key AUDI A4 2015 Service Manual

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Audi adaptive cruise control and braking guard 107
Setting the driving mode for vehicles with
Audi drive select*
Refer to <=> page 116.
(D Tips
Your settings are automatically stored and
assigned to the remote control key being
used.
Request for driver intervention
Applies to vehicles: with Audi adaptive cruise control
Fig. 122 Inst rumen t cl us ter: reques t for drive r inte r·
vention
I n ce rtain situat ions, the system will prompt
you to take action . This cou ld happen, for ex­
ample, if braking by the adaptive cruise con­
trol system is not enough to maintain enough
distance to the vehicle ahead.
The instrument cluster will warn you about
the danger<=>
fig. 122:
- A red vehicle is pict ured in the disp lay.
- The text
DISTANCE! appears in the status
bar.
- T he red ind icator light . blinks.
- In add ition, a warning tone sounds.
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise control
Fig. 123 Instr ument cluster: approach warning
Braking guard uses a radar sensor. It also
functions within the limits of the system
when adapt ive cruise control is switched off.
What can Audi braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes sud­
denly or if your own vehicle is traveling at a
high speed and approaching a vehicle up
ahead that is moving more slowly. Braking
guard does not react if it cannot detect the
s ituation.
The system advises you of various situations:
- The
distance warning is given if you are too
close to the vehicle ahead for a long time. If
the vehicle ahead brakes sharply, you will
not be able to avoid a collision . The indicator
light . in the display comes on .
- The
approach warning is given when a de­
tected vehicle up ahead in your lane is mov­
ing much more slowly than you are or if it
brakes sharply. When thi s war ning is given,
it may on ly be possible to avoid a co llision
by swerving or brak ing sharp ly. The indicator
light . and indicator in the display will
warn you about the danger
r=.> fig. 123. You
wi ll also hear an acoustic signal.
If you do not react fast enough or do not react
at all to the situation, Braking guard will in­
te rvene by brak ing and the message
braking
guard intervention
wi ll appear. ~

108 Audi adapti ve cruise control and br aking guard
- If a co llision is imminent, the system will
first provide an
acute wa rning by bri efly and
sharp ly app ly ing the brakes .
- If you do not react to the ac ute warning ,
braking guard can brake within the limits of
the system. This reduces the veh icle speed
in the event of a collis ion.
- At speeds under 20 mph (30 km/h), the sys ­
tem can in it iate a complete deceleration
s hortly before a collision
l) .
-If the braking guard senses that you are not
braking hard enough when a collision is im­
minent, it can increase the braking force.
Which function s can be contr oll ed ?
You can switch braking g uard and the dis­
tance/approach warning on or off in the radio
or MM I c> poge 108, Settings in the radio/
MMI.
A WARNING
Lack of attention can cause col lisions, oth­
er accidents and serious persona l injuries.
The b raking guard is an assist system and
cannot p revent a col lis ion by itself. The
dr iver m ust always in tervene . T he d rive r is
always responsib le for br aking at the cor­
rect time.
- Always pay close attention to traffic,
even when the bra king guard is switched
on. Be ready to intervene and be ready to
take complete control whenever necessa­
ry. A lways keep the safe and legal dis­
tance between your vehicle and vehicles
up ahead.
- Braking guard works w ith in limits and
will not respond outs ide the system lim­
its, for example when approaching a
stopped vehicle or stationary obstacle
(end of a traff ic jam or veh icle that has
broken down in traffic).
- Always remember that the radar sensor
for the braking guard wo rks only within
defined detection and range limits that
l ) Th is is not available in some c oun tri es.
may prevent the proper detection of oth­
er vehicles.
- The radar sensor's function and range
can be reduced by rain, snow and heavy
spray. Moving veh icles up ahead may not
be prompt ly detected or may not be de­
tected at all .
- Reflective surfaces including crash barri­
ers or tunne l entrances may impair the
function of the radar sensor .
(D Tips
- You can cancel the braking that is in it iat­
ed by the system by braking yourse lf, by
accelerating not iceably or by swerving .
- Braking guard error messages
c>poge 109.
- Keep in mind that brak ing guard can
brake unexpectedly. Always secure any
cargo or objects that you are transport­
ing to reduce the risk of damage or in­
jury .
Settings in the radio/MMI
App lies to vehicles : wit h Audi ada ptive cr uise contro l
., Select: !CARI function button> Car sy ste m s*
contro l but ton > Driver a ssist> Audi brak ­
ing guard .
Or
., Select: !CAR I function button> Audi b raking
gua rd.
S ys tem -
Switch A udi braking guard On and
Off . When you switch the ignition on, the
message
Audi b raking guard off appears if
the system is switch ed off .
Ea rly warnin g -The distance and approach
warnings in the display can be switched
On/
Off .
(D Tips
-Yo ur settings are automatically s tored
and assigned to the remote contro l key
being used at the times the settings are
made.

