height AUDI S4 SEDAN 2013 User Guide

driving a few yards and correct if neces­
sary . Follow the instructions from the
snow cha in manufacturer when doing so.
(D Tips
Where snow chains are mandatory oncer ­
tain roads, this norma lly also applies to
veh icles with all wheel drive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque.
The design o f whee l bolts is matched to the
factory insta lled r ims . If different rims are fit ­
ted, the correct wheel bo lts wit h the right
l ength and correctly shaped bolt heads must
be used. This ensures that wheels are f itted
securely and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bo lts from a different vehicle -even if it
is the same model
<=> page 274.
A WARNING
Improperly tightened or maintained wheel
bolts can become loose caus ing loss of
cont ro l, a co llision and serious persona l in­
Jury .
- Always keep the w heel bolts and the
threads in the wheel hubs clea n so the
w hee l bolts can t urn easily and be p rop­
erly t igh tened.
- Never grease or oil the wheel bolts and
the threads in the wheel h ubs. They can
become loose wh ile d riving if greased or
oiled, even if tightened to the specified
torq ue.
- Only use whee l bo lts that belong to the
rim being installed .
- Never use different whee ls bolts on your
vehicle.
- Alw ays m ain ta in the co rrec t tig hten ing
torq ue fo r the wheel bo lts to reduce the
risk of a wheel loss . If the tightening tor­
que of the wheel bo lts is too low, they
can loosen and come out when the vehi-
Tire s an d wheel s 24 7
cle is mov ing. If the tightening torq ue is
too high, the wheel bolts and threads
can be damaged and the whee l can be­
come loose.
@ Note
The specified torque for the whee l bolts is
90 ft lbs . (120 Nm) w ith a tolerance of
± 7,4 ft lbs. (± 10 Nm). Torque whee l bolts
diagonally . After changi ng a wheel, the
torque m ust be checked as soon as poss i­
ble with a to rque wrench -preferably by an
a uthorized Aud i dea le r or qualified wor k­
shop.
Low aspect ratio tires
Your A udi is fac tory -eq uipped w ith low aspect
ratio tires . These tires have been tho ro ughly
tested and been se lected specifically for your
model for their superb performance, road fee l
and handling under a variety of driving condi­
tions . Ask your authorized Aud i dealer for
more details.
The low aspect ratio of these t ires is ind icated
by a numeral of
55 or less in the tire's size
designation. The numera l represents the ratio
of the tire's sidewa ll height in relation to its
tread width exp ressed in percentage. Conven­
tiona l tires have a he ight/w idth ratio of 60 or
more.
The performance of low-a spect-r atio tire s is
particularly sensit ive to improper inflation
pre ssure. It is therefor e important that low
a spect ratio tire s are inflated to the specified
pres sure and that th e inflation pr essure i s
regularly checked and maintained. Tire pre s­
sure s should be chec ked at lea st once a
month and always before a long trip
<=> page 236, Checking tire pressure.
What you can do to avo id tire and rim
damage
Low aspect ratio tires can be damaged mo re
easily by impact w ith potholes, curbs, gull ies
or ridges on the road, particularly if the tire is
under inflated . ..,.
