2014 AUDI S7 sensor

194 Audi pre sense
Audi pre sense
Preventative passenger
protection
A pp lies to veh icles: with Audi pre se nse
Audi pre sense can initiate steps to help pro­
tect vehicle occupants in certain situations.
The functions described depend on equ ipment
installed in your vehicle:
Audi pre sense basic*
The following functions can be triggered in
certain driving situations:
- Tightening of the safety belts (for example,
during heavy braking) : the front safety belts
have reversible belt pretensioners. If a colli­
sion does not occur, the safety belts loosen
slightly and are ready to be tightened again.
- Closing the windows and the sunroof*: the
windows and the sunroof* close leaving a
small open gap.
Audi pre sense basic functions can be trig­
gered at speeds above 20 mph (30 km/h).
Vehicles with Aud i drive select*: the deploy­
ment time is adapted in
Dynamic mode.
Audi pre sense front (vehicles with
adaptive cruise control*)
Audi pre sense front includes the functions in
Audi pre sense basic. In addition, within the
limits of the system, the likelihood of a colli ­
sion with the vehicle immediately ahead is al­
so calculated . If the system senses an immi­
nent collision the following functions can be
tr iggered :
- Braking guard
c::> page 92
- Tightening the safety be lts
- Closing the windows and the sunroof* (leav -
ing a small open gap)
Audi pre sense rear (vehicles with Audi
side assist*)
Audi pre sense rear includes the functions in
Audi pre sense basic. In addition, the likeli­
hood of a rear-end collision with the vehicle
coming from behind is also calcu lated.
If the risk
of a co llision is detected, the following
functions can be triggered:
- Tig htening the safety belts
- Closing the windows and the sunroof* (leav-
ing a small open gap)
Audi pre sense plus*
Audi pre sense plus includes the functions in
Audi pre sense front and Audi pre sense rear.
Error message
Audi pre sense: not available
Preventative passenger protection is not avail­
able. See your authorized Audi dealer immedi­
ately to have the malfunction corrected.
_& WARNING
-=
Audi pre sense cannot overcome the laws
of physics. It cannot prevent a collision. Do
not let the increased safety provided
tempt you to take risks. This will increase
the r isk of a collis ion and serious personal
in juries .
- The sensors cannot always detect all ob­
jects. This increases the risk of a colli­
s10n.
-Aud i pre sense does not detect people or
an im als or objects that are crossing the
veh icle's path
c::> page 86.
-The radar sensor's vis ion can be reduced
by heavy rain, ice, snow, heavy road sp ray
and reflections from guard rails, tunnel
entrances, etc. These and similar condi­
tions can prevent vehicles from being ac ­
curately detected and in some cases they
may not be detected at all.
(D Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. This can affect the function of
the Audi pre sense system. Have your au­
thorized Audi dealer check to make sure
that the system is working properly.

202 Intellig ent technol ogy
Tire chain s
Where t ire cha ins are mandatory on certain
roads, this normally a lso applies to vehicles
with a ll- wheel drive
c::> page 259, Snow
chains .
Replacing wheels /t ir es
Vehicles with all-whee l drive must a lways
have tires of the same size. Also avoid t ires
with different tread depths. For details see
page
c::> page 2 54, New tires and replacing
tires and wheels.
Off -Ro ad dri ving?
Your Aud i does not have enough ground clear­
ance to be used as an off -road veh icle.
It is
therefore best to avoid rough tracks and un ­
even terrain as much as possible . Also refer to
c::> page206.
A WARNING
Always adjust your driving to road and traf­
fic condit ions. Do not let the extra safety
afforded by all-wheel dr ive tempt you into
taking extra r isks.
- Although the all-wheel dr ive is very ef­
fective, always remember that braking capacity is limited by t ire traction . You
should the refore not dr ive at excessive
speeds on icy or slippery road su rfaces.
- On wet road surfaces, be careful not to
dr ive too fast because the front wheels
cou ld beg in to s lide on top of the w ater
(aquaplaning) .
If this should occ ur, you
wi ll have no warning from a sudden in ­
crease in engine speed as with a front­
wheel drive vehicle. A lways drive at
speeds wh ich are suited to the road con­
ditions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting the engine.
