Driver information system
Trip computer
Introduction
The trip computer gives you information on cur
rent and average fuel mileage , average speed ,
fuel range and driving time .
Fig. 9 Trip computer d isplay: Ave rage fuel m ileage
~ 9 a: CX) m
The fo llow ing information is contin uously evalu
ated by the trip computer and can be d isplayed
sequent ia lly in the instrument cluster display:
Fuel range
The estima ted c ruising range i n miles (km) ap
pea rs in the disp lay . This te lls you how fa r your
ve hicle w ill be able to trave l on t he current ta nk
of fuel and with the same driv ing style. The d is
p lay changes in increments of 5 miles (10 km) .
The cruising range is calcu lated based on t he f ue l
consumption for the last 18 m iles (30 km). If yo u
drive conse rvative ly, the cruising range will in
crease.
Average fuel mileage
The average fuel e co nomy in MPG (l/ 100 k m)
since yo u last cleared the memory appears in this
d is pl ay. You can use this display to ad just your
driving technique to achieve a desired mileage.
Current fuel mileage
The inst antaneo us f ue l cons umption in miles per
ga llon (l/100 km) is shown in this display. Yo u
can use t his disp lay to adjust your driving techni
que to achieve a des ired mileage .
F ue l cons umption is rec alcul ated at intervals of
33 y ards (30 me ters). Th is disp lay swit ches to
ga llons/hou r (li ters/hour) when the vehicle is not
mov ing.
24
Average speed
The aver age spee d in mph (km/ h) sin ce you last
rese t the memory appears in the display .
Elapsed time
The length of time that yo u have been d riving
s ince you last reset the memory appears in this
display .
Distance
The distance that has been covered since the last
time the memory was cleared appears i n the dis
play .
0) Tips
-Fuel consumptions (average and current),
range and speed a re displayed in me tric
units on Canad ian mode ls .
- All stored val ues will be lost if the vehicle
bat tery is disconnected .
Memories
The trip computer is equipped with two fully au
tomatic memories as well as an efficiency pro
gram* .
Fig. 10 Tri p comput er di sp la y: me mory leve l 1
You can switch between the trip computer 1 and
2 and the efficiency program* by p ressing t he
I RESET I button @<=> page 25, fig. 11 .
You can tell wh ic h memory leve l is currently ac
tive by the number o r the sig n in the display
Q fig. 10. The data from the single-t rip memory
(memo ry leve l 1) is being d isplayed if a
D ap
pears in the display. If a
fJ is shown, t hen the da-
ta from the total-t rip memory is being d isp layed .,,_
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the windshield in this a rea in order to
prevent malfunctions or failures .
- Some exterior lighting functions can be ad
ju ste d
~ page 45 .
-When yo u remove your key from the igni tion
while the vehi cle's ligh ts are turned o n, a
buzzer sounds as long as t he driver 's door is
open.
- In coo l o r dam p weather, t he inside of the
h eadlights, turn sig nals and tail lights can
fog over d ue to the temperature difference
between the inside and outs ide. They will
clea r shortly after switching them on. T his
does not affect t he service li fe of the light
i ng.
- In the event of a light sensor malfunction,
the driver is not ified in the instr ume nt clus
te r display~
page 21.
Turn signals and high beam lever
The lever operates the turn signals, the high
b eams and the headlight flasher.
Fi g. 3 8 Tu rn signa l and high beam lever
Turn signals ¢ Q
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The turn signals activate when you move the lev
er into a turn s ignal position when the ignition is
switched on.
@ -righ t tur n signal
@ -left turn signa l
The turn s ignal b links three times if you just tap
the lever.
High beams and headlight flasher
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M ove the lever to the corresponding position:
@ -high beams o n
Lights and Vis ion
@ -high beams off or headlight flasher
T he ind icator light
II in t he inst rument cl uste r
tu rns on.
Notes on these features
- The
turn signals on ly wor k w ith the ign ition
tur ned on. The indicator ligh ts . or
II in the
instr um ent clus ter also b link.
