window AUDI S4 2017 Owners Manual

Table of contents
About this Owner's Manual ... .. .
Cockpit ... .. ............... .... .. .
Cockpit overview ................ .
Controls at a glance ... .......... .. .. .
Instrument cluster .. .......... .. .. .. .
Multifunction steering wheel plus ... .. .
Multifunction steering wheel ......... .
Driver Informat ion System ..... .. .... .
H ead-up Display .... .. .. ..... ... .. .. .
Camera-based traff ic sign recognition .. .
O n Board Diagnostic System (OBD) .... .
I ndicator l ights .............. .... .. .
Starting and driving
Opening and closing Cent ral Lock ing .............. .... .. .
L uggage compa rtment lid ... ..... .. .. .
Child safety lock .... .......... .. .. .. .
Power window ... .. .......... .. .. .. .
Sliding/tilting sunroof ......... .... .. .
Valet parking function ............. .. .
Garage door opener (Homelink) . .. .. .. .
L ights and Vision .............. .. .
Exterior lighting . .. . .......... .. .. .. .
Interior lighting ...... ........... ... .
V1s1on ....... .. ................ ... .
Windshield wipers . ... .... .... .. .. .. .
Digital compass . ............. .... .. .
Seats and storage ............ ... .
General information .......... .. .. .. . 6
8
8
8
10
12
15
16
23
24
25
26
37
37
3 7
43
45
45
47
47
48
so so
53
54
56
58
6 1
61
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 61
H ead restraints . . . . . . . . . . . . . . . . . . . . . 62
Memory function . . . . . . . . . . . . . . . . . . . . 63
Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Luggage compartment . . . . . . . . . . . . . . . 65
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Warm and cold . . . . . . . . . . . . . . . . . . . 68
Climate control system . . . . . . . . . . . . . . . 68
3 zone deluxe automatic climate control . 69
Steer ing whee l heating . . . . . . . . . . . . . . .
7 1
2
Driving ..... .. .. .. .. ... .......... . .
General information . ... ........... . .
Steering .......... .. .. . .......... . .
Start ing and stopping the eng ine ..... . .
Start/Stop system .. .. ............. . .
E le ctromechanical parking brake ...... .
Automat ic transmission
Trailer towing ... .. ... .. ..... ... . .
Driving with a trailer .. ........ ..... . .
Trailer towing information
Driver assistance .. ............ .. .
Assist ........... ... .............. .
Electronic speed limiter ... .. ... ... .. . . 73
73
75
76
78
81
83
90
90
91
93
93
93
Speed warning system . . . . . . . . . . . . . . . . 93
Cruise control system . . . . . . . . . . . . . . . . 93
Predictive efficiency assist . . . . . . . . . . . . . 95
Audi adaptive cruise control . . . . . . . . . . . 96
Predictive control (efficiency assist) . . . . .
102
Congestion assist . . . . . . . . . . . . . . . . . . . . 104
Distance ind icator and distance warning 105
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Audi pre sense . . . . . . . . . . . . . . . . . . . . . . 107
Audi pre sense basic. . . . . . . . . . . . . . . . . . 108
Audi pre sense front . . . . . . . . . . . . . . . . . 108
Audi pre sense rear . . . . . . . . . . . . . . . . . . 110
Audi pre sense city . . . . . . . . . . . . . . . . . . . 110
Settings in the Infotainment system . . . . 111
Driver messages . . . . . . . . . . . . . . . . . . . . . 111
Audi active lane assist . . . . . . . . . . . . . . . . 112
Audi sid e ass ist . . . . . . . . . . . . . . . . . . . . . 115
Audi drive select . . . . . . . . . . . . . . . . . . . . . 121
Parking systems . . . . . . . . . . . . . . . . . 124
Genera l information . . . . . . . . . . . . . . . . . 124
Rear parking system . . . . . . . . . . . . . . . . . 125
Parking system plus . . . . . . . . . . . . . . . . . . 125
Rearview camera . . . . . . . . . . . . . . . . . . . . 126
Peripheral cameras . . . . . . . . . . . . . . . . . . 128
Adjusting park assist . . . . . . . . . . . . . . . . . 131
Error messages . . . . . . . . . . . . . . . . . . . . . 132
T railer hitch . . . . . . . . . . . . . . . . . . . . . . . . 132
Intelligent Technology . . . . . . . . . . 134
Electronic Stabilization Control (ESC) . . . . 134
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

<( a, .... N ,....
