2018 AUDI A4 roof

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engaged, for example when you notice that the next traffic light is red . This produces an engine
braking effect, which helps to protect the brakes
and tires and reduces the emissions and fuel con ­
sumpt ion to zero (fuel shut-off dur ing decelera­
tion) .
Shift efficiently
Upshifting earlier is an effective way to save fuel.
Staying in a gear too long uses fuel unnecessari­
ly.
Applies to: vehicles with manual transmission
Shift as soon as possible from first to second
gear. S hifting to the next highest gear at approxi­
mately 2,000 RPMs if poss ible is recommended.
Applies to: vehicles with automatic transmissions
Press down on the acce le rator peda l slowly and
avoid "kick -down".
Avoid full acceleration
You should rarely travel at the maximum vehicle
speed. High speeds cause a disproportionately
high increase in fuel consumption, emissions and
traffic noise. Driving more slowly saves fuel.
Reduce idling time
The Start/Stop system* he lps to reduce the idling
time automatically. In vehicles without the Start/
Stop system*, it is efficient to switch the engine
off when stopped at railroad cross ings and long
r ed lights. Stopping the engine for 30-40 sec­
onds already saves more fuel than the amount of
extra fuel needed to restart the eng ine.
It takes a very long time in idle to warm the en­
g ine up to operating temperature. Wear and
emissions are especially h igh in the wa rm-up
phase . Therefore, you should begi n driving im­
mediately a fter starting the engine . Avoid high
RPMs while do ing this .
Have maintenance performed regularly
By having maintenance performed regu larly on
your veh icle, yo u ca n he lp to reduce f uel con­
sumption before yo u even start to drive. The
maintenance condition of your vehicle not only
affects traffic safety and long-term value but a l-
Driving
so impacts fuel consumption . A poorly main ­
tained engine can lead to fuel consumption that is 10% higher than norma l.
Avoid short trips
The eng ine and exhaust cleaning system must
reach their optimal operat ing temperatu re to ef­
f ectively reduce consumption and emissions.
A cold engine uses a disproportionately high
amount of fue l. The engine reaches operating
temperat ure and consumption normalizes on ly
after approximate ly 2.5 miles (4 km).
Check the tire pressure
To save fuel, make sure the tires are always in­
flated to the correct press ure
~ page 344. The
fuel consumption can increase by 5% if the pres­
s u re is only 0.5 bar too low. Due to the increased
rolling resistance, low tire pressures wi ll also
l ead to greater tire wear and will affect driving
behavior.
Do not drive on winter tires year-round, as this
will consume up to 10% more fuel.
Eliminate unnecessary weight
S in ce eve ry po und of ext ra weight increases f uel
consumption , a quick inspection of the luggage
compartment may be worth it to avoid unneces ­
sary weight .
When not be ing used , a roof rack should be re­
moved to decrease the wind resistance of the ve­
hicle. This will save you approximately 12% fuel
at speeds from 62 -75 mph (100 - 120 km/h) .
Save energy
The eng ine drives the generator, which generates
electric ity; the fuel consumpt io n also incr eases
with the demand for electr icity. The refore, switch
electrical eq uipment off when you no longer
need it . Examples of equipment that uses a lo t of
energy are air blowers at a high setting, the rear
window defogger and seat heating* .
@ Note
Do not leave engine idling unattended after
starting. If warning lights shou ld come on to
indicate improper operation, they would go
81

Assistance systems
This message appears if you would like to switch
the system on and there is a stationary object di­
rectly in front of your veh icle.
Door open
The system is not ava ilable when the door is
open.
Audi pre sense
Introduction
A pp lies to: ve hicles w ith Audi p re se nse
W ithin the limits of the system, the pre sense
functions can initiate measures in particularly
dangerous situations to protect the veh icle pas­
sengers and other road users .
- Due to the interlinking of various vehicle sys­
tems, crit ical dr iving s ituations can be detected
by
pre sense basic and measures for preventa ­
tive occupant protection are can be initiated .