If a vehicle with a conventional energy system
is not driven for a long per iod of t ime, the bat­
tery is discharged by idling current consumers (e .g. immobilize r). In certa in circumstances it
can resu lt in the re be ing insufficient energy
available to start the engine.
Intelligent energy management in your vehi­
cl e ha ndles the distribution of e lectr ica l ene r­
gy . Start ing ability is ma rkedly improved and
the life of the battery is extended .
Bas ica lly, energy management consists of
b att ery diagn osis, idlin g current manage ­
m ent
and dynamic en erg y manag em ent .
Battery di agnosis
Battery diagnosis continuously determines
the state of the battery. Sensors determine
battery voltage, battery cu rrent and battery
tempe rature. This determines the current
state o f charge and the power of t he battery .
Idling current management
Idling current management reduces energy
consumption while the vehicle is standing .
With the ig nition sw itched
off, it controls the
energy supply to the various electri ca l compo ­
nents. Da ta from ba ttery diagnos is is cons id ­
ered.
Depend ing on the batte ry's state of cha rge,
individual cons ume rs a re g radually turned
off
to prevent excessive discharge of the battery
and th us maintain starting capability.
Dynamic energy manag ement
While the vehicle is being d riven, dynamic en­
ergy ma nagement distr ibutes the energy gen­
era ted a ccord ing to t he needs of the individ u-
al components .
It regula tes consumption, so
t h at more electrical energy is not being used ..,.

214 Vehicle care and cleaning
A WARNING
- Only wash the vehicle when the ignition
is off and follow the instructions from
the car wash operator to reduce the risk
of accidents .
- To reduce the r isk of cuts, p rotect your­
self from shar p meta l compone nts w hen
was hing t he unde rbody or the ins ide of
the whee l housings.
- Aft er washing the vehicle, the braking ef­
fec t may be de layed due to mo isture o n
the b rake ro to rs or i ce in the winter. The
brakes must be dried first with a few
careful brake applications.
(!;) Note
- If you wash t he vehi cle in a n automati c
car wash, yo u m ust fold the exterior m ir­
ro rs in to reduce the r is k of damage to
the mirrors. Power folding exte rior m ir ­
ro rs * must only be folded in and out us­
i ng the power folding function.
- To prevent pa int damage, do not wash
t h e ve hicle in direct sun light . -
To reduce the ris k of damage to the sur ­
face, do not use insect removing spong­
es, kitchen sponges or similar items.
- Matte finish painted veh icle compo­
nents:
- To reduce the risk of damage to the
surface, do not use polishi ng agen ts or
h a rd wax.
- Neve r use car wash cycles that apply
p rotective wax .
It can destroy the
matte fi nish effect.
- Do not plac e any stickers o r magnet ic
signs on vehicle parts pain ted w ith
matte fi nish paint. The paint cou ld be
d am aged when the stickers o r m ag nets
a re removed.
@ For the sake of the env ironment
O nly wash the ve hicl e in facili tie s sp e ci al ly
d esigne d for tha t purpose. This will re duce
the r is k of dirty wate r contam ina ted with
o il from entering the sewer system.
Cleaning and care information
When clea ning and cari ng for individua l vehi ­
cle components, refer to the following tab le .
The information contained there is simp ly rec­
ommendations. For quest ions or for compo- nents that are not listed, refer to an author­
ized Audi dea
ler or a qualified workshop . Also
fo llow the information found in c> ,& .
Cleaning exterior
Component Situation Solution
Wiper blades
Dirty <=> page 49, Cleaning windshield wiper blades
Headlights/ D irty Soft sponge wi
th a m ild soap so lutiona l
tail lights
Sensors /
Dirty Sensors: soft cloth w ith a so lvent-free cleaning product
camera lense s Camera lenses: soft cloth with an alcohol-free cleaning
so lution
Snow/ice Hand brush/so lvent-free de-icing spray
Wheels Road sa lt Water
Brake d ust Acid-free special cleaning solution
Exhaust tail Road s alt Water, deani ng sol ution suit able for stainless s teel, if
pipes necessary

Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 196 Eng ine compartment: cover on the coolant
expansion tank
Before you check anything in the engine com­
partment,
alwa ys read and hee d all W ARN­
ING S ¢.&. in Working in the engine compart­
ment on page 22
7 .
