A4 allroad quattro Audi S4 Saloon

102 Technology, Audi Extended Warranty
The model-specific standard and optional equipment can be found in the index from page 122 onwards.
Technology/safety
Instrument cluster
with adjustable lighting, electronic speedometer
with odometer and trip odometer, radio-controlled
clock (GPS clock in conjunction with MMI navigation
plus), coolant temperature display and fuel gauge;
S4 Saloon/S4 Avant: with S-specific grey dials, white
needles and S4 logo in the rev counter and automatic
ready-check when engine starts
Safety steering column
includes a shunt mechanism with damping function to
supplement the protection offered by the seat belts
and airbags
First-aid kit
in the storage compartment in the centre armrest, rear
Warning triangle
with bracket on the inside of the luggage compartment
lid
Anti-Slip Regulation (ASR)
for improved traction, reduces spinning
of the drive wheels
Electronic Differential Lock (EDL)
On surfaces with varying levels of grip, this start-off
assistant automatically brakes the drive wheels
on any surface that is too slippery, thereby ensuring
smooth, powerful progress; operates at speeds up to
approx. 100 km/h.
Electronic Stabilisation Control (ESC)
networks the ABS, EBD, ASR and EDL with its own
sensors and compares the driving data with reference
data; provides better stability at all speeds by targeted
braking of individual wheels and intervention in the
engine management system
ESC with electronic axle-differential lock
The electronic axle-differential lock function is
integrated in the ESC on front-wheel drive models.
It distributes the drive torque by means of targeted
braking actions, depending on the driving situation.
The axle-differential lock actively countersteers in
corners. The result is improved traction and dynamic
performance when cornering and more precise and
neutral handling (less understeer). Agility during
steering is also improved.
Electromechanical power steering
maintenance-free rack & pinion steering with
speed-dependent power steering; precise steering feel
at high speeds, excellent assistance when parking
Dynamic steering
when changing lanes, parking and cornering, this
system improves comfort and handling by dynamically
regulating steering according to the driving situation.
In addition to adaptation of the steering effort (as
with the electromechanical power steering), the
steering angle is also adapted (steering ratio). The
system is also supported further by vehicle stabilisation
through ESC.
6-speed manual transmission
all-synchromesh, hydraulically-actuated dry clutch
with asbestos-free linings, 2-mass flywheel
multitronic®
the multitronic generation of continuously variable
transmissions, featuring dynamic gear control
program (DCP) and sport program, 8 different gears
can be selected in manual mode, hydraulically
controlled multi-plate clutch
Body, galvanised
fully galvanised in areas at risk from corrosion, unitary
construction, welded to the floor pan, front and rear
areas feature defined crumple zones. (12 year guaran-
tee against rust perforation)
Airbags
full-size airbags for driver and front passenger; includ-
ing deactivation switch for front-passenger airbag
in conjunction with ISOFIX child seat mounting for
front-passenger seat
Side airbags, front, and head airbag system
side airbags, front, integrated into the seat backrests;
with additional head airbag system; deploys over the
side windows to protect the front and outer rear seat
passengers in the event of a side impact
Side airbags, rear
supplement the side airbags, front, and the head
airbag system
Integrated head restraint system
In the case of a rear-end collision, the shape of the
front seat better restrains the upper body and provides
more support for the head than conventional systems.
This increases the level of protection and reduces the
risk of a whiplash injury.
Seat belts
3-point inertia reel seat belts for all seats, with belt
force limiters, seat belt tensioners and front seat-belt
reminder; colour-coordinated with the interior
S line sport suspension
with more dynamic suspension tuning and vehicle
lowered by a further 10 mm compared with sport
suspension
S sport suspension
with stiffer spring and damper tuning for more direct
contact with the road and sporty handling; 5-link
lightweight front axle, tubular anti-roll bar,
trapezoidal-link rear axle with independent wheel
suspension; twin-tube gas filled shock absorbers and
coil springs, front axle carrier rigidly fixed to the body,
flexibly mounted axle supports at rear
Brake system
dual-circuit with diagonally-split brake system,
Antilock Brake System (ABS) with Electronic Brake
Force Distribution (EBD), Electronic Stabilisation
Control (ESC) with brake assist, tandem brake booster,
disc brakes front/rear, ventilated at front
Brake callipers
in S4 Saloon/S4 Avant painted in black,
at the front with S4 emblem
Electromechanical parking brake
includes parking brake function when stationary,
drive-off assistance function by means of automatic
release when driving away and emergency braking
function whilst driving by means of action on all
4wheels
Suspension/brakes
A4_Det18_2013_03.indd 102 19.04.13 11:13