- The
pre sense front system uses the data from
the adapt ive cruise control* radar sensors and
the camera to calculate the probab ility of a col­
li sion. Withi n the limits of the system, an im­
pending collision with vehicles can be dete cted
in both urban and rural speed ranges. In this
case, the system warns the driver visually,
acoustically and with a jerk on the brakes if nec­
essary. If needed, it can initiate a partial or full
deceleration to reduce the co llision speed or to
avo id the collision under certain c ircumstances .
In conjunct ion with pre sense basic/rear, the
front safety belts are also revers ibly tensioned
when needed . The pre sense front is also active
whe n adapt ive cruise control* is swit ched off.
- Pre sense rear contains pre sense basic func­
tions. It uses the data from the side assist* ra­
dar sensors and calculates within the limits of
the system the probab ility of a rear end coll i­
s ion with the vehicle behind you. Pre sense rear
is also active when side assist* is switched off.
- Within the limits of the system,
pre sense city
uses the camera data and can detect an im ­
pending collision with vehicles and pedestrians.
In this case, the system warns the driver visual ­
ly, acoustically and with a jerk on the brakes if
necessary. If needed, it can initiate a full decel­
eration to reduce the collision speed or to avoid
120
the collision under certa in circumstances . In
conjunction with pre sense basic/rear, the front
safety belts are also reversibly tensioned when
needed .
A WARNING
-
Read the general information inc> & in Gen-
eral information on page 109,
c> & in Gener­
al information on page 130.
(D Tips
- Certain pre sense funct ions sw itch off when
dr iving in reverse.
- The pre sense functions may not be availa­
ble if there is a malfunct ion in the ESC sys­
tem or the a irbag control module.
- Note that the reversible belt tensioner on
the front passenger's side deactivates when
the front passenger's airbag is deactivated .
- Switch the pre sense off when you are not
using public streets or when loading the ve­
hicle onto a vehicle carrier, tra in, sh ip or
other type of transportation. This can pre­
vent an undesired intervention from
the pre
sense system.
Audi pre sense basic
Description
App lies to : vehicles wi th Audi pre sense basic
The pre sense bas ic functions are activated at a
speed of approx imately 20 mph (30 km/h) or
higher .
The following functions can be triggered under certain condit ions w ith in the lim its of the sys­
tem:
- Tensioning of the safety belts (for examp le,
during heavy brak ing): the front safety belts
have reversib le be lt tens ioners. If a collision
does not occur, the safety belts loosen slightly
and are ready to trigger again.
- Closing the windows and sunroof* .
-

-Activating the emergency flashers l).
The message Audi pre sense . ¢ page 121,
fig. 122 will warn you abo ut the danger.
Aud i drive select*: the trigger t imes are adjusted
depending on the mode selected.
Audi pre sense front
Description
Applies to: veh icles with Audi adaptive cruise control
Within the limits of the system, pre sense front
can warn you of impending collisions and initiate
the corresponding braking maneuvers or the sup­ porting measures when avoiding a collision .
If detected in time, the system can rank the dan­
gerous situation as critical if a vehicle driving
ahead brakes suddenly, if your own vehicle is ap­
proaching a significantly slower vehicle at high
speed or when there is an oncoming vehicle dur­
in g a turning maneuver .
If detection is not possible, then pre sense front
does not react .
Warnings
Applies to: ve hicles with Audi adaptive cruise control
Fig. 122 In strument cluste r: approac h warning
General information
The system recognizes various dangerous situa­
tions . The
early warning occurs if:
-a vehicle driving ahead brakes suddenly,
-your own vehicle approaches a significantly
a s lower vehicle or stationary vehicle in the direc-co
;::; tion of travel. ,....
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3 1) This is not availa ble in some co untrie s. co
Assistance systems
When this warning occurs, it may only be possi­
ble to avoid a collision by swerving or braking
strongly. The message
Audi pre sense.
