brake AUDI A8 2020 User Guide

Driving

Accelerator pedal feedback / predictive
messages
Haptic feedback in the accelerator pedal indi-
cates when you should take your foot off the ac-
celerator pedal to drive more efficiently.
Combustion engine startup
Applies to: vehicles with plug-in hybrid drive
A haptic pressure point indicates when the com-
bustion engine will be started. The pressure point
is variable and depends on the high-voltage bat-
tery charge level.
Coasting or recuperation
Power by electric motor
Pressure point
Power by combustion engine
©®OCO Maximum acceleration
Maximum acceleration
If you press the accelerator pedal all the way
down, the motor’s full power will be used and
you will reach maximum acceleration, also called
“kick-down”.
Applies to: vehicles with boost function: The elec-
tric motor can switch on for a brief period if the
accelerator pedal is pressed all the way down in
the “D” and “S” driving program. The availability
of this function depends on the charge level of
the high-voltage battery and the temperature of
the drive system components, among other
things.

ZA WARNING
The driving wheels could spin and the vehicle
could swerve on slick or slippery road surfaces
when using kick-down, which increases the
risk of an accident.

116
Parking lock emergency release
@


B4M-0189
@

Fig. 102 Footwell: releasing the parking lock using the
emergency release
The emergency release is located under the floor
mat on the driver's side. Read and follow the im-
portant instructions about towing > page 324.
Releasing the parking lock using the
emergency release
> To prevent your vehicle from rolling away, set
the parking brake ©) > page 124.
> Pry the cover off at one of the openings using
the screwdriver from the vehicle tool kit
> page 316.
> Insert the socket wrench from the vehicle tool
kit into the opening.
> Turn the socket wrench clockwise () until it
stops and press it downward (2) until it locks in-
to place.
> Leave the socket wrench inserted.
Resetting the parking lock
> Grasp the socket wrench with both hands and
carefully pull it upward to remove.
> Install the cover.

ZA WARNING
— The parking lock must be released using the
emergency release before towing the vehi-
cle.
— The parking lock may only be released using
the emergency release if the parking brake
is set. If it is not working, secure the vehicle
from rolling using the brake pedal or other
suitable means, such as blocking a front and
a rear wheel. An unsecured vehicle may roll
away, which increases the risk of an acci-


dent. >

4N0012721BD
Driving


— Only activate the emergency release while
ona level surface or a slight slope.
—To reduce the risk of an accident, you must
not drive when the emergency release is ac-
tivated.

Messages
i Transmission: malfunction! Safely stop vehi-
cle
Do not continue driving. Stop the vehicle as soon
as possible in a safe location and secure it so it
does not roll. See an authorized Audi dealer or
authorized Audi Service Facility for assistance.
i] Transmission: too hot. Please stop vehicle
Do not continue driving. Select "P" and contact an
authorized Audi dealer or authorized Audi Service
Facility for assistance.
[8] Transmission: too hot. Please adapt driving
style
The transmission temperature has increased sig-
nificantly. Drive very cautiously or take a break
from driving until the temperature returns to the
normal range and the indicator light turns off.
fl Transmission: malfunction! You can contin-
ue driving. See owner's manual
There is a system malfunction in the transmis-
sion. You may continue driving. Drive to an au-
thorized Audi dealer or authorized Audi Service
Facility soon to have the malfunction corrected.
[8] Transmission: malfunction! You can contin-
ue driving with limited function. Please contact
Service
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. This mode only shifts into certain gears or
may no longer shift at all. The engine may stall.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
[8] Transmission: malfunction! You can contin-
ue driving with limited function. No reverse
gear
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. This mode only shifts into certain gears or
may no longer shift at all. The engine may stall.
You cannot engage the reverse gear. Drive to an
authorized Audi dealer or authorized Audi Service
Facility immediately to have the malfunction cor-
rected.
[&] Transmission: malfunction! You can contin-
ue driving in D until engine is off
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. If you turn the engine off, you will not be
able to select any other gears after restarting the
engine. Drive to an authorized Audi dealer or au-
thorized Audi Service Facility immediately to have
the malfunction corrected.
fs Selector lever: malfunction! You can contin-
ue driving. Please contact Service
There is a system malfunction in the selector lev-
er. Drive immediately to an authorized Audi deal-
er or authorized Audi Service Facility to have the
malfunction repaired.
il Selector lever: malfunction! Gear change on-
ly possible if using both shift paddles.
There is a system malfunction in the selector lev-
er. You can continue driving with restricted func-
tion. The selector lever is not working. Gears can
only be selected by tapping both shift paddles at
the same time when the vehicle is stationary. The
“P” gear is automatically engaged when you turn
off the engine. Drive to an authorized Audi dealer
or authorized Audi Service Facility immediately to
have the malfunction corrected.
fs} P button: malfunction! Auto P when engine
off. Please contact Service
There is a malfunction in the "P" button on the
selector lever. The “P” gear is automatically en-
gaged when you turn off the engine. Drive to an
authorized Audi dealer or authorized Audi Service
Facility immediately to have the malfunction cor-
rected.
fs] Danger of rolling away! P not possible.
Please apply parking brake
117

