engine AUDI A4 2017 User Guide

Cockpit overview
(•) Electrical system: low battery charge. Plea se
turn on ignition
The start ing ability may be impaired.
If th is message turns off after a little while , the
battery charged enough while driving.
If the message does not turn off and stay off
when dr iv ing, have an authorized Aud i dea ler or
author ized Audi Service Facility repair the mal­
function .
~ Engine oil pressure
• Turn off engine. Oil pressure too low
Stop the eng ine and do not continue driving .
Check the engine oil leve l¢
page 308 .
- If the engine oil level is too low, add engine o il
c=>page 308. Only cont inue driving once the in­
dicator light turns off.
- If the engine oil leve l is correct and the indica­
tor light st ill turns on, turn the eng ine off and
do not continue driving. See an authorized Audi
dealer or authorized Audi Service Fac ility for as­
sistance .
(D Tips
The oil pressure warning is not an o il level in­
dicator . Always check the o il level regularly .
~ Engine oil level (MIN)
• Please add oil immediately.
Add engine o il immed iate ly ¢page 308 .
l!I Please add max. x qt (l) oil. You can contin­
ue driving
Add the maximum amount of oil indicated in the
display as soon as possible
¢page 308.
~- Steering lock
• Steering : malfunction! Please stop vehicle
There is a malfunction in the elect ronic steering
lock . You cannot turn the ignition on.
32
Do not tow your vehicle because it cannot be
steered. See an authorized Audi dealer or author­
i zed Audi Service Facility for assistance.
1!11 Steering lock: malfunction! Please contact
Service
There is a malfunction in the electron ic steering
lo ck.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immed iate ly to have the
malfunction corrected .
& WARNING
Do not tow your vehicle when there is a mal­
function in the electron ic steering lock -this
increases the risk of an accident .
-e Engine start system
• Engine start system: malfunction! Please
contact Service
-
Do not switch the ignition off, or you may not be
able to switch it back on.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected .
13 Engine start system: malfunction! Please
contact Service
There is a ma lfunction in the engine starting sys­
tem .
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediate ly to have the
malfunction corrected.
f;. ![J Electronic Stabilization Control (ESC)
If the Ii) ind icator light blinks while driving, the
ESC or ASR (ant i-slip regu lation) is actively regu­
l ating.
If the
DJ ind icator light turns on, the system has
switched t he ESC off . In t his case, you can switch
the ignit ion off and then on to switch the ESC on
again. The indicator light turns off when the sys-
tem is functioning fu lly. .,..

<( a, .... N ,....
N .... 0 0
3 a,
If the II indicator light turns on, ESC was
switch ed off us ing the
!~0" 1 button ¢ page 134.
Stabili zation c ontrol (ESC / ABS) : malfun ction!
See owne r's manual
If the: G1 indicato r light and the~ (USA mod­
els)/ [iJ (Canada models) A BS i ndicator light tur n
on and the message appears, the re is a malf unc­
tion in the ABS or the elect ronic differen tial lock.
This a lso ca uses the ESC to malfunct ion . The
brakes still function with their norma l power, but
ABS is not active.
Drive to an autho rized Aud i dea ler o r a uthorized
Aud i Service Facility immediately to have the
malfunction corrected.
@ Tips
For addit ional information on ESC and A BS,
refer to ¢
page 134.
!f Safety systems
The El indicator light monitors the safety sys­
tems.
If the El indica tor light turns on or blinks, there
is a malfunction in a safety system .
Drive to an autho rized Aud i dea le r or a uthorized
Aud i Service Fac ility immediately to have the
malfunct ion corrected.
A WARNING
-
Have the safety systems inspecte d immedi­
ately. Otherwise, there is a risk that the sys­
tems may not activate during a collision,
which increases the risk of serious injury or
death .
(CD ) Brake system
[I] Brake s ov erheating . Plea se shift to D
T here was a heavy load on the b rakes. Place the
selector lever in the D/S posi tion in o rder to use
the eng ine braking e ffect and reduce the load on
the brakes .
Cockpit o ve rv iew
'IJ!t:t /(0) Brake pads
II (USA model s)/Ei] (Canada mod els ) Brake
pad s: wear limit rea ch ed. You can continue dri v­
ing . Pl ea se conta ct Service
T he brake pads are worn.
Drive to an au thorized Audi dealer or authorized
Audi Service Facility as soon as possible to have
the malfunc tion corrected .
~ Engine control
II Drive sy stem : malfun cti on! Pleas e contact
Servi ce
T here is an eng ine control malfunction .
Drive slowly to an a uthori zed Audi dea ler or a u­
thori zed Audi Serv ice Facility to have the engine
checked.
W Engine control (diesel engine)
App lies to : vehicles wit h diese l eng ines
The eng ine is preheating if the El ind icator light
turns on when the ignition is switched on .
If the indica tor light does not turn on or blinks
while driving, there is an engine control malfunc ­
t io n.
Immed iate ly drive s low ly to an authori zed Audi
dealer or au thorized Audi Service Fac ility to have
the malfunction corrected .
io Malfunction indicator lamp (MIL)
The malfunction indicator lamp (MIL) is part of
t h e On Board Diagnost ic system (OBD II) . T he
¢..ij c;ymbo l tur ns on when the igni tion is sw itched
o n a nd turns off aga in once the igni tion swi tc h es
on and running at a steady id le speed . This i ndi ­
cates that the MIL is functioning correctly.
T he ind icator light tu rns o n if there is a malfu nc­
t ion in the engine elec tronics . See an au thor ized
Audi dealer or authorized A udi Service Fac ility to
have the malfunction corrected. For additional
information, r efer to ¢
page 25 .
The ind icator light can also tu rn o n if the fuel fill­
er cap was not sealed correctly ¢
page 298.
33