¢ fig. 122 and a warning tone will warn you
about the danger .
If you do not react enough or not at all to a dan­
gerous situation that was detected by the sys­
tem, pre sense front provides assistance by ap­ plying the brakes .
If a collision is imminent, the system will first
provide an
acute warning by braking sharply. You
will also warned by an indicator in the instrument
cluster
display¢ fig. 122. If you do not react to
the acute warning, pre sense front can brake with i ncreasing fo rce within the limits of the
system
1>. This reduces the vehicle speed in the
event of a collision. At low vehicle speeds, pre
sense front can in itiate a complete deceleration
shortly before a collision with a vehicle driving
ahead
l). If pre sense front determines that you
are not braking strongly enough when a collision
is imminent, it can increase the braking force.
T he following functions trigger in conjunction
with pre sense basic/rear at corresponding vehi ­
cle speeds:
-Reversible tensioning of the front safety belts.
-Closing the windows and sunroof* .
-Inflating the side bolsters* on the seat back-
rest .
Audi drive select*: depending on the mode se­ lected, the reversible belt tensioner, the closing
of the w indows and sunroof*, and the inflating of
the side bolsters* on the seat backrest may not be active.
Evasive steering support
Evasive steering support helps you to steer the
vehicle around an obstacle in a critical situation .
If you avo id an obstacle after the acute warning,
then the evasive steer ing support ass ists you by
applying slight stee ring adjustment to correct
.,.
121

Ass is tan ce sys tems
your steering whee l ang le as long as you are ac­
tively steering. Evasive steering support is availa­
b le at speeds between approximately 20 mph
(30 km/h) and 90 mph (150 km/h).
Tu rn assist
When start ing to drive and up to speeds of maxi­
mum
6 mph (10 km/h), the turn assist uses a
braking intervention to prevent your vehicle from
colliding with an oncoming vehicle when turning
left or right (available in certain countries). The
braking intervent ion causes your vehicle to stay
in its lane.
A WARNING
-Pre sense front cannot overcome the laws of
physics.
It is a system des igned to assist and
it cannot prevent a collision in every circum­
stance. The driver must always i ntervene.
T he driver is always responsib le for braking
at the correct time. Do not let the increased
safety provided tempt you into taking risks .
This could increase your risk of a collision.
- The system can deploy incorrectly due to
system-specific limits .
- Please note that the sensors and the camera
do not always detect all objects or lane
markings. This increases the risk of an acci­
dent.
- Pre sense front does not react to people, an­
imals or ob jects that are crossing the veh i­
cle's path or that are difficu lt to
detect¢ .&.
in General information on page 109.
-Reflective objects such as guard rails or the
entrance to a tunnel, heavy rain and ice can
affect the fu nction of the radar sensors and
the system's ability to detect a coll is ion risk .
(D Note
The sensors can be displaced by impacts or
damage to the bumper, whee l housing and
underbody. Pre sense front can be impa ired
by this. Have an authorized Aud i dealer or au­
thorized Audi Service Fac ility check their func­
tion.
l ) Th is is not availab le in some countr ies.
122
(D Tips
- You can cancel the braking with increas ing
force that is initiated by the system by bra k­
ing yourself, by acce lerating not iceably or
by swerving.
- Keep in mind that pre sense front can brake
unexpectedly. Always secure any cargo or
objects that you are transporting to reduce
the risk of damage or injury.
- Specific pre sense front functions switch off
when the ESC is restricted or sw itched off
¢ page 147 or the hill ho ld assist" is
switched on
¢ page 148 .
Audi pre sense rear
Description
Applies to : vehicles wi th Aud i s ide ass ist
If the risk of a co llision with a vehicle ahead is de­
tected, the follow ing funct ions can be triggered:
- Reversible tensioning of the front safety belts
at the corresponding speeds .
- Closing the windows
and sunroof*.
- Infla ting the side bo ls ters* on the seat back-
rest.
- Ac tivat ing the emergency flashers with in -
creased frequency
l l.