114 Audi side assist
- Side assist is not active wh ile you are
making the adjus tment.
- Your settings are automatica lly sto red
and ass igned to the remote control key
being used.
Driver messages
App lies to vehicles: with Audi side assist
If s ide ass ist switches off by itse lf, t he LED in
the butto n tur ns off a nd a message will ap­
pear in t he instr ume nt cl uster d is p lay:
Audi side assist unavailable : Sensors blocked
T he radar sensors' vision is a ffected. Do not
cover the area in front of the senso rs with bike
wheels, stickers, dirt or other objects . Clean
the area in front of the sensors, if necessary
c::;,page 112, fig. 127.
Audi side assist : Currently unavailable
Side assist can not be swi tched on tempora ril y
bec ause there is a mal func tio n (for ex am ple,
the ba ttery cha rge leve l may be too low) .
Audi side assist : System fault!
The system ca nnot guara ntee that it w ill de­
tec t ve hicles co rrec tly and it is sw itched off .
Th e senso rs have been displaced o r are faulty .
H ave the sys tem che cked by an au thor ized
Au di d eale r or auth oriz e d Au di S ervice Fa cility
soon .
Audi side assist : Unavailable when towing
Side assist sw itches off automatically when a
factory- insta lled trailer hitch is connected to
the elec trical connector on the trailer . There is
no guarantee the system will switc h off when
usi ng a retrofitted t railer hi tch . Do not use
si de assis t when towing a tra iler .

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0 ::.,: co ,...., \!) ..,.,
,...., ..,., ,....,
Systems Comfort
Auto
Dynamic steering*
comfortab le/ind ire ct balanced/direct
Adaptive damper s* comfo rtable balanced
Sport different ial* ba lanced agile
Adaptive cruise control* comfo rtable balanced
Engine sound* subtle subtle/sportya>
a)
Subt le in the dri ving pos ition D and sporty in t he dr iv ing pos ition S.
(D Tips
Your Individual * mode settings are auto­
mat ically stored and assigned to the re­
mote control key being used.
Audi drive select 117
Dynamic
sporty/direct
spo rty
spo rty
spo rty
sporty

"" N
0 ::.,: co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Approaching another obstacle will result in
the distance warning sounding at the normal
volume aga in.
Malfunction s in the s ystem
If a war ning tone is audible for about five sec­
onds when you turn on the ignit ion, there is a
mal function in the system. Have the problem
corrected by your authorized Audi dealer.
Keep t he sensors in the rear bumper clean and
free from ice so t hat the acoustic park assist
system can function properly.
A WARNING
- Sensors have dead spaces in which ob­
jects cannot be detected. Be especially
alert for small children and animals ,
since they are not always detected by the
sensors.
- The acoust ic park ing system is not a sub­
st itute for the d river's own caut io n and
alertness . Ultimate responsib ility always
remains with the driver during park ing
and simi lar maneuvers. Always watch
where you are dr iving .
- You should always adjust the volume and
frequency of the warning tones so that
yo u can easily hear the a co ustic distance
warning even if the radio is p laying, the
air-conditioner blower is on High or there
is a high leve l of outside noise.
- Check the settings whenever anyone
else has driven the vehicle before you.
- Remember that low obstacles for wh ich
-
a war ning has a lready been issued may
"dive" below the system's sensing zone if
the veh icle is being backed up closer . In
th is case, the warn ing sound shutt ing off
does
not i ndi cate that you have cleared
the obs tacle. Instead, impact is immi­
nent .
- Objec ts such as trai ler hitches, c hains,
narrow posts or fences covered by a thin
l ayer of paint may not a lways be detect -
Park a ssis t 119
ed by the sys tem . They can still damage
your vehicle without warning.
(0 Tips
Keep the senso rs in the rear b umpe r clean
and free of snow and ice so that the acous­
tic parking assist system can function proper ly .
Adjusting the warning tones
App lies to vehicles : wit h parking system (rear)
The warning tones con be adjusted in the
MM!*.
.,. Sele ct: !CAR ! func tion button > Parking sys­
tem. Or
.,. Select:
!CAR ! function button > Car sy stem s*
contro l button > Dri ver a ssi st> Parking a id.
- Rear volume -
rear sensor vo lume
- Rear frequency -rear senso r frequency
- Mu sic volume while parking -when the
pa rking system is sw itched on, the volume
of the active audio source is lowered.
The newly adjusted value is briefly heard from
the signal generato r. The sett ings are auto­
matically sto red and assigned to the master
key w ith remote contro l.