Cockpit over view
~ Diesel particulate filter
Applies to: vehicles with diesel engine and diesel particulate
filter
II Particul ate filt er: malfunct ion! See own er' s
m anual
The diesel particulate f ilter requires regenera­
tion. To support the filter's self-cleaning func­
tion :
Drive for approximate ly 15 minutes at 37 mph
(60 km/h) or above in the S se lector lever posi­
tion. Keep the eng ine speed around 2,000 RPM.
The temperature increase that will result from
this can burn off the soot in the filter . The ind ica ­
tor light will turn off when the cleaning has com­
p leted successf ully.
H ave an authorized Audi dealer or authorized
Aud i Serv ice Facility repa ir the malfunction im ­
mediately if the ind icator light does
not turn off .
A WARNING
Always adapt your speed to the cu rrent
weather, road and traffic conditions . You
should never disobey traffic laws in order to
follow driving recommendations .
(D Tips
For addit iona l information on the diese l par­
t ic ulate fi lter, refer to~
page 303.
!?i Engine speed limitation
II! Ma ximum engine spe ed: XXXX rpm
The engine speed is automat ica lly lim ited to the
speed d isplayed in the instrument clus ter. Thi s
p rotects the engine from overheating.
The engine speed lim itation deactivates once the
eng ine is no longer in the cri tical temperature
range and you have released the acce le rato r ped­
al once.
If t he engine speed l imitation was activated by
an eng ine contro l ma lfunction, the
II indicator
light also turns on. Make su re the engine speed
does no t go above t he speed d isplayed, fo r exam­
p le w hen downsh ifting . Drive to an authorized
34
Audi dealer or authori zed A udi Service Fac ility im ­
mediate ly to have the ma lfunction corrected.
~ ... Engine oil sensor
• Oil le vel system: malfu nction! Please con­
tact S ervice
The sensor to check the engine oi l level has
failed. Drive to an authorized Audi dealer or au­
thorized Audi Serv ice Facility immediately to have
the malfunct ion corrected.
• Oil level sensor: oil change neces sary. Please
contact Service
Fuel has e ntered the engine oil as a result of fre ­
quent short drives. Avo id high engine speeds, full
acce leration and heavy engine loads. D rive to an
authorized Audi dea ler or a uthorized Audi Service
Facility immediate ly to have the o il changed.
• Oil pre ssure sensor: malfunct ion! Plea se
contact Ser vice
There is a ma lf u nction in the oi l pressure senso r.
D rive to an authori zed A udi dealer or au tho riz ed
Audi Service Facility immediate ly to have the
malfunction corrected.
f Engine warm-up request
n Please warm up engine
Fuel has entered the engine oil, eithe r from low
outside temperatures or frequent short drives.
Drive until the eng ine is warm so that the fuel in
the engine o il w ill evaporate. Avoid high engine
speeds, full accelerating and heavy engine loads
when doing this .
E@ Tank system
liD Please refuel
If the indicator light turns on for the first time
and the message appears, there are about 2.1
gallons (8 liters) of fuel left in the tank .
(iD Please refuel immediately
If the indic ator ligh t turns on the message ap ­
pears, the fuel tank is a lmost empty. Refue l the
vehicle immediately .
...