The message Audi pr e sense. ¢ page 121,
fig. 122
will warn you about the danger.
Audi drive select": the function is not active de­
pending on the mode selected.
A WARNING
- To reduce the r isk of an accident, please
no te t hat the s ide assist* radar sensors do
no t always dete ct every object.
-
- Pre sense rear does not react to people, ani­
mals or objects that a re c ross ing the vehi­
cle 's path o r that are d ifficult to detec t.
- Ref lective objects such as gua rd ra ils, heavy
rain and i ce can impair the func tion of the
radar sensors an d the abili ty to detect a col­
lision risk.

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(D Note
The radar sensors can be displaced by impacts
or damage to the bumper, wheel housing and
underbody. Pre sense rear can be impaired by
this. Have an authorized Audi dealer or au­
thorized Audi Service Facility check their func­
tion .
(D Tips
-The pre sense rear functions switch off
when towing a trailer .
- The pre sense rear functions may also
switch off if there is a malfunction in the
side assist* system.
Audi pre sense city
Description
Applies to: vehicles with Audi pre sense city
Within the limits of the system, pre sense city
can warn you of impending collisions with
vehicles and pedestrians and initiate the applica­
ble braking maneuver if needed. Pre sense city is
active at speeds of approximately 6 mph (10 km/ h) and higher.
A pedestrian warning can occur at speeds up to
50 mph (85 km/h), and vehicle warnings can oc­
cur at speeds up to 155 mph (250 km/h) . A pre
sense city braking maneuver is poss ible at speeds
up to 50 mph (85 km/h).
Warnings
Applies to: vehicles with Audi pre sense city
The system recognizes various dangerous s itua­
tions. The
early warning occurs if:
- a vehicle driving ahead brakes suddenly,
- your own vehicle approaches a significantly
slower vehicle or stationary veh icle in the direc­
t ion of travel.
- a pedestrian is standing in the lane or is moving
i nto the lane .
When this warning occurs, it may only be possi­ ble to avoid a collision by swerving or braking
strongly. The message
Audi pre sense .
Assistance systems
¢page 121, fig. 122 and a warning tone will
warn you about the danger.
Additionally, a jerk on the brakes may occur as an
acute warning when there is an imp ending colli­
sion . If you do not react to the acute warning, pre
sense city can brake to the point of complete de­
celeration within the limits of the system . T his
reduces the vehicle speed in the event of a colli­
sion. The message
Audi pre sense . also ap­
pears.
The following functions are triggered in conjunc­
tion with pre sense basic/rear:
- Reversible tensioning of the front safety belts.
- Closing the windows and sunroof* .
- Inflating the side bolsters* on the seat back-
rest.
Audi drive select*: the function is not act ive de­
pending on the mode selected.
A WARNING
- Pre sense city cannot overcome the laws of
physics.
It is a system designed to assist and
it cannot prevent a coll is ion in every circum­
stance. The driver must always intervene.
The driver is always responsible for braking
at the correct time. Do not let the increased
safety provided tempt you into taking risks.
This could increase your risk of a collision.
- The system can dep loy incorrectly due to
system-specific limits.
- To reduce the risk of an accident, please
note that the camera does not always detect
every object.
- Pre sense city does not react to anima ls,
crossing or oncoming vehicles, objects such
as bars, railings or railcars, and objects that
are difficult to
detect ¢ A in General infor­
mation on page 109 .
-In trailer mode, the braking behavior of the
tra iler can be d ifferent than usual during au­
tomatic braking.
A WARNING
-Pre sense city may be restricted or not availa-
ble in the following example situations:
- in heavy fog, ra in, spray or snow
~
123

Voice recognition system
Voice recognition system Operating
Applies to: vehicles with vo ice recognition system
You con operate many Infotainment functions
conveniently by speaking.
Req uirements: the ignition and the MM I must be
sw itched
on~ page 155 , there must not be any
phone call in progress and the parking system
m ust not be active .