.,. Park your vehicle on a level surface.
.,. Switch off the ignit ion.
.,. Read the engine coolant level from the cool­
ant expansion tank¢
fig. 196, ¢ page 229 ,
fig. 193 .
With a cold engine, the coolant
level should be between the "min" and
"max" mar kings. When the engine is warm,
the leve l may be slightly above the "max"
marking.
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration¢
page 229 .
To obtain an accurate read ing, the eng ine
must be switched off.
The expans ion tank in you r vehicle is equipped
with an electric coolant level sensor .
When the coolant level is too low, the warning
light in the Auto -Check System ¢
page 17 will
illum inate u ntil you add coolant a nd the level
has been restored to normal. Even though
there is an electric coolant level sensor, we
still recommend you check the coolan t leve l
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cool ing
system. In the event of coolant loss, the cool-
Checkin g and fillin g 235
ing system should be inspected immediately
by your authorized Audi dealer . It is not
enough merely to add coolant.
In a
s ea led system, losses can occur on ly if
the boiling point of the coo lant is exceeded as
a result of overheating.
A WARNING
The cooling system is under pressure and
can get very hot. Reduce the risk of scald­
ing from hot coolant by follow ing these
steps.
- Turn off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escap ing f lu id and steam by cover ing the
cap with a la rge, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise d irect ion while ap­
plyi ng light, downward pressure on the
top of the cap .
- To avo id being burned, do not sp ill anti­
freeze or coolant on the exhaust system
or hot engine parts. Under certa in cond i­
tions, the ethylene gly col in engine coo l­
a nt can catch fire.
(D Note
Do not add any type of radiator leak sea L­
ant to your veh icle's engine coo lant . Add­
i ng radiato r repa ir flui d may adverse ly af­
fect the funct io n and performa nce o f your
cooling system and could result in damage
not covered by your New Vehicle Limited
War ranty.
Adding coolant
Be very careful when adding engine coolant .
Before you che ck anyth ing in the eng ine com­
partmen t,
alway s read and heed all WARN­
INGS ¢.&_ in Working in the engine compart­
ment on page
227 .
.,. Tur n off the engi ne.
.,. Let the engine cool down.

262 Tires and wheels
remain continuously illuminated. This se­
quence will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
When the malfunction indicator is ill uminat­
ed, the system may not be able to detect or
signal low tire pressure as intended . TPMS
malfunctions may occur for a variety of rea­
sons , including the installat ion of replace­
ment or alternate tires or wheels on the vehi­
cle that prevent the TPMS from funct ioning
properly . Always check the TPMS malfunction
tellta le after replacing one or more t ires or
wheels on your veh icle to ensure that the re­
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
Tire pressure indicator appears
Applies to vehicles: with tire pressure monitoring system
The tire pressure indi cator in the instrument
cluster informs you if the tire pressure is too
low or if there is a system malfunction.
Fig. 205 Display: underi nflatio n warn ing
Fig. 206 Display: System mal functio n
Using the ABS sensors, the tire pressure moni­
toring system compares the t ire tread circum­
ference and vibration characteris tics of the in­
dividual tires. If the pressure decreases in one
or more tires, this is indicated in the i nstru- ment
cluster with a warning symbol
RE and a
message
c:> fig. 205 .
The tire pressure monitoring system must be
reset via MMI each time the p ress ures are ad­
justed (e.g . when switching between partial
and full load pressure) or after changing or re­
plac ing a tire on your vehicle
c:> page 263 . The
TPMS indicator only monitors the tire pres­
sure that you have previously stored. You can
find the recommended tire pressures for your
vehicle on the Label on dr iver's side 8-pillar
<=:>page 247 .
Tire tread circumference and vibrat ion charac­
teristics can change and cause a tire pressure
wa rning if:
- the t ire pressure in one or more tires is too
low,
- the tire has structural damage,
- the tire pressure was changed, wheels rotat -
ed or replaced but the TPMS was not reset
<=:> page 263.