-After you have tu rned a corner, the turn s ignal
sw itches off automatically.
- The
high beam works on ly when the headlights
are on . T he indicator light
II in the instrument
cluste r illuminates whe n the high beams a re
on.
- The
headlight flash er works o nly as long as yo u
hold the leve r - even if there are no lights
sw itched on . The indica to r li ght
II in the in
s trumen t cluste r ill umin ates when you use t he
head light flasher.
,&. WARNING
D o not use t he h igh beam or hea dlight flashe r
i f you know that these could blind oncoming
traffic.
Adjusting exterior lighting
The func tions are selected in the radio or MMI* .
.,. Select: !CAR I func tion b utton > Exterior light
ing .
Or
.,. Sele ct: !~C_A _R~ I function b utton > Car systems *
contro l butto n > Vehicle settings > Exterior
lighting .
Coming home (light when leaving car )*,
Leaving home (light when unlocking car)*
The
coming home f u nction illuminates the area
aro und t he vehicle when the ignition is switched
off and the driver's door is opened. Depend ing on
vehicle equipment, the function can be switched o n and off o r the length of t ime t he lig hts rema in
on* can be adjusted .
The
leaving home function illuminates t he area
around th e vehicle when unloc kin g it. This func-
t ion can be switched on and off. ""
45
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sudden braking or an accident, you would not
be able to brake or accelerate.
Front passenger's seat
Always move the front passenger seat into the rearmost position .
To avoid contac t with the airbag wh ile i t is de
p loying, do not sit a ny closer to the inst rument
panel than necessary and always wear the three
point safety belt provided adj usted correctly. We
recommend that you adjust the passenger's seat
in the following manner:
• Bring the back rest up to an (a lmost) upright
position .
Do not ride with the seat reclined .
• Applies to vehicles with adjustable head re
stra ints: Adjust the head restra int so the upper
edge is as even as possible with the top of your
head.
If that is not possible, try to adjust the
head restraint so that it is as close to this pos i
t io n as poss ible
¢ page 57.
• Place your feet on the f loor in front of the p as
senger 's seat.
Front seats
Power seat adjustment
App lies to vehicles : with power adjustable seats
Fig. 52 Front seats: powe r seat a dju st m en t
Controls
@ -Adjusting the l umbar suppo rt*: press the
button in the corresponding pos it io n
c:> & .
@ -Moving the se at up/down: press the bu tto n
up/down ¢ & .
@ -Mov ing the s eat fo rward/back: p ress the but
ton fo rward/back ¢
&,..
Seats and storage
©-Adjust ing the backrest angle : press the but
ton forward/back ¢.&. .
©-Raising/loweri ng* the head res train ts: p ress
t h e b utton up/down¢ &.
@ -Lengthening/shortening the upper thigh
support*: lift the hand le. A sp ring moves the
fron t se at c ushion fo rward ¢
.&..
_& WARNING
-Never a dju st the drive r's or front passeng
er 's seat while the ve hicle is moving .
If you
do this while the ve hicle is moving , you will
be out of position. Always adjust the d river's
or front passenger's seat when the vehicle is
not moving.
- Be careful when adjusting the seat height. Check to see t hat no one is in the way, or se
rious injury cou ld result!
- Because t he seats can be e lectrically adjust
ed w it h the ignition off or w ith the ignition
key removed, never leave children unattend
ed in the vehicle. Unsupe rv ised use of the
elec tric seat ad justments may cause serious
lnJUr y.
-To r educe the risk of inju ry in the case of
sudden b ra king o r ac cident, front passen
ge rs must neve r ride i n a moving veh icle
wit h the b ackres t re clined. Safety bel ts an d
the airbag system only offe r maximum pro
tect ion when the bac krest is upright and the
safety belts are prope rly positioned on the
body. The more the backrest is reclined, the
greater t he risk of personal injury from an
incorrect seating posit io n and improperly
positioned safety belts.
55
Driving
Speed warning 1: setting a speed limit
Warning threshold 1 is set by the I SE TI button.