N .... 0 0
3 a,
(!) side assist displays, warning abo ut
exiting the vehicle ..... ... .. .. .
@ Door handle
@ Cent ral locking switch ....... .. .
@ Memory buttons ........... .. .
® Vent
® Thumbwhee l for vent
(J) Lever for:
- T urn signals and h igh beams
- Headl ight assistant ......... .
- Active lane assist .. ..... ... . .
- Congestion assist ....... .. .. .
@ Mul tifunction steer ing wheel with:
- Horn
- Driver's airbag . ..... ... .. .. .
- Drive r information system con -
t rols .. .. ............. .. .. .
- Audio/v ideo, telephone, nav iga­
t ion and voice recognition con-
trols . ... .... .. .... ... .. .. .
- Button ~/steering wheel heating
- Sh ift paddles .............. .
® Instrument cluster ....... .. .. .
@
@
@
@
~
@
Reset trip odometer ........ .. .
W indshie ld w asher system lever
Emergency flashers .... ... .. .. .
Knee a irbag ........ ... .. ... . .
Adjustable steer ing column
Lever for:
- Cruise cont rol system ..... .. .
- Adaptive cruise cont rol .. ... . .
@ Instrument i llum ination ... .. .. .
@ Data link connector for On Board
Diagnostic System (OBD II) .. .. .
@ H ood release . ........... .. .. .
@ Button for switching the Head-up
d isplay on/off, adjust ing the
height .. .. ............... .. .
@ Lig ht switch ............... .. .
@ Buttons for :
- All weather lights
llS
41
63
5 1
5 1
112
104
25 7
12, 15
14, 15
1 4
86
10
12
56
53
269
75
93
96
54
25
305
23 50
50
Coc kpit o ve rv iew
-Rear fog lights .. .. .. ..... .. .
@ Switch for luggage compartment
li d .... ... .. .. .. .... .. ... .. . .
@ Power exterior m irro r adjustment
@ Power windows .............. .
@ Parental cont rol ............. .
@ Infotainment system dis play . .. .
@ Lockable glove compartment ... .
@ Drives for CD, DVD, SI M cards .. .
@ Front passenger's airbag .... .. .
@ Valet Park ing funct ion ........ .
@ Climate cont ro l system ........ .
@ Depend ing on equ ipment, buttons
for:
- drive select .. .. ............ .
- Start/Stop system . ... ... .. . .
- Electronic Stabilization Control
(ESC) ..... .. .. ... ....... .. .
- Parking system . .... . ..... .. .
- Switching the Infota inment sys-
tem disp lay on/off .......... .
@) Socke t ... .. .. .. ............ .
@ Cup holder . ... .. .... . ..... .. .
@ Infotai nment system on/off
button ... .. .. .. .... .. ... .. . .
@ Center armrest w ith sto rage com­
partment . Depending on vehicle
equipment, it may have:
- Aud i m usic interface ........ .
@ starting the engine when the re is a
ma lfunction .. ... .... . ..... .. .
@ E lectromechanical parking brake
@ Automa tic transmission se lector
lever ... .. .. . ... ............ .
@ Infotainment unit ............ .
@ I START EN GIN E STOP ! ........ .
(D Tips
50
43 54
45
45
142 64
2 10
257 47
68
121
78
135
124
142
64
64
141
215
78
81
83
141
76
Some the equipment listed here is only instal ­
l ed in certa in models or is available as an op-
tion .