Driving

The parking lock was released using the emer-
gency release > page 116 or can no longer be en-
gaged. Drive to an authorized Audi dealer or au-
thorized Audi Service Facility immediately to have
the malfunction corrected.
Move selector lever to automatic position
The transmission has switched out of tiptronic
mode. Switch back to automatic mode with the
selector lever > page 115.
Drive system
A new vehicle must be broken in within the first
1,000 miles (1,500 km) so that all moving parts
work smoothly together, which helps to increase
the service life of the engine and other drive com-
ponents.
Do not drive higher than two-thirds of the maxi-
mum permitted engine RPM during the first 600
miles (1,000 km) and do not use full accelera-
tion. The engine can be increased RPM gradually
during the next 300 miles (500 km).
Conventional and mild hybrid drive system
Applies to: vehicles with a conventional drive system or a mild
hybrid drive system
Vehicles with a conventional or mild hybrid drive
system are powered by a combustion engine. It
uses fuel to recover energy.
Vehicles with a mild hybrid drive system have ad-
ditional battery technology.
Plug-in hybrid drive
Applies to: vehicles with plug-in hybrid drive
With plug-in hybrid drive, you can select between
the electric and combustion engine drive systems
or combine them > page 119, > page 115.
Coasting
Similar to vehicles with a conventional drive sys-
tem, plug-in hybrid drive vehicles can also disen-
gage the combustion engine to save fuel. The ve-
hicle rolls without an engine braking effect in this
mode, which is like “coasting”. However, the elec-
118
tric portion of the drive system remains engaged
and recuperates if necessary. The coasting func-
tion can be automatically activated in the “D” or
“E” driving program. This occurs automatically
when you take your foot off the accelerator ped-
al.
Applies to: vehicles with plug-in hybrid drive
The vehicle is able to recover energy by using “re-
cuperation”. The electric drive system operates
like a generator and converts a large portion of
kinetic energy into electrical energy that is stored
in the high-voltage battery. The vehicle is braked
during recuperation, which is similar to the en-
gine braking effect on a vehicle with a combus-
tion engine. This will happen automatically when
you press the brake pedal while driving in “D”
gear, or when you remove your foot from the ac-
celerator pedal.
When you press the brake pedal, recuperation is
used to brake the vehicle. The brakes will only be
activated if necessary. When driving normally,
this makes it possible to brake using only recu-
peration just before coming to stop and to lose
little energy and range from braking.
Settings options
You can set if recuperation should be adjusted to
be proactive*, for example, to the road.
> Applies to: MMI: Select on the home screen:
VEHICLE > Charging & Efficiency > Efficiency
assist > Intelligent coasting.