.. Switching on: press the~ button @
¢
page 15, fig. 11 or ¢ page 16, fig . 13 briefly
on the multifunction steering wheel and say
the des ired command after the
Beep .
.. Switching off : press and hold the~ button.
Or: press the l2l button.
.,. Pause : say the command Pause . To resume,
press
the~ button .
.,. Correcting : say the command Correction . Or :
simp ly say a new comma nd during an an­
no uncement ¢
page 248.
Input assistance
The system gu ides you throug h the input with
visual and audio feedbac k.
- Visual input as sistance : after switching on
vo ice recognit ion, a display with a selection of
poss ible commands appears . This command
display can be sw itched on o r off. Se lect:
IMENU I button> Set tings > left co ntrol button
> MMI setting s> Speech di alog system .
- Audio input a ssistanc e:
to have the poss ible
commands read, turn t he voice recogn ition sys­
tem on and say
Help.
For the system to understand you:
Speak clearly and dist inctly at a normal volume .
Speak louder when d riving faster .
Emphasize the words in the commands even ly
and do not leave long pauses .
Close the doors, the windows and the sunroof* to reduce background noise . Make sure that passen­
gers are not speaking when you are giving a voice
command .
168
Do not direct the air vents toward the hands -free
microp hone, which is on the roof headliner near
the front interior lights .
Only use the system from the dr iver's seat be­
ca use the hands -free microphone is directed to ­
ward that seat .
Additional settings
See¢ page 248, Speech dialog system .
.8, WARNING
-Dire ct yo ur full attention to dr iv ing . As the
driver, you have complete responsibility fo r
safety in traffic. Only use the functions in
such a way that yo u always maintain com­
plete contro l over your vehicle in a ll traffic
situations .
- Do not use the voice recognition system in
emergencies beca use your voice may change
in stressful s ituations. It may take longer to
dia l the number or the system may not be
ab le to dial it at all. Dial the emergency
number manually.
(D Tips
- The d ialog pauses when there is an incom­
ing phone call and will continue if you ig­
nore the call. The dia log ends if you answer
the ca ll.
- You can select an item in the list us ing ei­
ther the vo ice recognit ion system or the
cont rol knob.
Command overview
information
Applies to: vehicles with voice recognition system
The following overv iews des cribe the commands
that can be used to operate the MMI using the
voice recognition system.
Alte rnative commands are separated using a"/ ",
for example say:
Telephone / (or) Navigation /
(or) Radio.
Sequences of commands used to perform an a c­
tion are identified w ith a
"> ", fo r example say:
Enter addre ss> (t hen) Enter country /state . ..,.

Radio
Radio
Opening the radio
The radio supports the FM, AM and SiriusXM*
(satellite radio) bands. Using the HD Radio
re­
ceiver also allows you to receive radio stations
on the FM and AM bands in digital format.
F ig . 203 FM station list (HD Radio technology FM)
F ig. 2 04 Siri usXM stat ion list
~ Press t he I RADIO I button .
After opening the radio, the last opened station
list is displayed.
S e le cting a station : select and conf irm a station
from the station list . FM/ AM stations that can be
received by digital radio are marked with the HD
Rad io technology symbol
1-Q) ® ¢fig. 203. If re­
ception quality declines, the radio automatically
sw itches to the analog FM/AM station depending
on availability. Digital HD Radio stations* may
contain multiple additional stations*. The avai la­
b le additional stations* are listed under the radio
station. If you lose reception, the additional sta ­
tions* are muted since they can no longer be
re­
ceived .
Setting the fr equ ency band : press the I RADIO I
button repeated ly until the desired frequency
band is set.
The fo llowing information is displayed in the sta­
tion
list ¢ fig. 203/ ¢ fig. 204:
222
(D Pre set s
The stat ion is stored as a preset. The symbo l
shows the sto red loc ation in the p resets list (for
example, 21) .