9

Cockpit overview
Camera-based traffic
sign recognition
Description
Applies to: vehicles with camera-based traffic sign recogn i­
tion
F ig. 21 Instrument cluster: traffic sign recognition
Fig. 22 Windshield: camera window fo r tra ffic sign recog­
nit ion
Traffic sign recognit ion assists you when driving
by displaying detected speed limits or signs pro­
hibiting passing in the instrument cluster disp lay
~fig . 21. Within the limits of the system, the le­
gal speed limits in school zones are detected and
displayed.
General information
Traffic sign recognit ion can detect standard
speed limit signs that are within the camera's vis­
ual field. With assistance from navigation data,
detected speed limits are evaluated and shown in
the display. The traffic sign for the current de­
tected speed limit will blink in the display if you
exceed the warning threshold set in the Infotain­ ment system
~ page 2 5 .
The traffic sign recognition is subject to certain
system limitations and may be unavailable or on­
ly partially available in the following situations:
24
-when visibility is poor, such as in snow, rain,
fog or heavy spray .
-when there is glare, for example from oncom­
ing traffic or the sun.
- at high speeds.
- if the camera's visual field
~ fig. 22 is covered,
for examp le by dirt or st ickers. For info rmation
on cleaning, refer to
c::> page 33 7.
- if the traffic signs are completely or partially
covered, for examp le by trees, snow, dirt or
other vehicles.
- if speed traffic signs do not conform to the
standards.
- if traffic signs are damaged or bent.
- if traffic signs are d isplayed on sign holders
w ith electronic signs.
- if the traffic signs or the configuration of the
road have changed (navigation data is no lon­
ger up-to-date) .
.&_ WARNING
Pay attention to traffic and the area around
your vehicle when traffic sign recognition is
turned on . The traffic signs installed on the
road always take precedence over the display.
The driver is always responsible for correctly
assessing the traff ic situation.
- Under some circumstances, traffic sign rec­
ognition may not detect traffic signs cor­
rectly or detect them at all. As a result, the
system may not display the correct speed
lim it or any speed limit.
- Traff ic sign recognit ion does not adapt your
veh icle's speed to match the speed limit!
- The display in the instrument cluster is
based on the units of measurement used for
speed in that country. As a result, the dis­
play
SO in the instrument cluster can mean
eithe r km/h or mph, depending on the coun­
try.
-

Opening and closing
Key set
Fig. 25 Your veh icle key set
@ Remote control key with integrated
mechanical key
You can unlock/lock your veh icle w ith the remote
control key . A mechan ical key is integrated in the
remote control key~
page 39.
@ Key fob with vehicle code
Applies to veh icles with Audi connect vehicle control
Open the key tag and scratch to reveal the veh icle
code . You can unlock the Audi connect vehicle
control se rvices* for your vehicle with this vehicle
code . For additional information, refer to
~ page 181 .
Replacing a key
If a key is lost, see an authorized Audi dealer or
authorized Audi Service Facility. Have
this key de­
activated .
It is important to bring all keys with
you .
If a key is lost, you should report it to your
insurance company.
Number of keys
You can check the number of keys assigned to
your vehicle in the Infotainment system . To do
this, select the
IM ENU I button > Vehicle > left
control button
> Service & checks> Vehicle in·
formation .
This way, you can make sure that you
have all the keys when purchasing a used vehicle.
Electronic immobilizer
The immob ilizer prevents unauthorized use of
the vehicle .
Under certain circumstances, the vehicle may not
be able to start if there is a key from a different
veh icle manufacturer on the key chain.
38
Data in the master key
When driving, service and maintenance-re levant
data is continuously stored in your remote con­
trol key. Your A udi service advisor can read out
this data and tell you about the work your vehicle
needs . This applies also to vehicles with a con­
venience key*.
Personal convenience settings
If two people use one vehicle, it is recommended
that each person always uses "their own" remote contro l key. When the ignition is switched off or
when the vehicle is locked, personal convenience
settings for some systems are stored and as­
s igned to the remote control key .
The stored settings are automatically recalled
when you unlock the vehicle, open the doors or
turn on the ignition.