Z\ WARNING
In certain situations, the recuperation may
brake proactively. However, the recuperation
braking effect is limited. Always be ready to
brake to reduce the risk of an accident.
G) Tips
If the ESC is limited or switched off, automat-
ic recuperation is not available and will not
brake.

4N0012721BD
Driving

Saisie laine eN eae (eA
driving

Your driving style greatly influences the amount
of fuel and energy consumed, the environmental
impact, and the wear on the engine, brakes, and
tires. Note the following information for efficient
and environmentally-conscious driving:
— Turn off electrical equipment that is not need-
ed, for example seat heating*.
— Anticipate upcoming traffic situations while
driving to avoid unnecessary acceleration and
braking.
— Avoid driving at high speeds.
— Avoid adding extra weight to the vehicle if pos-
sible, for example by not leaving roof racks or
bike racks installed when they are not needed.
— Make sure the tire pressure is correct.
— Have maintenance performed regularly on the
vehicle.
— Do not drive with winter tires during the summ-
er.
— Do not let the engine run while the vehicle
parked.
— Use the Start/Stop system.
— Utilize the engine braking effect.
— Avoid driving short distances when possible.
G) Tips
The amount of noise produced by the vehicle
can increase significantly when driving with a
sporty style. Show respect to others around
you and the environment with the way you op-
erate your vehicle, especially at night.
Energy management
Your vehicle is equipped with an intelligent ener-
gy management system for distributing electrici-
ty. This significantly improves the starting ability
and increases the vehicle battery life.
@ Tips
— If you drive short distances frequently, the
vehicle battery may not charge enough
while driving. As a result, convenience func-
tions for electrical equipment may be tem-
porarily unavailable.
— The vehicle battery will gradually drain if
the vehicle is not driven for long periods of
time, or if electrical equipment is used
when the engine is not running. To ensure
that the vehicle can still be started, the
electrical equipment will be limited or
switched off.
WE Te [1 y
B Drive system: malfunction! Safely stop vehi-
cle
There is a malfunction in the drive system. The
brake
booster and the power steering may stop
working. Stop the vehicle immediately or as soon
as possible and do not continue driving. Have the
problem corrected by an authorized Audi dealer
or authorized Audi Service Facility.
B Drive system: malfunction! Please contact
Service
There is a malfunction in the drive system. Drive
slowly to an authorized Audi dealer or authorized
Audi Service Facility to have the malfunction cor-
rected.
BS Vehicle sound: malfunction! Pedestrians
cannot hear vehicle. Please contact Service
There is a malfunction in the vehicle sound func-
tion. Drive extremely carefully, since other road
users may not be able to hear your electric vehi-
cle. Drive to an authorized Audi dealer or author-
ized Audi Service Facility immediately to have the
malfunction corrected.
Start/Stop system
Applies to: vehicles with Start/Stop system
The Start/Stop system can help increase fuel
economy and reduce CO2 emissions.
In Start/Stop mode, the engine shuts off auto-
matically when stopped, for example at a traffic
light. The ignition and important assist systems
such as power steering and the brake booster will
remain available during the Stop phase. The en-
gine will restart automatically when needed. >
121

Driving

The Start/Stop system is automatically activated
once
the ignition is switched on.
Switching the Start/Stop system off and on
The & button is located above the selector lever
in the center console. The LED in the button turns
on when the function is switched off.
> Press & to switch on or off.
If you switch the system off during a Stop phase,
the engine will start again automatically.
Basic requirements
—The driver's door and hood must be closed.
—"P","N", or"D" must be engaged.
— The steering wheel must not be turned far in ei-
ther direction.
— The vehicle must have driven faster than 2 mph
(3 km/h) since the last time it stopped.
— The vehicle is not in trailer mode.
® Note
Always switch the Start/Stop system off when
driving through water > page 122.
G) Tips
— Depending on the driving situation, the en-
gine may already stop when coasting before
the vehicle has come to a complete stop )).
— If you select the "D" position after shifting
into reverse, the vehicle must be driven fast-
er than 6 mph (10 km/h) in order for the
Start/Stop system to become active again.
This makes it possible to maneuver without
stopping the engine.
Stopping and starting the engine
Applies to: vehicles with Start/Stop system
> Press and hold the brake pedal until the vehicle
has stopped. The @ indicator light appears in
the instrument cluster once the engine stops
automatically.
> The engine starts again when you remove your
foot from the brake pedal. The indicator light
turns off.

