2013 AUDI S4 change time

236 Tires and wheels
Groove
means the sp ace between two ad jacent tread
ribs .
Load rating (code )
means the maximum load that a tire is rated
to carry fo r a g iven inflat ion pressu re. You
may not find this in fo rmat io n on all t ires be­
c a use i t is no t re quir ed by law.
Maximum load rating
means the load rating for a t ire at the max i­
mum permissible inflation pressure for that
tire.
Maximum loaded vehicle weight
means t he sum of:
(a) Curb weig ht
(b) Accessory weight
( c ) Vehicle c apa city we ight, and
(d) Prod uction opt ions we ight
Maximum (permissible) inflation pressure
means t he maximum co ld inflation pressure
to which a tire may be inflated . Also called
"maxim um infla tion p ressu re ."
Normal occupant weight
means 150 lbs. (68 k ilog rams) times the
n umber of occupants seated in the vehicle up
to the tota l seating capacity of yo ur vehicle .
Occupant distribution
means dist ribution o f occ upants in a veh icle.
Outer diameter
means t he overa ll diamete r of a n inflated new
tire.
Overall w idth
means the linea r distance between the exter i­
ors of the sidewalls of an inflated tire, includ ­
ing e levations due to labeli ng, decorations, or
p rotectiv e bands o r ribs .
Ply
means a layer of rubber-coated para llel cords.
Production options weight
me ans the com bine d we igh t of tho se ins tall ed
regular prod uction opt ions we ighing over 5
lb s. (2 .3 kg) in excess of those stan da rd item s
which they replace, not previously considered
in curb weight or accessory we ight, including
heavy duty brakes, ride levelers , roof rack ,
heavy duty battery, and special tr im .
Radial ply tire
means a pneumat ic tire in wh ich the ply cords
t h at exte nd t o the beads are laid at substa n­
t ia lly 90 deg rees to the center line of the
tread .
Recommended inflation pressure
see<=> page 235, Cold tire inflation pressure.
Reinforced tire
means a t ire des ign to operat e at h igher loads
and a t higher in flation pressures than t he cor­
re spondi ng s tand ard tire. Reinfor ce d tires
may be iden tifie d as "X L" "xl" "E X TRA LOAD"
' ' '
or "RF " on the sidewa ll.
Rim
means a metal s upport for a ti re or a tire and
tube assembly upon whi ch t he tire bea ds are
sea ted.
Rim diameter
means nom inal d iameter of the bead seat. If
you change your wh eel s ize, you wi ll have to
purchase new ti res to match the new r im di­
ameter.
Rim size designation
means r im diameter and width .
Rim width
means nominal distance between rim fla nges .
Sidewall
means tha t p ort ion of a tire betwee n the
t rea d and be ad.

How are child restraint system anchors re-
l ated to child safety ................ . 180
H ow many airbags does my vehicle have? 152
How often should I check my tire pres-
sures? .. .. .. .. .. .. .. .... ... .. .. .. . 242
How safety belt pretensioners work ... . 143
H ydroplaning .............. ... ... .. 244
I
Ignition
switch ing on/off . .......... ... ... ... 80
Ignition key Emergency unlocking ...... .. .. .. .. .. 35
I gnition lock . . . . . . . . . . . . . . . . . . . . . . . . 80
I ndicator light . . . . . . . . . . . . . . . . . . . . . 18
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 23
I mmobilizer . .... ......... .... .. .. .. 12
Important things to do before driving . . 127
I mproperly worn safety be lts .......... 143
Indicator lights ...... ...... .. .. .. .. .. 13
A irbag system ... ..... ... .. .. .. .. . 156
Dynamic steering ......... .. .. .. .. . 190
PASSENGER AIR BAG OFF .. .. .. .. .. . 156
also refer to Warning/indicator lights .. 13
Infant seats . . . . . . . . . . . . . . . . . . . . . . . 172
Inflatable spare tire ........ .. .. .. .. . 257
Inflating . .. ............. .... .. .. . 258
I nstal ling ch ild safety seats
Safety belts . ............... ... ... 176
Install ing the upper tether strap on the
anchorage . .. ............. .... .. ... 183
Instruments Adjusting the lighting ..... .. .. .. .. .. 50
Instruments and controls ......... .. .. 10
General i llustration .......... ... .. ...
8
Interior lights
Fr ont .. .. .. .. .. ........... .. .. .... SO
Rear . ... .. .. ................ ..... 50
Intermittent (windshield wipers) . . . . . . . 53
J
Jump-starting ............. .... .. .. . 269
Jumper cables ................ ... ... 270
Index 291
K
Key ......... ..... .................. 33
Battery replacement . . . . . . . . . . . . . . . . 34
Check light ...... .. ................ 34
Emergency key . . . . . . . . . . . . . . . . . 33, 82
Ignition/engine on/off .............. . 80
Key replacement . . . . . . . . . . . . . . . . . . . 33
Mechanical key . . . . . . . . . . . . . . . . . 33, 34
removing . . . . . . . . . . . . . . . . . . . . . . . . . 82
unlocking/locking . . . . . . . . . . . 35, 36 , 38
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . . . 96
L
Lane Change Assistant
refer to side assist ............. .... 109
LATCH ... .. .. .. .. .... ........... .. 180
Description .. .... .. ............... 181
Installing a child restraint ......... .. 181
Location . . . . . . . . . . . . . . . . . . . . . . . . . 180
Mounting and releasing the anchorage
hook ..... .. .. .. .. .. ........... .. 181
Launch Control Program ............ .. 97
Leather .......... .. ..... ....... ... 210
Cleaning ........ .. ... ... ......... 211
Leaving home ... .. .................. 48
Left hand drive .. .. .... ........... .. . 49
Lifting jack ....... .. ... ... ......... 261
Lifting vehicle ..... .. ............... 273
Light adaptive light .. .. .. ............... . 47
Coming/Leaving home ............... 48
Daytime running lights . . . . . . . . . . 47, 48
Exterior lighting . . . . . . . . . . . . . . . . 47, 48
Fog lights/rear fog light(s) ........ .. . 47
Interior/reading . . . . . . . . . . . . . . . . . . . . SO
Low beam . .. .. .. .. ............... . 47
Rear fog lights ... .. . .. .... ........ . 47
Side marker lights .. ... ........... .. 4 7
T ravel mode ... .. .................. 49
Light/rain sensor Headlights .. .. ...... ............. . 47
Intermittent (windshield wipers) ... .. . 53
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
•
•

It has always been Audi's policy to continu­
ously improve its products. Aud i, therefore,
reserves the right to make changes in design
a nd specifications, and to make additions or
improvements in its p roducts, without incur­
ring any obl igat ion to insta ll t hem on p rod­
uc ts p revio usly man ufact ured .
Text , illustrat ions and specif ications in th is
manual are based on the most up-to-date in­
formation available at the time of p rinting.
All rights reserved. May not be reproduced or
translated in whole or in part without the wr
itten consent of AUDI AG. Specifications are
subject to change without notice.
"Audi", "q uattro" and the four r ings emblem
are registered trademarks of AUD I AG.
Editor ial de adlin e: 08 /31 /2012
@ For the sake of the environment
P rinted on environmentally friendly pape r
(b leached without chlorine, recyclable).
Printed in Germany
© 2012 AUDI AG