•
•

286 Index
Reverse gear S tronic transmission . ... .. .. ... ... .. 90
R ight hand d rive ........... .... .... .. 46
R ims
Cast alloy .. ... . ...... ... .. .. .. .. . 204
Roof rac k . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Roof load . . . . . . . . . . . . . . . . . . . . . . . . . 64
Roof weight . . . . . . . . . . . . . . . . . . . . . . . 64
s
SA FE ..... .. ... .. ..... ... .. .. .... .. 12
Safe driving hab its ...... ... .. .. .. .. . 126
Safety belt position . . . . . . . . . . . . . . . . . 140
Safety belt he ight adjustment .. .... . 142
Safety belts worn by pregnant women . 141
Safety belt pretensioner ... .. .. .. .... . 142
Service and disposal . . . . . . . . . . . . . . . 143
Safety belts .... ........... .. .. .... . 139
C leaning . .. ............. .... .. .. . 208
D anger to passengers who do not wea r a
safety be lt . . . . . . . . . . . . . . . . . . . . . . . 13 7
Fastening .... ........... .. .. .... . 139
Height adjustment ........ .. .. .. .. . 142
Improperly worn . . . . . . . . . . . . . . . . . . 142
Not worn .. .................. .... 137
Safety belt position ........ ... .. .. . 140
Safety instructions . . . . . . . . . . . . . . . . . 139
Secur ing c hild safety sea ts . .. .. .. ... 175
Speci al consider ations fo r pregnant
women . ... .. .. ...... ... .. .. .... . 141
Unfasten ing . .. .. ..... ... .. .. .... . 141
Warning/ indicato r light . ... .. .. .. .. . 136
Warn ing light . ........... .. .. .... .. 17
WhyYOU M USTwearthem . .. .. .. ... 136
Worn properly ............. .. .... . 138
Safety belt warning light . ... .. .. .... . 13 6
Safety compliance st icker . ...... .. .. . 268
Safety equipment ............ .. .... . 126
Safety fe atures for o ccup ant restra int and
p rotec tion ... ... .. ..... ... .. .. .... . 12 6
Safety guidel ines
Seats .. .. .. ........ ..... .. ........ S4
Safety instructions Eng ine compartment ...... .. .. .. .. . 215
for side curtain a irbags .. .. .. .. .. .. . 164
for us ing chi ld safety seats ..... .. ... 168 f
o r using sa fe ty belts . .. ..... ... .. .. 139
Monito ring the Advanced Airbag Sys-
tem . ... .. .. .. .. .. ... .. ..... ... .. 157
Seat adjustment He ad restra ints .. ............. .... 130
Seat belts
refer to Safety belts ............... . 136
Seat heating ...... ............. .... . 70
Se ating c apac ity . .. ... .......... .. .. 136
Seating pos ition
D rive r ... ... .. .. .. ... ... ... .. .. .. 127
Front passeng er .. .......... ...... . 128
How to ad just the fron t seats .. .. .. .. 1 28
Incor re ct sea t position .......... .. .. 130
Occ upan ts ..... .. ... .. ..... ... .. .. 12 7
Rear passengers . .... .. ..... .... . .. 129
Seat memory . . . . . . . . . . . . . . . . . . . . . . . 58
Seats Adjusting . . . . . . . . . . . . . . . . . . . . . 5S, 56
Driver's seat . . . . . . . . . . . . . . . . . . . . . . . 54
Folding ....... .. .. ... ....... ... .. . 64
Front passenger's seat . . . . . . . . . . . . . . . 5S
Head restra ints .. ... .......... .. .. . 57
N umber of sea ts . ............. .. .. 136
Sa fe ty g uid elines ................ .. . 54
Se lective unlock feature . . . . . . . . . . . . . . . 3 7
Se lector lever ..... .. ... ..... ... .. .. . 8S
Emergency re lease . . . . . . . . . . . . . . 89, 9S
Se lector lever d isp lay . ........... .. .. . 90
Se lector lever emergency release ...... . 9S
Se rvice and disposa l
Safety be lt pretensioner . . . . . . . . . . . . 143
Se rv ice interv al d is play . . . . . . . . . . . . . . . . 29
SET button . . . . . . . . . . . . . . . . . . . . . . . . . 11
S hi ft indicato r (efficiency program) ... .. . 28
S ide a irbags
Des cription ...... ............. .... 159
How they wor k ... ............. .... 161
s ide ass ist
Adjus ting the b rightness . ........... 109
Senso r range .. .. ................ . 108
S ide assist
Activati ng and deactivating .... .. .. .. 109
Cleaning sensors .... .. .. ... ..... .. 201
Desc ription .. .. .. .......... ... ... . 107