D_ In certain countries.
122
G) Tips
— Press the brake pedal during a Stop phase
to keep the vehicle from rolling.
— The ignition will turn off if you press the
START ENGINE STOP] button during a Stop
phase.
— If you leave the vehicle briefly during a Stop
phase, the driver's door must be closed and
the safety belt buckled for the engine to be
able to restart.


— You can control if the engine will stop or not
by reducing or increasing the amount of
force you use to press the brake pedal. For
example, if you only lightly press on the
brake pedal in stop-and-go traffic or when
turning, the engine will not switch off when
the vehicle is stationary. If you press the
brake pedal harder, the engine will switch
off.
Starting and stopping the engine automat-
ire] AY
Applies to: vehicles with Start/Stop system
The system checks if certain conditions are met
before and during the Stop phase, and deter-
mines if the engine stops and how long it re-
mains stopped. For example, if power usage is
high, the engine will not be stopped. Along with
other conditions, the following factors influence
the automatic engine start or stop:
— Environmental conditions (slopes, inclines, ele-
vation, temperature)
— Battery (charge status, temperature, power us-
age)
— Engine temperature
— Assist systems
— Driving behavior
Depending on the engine, the indicator light
may appear if the engine is not stopped.
Messages
Applies to: vehicles with Start/Stop system
Drive system: please start the vehicle manually >

4N0012721BD
Driving

This message appears when specific conditions
are not met during a Stop phase. The Start/Stop
system will not be able to restart the engine. The
engine must be started with the
START ENGINE STOP] button.


Vehicle starting system: malfunction! Please
contact Service
There is a malfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dealer or
authorized Service Facility as soon as possible to
have the malfunction corrected.
Brakes
General information
You can apply the vehicle's brakes using the brake
pedal.
Operating noise
Noises may occur when braking depending on the
speed, braking force, and outside conditions such
as temperature and humidity.
Braking effect
The response time from the brakes depends on
the weather and environmental conditions. To
ensure the optimal braking effect, the brake sys-
tem is cleaned at regular intervals. This is done
by applying the brake pads to the brake rotors for
a short period of time when driving at high
speeds when the windshield wipers are switched
on.
If the brake system becomes damp, for example
after driving in heavy rain, the braking effect may
be delayed. Other factors that could temporarily
increase the response time of the brakes include:
— Wet conditions
— Low temperatures, ice, and snow
— Roads covered in salt
— Dirty brake pads
Corrosion
Corrosion may form on the brake rotors if there is
no heavy braking, if the vehicle is not driven for
long periods of time, or if the vehicle is not driv-
en
frequently or for long distances. In this case,
braking heavily several times while driving at
high speeds can clean the brake rotors > A\.
Brake pads
New brake pads do not achieve their full braking
effect during the first 250 miles (400 km). They
must be “broken in” first. However, you can com-
pensate for the slightly reduced braking force by
pressing firmly on the brake pedal. Avoid heavy
braking during the break-in period.
Brake pad wear depends largely on the way the
vehicle is driven and on operating conditions.
Brake pad wear increases when driving frequently
in the city or short distances or when using a very
sporty driving style.
Ceramic brakes
Applies to: vehicles with ceramic brakes
Ceramic brakes provide excellent deceleration
rates.
The break-in period for new ceramic brakes may
be significantly longer than for standard brake
rotors. Due to the properties of the material,
they may cause noises at lower speeds. Ceramic
brakes also absorb more moisture in wet condi-
tions. Therefore, there will temporarily be less
braking force than when the brakes are dry. You
can compensate for this by pressing the brake
pedal harder.

