuring the oil consumption.
— You can find information on engine oil and
engine oil capacities for the USA at www.
audiusa.com/help/maintenance, or for Can-
ada at www.audi.ca/ca/web/en/
customer-area/care-and-maintenance/
audi-service-schedules.html, or call
800-822-2834.
Adding engine oil

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Fig. 182 Engine compartment: engine oil filling opening
cover (example)
Observe the safety precautions > page 274, Gen-
eral information.
> Turn the engine off.
> Open the hood > page 276.
>» Unscrew the cap %~ for the engine oil filler
opening > fig. 182.
> Carefully add 0.5 quart (0.5 liter) of the correct
oil > page 277.
> Close the engine oil filler opening cap.
> Close the hood > page 276.
> Restart the ignition after two minutes and read
the current oil level in the MMI > page 278,
Checking the engine oil level.
279

Checking and Filling

@) 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 G12evo coolant additive is not availa-
ble in an emergency, do not add any other
additive. You could damage the engine. If
this happens, only use distilled water and
restore the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— You can continue driving if the permitted
G12evo coolant additive was not added.
However, go to an authorized Audi dealer or
authorized Audi Service Facility immediately
to have the coolant replaced to reduce the
risk of engine damage.
— Due to the risk of engine damage, the cool-
ing system should only be refilled by an au-
thorized Audi dealer or authorized Audi
Service Facility. An authorized Audi dealer or
authorized Audi Service Facility can also pro-
vide you with important information about
the recommended coolant additive.

RAZ-0540

MIN


Fig. 183 Engine compartment - Coolant expansion tank:
@ cover with release button; @) markings
Observe the safety precautions > page 274, Gen-
eral information.
282
Applies to: vehicles with plug-in hybrid drive:
Your vehicle has two coolant expansion tanks
that are separate from each other > page 277,
fig. 181. One expansion tank for the combustion
engine and one tank for the high-voltage system.
The coolant expansion tank for the high-voltage
system is sealed and must not be opened > /\
and> A\.
Checking the coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 276.
> Check the coolant level in the coolant expan-
sion tank > page 277, fig. 181 using the outer
markings (2) > fig. 183. The coolant level must
be between the markings (2) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
> Conventional drive system: When you add cool-
ant to the expansion tank, please refer to
=> page 281, Cooling system.
>» Plug-in hybrid drive: If you add coolant to the
coolant expansion tank for the combustion en-
gine, see > page 281, Cooling system.
» Plug-in hybrid drive: If coolant is missing from
the high-voltage system coolant expansion
tank, do not continue driving. Contact an au-
thorized Audi dealer or authorized Audi Service
Facility immediately > A\.
Adding coolant
Applies to: coolant expansion tank for combustion engine
When adding coolant to the combustion engine
expansion tank, please observe the following in-
structions.
Requirement: there must be a residual amount of
coolant in the expansion tank >@).
If you must add coolant, use a mixture of water
and coolant additive. Audi recommends mixing
the coolant additive with distilled water.
> Allow the engine to cool.
> Place a large, thick towel on the coolant expan-
sion tank cap.
> Push the release button @ > fig. 183 on the
cap and carefully turn it to the left until you
feel resistance > /\.