124 Park assis t
the b lue area should be on the curb. The en ­
ti re b lue area must fit into the parking spot.
• While the vehicle is stationary, turn the
steering wheel to the right as far as it will
go.
• Back into the park ing spot . Stop the vehicle
as soon as the blue curve touches the curb
¢ fig . 138.
• While the vehicle is stationa ry, turn the
steering wheel to t he left as far as i t wi ll go.
• Conti nue to bac k up into the park ing spot
unti l the vehicle is pa rked parallel to the
c ur b.® marks the rear bumper . You sho uld
stop dr iving in reverse as soon as and no lat­
er than when the red orientation line@
abuts an object¢,&! Keep an eye on the
front of your veh icle wh ile doing this
c> (D .
Pa rking ne xt to obstacle s
When there is an obstacle (such as a wall)
next to the parking spot, choose a spot w ith
more space on the sides. Pos ition the long
side of the blue area so that there is sufficient
space from the curb . T he area must not be on
the curb . Yo u will also need to start turn ing
the steer ing whee l much ear lie r. T he re s hou ld
be a suff ic ient amoun t of sp ace between the
curb and the b lue curve, and the blue c urve
¢
fig . 138 must not touch the curb .
8_ WARNING
-The rea r view came ra does not show the
entire area beh ind the veh icle
¢
page 120, fig. 133. Watch o ut espe­
cially for small children and an imals. The
rear view camera cannot a lways detect
them, pos ing risk of a n accide nt!
- Please note that objects not touch ing the
ground can appear to be further away
than they really are (for examp le, the
bumper of a pa rked vehicle, a t railer
hit ch, or the rear of a t ru ck ). In this case,
yo u shoul d no t use the help li nes to he lp
with par king, which poses danger of an
acc ident!
(D Note
In the M MI dis p lay, the direction of travel
of the vehicle rear is represented depend­
i ng on the steering wheel angle . The vehi­
cle front swings out more than the vehicle
rear. Mainta in plenty of dista nce from an
obstacle so that your outs ide mir ro r or a
corner of you r vehicle does not coll ide with
any obstacles - dange r of accide nt!
(D Tips
The left o r right orie ntation lines and su r­
faces will be disp layed, depending on t he
t u rn s ignal being used .
Adjusting the display and warning tones
Applies to vehicles: with parking system (rear, with rear
view camera)
The display and warning tones are adjus ted in
the radio or MMI*.
.. Select: !CAR I function button> Parking sys­
tem .
Or
--.. Select: !C AR I func tion but ton> Car systems "
control butto n> Driver assist > Parking aid .
Di splay
- Off -when the parking system is switched
on, on ly aud ib le signals are given .
-On -when the par king system is switched
on, the picture from the rear view camera is
disp layed.
Warning tones
- Rear volum e -
rear sensor vo lume
- Rear frequency -rear senso r frequency
- Music volume whil e parking -when the
parking system is sw itched on, the volume
of the active audio sour ce is lowered.
The newly ad justed value is briefly heard from
the sig nal generato r. The sett ings are auto­
matically stored and assigned to the remote
control key. ..,