_&. WARNING
Always take the vehicle key with you when leaving the vehicle, even for a short period of
time. This applies particularly when children
r ema in in the vehicle . Otherwise the children
could start the engine or operate elec trical
equipment such as power windows.
(D Tips
-
The operation of the remote control key can
be temporarily disrupted by interference from
transmitters in the vicinity of the vehicle
working in the same frequency range (such as
a cell phone or radio equipment) . Always
check if yo ur vehicle is locked!

,&_ WARNING
After opening the luggage com partment lid
using the emergency release in vehicles with a
fixed rear seat backrest, make s ure the brack­
et under the rea r bench seat loc ks sec urely in ­
to the mounting eyelet again.
Child safety Lock
-
The child safety lock prevents the rear doors
from being opened from the inside and the rear
power windows from be operated.
F ig. 38 Section of driver's door: co ntrols
Fi g. 39 Rear door: child safety lock
0
N
9 :::, a, a,
"'To deactivate/ac tivate the power wi ndow
switch in the rear doo rs, press the @ button in
the driver's door
r=> fig . 38. The indicator light in
the button turns on/blinks.
"' To also deactivate/activate the inner door han­
dle, open the respective rear door and turn t he
key switch w ith the mecha nical key in the d irec­
t ion of the a rrow or opposi te the d irec tion of
t h e ar row
r=> fig. 39.
Message in the instrument cluster display
(81 Childproof catch: malfunction! Please con ­
tact Service
Open ing and closing
T he re is a ma lf u nction in the c hild safety lock.
Press th e @ button again .
If the me ssage s tay s on, dr ive immedia tely to an
a uth o rized Aud i de aler o r a uth o rized Aud i Serv ice
F acility to have the ma lf u n ction repaired .
,&_ WARNING
-Always take the ve hicl e key with yo u when
leavi ng the vehicle, even for a sho rt period
of t ime. This applies part icularly when chil­
dren remain in t he vehicle. Otherwise chil­
d ren cou ld start t he e ngine o r operate elec­
tr ica l equipment (such a s power windows) ,
which inc reas es t he risk of an ac cident.
-A ma lf u nction in the ch ild safety lock cou ld
allow the rear doors to be opened from the
i n si de, which inc reases the ris k of an acc i­
d ent.
Power window
Controls
The driver can control all power windows.
Fig. 40 Drive r's door: power w indow controls
All power window switc hes are equipped with a
two-stage fu nction:
Opening and clos ing the w indows
-
"' To open or close the window comp letely, press
the switch down or pull the switch up briefly to
the second level. The operat ion will stop if the
sw itch is pressed/pulled again.
"' To select a pos it ion in between opened and
closed, p ress/p ull the switch to the first level
until the des ired w indow pos ition is reache d. ..,.
45

Opening and closin g
Pow er wind ow s witch es
@ Right front door
® Left rear door
© Right rear door
A WARNING
- Always take the vehicle key with you when
leaving the vehicle, even for a short period
of time. This applies particularly when chil­
dren rema in in the vehicle . Otherwise ch il­
dren could start the engine or operate elec­
trical equipment (such as power windows),
wh ich increases the r isk of an accident. The
power windows continue to function unti l
the driver 's door or front passenger 's doo r
has been opened .
- Pay carefu l attention when closing the win­
dows . Pinching co uld cause injuries.
- When loc king the vehicle from outside, the
vehicle must be unoccupied since the win­ dows can no longer be opened in an emer­
gency .
(D Tips
After turning the ignition off, you can still
open and close the windows for approximate­
ly 10 minutes. The power windows do not
switch off unt il the driver's door or front pas ­
senger's door has been opened .
Convenience opening/closing
-
All of the windows and the roof* can be opened/
closed at the same time.
Conv eni ence opening feature
.,.. Press and hold them button on the remote con­
tro l key unt il all of the windows reach the de­
s ired position and the roof* is tilted open .
