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Transmission S tronic
Introduction
The automat ic transm iss ion is controlled elec
tronically. The transmiss ion upshifts or down
shifts automatically depend ing on which drive
p rogram is se lected.
When a
moderate driving sty le is used, the
transmission selects the most econom ica l
d riving mode.
It w ill then change up early and
de lay the downshifts to g ive better f uel econ
omy .
The transmis sion swi tches to a sporty mode
after a k ick-down or when the dr iver uses a
sporty driving sty le characterized by quick ac
celerator peda l movements, heavy accelera
tion, frequent changes in speed and traveling
at the maximum speed.
If desired, the drive r can a lso se lect the gears
manually ( tiptronic mode ) ~ page 87.
The S tronic is a dual-clut ch tra nsmission.
P ower is transfe rred using two clutches that
work independently from one another . They
rep lace the torq ue converter used in conven
tional automatic transmiss ions and allow the
vehicle to accelerate without a noticeable in
terruption in traction.
Selector lever positions
F ig. 96 Display in the instrument cluster: se lector lever
in pos itio n P
The selector lever position engaged appears
n ext to the selector leve r as well as in the in
strument cluster display.
Tran sm iss ion 83
P -Park
In this se lector lever posi tion the transm is
s ion is mechanica lly locked. Engage P on ly
when the vehicle is
completely stopped~&.
in Driving the automatic transmission on
page 85.
T o shift in or out of pos it ion P, yo u must first
press and ho ld the brake pedal and then press
the re lease button in the selector leve r hand le
whi le moving the selector lever to or from P.
You can shift out of this position only with the ignition o n.
R - Reverse
Se lect R on ly when the veh icle is at a full stop
and t he engine is running at idle speed~.&. in
Driving the automatic transmission on
page 85.
Before you move the se lector lever to R, press
both the re lease button in the hand le o f the
selector lever
and the brake pedal at the same
time.
When the ignition is on, the backup lights illu
minate when the selector lever is moved into
R.
N -Neutral
The transmiss ion is in neu tral in this pos ition .
S hift to t his position fo r standing with the
brakes app lied
~ .&. in Driving the automatic
transmission on page 85.
When the vehicle is stat iona ry or a t speeds
below 1 mph (2 km/h), yo u must always app ly
the footbrake before and whi le mov ing the
l ever o ut of
N.
DIS -Normal posit ion for driving forward
In the D/S pos it ion, t he tr ansmission c an be
operated either in the norma l mode D or in
the sport mode S . To select the sport mode S,
pull the selector lever back briefly. P ulling the
l ever back again will se lect the norma l mode
D. The instr ument cluster disp lay shows the
selected driving mode. ..,_
86 Transmission
-Unintended vehicle movement can cause
serious injury .
- Never leave your vehicle with the engine
running while in gear. If you must leave
your vehicle when the engine is running,
activate the parking brake and move the
selector lever to P .
- Power is still transmitted to the wheels
when the engine is running at idle. To
prevent the vehicle from "creeping", you
must keep your foot on the brake when
the engine is running and the selector
lever is in D/S or R or "tiptronic" mode is
selected.
- Do not press the accelerator pedal when
changing the selector lever position
while the vehicle is stationary and the
engine is running.
- Never shift into
R or P while driving.
- Before driving down a steep slope, re-
duce your speed and shift into a lower
gear with "tiptronic".
- Do not ride the brakes or press the brake
pedal too often or too long when driving
down a hill. Constant braking causes the
brakes to overheat and substantially re
duces braking performance, increases
braking distance or causes complete fail
ure of the brake system.
- To prevent the vehicle from rolling back
when stopping on inclines, always hold it
in place with the brake pedal or parking
brake .
- Never hold the vehicle on an incline with
a slipping clutch . The clutch opens auto
matically when it becomes too hot from
the overload . An indicator lamp
l'§J illu
minates and a driver message appears
Q page 88 when the clutch is overload
ed.
- If the engine must remain running, never
have any driving position engaged when
checking under the hood. Make sure the
selector lever has securely engaged and
is locked in P with the parking brake set
Q page 195. Otherwise, any increase in
engine speed may set the vehicle in mo- tion
, even with the parking brake ap
plied.
@ Note
- When stopping on an incline, do not try
to hold the vehicle in place by pressing
the accelerator pedal while a driving gear is selected. This can cause the transmis
sion to overheat and can damage it. Acti
vate the parking brake or press the brake
pedal to prevent the vehicle from rolling .
- Allowing the vehicle to roll when the en
gine is stopped and the selector lever is
in N will damage the transmission be
cause it is not lubricated under those cir
cumstances.
(D Tips
For safety reasons, the parking brake is re
leased automatically only when the driv
er's safety belt is engaged in the buckle.
Hill descent control
The hill descent control system assists the
driver when driving down declines.
Hill descent control is activated when these
lector lever is in D/S and you press the brake
pedal. The transmission automatically selects
a gear that is suitable for the incline. Hill de
scent control tries to maintain the speed ach
ieved at the time of braking, within physical
and technical limitations. It may st ill be nec
essary to adjust the speed with the brakes.
Hill descent control switches off once the de
cline levels out or you press the accelerator
pedal.