Warning symbols
RE Lo ss of pressure in at least one tire c:> .&..
Check the tire or tires and replace or repair if
necessary. The indicator light
RE in the instru­
ment cluster also illuminates
c:> page 12 .
Check/correct the pressures of all four tires
and reset TPMS via MMI.
film (T ire Pressure Monitor ing System) Tire
pressure! System malfunction .
If film appears after switching the ignition on
or while dr iving
c:> fig. 206 and the indicator
light
[ti] in the instrument cluster blinks for
approximately one minute and then stays on,
there is a system malfunction .
Attempt to store the correct tire pressu re
<=:> page 263 . If the indicator light does not
turn off or if it turns on shortly thereafter, im­
mediately drive your vehicle to an author ized
Audi dealer or authorized repair facility to
have the malfunct ion corrected .

No. Equ ipment Amps
4 Suspension control system sen-s sor
s
E
lectronic Stabilization Cont rol
s (ESC) module
6 Climate control
s
7 Adaptive cruise control
10
8
Airbag control module, front
s passenger's seat sensor system
9 Gateway
s
Homelink (garage door opener),
10 night vis ion system cont ro l
s
module
11 Image
processing (active lane
10
ass ist, adaptive cruise control)
12 Dynamic steering
s
13 Terminal 15 in
the instrument
15
panel
14 Terminal 15
in the luggage com-
partment 30
15 Terminal 15
(engine)
15
16 Starter 40
Fu se pa nel ® (b rown )
No . Equipment Amps
1 Gateway s
2 C
limate control 10
3 E
lectronic Stabili zation Control
10
(ESC) module
4 Fron
t door (driver 's side)
30
s
Power seat adjustment (driver's
7,5
seat)
6 Dynam
ic steering
35
7 Sunroof 20
8
Rear door control module (driv-
15
er 's side)
9 Lumbar support (
Front passen-
s ger seat)
10 Tire pressure
monitoring system
s
11 Su
nroof, rear spoi ler (Sportba ck)
20
12 Driver
door control module
15
Fuse s and bulb s 2 7 3
Fuse pan el© (r e d )
No . Equipment
2 Fuel pump
3 Brake light
sensor/brake pedal
sensor system
AdBlue control module (Diesel)/
4 Engine acoust ics
s Left rear door cont rol modu le
6 Power seat adjustment
(pas-
senge r's seat)
7 Horn
8 Windshield wiper motor
9 Light/rain sensor, heater
for vid-
eo camera in windscreen
10 Lumba r support (driver seat)
11 Front
passenger door control
modu le
12 Right rea r door cont rol modu le
Front passenger side cockpit fuse
assignment Amp
s
25
S/S
S/7,S 30
7,5 15
30
s
s
15
15
F ig . 22 0 Front passenger side cockpit: fuse pa nel w it h
plast ic brac ket
Fuse panel @ (bla ck)
No . Equipment Amps
1 Head-up
Display s
2 MMI Display s
3 CD/DVD changer s
4 MMI unit/drives 7,5
s
Chip card reader (not in all coun-
s tries)