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Important safety instructions about
safety belts
Safety belts must always be correctly posi­
tioned across the strongest bones of your
body.
~ Always wear safety belts as illustrated and
described in this chapter.
~ Make sure that your safety belts are always
ready for use and are not damaged.
A WARNING
Not wearing safety belts or wearing them
improperly increases the risk of serious
personal injury and death. Safety belts can
work only when used correctly.
- Always fasten your safety be lts correctly
before driving off and make sure all pas­
sengers are correctly restrained.
- For maximum protection, safety belts must always be positioned properly on
the body .
- Never strap more than one person, in­
cluding small children, into any belt.
- Never place a safety belt over a child sit­ ting on your lap.
- Always keep feet in the footwell in front
of the seat while the vehicle is being d riv­
en .
- Never let any person ride with their feet
on the instrument panel or sticking out
the window or on the seat.
- Never remove a safety belt while the ve­
hicle is moving. Doing so will increase
your risk of be ing injured or killed.
- Never wear belts twisted.
- Never wear belts over rigid or breakable
objects in or on your clothing, such as
eye glasses, pens, keys, etc., as these may cause injury.
- Never allow safety belts to become dam­
aged by being caught in door or seat
hardware .
- Do not wear the shoulder part of the belt
under your arm or otherwise out of posi ­
tion . Safety belts
139
- Several layers of heavy clothing may in­
terfere with correct positioning of belts and reduce the overall effectiveness of
the system .
- Always keep belt buckles free of anything
that may prevent the buckle from latch­
ing securely .
- Never use comfort clips or devices that
create slack in the shoulder belt . Howev­
er, special clips may be requ ired for the
proper use of some child restraint sys­
tems .
- Torn or frayed safety belts can tear, and
damaged belt hardware can break in an
accident. Inspect belts regularly.
If web­
bing , bindings, buckles, or retractors are
damaged, have belts replaced by an au­
thorized Audi dealer.
- Safety belts that have been worn and
loaded in an accident must be replaced
with the correct replacement safety belt
by an authorized Audi dealer. Replace­
ment may be necessary even if damage
cannot be clearly seen. Anchorages that
were loaded must also be inspected.
- Never remove, modify, disassemble, or
try to repair the safety belts you rs elf .
- Always keep the belts clean. Dirty belts
may not work properly and can impair
the function of the inertia reel¢
ta­
ble Cleaning interior on page 204.
Safety belts
Fastening safety belts
Safety first -everybody buckle up!
Fig. 148 B elt buckle and to ngue o n the driver's se at

140 Safety belts
To provide maximum protection, safety belts must always be positioned correctly on the
wearer 's body .
.,. Adjust the front seat and head restraint
properly ¢
page 60, Seats and storage .
.,. Make sure the seatback of the rear seat
bench is in an upright position and securely
latched in place befo re using the belt¢.&, .
.,. Hold the belt by the tongue and pull it even-
ly across the chest and pelvis¢.&, .
.,. Insert the tongue into the correct buckle of
your seat until you hear it latch securely
¢fig . 148.
.,. Pull on the belt to make sure that it is se-
curely latched in the buckle .
Automatic safety belt retractors
Every safety belt is equipped with an automat­
ic belt retractor on the shoulder belt . This fea­
ture locks the belt when the belt is pulled out
fast, during hard braking and in an accident.
The belt may also lock when you drive up or
down a steep hill or through a sharp curve. During normal driving the belt lets you move
freely .
Safety belt pretensioners
The safety belts are equipped with a be lt pre­
tensioner that helps to tighten the safety belt
and remove slack when the pretensioner is ac ­
tivated. The function of the pretensioner is
monitored by a warning light¢
page 20 .
Convertible locking retractor
Every safety belt except the one on the driver
seat is equipped with a convertible locking re­
tractor that
must be used when the safety
belt is used to attach a child safety seat. Be
sure to read the important information about
this feature ¢
page 175.
A WARNING
Improperly positioned safety belts can
cause serious injury in an accident
¢ page 140, Safety belt position.
- Safety belts offer optimum protection
only when the seatback is upright and
-
belts are properly positioned on the
body.
- Always make sure that the rear seat
backrest to which the center rear safety
belt is attached is securely latched when­
ever the rear center safety belt is being
used. If the backrest is not securely
latched, the passenger w ill move for­
ward with the backrest during sudden
braking, in a sudden maneuver and espe­
cially in a crash .
- Never attach the safety belt to the buck­
le for another seat. Attaching the belt to
the wrong buckle will reduce safety belt
effectiveness and can cause serious per­
sonal injury.
- A passenger who is not properly restrain­
ed can be seriously injured by the safety
belt itself when it moves from the stron­
ger parts of the body into critical areas
like the abdomen .
- Always lock the convertible locking re­
tractor when you are securing a child
safety seat in the vehicle
c:> page 177.
Safety belt position
Correct belt position is the key to gett ing
maximum protection from safety belts.
Fig. 149 Safety bel t position
Standard features on your vehicle help you ad ­
just the position of the safety belt to match
your body size.
- belt height adjustment for the front seats,
- automatic belt height adjustment for the
rear seats .