On vehicles with the cruise control system*
Q page 81 , hill descent control is also activat
ed when the speed is set.
A WARNING -
Hill descent control cannot overcome
physical limitations, so it may not be able
to maintain a constant speed under all
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pressure relie f valve in the cap when the en
gine becomes hot.
A WARNING
- The cooling system is under pressure and
can get very hot. Reduce the risk of
sca lding from hot coolant by following
these steps .
- T urn off the engine and a llow it to cool
down.
- Protect your face, hands and arms from
escap ing flu id and steam by cover ing
the cap with a large, thick rag.
- Tu rn the cap slowly and very ca refully
in a counte r-clockw ise d irection while
applying light, downward p ress ure on
the top of the cap.
- To avo id being burned, do not sp ill an
tifreeze or coolant on the exhaust sys
tem or hot engine parts. Under certain
conditions, the ethylene glyco l in en
g ine coolant can catch f ire.
- Antifreeze is poisonous. Always store an
t ifreeze in its or iginal container and we ll
out of the reach of children.
- If you drain the coolant, it must be
caught and safely stored in a proper con
tainer clear ly marked "poison".
Q) Note
- Do not add any type of radiator leak sea l
ant to your veh icle's engine coolant.
Adding rad iator repair fluid may adverse
l y affect the function and performance of
you r cooling system and could result in
damage not covered by your New Vehicle Limited Wa rra nty.
- Coolant pollutes the env ironment and
could cause an engine fire. Excess coo l
ant w ill be forced ou t through the pres
su re re lief va lve in the cap when the en
gine becomes hot .
- If, in an emergency, only water can be
added, t he cor rect ratio between wate r
and an tifreeze<=> page 201 must be re
stored as soon as possib le .
Checkin g and fillin g 203
'
@) For the sake of the environment
Drained coolant sho uld not be reused. A l
ways d ispose of used coolant while observ
i ng a ll environmental regulations.
Radiator fan
The radiator fan switches on automatically by
itself .
T he radiator fan is dr iven by the engine via the
V-belt. The viscous clutch regulates the speed
of the fan according to the temperature of the coolant.
An a uxiliary electric radiator fan* switches on
and off depending on coolant temperature
and othe r vehicle ope rat ing cond it ions.
After yo u switch the eng ine off, the aux iliary
f an can continue running for up to 10 m inutes
- even with the ignition off. It can even switch
on again later by itself<=>.&. , if
- t he temperatu re of the engine coo lant rises
due to the heat build -up from the engine in
the engine compa rtment, or
- the engine compa rtment heats up because
the vehicle is parked in intense sunlight.
A WARNING
=
- To reduce the risk of personal inju ry nev-
er touch the radiator fan.
- The a uxiliary electric fan is tempe rat ure
contro lled and can switch on suddenly
even when the engine is not running.
- The a uxiliary radiator fan switches on a u
tomatically when the engine coo lant
reaches a certain temperature and will
continue to run until the coo lant temper
ature drops.
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No. Consumer
A/C system pressure sensor,
electromechanical parking
brake, Homelink, automatic
3 dimming interior rear view
m
irror, air quality/outside
air sensor, Electronic Stab ili-
zation Control (button)
5 Sound
actuator
6 Headlight
range cont rol/
head light (cornering light)
7 Headlight (corner
ing light)
Contro l modu les (e lectro-
8 mechanical parking brake,
shock absorber, quattro
sport), DCDC converter
9 Adaptive cru ise contro l
10 Shift gate/clutch
sensor
1 1 Side ass ist
1 2 Headlight range
control,
park ing system
13 Airbag
14 Rear wiper (allroad)
1 5 Auxi
liary fuse (instrument
pane l)
16 Aux
iliary fuse terminal 15
(engine area)
Fuse p anel @ (brown )
No. Con sumer
2 Brake light sensor
3 Fuel
pump
4 Clutc h sensor
5 Left
seat heating with/w ith-
out seat vent ilation
6 Electronic Stab
il iz at ion Con-
tro l (e lectric)
7 Horn
Front left door (window reg-
8 ulator, centra
l locking, mir-
ror, switch, lighting)
9 Winds hield wipe r motor
1 0 Electronic
Stabilizat ion Con-
trol (valves)
Fuses and bulb s 251
Amp s No. Consumer Amps
•
Two-door models: rear left
• window regulator; Four-
11 door models:
rear left door
30
5 (window regulator, central
lock
ing, switch, lighting)
12 Rain and light sensor
5
5
Fuse pan el© (r e d )
5/7,5 No . Consumer Amps
3 Lumbar support 10
7,5 4 Dynamic steering 35
s Interior lighting (Cabriolet)
5
5 6 W
indshield washer system,
35
h eadlight washe r system
5 7 Vehicle electrical
system
20
control module 1
5
5
8
Vehicle e lectr ica l system
30
control module 1
5 9 Left rear window regulator
7,5/20
motor (Cabriolet)/sunroof
5
15 10 Vehicle e
lectrical system
30
control module 1
10 11 R
ight rea r window regulato r
7,5/20
(Cabriolet)/sun shade motor
40 12 Anti-theft
alarm warning
5
system
Amps
5
25 5
15/30
5
15
30
30
25