F ig. 82 SET button in the instrument cluster
Storing the m aximum spe ed
• Drive at the desired maximum speed.
• Press the
!SET I button in the instrument p anel
display
c;, fig. 82 for 1 second .
Resetting the ma ximum speed
• Drive the vehicle at a speed of at least 3 mph
(5 km/h)
• Press the
i~S-ET~ I button for mo re than 2 seconds .
The . (USA models) /. (Canada models)
speed warn ing symbol will appear briefly in the
d isplay when you release the
!SETI button to indi
ca te that the max imum speed has been stored
successfully .
The max imum speed remains stored unti l it is
changed by pressing the
! SET I button again br ief
ly or unt il it is deleted by a lengthy p ush on the
button.
Speed warning 2: setting a speed limit
The radio or MMI* control unit is used to set,
change or delete warning threshold 2.
• Se lect: !CARI funct ion button> Instrum ent
clu ster > Sp eed warning .
Or
• Se lect: !CARI funct ion button> Car syste m s*
control button> Dri ver a ss is t> Speed warning .
Warning th reshold 2 can be set in the speed
r a nge starting from 20 mph to 150 mph (30 km/
h to 240 km/h). Settings can each be adjus ted in
interva ls of 6 mph (10 km/h) .
80
Cruise control system
Switching on
The cruise control system makes it possible to
drive at a constant speed starting at
20 mph (30
km/h).
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Fig . 83 Contro l lever with push-button
Fi g. 84 D isplay: Selected speed
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• Pull the lever to position (D <::> fig. 83 to sw itch
the system on .
• Drive at the speed to be controlled .
• Press button ® to set that speed.
The stored speed and th e green symbol
til;\IJM4 (US mode l)/ El (Canadian model) are
shown in the display
c;, fig. 84. The display may
vary, depending on the type of display in your ve
hicle.
The speed is kept constant by modifying engine
power or through an act ive brake intervention.
A WARNING
-Always pay atte ntion to the traffic around
you when the cruise control is in operation.
You a re always respons ible for your speed
and the distance between your veh icle and
o ther veh icles.
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on necessary precautions e.g. corrosion preven
tion, maintenance and storage. Pay attention to
addit ional information concern ing the battery.
Refer to
c> page 200.
Economical and environ
mentally-friendly driving
General
Your personal style of driving will determine the
economy of your vehicle, as well as exhaust and
noise levels.
Fu el economy, environmental impact , and wear
on your engine, brakes and tires largely depend
on three factors:
- your persona l dr iving style
- operating conditions
- technical limitations
If you anticipate what you need to do next and
drive economically, you can easily cut your fuel
consumption by 10-15 percen t. This sec tion will
give you some tips on how you can help the envi
ronment and your pocketbook .
(!) Tips
The consumpt ion estimates as published by
ENVIRONMENTAL PROTECTION AGENCY (EPA)
and Transport Canada may not correspond to
your actual consumption on the road, which
w ill vary depending upon vehicle load and
speed, road and weather conditions, trip
length, etc.
Drive smoothly and keep a lookout ahead
Vehicles use the most fuel when they are acceler
ating.
" Avoid unnecessary accelerating and braking.
Vehicles use the most fuel when they are acceler
ating . If you anticipate what is going to happen
next, you will need to brake less and, thus, accel
e rate less. Let the vehicle coast whenever possi
ble - for example when yo u see that the next traf
fic light is red .
Driving and the environment
Avoid full throttle
Driving at moderate speeds saves fuel and im
proves your mileage .
"Try and keep well below your car's maximum
speed.
Acce lerat ing gently reduces fue l consumption,
engine wear, and does not disturb the environ
ment .
Fuel consumption, exhaust emissions and engine
noise increase disproportionately at high speeds.
If you drive at approximate ly three quarters of
top speed, fuel consump tion will be reduced by
one half. Never drive faster than the posted
speed l imit and weather cond itions permit .
Reducing unnecessary idling
Even when your car is jus t idling it burns up fuel.
" Shut the eng ine off when you are not driving
the vehicle.
" Do not warm up the vehicle by lett ing the en-
gine run at idle.