6 Instrument
cluster
s
7 Steering column switch module s ...

29 4 Index
Start -Stop -System . . . . . . . . . . . . . . . . . . 81
starting .... ... . ...... ... .. .. .... .. 76
Starting with jumper cab les .. .. .. .. . 276
Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . 77
E ng ine compartmen t ... .... .. .. .... . 229
C losing the hood . ..... ... .. .. .... . 228
Opening the hood ..... ... .. .. .... . 227
Safety instructions ..... ... .. .. .... . 227
Working in the engine compartment . . 227
E ng ine coolan t ... .. ... .... .. .. .. .. . 234
Adding coolant . .. ..... ... .. .. .... . 235
Checking the engine coolant leve l .. .. . 235
Expansion tank . .. ..... ... .. .. .... . 235
M alfunct ion symbo l . . . . . . . . . . . . . . . . . 17
Radi ator f an .... ... .. ...... .. .. .. . 236
T emperature gauge ........ .... ..... 11
Eng ine oil ... ... .. ..... ... .. .. .... . 229
Adding .... ... . ...... ... .. .. .... . 232
Addit ives . .... .... .... ....... .. .. . 232
Ch ang ing .. .... .. ... .. .. .. .. .. ... 233
Check ing the eng ine o il level .. .. .... . 232
Ind ications and cond it ions req uiring ex -
tra checking .................. .... 232
I nd icator light . . . . . . . . . . . . . . . . . . . . . 18
O il cons umption . .. ... .... .. .. .. .. . 23 1
O il grades .... .... .... ... .... .. .. . 229
P ressu re mal function . ... .. .. ... ... .. 18
Recomm ended oil check int ervals . ... . 232
Sensor def ective . . . . . . . . . . . . . . . . . . . . 22
Specification and viscos ity .. .. .. .... . 229
E ng ine sound ...... ....... .. .. .. .. . 102
Eng ine speed limitat ion ...... ... .. .... 22
Engin e start-stop mode
refer to Start-Stop-System . .. .. .. .. . . 83
E ng ine start sys tem (ind icator lights) .. . . 18
E nv ironment
Break- in period .............. ... ... 204
Cata lytic conve rter ........... ... ... 205
Di ese l pa rticul ate fi lter .. .. .. .. .. .. . 205
Di sp osing of yo ur vehicle batte ry .. ... 24 1
D riving a t high speeds ... .. .. .. .... . 20 7
D riving to minimize pollu tion and noise 206
Fu el . .... .. ... .. ..... ... .. .. .... . 221
Fue l economy ... .. ... .... .. .. .. .. . 206
Leaks unde r your veh icle ..... .. .... . 227
Le tting the ve hicle stand and warm up . 207
Prope r disposal of dra ined brake flu id . 23 7 Proper disposal of d
rained eng ine cool -
ant . ... .. .... .. .. ... ..... ... .. .. 235
Proper d isposal of d rained eng ine
o il . . . . . . . . . . . . . . . . . . . . . . . . . 232, 233
Recycling used engine oil . ....... .... 232
U nleaded fuel .. .. ................ . 218
What s hould I do with an old battery? . 241
Event Data Recorde r (EDR) . . . . . . . . . . . . 196
E xhaus t tai l pipes
C leaning .. .. .. . .......... ... ... .. 214
Expansion tank .. .. .......... ...... . 235
Exterior lighting ... .. ... ..... ... .. .. . 44
E xte rior mi rrors
Adjus ting . .. .. .. .. .... .... ....... . SO
D imming . ..... .. .. ... ..... ... .. .. . 51
Heating ... .... .. ... .. ..... .... . .. . SO
E xterior tempera ture display ........... 24
F
Fastening
Booster seats . . . . . . . . . . . . . . . . . . . . . 184
Co nvertib le child safety seats ........ 182
I n fan t seats . .. .. ....... ...... .... 181
Floor mats .. .. .. .. ...... ....... .... 135
F oot peda ls ..... .. .. ... ..... ... .. .. 135
Fo r the sake of the environment
Gasoli ne fumes and the env ironme nt .. 221
Red ucing engine noise by early upshift-
i ng ....... .. .. .. .. ............... . 11
Ref ueling ..... .. ... .. ..... .... . .. 221
Saving f uel by early ups hifting ... .. .. . 11
Fo ur-zone automatic climate control . .. . 72
Front a irbags
Descrip tion .. .. . .. ........ ... ..... 153
How they work . .. .......... ...... . 159
Frontal col lisions and the laws of p hysics 141
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 53
Adjus ting . .. .. .. ........... .. .. .. 132
C hild rest rain ts in the front seat . ... .. 151
Fuel Additives ...... .. ..... ........... . 218
B lended gaso line ........ .... ...... 218
Cur rent co nsumption .... ....... .... . 25
E conomy messages (e fficiency p rogram) 2 7
Fuel fi lle r flap emergency release ... .. 223
Fuel fi ller neck ... .. .... .... ... .. .. 220
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12

296 Index
Jumper cables ..... ....... ... .. .... . 277
K
Key ... .. .. .. .. . .. ..... ... .. .. .. .. .. 32
Battery replacement master key ... .. .. 33
Emergency key ... ... .... ... .. .... .. 32
K ey not recogn ized . . . . . . . . . . . . . . . . . . 78
Key replacement .... ....... .. .. .. ..