ZA\ WARNING
— Only apply the brakes for the purpose of
cleaning the brake system when road and
traffic conditions permit. You must not en-
danger other road users and increase the
risk of an accident.
— Due to the risk of injury, only have an au-
thorized Audi dealer or authorized Audi
Service Facility work on the brake system.
Incorrect repairs could impair the function.
— Never let the vehicle roll while the engine is
stopped because this increases the risk of an
accident.
— During automatic braking maneuvers, the
brake pedal may move downward automati-
cally. To reduce the risk of injury, do not
place your foot under the brake pedal.

123

Driving

@) Note
— Never let the brakes “rub” by pressing the
pedal lightly when braking is not actually
necessary. This can cause the brakes to over-
heat and increases braking distance and
causes wear.
— Observe the important information for driv-
ing downhill > page 126. This especially ap-
plies when towing a trailer.
@ Tips
— If you retrofit your vehicle with a front spoil-
er, wheel covers or similar items, make sure
that the air flow to the brakes is not ob-
structed. Otherwise the brake system can
overheat.
— Also refer to the information about brake
fluid > page 283.
WEEE Tel
GG 7 @ Brakes: malfunction! Safely stop ve-
hicle
There is a malfunction in the brake system. If
fs) and also turn on, there is a malfunc-
tion in the ABS, ESC, and braking distribution.
Do not continue driving. See an authorized Audi
dealer or authorized Audi Service Facility for as-
sistance. Read and follow the other safety pre-
cautions > A.
Gia / © Brake pads: wear limit reached. You
can continue driving. Please contact Service
The brake pads are worn. Drive to an authorized
Audi dealer or authorized Audi Service Facility as
soon as possible to have the malfunction correct-
ed.
Brake booster: limited functionality.You can
continue driving. Please contact Service
There is a brake booster malfunction. The brake
booster is available, but its effectiveness is re-
duced. The braking performance may be different
compared to the usual performance. Drive to an
authorized Audi dealer or authorized Audi Service
Facility immediately to have the malfunction cor-
rected.
124
Brake booster: deactivated. See owner's manual
The brake booster remains active for a brief peri-
od of time after switching off the ignition. Secure
the vehicle from rolling by setting the parking
brake and select the “P” gear.
Other indicator lights
if is displayed when there is a malfunction,
the brakes were under heavy load. Follow the in-
structions in the message to utilize the engine
braking effect and to relieve the brakes.

Z\ WARNING
If a malfunction occurs in the ABS, ESC, and
braking distribution, interventions that stabi-
lize the vehicle will no longer be available.
This could cause the vehicle to swerve, which
increases the risk that the vehicle will slide.
Do not continue driving. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.

Electromechanical
parking brake
Operating the parking brake
The electromechanical parking brake is used to
secure the vehicle from rolling away unintention-
ally.
The @) switch is located under the selector lever
in the center console. It turns on when the park-
ing brake is set. You can release the parking brake
manually or automatically when you start to
drive.
Setting and releasing the parking brake
> Closing: Pull the © switch.
> 1* ©) appears, the parking brake is hold-
ing the vehicle. You can remove your foot from
the brake pedal.
> Releasing: when the ignition is switched on,
press and hold the brake pedal and press the
button.
If the red indicator light flashes, the braking
force has not built up enough or it has decreased.
You can also secure the vehicle by selecting the >

4N0012721BD
Driving

“P” gear or pressing the brake pedal. Make sure
the indicator light is off before you start driving.
Automatically releasing the parking brake
when starting to drive
Requirement: the driver's door must be closed
and the driver’s safety belt must be fastened.
> Press the accelerator pedal to start to drive.

ZA\ WARNING
—To reduce the risk of an accident, always
make sure the vehicle is situated safely
while stationary.
— If the parking brake is set, it can release au-
tomatically when the accelerator pedal is
pressed. To reduce the risk of an accident,
do not inadvertently press the accelerator
pedal and always shift into “P” when the ve-
hicle is stopped.
— If the power supply fails, you cannot set the
parking brake once it is released, or release
it if it is set. In this case, park the vehicle on
level ground and secure it by engaging the
"P” gear. Contact an authorized Audi dealer
or authorized Audi Service Facility for assis-
tance.