It makes sense to shut off the engine in traffic
jams, when wa iting for tra ins to pass a t railroad
crossings, or at traffic lights that have long waits
on red . Turning the engine
off for just 30-40 sec
onds saves more fue l than is burned starting the
. . engine again.
It takes a long t ime for the engine to warm up
fully when it is running at idle. However, wear
and noxious emissions are especially high when
the engine is warming up. So you should drive
away as soon as you sta rt the engine and avoid
running at high rpms wh ile the engine is st ill
warming up.
(D Note
Do not leave engine idling unatt ended afte r
starting .
If warning lights should come on to
indicate improper operation, they would go
un heeded . Extended idling also produces
heat, which could result in overheating or oth
er damage to the vehicle or other property.
179
Wheels
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread
pattern, which are bars that are 1/ 16 inch (1 .6 mm) high and are
spaced evenly around the tire per pendicular to the running direc
tion ¢
fig. 169. The letters "TWI"
or triangles on the tire sidewall
indicate the location of the tread
wear indicators .
The tires have reached the mini mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones ¢.&.
Wheel rotation
Rotating the wheels regularly is
recommended to ensure the tires
wear evenly. To rotate wheels, in
stall the wheels from the rear
axle on the front axle and vice ver
sa. This will allow the tires to have approximately the same
length of service life.
For unidirectional tires, make sure
the tires are installed according to
the running direction indicated on
the tire sidewall¢ page
231.
1> Obey any applicable regulations in your
country.
2 14
H idden damage
Damage to tires and rims can of
ten occur in locations that are hid
den. Unusual vibrations in the ve
hicle or pulling to one side may
indicate that there is tire damage.
Reduce your speed immediately .
Check the tires for damage. If no
damage is visible from the out
side, drive slowly and carefully to
the nearest authorized Aud i deal
er or authorized repair facility to have the vehicle inspected.
! WARNING
Tread that has worn too low or
different tread depths on the
tires can reduce driving safety.
This can especially have a nega
tive effect on handling, on the risk aquaplaning when driving
through water, when driving
through curves and when brak
ing, which increases the risk of
an accident.
Technical data
Gross Axle Weight Rating
The Gross Axle Weight Rating is the maximum load that can be appli ed at each axle of the vehi
cle ¢& .
Vehicle capacity weight The vehicle capacity we ight (max. load) is listed
on the driver's side 8 -p ill ar.
_& WARNING
- T he actual Gross Axle Weight Rating at the
front and rear axles should not exceed the
permissible weights, and their combination
must not exceed the Gross Vehicle Weight
Rating .
Dimensions
Length in (mm)
Width in (mm)
Width (across mirrors) in (mm)
Height (unloaded) al in (mm) -
Exceeding permissible weight ratings can
result in veh icle damage, acc idents and per
sonal injury.
(D Note
- The vehicle capacity weight figures apply
when the load is distributed evenly in the
vehicle (passengers and luggage). When
transporting a heavy load in the luggage
compartment, carry the load as near to the
rear axle as possible so that the vehicle 's
hand ling is not impaired .
- Do not exceed the maximum permissible
axle loads or the maximum gross vehicle
we ight. Always remember that the vehicle's
hand ling will be affected by the extra load.
T herefore, adjust your speed accordingly.
- Always observe local regulations .
AS Coupe 55 Coupe
182.1 (4626) 182 .7 (4640)
73.0 (1854) 73 .0 (1854)
7 9.5 (2020) 79 .5 (2020)
54.0 (1372) 53 .9 (1369)
al T h e he igh t of th e vehicle depend s on the tir es and t he s usp en sion .
When driving up steep ramps, on rough roads,
over curbs, etc. it is important to remember that
some parts of your vehicle, such as spo ilers or ex-
Capacities
Fuel tank: tota l capacity
Windshield and headlight* washer fluid conta iner
242
haust system components, may be close to the
ground . Be careful not to damage them.
gal (liters) 16.1 (61.0)
quarts (liters) 4
.8 (4.5)