32
M as ter key ..... .. .... ... .. .. .. .. .. 32
Mech an ic a l key .... .. ..... .... .. .. .. 33
Valet key . .. ................ ... .... 32
Kick-down
t ipt ron ic
113
Knee airbags ... .... .... ..... .. .. .. . 166
Description ..... .. ... .... .. .. .. .. . 166
How they work ............ ... .... . 168
Important saf ety instructions ..... .. . 168
L
Lane assist . . . . . . . . . . . . . . . . . . . . . . . . . 95
L ane Change Ass istant
refer to side assist . . . . . . . . . . . . . . . . . . 98
LATCH .. .. .. .... .. ... ...... .. .. .. . 189
Desc rip tion ....... .... ..... .. .. .. .
Installin g a child restraint .. .. .. .. .. .
Location
Mounting and releasing the anchorage
hook
. . .. ...... .. .... ... .. .. .. .. .
190
191
190
191
La unch Con trol Prog ram .... .. .. .... . 114
Leath er clean ing/protection ....... .. . 216
Leaving home .......... ....... .. .... 46
Lifting jack ...... .. .... ... .. .. .. .. . 268
L ift ing vehicle
Light 280
Ambience lighting ............ .. .... 47
Com ing/Leaving home ..... .. .. .. .. . .
46
Daytime running lights .... .. .. .. .. . . 44
Emergency flashers ....... .. .. .. .. .. 45
Exterior lighting . ...... ... .. .. .. .. .. 44
H eadlight range control ....... .. .. .. 44
H igh b eam ............... ... .... ..
46
Low beam . ................ .. .... .. 44
Rea r fog ligh ts .. ...... ..... .. .. .. .. 44
S ide marker ligh ts ........ .. .. .... .. 44
T urn signals ................. .. ....
46
Light/rain sensor
Headlights . ..... .................. 44
I ntermittent (windshield w ipers) ...... 48
Sen sor defective . . . . . . . . . . . . . . . . . . . .
23
Loading the roof rack ... .. .... ... .... . 63
Locking
Power locking switch ................
37
Remot e control .. ... .. ..... ... .. .. . 35
Using the key .. .. ...... ....... .... .
37
Low be ams . .. .. .. ... .. ..... ... .. .. . 44
Lower un iv e rsal anchorag es (Canada) . . .
189
Luggage compartment
Bag hooks . .. .. . .. ... ... ... .. ... .. . 67
Cargo net . . . . . . . . . . . . . . . . . . . . . . . . .
66
carpeting ..... .. .................. 67
Cover ......... .. ............. ..... 64
Enlarging . . . . . . . . . . . . . . . . . . . . . . . . . 65
Load ing ... .. .. .. ...... .. .... ..... . 64
Ski sack ... .. .. .. ...... .. .... ..... . 67
S towing lugg age . .... ...... ... ....
136
T ie -downs . . . . . . . . . . . . . . . . . . . . . . . . . 66
Trunk pass-through ..... ......... .. . 68
Luggage compa rtment lid
Movement-ac tivated opening .. .. .. .. . 40
Lumbar support
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 55
M
Maintenance .. .. .. ...... ....... .. .. 285
Malfun ction Indicator Lamp (M IL) . .
21, 30
Manua l shift p rogram ................ 113
Massage function
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 55
Ma tte fini sh pa in t cle aning .. ....... ..
213
Mechanica l key .... ................ .. 33
Mirrors Adjusting the exterior mirrors . . . . . . . . . SO
d' . 1mmrng .. .. .. .. .... ...... ... .. .. . 51
Vanity mirrors ... .................. 48
Monitoring the Advanced Airbag System 161
Mul tifunction stee ring wheel ....... ... . 25
N
Natura l leather
Cl ean ing
216
New tir es and wheels ... ...... ... .. .. 254