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-Always keep the f iller nozzle complete­
ly inside the portable conta iner before
and during filling.
- If filling a portable container made of
metal, the filler nozz le must always be
in contact with the container. Th is w ill
he lp prevent static electricity from dis­
charg ing and cause a fire .
- Never sp ill fuel inside the vehicle or
luggage compartment. Fue l vapors are
h ighly f lammable .
- Always observe local and state/provin­ cial laws regarding the use, storage
and tra nspo rta tion of fuel containers.
- Make certa in the fuel conta iner meets
industry standards (A NSI
I ASTM
F852-86).
(D Note
If any fuel has spilled onto the car, it
should be removed immediate ly to prevent
damage to the paint.
@ For the sake of the environment
As soon as the correctly operated nozzle
sw itches off automatically for the fi rs t
time, the tank is full. Do not try to add
more f ue l because fuel may spill out. In
add it ion , the expans io n s pace in the fuel
t ank will be fi lled -ca using the fue l to
overflow when it becomes warm and pol ­
lute the env iro nment.
@ Tips
- Runn ing yo ur engine while re fuelling
may ca use vapors to escape o r even
ca use fue l to spill out of the tank . This
would then shut off the fuel nozzle be­
fo re the tank is fu ll.
- Do not refuel your ve hicle w ith the igni ­
tion t urned on. The fuel gauge may oth­
erwise not ind icate the correct fue l level
after refuel ling.
- The fuel filler flap of your vehicle is not locked when you lock the vehicle from
the i nside.
Fu el suppl y and filli ng your fuel t ank 211
Unlocking the fuel filler flap by hand
You can open the fuel filler flap by hand if the
power loc king system should fail .
Fig. 1 78 Sedan L uggage compartment: ope ning the
si de t rim
Fig. 17 9 Luggage com partme nt: Eme rge ncy o pen ing
of fue l
fi lier flap
The emergency opening mechanism is located
behind the r ight side trim panel in the l ug­
gage comp artment .
Opening the side trim
.,.. Sedan: Insert a tool such as a sc rewdriver
<=:> page 260 o r the emergency key into the
r ight side of the upper gap ¢
fig. 178.
.... Sedan: Pry upwar d to release the trim.
.,.. allroad: Open the rig ht side trim pane l.
Fuel filler door emergency release
.,.. Loosen the st rap from its bracket and p ull
on it
i=:> fig . 179 . You can now op en the fuel
filler flap as usual ¢
page 210.

212 Checking and filling
Checking and filling
Engine hood
Releasing and opening the engine hood
The engine hood is released from inside the
vehicle .
Fig. 180 Driver's side footwe ll: e ngin e hood release
lever
... -- - -=-
Fig. 181 Release lever u nde r the engine hood
Before opening the engine hood, make sure
that the windshield wipers are flat against the
windshield. Otherwise, they could damage the
pa int on the hood.
... With the driver's door open, pull the lever
under the instrument panel in the direction
of the arrow
c> fig . 180.
... Raise the hood slightly c> .&,
... Press the rocker switch under the hood up­
ward
c> fig . 181 . This releases the catch.
... Open the hood.
A WARNING
Hot engine coo lant can burn you.
- T o reduce the risk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment. Wait until no steam or coo
lant can be seen or heard before care­
fully opening the hood.
Closing the engine hood
... Pull the hood down until the pressure from
the struts is reduced .
... Let the hood
drop down and latch in place.
Do not try to push it shut; it may fail to en­
gage
c> .&, .
A WARNING
-
A hood that is not completely latched
could fly up and b lock your view while driv­
ing.
- When you close the engine hood, check it
to make sure the safety catch has proper­
ly engaged . The hood shou ld be flush
with the surrounding vehicle body parts.
-If you notice while driving that the hood
is not secured properly, stop at once and
close it.
Working in the engine compartment
Be especially careful whenever you work in
the engine compartment.
Whenever you must perform any work in the
engine compartment, for example checking
and filling different fluids , there is a risk of
injury , burns and accidents. To prevent per­
sonal injury always observe the following
WARNINGS. The engine compartment of any
vehicle is a hazardous area
c> ,&..
A WARNING
-To help avoid injury, before you check any-
thing under the hood:
- Turn off the engine.
- Remove the ignition key.
- Apply the parking brake.
- Move selector lever of automatic trans-
mission to "P" (Park); put manual trans­
mission in Neutral.
- Always let the engine cool down. Hot
components will burn skin on contact .