Conveni ence closing feature
.. Press the i'.D button on the remote control key
unt il the roof* is closed¢,& , or
4 6
Conveni ence closing with the convenience
k ey*
.. Touch the sensor* on the door handl e until all
of the windows and the roof* are closed . Do not
place your hand in the door handle when doing
this .
Setting conv en ience openin g in the
Infota inment system
.. Select in the Infotainment system: IMENU l but­
ton
> Veh icle > left control button > V ehicle
se tting s
> Centr al lo cking > Lon g press to
op en windo ws.
A WARNING
-Never close the w indows or the roof* ca re­
lessly or in an uncontrolled manner, s ince
this increases the risk of inju ry.
- For secur ity reasons, the windows and the
roof* can only be opened and closed with
the remote control key at a maxim um dis ­
tance of approximately 6 feet (2 m) away
from the vehicle . Always pay attention when
using the
rn button to close the windows
and the roof* so that no one is pinched. The
clos ing process will stop immediately when
the
l'.D button is released .
Correcting power window malfunctions
After disconnec ting the vehicle bat tery , the one­
touch up and down fea ture mus t be ac tiva ted
again .
.. Pull the power window switch up until the win­
dow is completely raised .
.. Release the switch and pull it up aga in for at
least one second .
-

Warm and cold
Warm and cold
Climate control system
Description
The climate control system warms, cools and re­ moves humidity from the air in the vehicle interi­
or. It is the most effective when the windows and
sunroof * are closed. If there is a bui ld-up of heat
inside the vehicle, ventilation can he lp to speed
up the cooling process.
I n all heating mode f unctions except for
defrost ,
the blower only switches to a higher speed once
the engine coolant has reached a sufficient tem­
perature .
Pollutant filt er
The po llutant filter removes poll utants such as
dust and pollen from the a ir .
Ke y recognit ion
The climate control settings are automatically
stored and assigned to the remote contro l key
that is in use .
@) For the sake of the environment
-If you wo uld like to reduce fuel consump­
tion, switch the ai r cond itioning off. This
will a lso reduce em issions.
68
- In veh icles with a diesel engine, you can
switch the auxiliary heater off in the Info­
tainment system.
(D Tips
- To prevent interference with the heating
and cooling output and to prevent the win­
dows from fogging over, the a ir intake in
front of the windshield must be free of ice,
snow or leaves.
- Condensation from the cooling system can dr ip and form a puddle of water under the
vehicle . This is normal and does not mean
there is a leak .
- If you see that, for example, the seat heat­
ing* or rear w indow defogger are not heat­
ing, the energy management system may
have switched them off temporari ly . These
systems a re available again as soon as the
energy supply has been resto red.

Warm and cold
system operates most efficiently in eco cooling
mode.
A/C MAX cooling mode*
You can switch the maximum cool ing mode on or
off using the rocker switch@. Th e air is not
coo led and humidity is not removed when cooling
mode is switched off. This can cause fog on the
windows. Cooling mode switches off automati­
cally when the outside temperature is below
zero. When the cooling mode is switched on, the
vehicle interior is cooled as quickly as possible
and dehumidified .
c:E) Recirculation mode
In recirculation mode, the air inside the vehicle is
circu lated and filtered. This prevents the unfil­
tered air outside the vehicle from entering the
vehicle interior. We recommend switching recir­
culation mode on when dr iv ing through a tunnel
or when s itting in traffic
c::> ,&.
Using the button, recirculation mode is~ using
the button. You can also switch the recirculation
mode off by pressing the knob
(D :1E or the but ­
ton.
AUTO
Automatic mode
Automatic mode ma intains a constant tempera­
ture inside the vehicle. Air temperature, airflow
and a ir distribution are controlled automatically .
You can switch automatic mode on or off by
pressing the knob@.
Temperature
You can adjust the temperature between 60°F
( + 16°() and 84°F ( +28°() by turn ing the knob
(D . If outside of this range, LO or HI will appear
in the climate control system d isplay. In both
sett ings, the climate control runs constantly at
the maximum cooling or heating level. The tem­
pe rat ure is not regulated.