@ Radio text (s horten ed di spl ay)
If availab le, program information about the set
station is d isplayed in all of the statio n lists .
® Frequenc y
@Stati on name
® Stat ion w ith HD Radio technol ogy ava ilable
~
® Chann el numbe r
If there is a Loss of radio signal (Sir i usXM*), the
following system information is displayed in the
station list:
N oSignal : the tuner is current ly not receiving a
sate llite
signal (!).
The system informa tion turns off when the radio
stations are received again.
@ Tips
- Con tact the SiriusXM" provide r if you would
like to receive satel lite programming .
- Buildings, tunnels, bridges, open areas, oth­
er veh icles o r objects on the veh icle roof can
affect reception.
- Sate llite rad io is not avai lab le in Alaska and
Hawaii.

Driving sa fe ty
Loose items in the luggage compartment can
shift s udden ly, changing vehicle handling charac­
ter istics. Loose items can also increase the risk of
serious personal in jury in a sudden vehicle
ma­
neuver or in a coll is ion.
.,. Distribute the load evenly in the luggage com­
partment .
.,. Always place and properly secure heavy items in
the luggage compartment as low and as far for­
ward as possible
c> fig . 226 .
.,. Secure luggage us ing the tie-downs provided
¢ page 73 .
.,. Make su re that the rea r seatbac k is securely
latched in place.
A WARNING
Improperly stored luggage or othe r items can
fly through the vehicle causing serious per­
sonal injury in the event of hard braking or an
accident. To help reduce the risk of serious
personal injury:
- Always put objects, for example, luggage or
other heavy items in the luggage compart­
ment.
- Always sec ure objects in the luggage com­
partment using the tie-down eyelets and
s u itable straps.
A WARNING
Heavy loads will influence the way your vehi­
cle handles. To he lp reduce the r isk of a loss
of contro l leading to serious pe rsonal i njury:
- Always keep in mind when transporting heavy objects, that a change i n the center of
grav ity can also cause changes in vehicle
hand ling:
- Always distr ibute the load as even ly as
possible.
- Place heavy objects as far forward in the
luggage compartment as poss ible.
- Never exceed the Gross Axle Weight Rating
o r the Gross Vehicle Weight Rating specified
on the safety compliance sticker on the driv­
er's side B-pillar respective ly on the front
end of the driver's door. Exceeding permissi­
ble weight standards can cause the veh icle
to slide and handle differently .
260
-Please observe info rmation on safe driving
¢page 254.
A WARNING
To he lp prevent po isonous exhaust gas from
being drawn into the vehicle, always keep the
rear lid closed while driving.
- Never transport objects larger than those
fitting completely into the luggage area be­
cause the rear lid cannot be fully closed.
- If you absolutely must dr ive with the rear lid
open, observe the following notes to reduce
the risk of poisoning :
- C lose all windows,
- Close the s unroof*,
- Open all a ir outlets in the instrument pan-
el,
- Switc h off the air reci rculat ion,
- Set the fresh air fan to the highest speed.
A WARNING
-
Always make sure that the doo rs, all win­
dows, the sunroof * an d the rear lid are se­
curely closed and locked to red uce the risk of
i n jury when the veh icle is not being used.
- After closing the rear lid, always make sure
that it is properly closed and locked.
- Never leave your ve hicle unattended espe­
cially with the rear lid left open. A child
co uld crawl into the vehicle th rough the lug­
g age com partment an d close the rea r lid
be­
coming tr apped and unab le to ge t out . Be­
ing trapped in a vehicle can lead to ser ious
pe rsonal i nju ry.
- Never let c hild ren p lay in or around the vehi­
cle.
- Never let passengers ride in the luggage
compa rtment. Vehicle occupants mus t
al­
ways be p roperly restrained in one of the ve ­
hicle's seat ing pos itions.
(D Tips
- Air circul ation helps to reduce w indow fog­
ging . Stale ai r escapes to the o uts ide
t h roug h vents in the trim panel. Be sure to
keep these slots free and open.