@) Tips
— On steep inclines, especially when in trailer
mode, the vehicle may roll backwards unin-
tentionally when starting to drive. To re-
duces the risk of this happening, pull and
hold the ©) switch while pressing the accel-
erator pedal. If enough drive power has
built up at the wheels and the vehicle does
not roll backwards, then release the switch
to start to drive.
— If you leave the vehicle when “D” or “R” are
engaged, the parking brake will be set auto-
matically.
— Noises when the parking brake is set and re-
leased are normal and are not a cause for
concern.
— The parking brake goes through a self-test
cycle at regular intervals when the vehicle is
stopped. Any noises associated with this are
normal.
Emergency braking function
Emergency braking should only be used in an
emergency, if the standard brake pedal is mal-
functioning or obstructed. When the emergency
braking function is activated, the braking effect is
similar to a heavy braking maneuver.
> Pull and hold the ©) switch while driving.
> An audio warning signal will sound and emer-
gency
braking will begin.
> If you press the accelerator pedal, emergency
braking will be canceled.

ZA WARNING
Heavy
braking while driving through curves or
in poor road or weather conditions can cause
the vehicle to slide or the rear of the vehicle to
swerve, which increases the risk of an acci-
dent.

Messages
EG / @ Parking brake: malfunction! Safely
stop vehicle. See owner's manual
There is a malfunction in the parking brake. If the
message appears while stationary, check if the
parking brake is released and can be reset. If this
is the case, switch the ignition off and back on.
If the message continues to appear, if the park-
ing brake cannot be released, or if the message
appears while driving, then stop the vehicle on
level
ground and shift to “P”. Do not continue
driving. See an authorized Audi dealer or author-
ized Audi Service Facility for assistance.
GG / @ Parking brake: malfunction! Please
release parking brake
There
is a malfunction in the parking brake. If the
message appears while stationary, check if the
parking brake is released and can be reset. If this
is the case, switch the ignition off and back on.
If the message continues to appear, if the park-
ing brake cannot be released, or if the message
appears while driving, then stop the vehicle on
level
ground and shift to “P”. Do not continue
driving. See an authorized Audi dealer or author-
ized Audi Service Facility for assistance.
125
>

Driving

25] Parking brake: malfunction! Please contact
Service
There is a malfunction in the parking brake. Drive
to an authorized Audi dealer or authorized Audi
Service Facility immediately to have the malfunc-
tion corrected. Do not park the vehicle on inclines
and shift to “P”.
a / {Q)] Parking brake: warning! Vehicle parked
too steep
The braking force may not be enough to secure
the vehicle from rolling away. Park the vehicle in
a place with less of an incline.
fa / Parking brake: applied
The parking brake is set. Press and hold the brake
pedal to release the parking brake.
Special driving situations
Driving uphill and downhill
When driving uphill, downhill, or at high alti-
tudes, note the following information:
— Drive slowly and carefully.
— Do not try to turn around if you cannot safely
drive on an incline or hill. Instead, drive in re-
verse.
— When driving down hills, you can activate the
hill descent control if you press the brake pedal
while driving in “D” gear. The automatic trans-
mission will select a gear suitable for driving
down the hill and will attempt to maintain the
speed at which the vehicle was traveling at the
time the brake pedal was pressed. Press the
brake pedal if necessary. The hill descent con-
trol will switch off once the hill levels out or
you press the accelerator pedal.
— Utilize the engine braking effect when driving
downhill by selecting the “S” driving program
=> page 114. This especially applies when tow-
ing a trailer. This reduces the load on the
brakes.
— Brake in intervals and do not press the brake
pedal continuously.
126

Z\ WARNING
— Only drive on inclines that your vehicle is de-
signed to handle. Do not exceed the hill
climbing ability of your vehicle. Your vehicle
could tip or slide.
— Do not drive at an angle on steep inclines
and hills. If your vehicle is about to tip, you
must immediately start steering in the di-
rection of the downward slope to reduce the
risk of an accident.
— Always be ready to brake when using the hill
descent control function.