The temperature can be adjusted in the rear us­
ing the rear contro ls
c::> fig. 74 .
86'~ Blower
You can adjust the vo lume of air generated by the
blower to your preference using the rocker switch
70
@ . To have the blower regulated automatica lly,
press the knob
(D.
Air distribution
You can use the rocker sw itches @to adjust the
ven ts where the air w ill flow o ut of. P ress the
rocker switches @repeatedly until the desired
air distribution setting is disp layed in the climate
contro l system controls. To have the air distribu­
tion regulated automatically, press the knob
(D.
-Jit-OPEN/CLOSE the wide vent
You can open and close the wide vent in the cock­
pit using the rocker switch ®·
JI 8M Seat heating and ventilation*
If you press the button JI~ the seat heating/
ventilat ion is switched on at the highest leve l (3).
The LEDs indicate the temperature level. To re­
duce the temperature, press the button again. To
switch the seat heating/ventilation off, press the
button repeatedly unti l the LED turns off .
3%i Defrosting
The windshield and side w indows are defrosted
o r cleared of condensation as quick ly as poss ible.
The maxim um amount of air flows mainly from
the vents below the windshield . Recirculation
mode switches off. The temperature should be
set at + 72°F (22°() or higher. The temperature is
controlled automatically.
Defrost is sw itched on and off~ using the but­
ton. You can switch the function off by pressing
the knob
(D .
Applies to vehicles with windsh ield heating*:
when outside temperatures are low, the wind ­
shield heating is automatically switched on . If
you would like to switch the windshield defroster
on manually, press the button.~-The LED in the
button blinks.
Qii) REAR Rear window defogger
Press the button to switch the rear window de­
fogger !! on. It on ly operates when the engine is
running. It switches off automatically after 10 to
20 minutes, depending on the outs ide tempera­
ture.

To keep the rear window defogger on continuous­ly, press the
Qi!) REAR button longer than 3 sec­
onds. Th is is stored until the ignition is sw itched
off.
SYNC
Synchronizat ion
Use the rocker switch ® to select the fu nct ion .
When synchronization is switched on, the set­
tings for the driver's side are applied to the front
passenger's side and the rear (except for seat
heating/ventilation*). When the settings on the
front passenger's s ide or in the rear are changed,
the synchronization is automatically sw itched off
and
3-zone appears in the display .
SET REAR
function
Use the rocker switch ® to select the funct ion.
When the function is switched on, you can adjust
all settings for the rear using the climate control
system controls in the cockpit . The rear climate
control system controls can not be operated at
the same time. This function switches off a uto­
matically after a certain period of time or after
l eav ing the menu.
Air vents
You can open or close the center and rear vents in
the cockpit and the vents in the rear center con­
sole using the ridged thumbwheels. The levers
adjust the direction of the airflow from the vents.
The wide ve nt is opened and closed using the
rocker switch ®·
Residual heat
You can activate the residual heat funct ion when
the ignition is switched off by pressing the knob
(D. The res idual heat from the coolant is used to
h eat the vehicle inte rior. The residual heat fu nc­
tion switches off automatically after about 15
minutes .
A WARNING
-You should not use the recirculation mode
for an extended period of time since no
fresh a ir is drawn in. With the air-condition­
ing switched off, the windows can fog up,
wh ic h increases the r isk of an accident.
Warm and cold
-Individuals with reduced sensit ivity to pain
or temperature could develop burns when
using the seat heating function. To reduce
the risk of injury, these individuals should
not use seat heating.
(D Note
To avoid damage to the heating elements in
the seats, do not knee l on the seats or place
heavy loads on a small area of the seat.
Basic settings
The climate control system basic settings are ac­
cessed in the Infotainment system.
.,. Select in the Infotainment system: I MENU ! but­
ton
> Vehicle > left control button > Air condi­
tioning
Automatic recirculation
When switched on, automatic rec irculat ion con­
trols the recircu lation mode automatically . You
must press the@
MAX button if fog forms on
the windows.