<(
a,
.... N ,....
N .... 0 0
DD Tank syst em : m alfunction ! Plea se conta ct
Se rvice
If the indi cator lig ht t urns on and the message
appears:
- there is a malfunct ion in the fuel ta nk system,
o r
- in vehicles with d iesel eng ines, water may have
collected in the fue l filter .
Drive to an authori zed Aud i dea ler or authori zed
Aud i Service Facility immediately to have the
malfunct ion corrected .
(D Note
Applies to veh icles w ith a diesel engine: if the
diese l fuel quality is poor, it may be necessary
to have the wate r drai ned from the water sep­
arator
l) in the fuel filter more often than
specified in the m aintenance schedule. This
can help red uce eng ine malfu nctions .
(D Tips
For mo re information on fueli ng, ref er to
o=:> page298 .
• Washer fluid level
E;:2 Please add washer fluid
Fill the washer fluid for the w indshield washer
system and the headlight washer system* when
the ignition is swi tched off~
page 316.
El Wind shield wiper s: malfunction! Plea se con­
tact Se rvice
There is a malfunction wi th t he w indsh ie ld w ip­
e rs.
Dr ive to an autho rized Aud i dealer or a uthorized
Aud i Service Facility immediately to have the
malfunct ion corrected.
~ l) Th is func tion is no t av ail able in a ll countri es.
Coc kpit o ve rv iew
~ Driver's door
IJ1 Driver 's door: malfun ction! Shift to P before
leaving v ehicle . See owner's manual
T he re is a ma lfunction in the drive r's door . Select
the P selector leve r pos ition to secure the vehicle .
Drive to an au thori zed Audi dealer or authori zed
Audi Service Facility immed iate ly to have the
malfu nction corrected.
·:<;X· Defective light bulb warning
If the II ind icator light tu rns o n, a bulb has
failed. The message indica tes the location of the
bulb . Replace the bulb immedi ately .
Vehicle lights: m alfunction! Please contact
Servi ce
There is a ma lfunction in the headlights or the
l ight switch . Dr ive to an authorized Audi dealer or
autho rized Aud i Serv ice Facility immediately to
have t he malfunc tion cor rected.
.&_ WARNING
- Light bul bs are under p ressure a nd can ex­
p lode when b ulbs are replaced, w hich in­
creases the r isk of injury.
- W ith HID he ad lights (xenon he adlights), the
high-vo ltage component must be handled
correct ly. Otherwise, there is a risk of fatal
i n jur y.
~0 Dynamic headlight range control system
Iii Headlight range control: malfunction! See
owne r's manual
T he re is a ma lf u nction in the headlight range
contro l system , which may cause glare for other
drive rs.
D rive to an authori zed Audi dealer or au thori zed
Audi Service Facility immed iate ly to have the
malfunction corrected.
.
35

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!

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.

Driving
General information
Breaking in
A new vehicle must be broken in, and the break­
in distance should be 1,000 mi les ( 1,500 km). Do
not drive at speeds that w ill exceed
2/3 of the
maximum permitted engine speed (RPM) for the
first 600 miles (1,000 km) , and avoid full accel­
eration during this period . You may gradually
start increasing the RPM and the speed between
600 miles (1,000 km) and 1,000 miles (1,500 km).
During the first hours of use, the engine has a
higher internal friction than later on when all
moving parts have settled into place with each
other.
How the vehicle is driven during the first 1,000
miles (1,500 km) also affects the engine quality.
Drive at moderate engine speeds after the initial
break-in per iod, part icularly when running a cold
engine . This will reduce engine wear and improve
the mileage .
Do not drive at too
low of an engine speed (RPM).
Shift down when the engine no longer runs
"smoothly" . Extremely high engine speeds are
automatically reduced.
Avoid damaging the vehicle
When you are driving on poor roads, or over
curbs, steep ramps, etc., make certain that low­
lying parts such as spoilers and exhaust system
parts do not bottom out and get damaged.
This is especially true for vehicles with low-slung
chassis (sports chassis)* and fully loaded
vehicles.
Driving through water on roads
Note the following to reduce the risk of vehicle
damage when driving through water, for examp le
<( on flooded roads : a, .... N
~ -The wate r must not be any higher than the bot-....
g tom of the vehicle body .
3 a,
Driving
- Do not drive faster than walking speed.
A WARNING
After driv ing through water or mud, the effec­
tiveness of the brakes may be reduced due to moisture on the brake rotors and brake pads.
A few careful brake applications should dry
off the brakes .
(D Note
-Vehicle components such as the engine,
transmission, suspens ion or electrical sys­
tem can be severely damaged by driving
through water .
- Always switch the Start/Stop system* off
when driving through water
r:';>page 78.
(D Tips
- Determine the depth before driving through
water.
- Do not stop the vehicle, drive in reverse or
switch the engine off when driving through
water.
- Keep in mind that oncoming vehicles may create waves that raise the water level and
make it too deep for your vehicle to drive
through safely.
- Avoid driving through salt water, because
this can cause corrosion .
Economical and environmentally-friendly
dr iving
T he amount of fuel consumpt ion, the environ ­
mental impact and the wear to the engine,
brakes and tires depends mostly on your driving
style. With an anticipatory and economic driving
style, fuel consumption can be reduced by ap­
proximately 10-15%. The following tips will help
you conserve the environment and your money at
the same time .
Anticipatory driving
A vehicle uses the most fuel when accelerating.
When you drive with anticipation, you do not
need to brake as often and so you accelerate less .
When possible, let your vehicle coast with a
gear
engaged,
for example, when you notice that the ..,.
73

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 .