Driving through water
If you must drive through water, follow these in-
structions:
— Check the stability of the ground, the current,
and the water depth. If the ground is unstable,
there is a strong current, or there are waves,
the water must only reach up to the lower edge
of the body at the most.
— Deactivate the Start/Stop system.
— Drive carefully and no faster than at walking
speeds to prevent the front of the vehicle from
creating waves, because they could splash
above the lower edge of the body. Oncoming
vehicles could also create waves.
— Do not stop the vehicle while in the water.
— Drive in reverse.
— Do not turn the engine off.

ZX WARNING
After driving through water, press the brake
pedal carefully to dry the brakes so that the
full braking effect will be restored.

@) Note
Vehicle components such as the engine, drive
system, suspension, or electrical system, can
be severely damaged by driving through wa-
ter?
@ Tips
If possible, avoid driving through salt water
because it increases the risk of corrosion. Use >

4N0012721BD
Driving dynamic


are too high. Unlike front wheel drive
vehicles, the engine RPM does not increase
suddenly when the vehicle begins hydro-
planing. Adapt your speed to the road condi-
tions to reduce the risk of an accident.
Sy Telamelaielcls
Applies to: vehicles with sport differential

The sport differential distributes the drive power
to the rear axle based on the situation. The goal
is a high level of agility and ability to accelerate
on curves. The vehicle is very responsive to steer-
ing. The settings depend on the selected Audi
drive select* mode.
Messages
Hi Sport differential: malfunction! Please con-
tact Service
Drive immediately to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction repaired.
it} Sport differential: temperature too high.
Please adapt driving style
The transmission temperature has increased sig-
nificantly due to the sporty driving manner. Drive
in a less sporty manner until the temperature re-
turns to the normal range and the indicator light
switches of.

Z\ WARNING
Contact an authorized Audi dealer or author-
ized Audi Service Facility if the sport differen-
tial is faulty or malfunctioning. The repair
must be performed by trained personnel us-
ing the correct oil in order to ensure safety.

Electronic Stabilization
Control
Electronic Stabilization Control (ESC) supports
driver safety. It reduces the risk of slipping and
improves driving stability. ESC detects critical sit-
uations, such as if the vehicle is oversteering or
understeering, or if the wheels are spinning. The
brakes are applied or the engine torque is re-
duced in order to stabilize the vehicle.
If the [i indicator light blinks while driving, the
ESC is actively regulating.
If the B&B indicator light turns on, the system has
switched the ESC off. In this case, you can switch
the ignition off and then on to switch the ESC on
again. The indicator light turns off when the sys-
tem is fully functional.
If the B indicator light turns on, ESC was limit-
ed or switched off manually > page 134.
The following systems are integrated in the ESC:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking when brak-
ing. The vehicle can still be steered even during
hard braking. Apply steady pressure to the brake
pedal. Do not pump the pedal.
A pulsing in the brake pedal indicates that the
system is acting to stabilize the vehicle.
Brake assist
The brake assist system can decrease braking dis-
tance. It increases braking power when the driver
presses the brake pedal quickly in emergency sit-
uations. You must press and hold the brake pedal
until the dangerous situation is over. Depending
on the activated driver assistance systems, the
brake assist system may react with increased sen-
sitivity.
Anti-Slip Regulation (ASR)
ASR reduces drive power when the wheels begin
spinning and adapts the power to the road condi-
tions. This will increase the driving stability.
Electronic Differential Lock (EDL)
The EDL applies the brakes to wheels that are
slipping and transfers the drive power to the oth-
er wheels. This function is not available at higher
speeds.
In extreme cases, EDL automatically switches off
to keep the brake on the braked wheel from over-
heating. The vehicle is still functioning correctly. >
133