Automatic auxiliary heater*
T he auxi liary heater he lps to warm the vehicle in­
terior more quickly.
Steering wheel heating
Applies to: veh icles w ith stee ring w hee l heat ing
The steering wheel rim can be heated.
Fi g. 75 Steering whee l: steer ing whee l heating button
.,. Press the button to sw itch the steering wheel
heating on and off~-The message
Steering
wheel heating: on /Steering wheel heating: off
appears in the instrument cluster displa y. IJ,,
71

Driving
next traffic light is red . This produces an engine
braking effect, which helps to protect the brakes
and tires and reduces the emissions and fue l con ­
sumpt ion to zero (fuel shut-off during decelera­
t ion).
Shift effici ently
An effective way to save fuel is to upshift earlier.
Staying in a gear too long uses fue l unnecessari ­
ly .
P ress down o n the acce lerator peda l slowly and
avoid "kick -down".
Avoid full acceleration
You shou ld rare ly t rave l at the maximum vehicle
speed. High speeds cause a disp roportiona tely
h igh inc rease in fuel consump tion, emissions and
traffic no ise . Slower driving saves fuel.
Reduce idling time
The Start/Stop system* he lps to reduce the idling
time automatically. In vehicles witho ut the Start/
S top system* , it is efficient to swit ch the eng ine
off when stopped at r,;1ilro,;1d crossi ngs and long
red lights . Stopping the engine for 30 -40 sec ­
onds already saves more fuel than the amount of
extra fuel needed to restart the engine.
It t akes a very long time in idle to war m the en ­
g ine up to opera ting tempera ture . Wea r and
emissions are especially high in the warm -up
p hase . Therefore, yo u should begin driving im ­
mediately after starting the engine. Avoid high
RPMs while do ing th is.
Have maintenance performed regularly
By having ma intenance performed regularly on
your vehicle, you can help to reduce f uel con­
sumpt ion befo re yo u even start to dr ive. The
maintenance condition of your vehicle not only
affects t raffic safety and long-term value but a l­
so impacts
fuel consumpt ion . A poorly main ­
tained engine can lead to f uel consumption that
is 10% higher than normal.
Avoid short trips
The engine and exhaust cleaning system m ust
reach the ir opt imal
operating temperature to ef­
fectively reduce consumption and em iss ions.
74
A cold engine uses a d isproportionately high
amount of fue l. The engine reaches operating
temperat ure and cons umption norma lizes on ly
after approximate ly
four ki lometers.
Check the tire pres sure
To save fue l, make sure the t ires are always in­
flated to the correct press ure
¢ page 32 7. The
fuel consumpt ion can increase by S% if the pres ­
s u re is only 0.5 bar too low. Due to the increased
roll ing resistance, low tire pressures w ill also
l ead to greater tire
wear and will affect dr iving
behavior.
Do not drive on
winter tires year-round, as this
will consume up to 10% more f uel.
Eliminate unnecessary we ight
Since eve ry kil og ram o f extra weight in creases
fuel consumption, a quick inspection of the lug­
gage compartment may be worth it to avoid un­
necessary we ight.
When no t be ing used, a roof rack sho uld be re ­
moved to decrease the wind resistance of the ve­
hicle . You will save approx imately
12% of your
fuel when at speeds from 62-75 mph (100-120 km/h).
Save energy
The eng ine drives the generator, which generates
electricity; the fuel consumption also inc reases
with the demand for e lectricity. Therefore, switch
e lectrical equ ipment off when you no longer
need it. Examples of eq uipment that uses a lot of
energy are air blowers at a high setting, the rear
window defogger and seat heating* .
(D Note
Do not leave engine idling unattended after
starting . If warning lights shou ld come on to
i ndica te improper operation, they would go
unheeded . Extended idling also prod uces
h eat, w hic h could result i n overheating o r
o ther damage to the veh icle o r othe r prope r­
ty .