2017 AUDI A7 check engine

co
co
.... N
" N .... 0
00
\.J - Ene rgy management . . . . . . . . . . . . . . . . . 126
Notice about data recorded by the Event
Data Recorde r and vehicle control
modules
127
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Driving safety . . . . . . . . . . . . . . . . . . . . 129
Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Cor rect passenger seating positions . . . . . 130
Driver's and front passenger 's footwell . . 134
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Sto ring cargo co rrect ly .............. .
Repo rting Safe ty Defe cts ............. . 135
136
Audi pre sense . . . . . . . . . . . . . . . . . . . 13 8
Pr eventative passenge r prote ction 138
Safety belts . . . . . . . . . . . . . . . . . . . . . . 14 0
Gene ral information . . . . . . . . . . . . . . . . . 14 0
Why use safety belts? . . . . . . . . . . . . . . . . 14 1
Safety bel ts . . . . . . . . . . . . . . . . . . . . . . . . 143
Belt tens ione rs . . . . . . . . . . . . . . . . . . . . . . 146
Airbag system . . . . . . . . . . . . . . . . . . . . 148
Important information . . . . . . . . . . . . . . . 148
F ront airbags . . . . . . . . . . . . . . . . . . . . . . . 152
Mon itoring the Advanced Airbag System . 160
Knee airbags . . . . . . . . . . . . . . . . . . . . . . . . 164
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . 166
Side curtain airbags . . . . . . . . . . . . . . . . . . 169
Ch ild safety . . . . . . . . . . . . . . . . . . . . . . 172
Important information . . . . . . . . . . . . . . . 172
C hi ld seats . . . . . . . . . . . . . . . . . . . . . . . . . 178
Secur ing c hild seats . . . . . . . . . . . . . . . . . . 183
LATCH system ( lowe r anchorages a nd
tethers for chi ldren) . . . . . . . . . . . . . . . . .
186
Addit io n al i nfo rm ation . . . . . . . . . . . . . . . 190
Maintenance and Care . . . . . . . . . . . 19 1
Checking and Filling . . . . . . . . . . . . . 19 1
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Diese l fue l . . . . . . . . . . . . . . . . . . . . . . . . . 192
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Selective catalytic reduction (Ad Blue/
DEF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
195
Catalytic converter . . . . . . . . . . . . . . . . . . . 198
D iese l part iculate filter . . . . . . . . . . . . . . . 199
Table of contents
Engine compartment . . . . . . . . . . . . . . . . . 199
Engine oi l . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Cooling system . . . . . . . . . . . . . . . . . . . . . . 205
Brake fl uid . . . . . . . . . . . . . . . . . . . . . . . . . 207
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Windsh ield washer system . . . . . . . . . . . . 209
Service interval display 209
Wheels .... .. .. .... .. .......... ... 211
Wheels and Tires ... .... ...... ... .. .. 211
T ire pressure monitoring system
T ire p ressure monitoring system 2 29
231
Care and cleaning . . . . . . . . . . . . . . . . 235
General info rmation . . . . . . . . . . . . . . . . . 235
Car washes . . . . . . . . . . . . . . . . . . . . . . . . . 2 35
Cleaning and care info rmat ion . . . . . . . . . 2 36
Plac ing you r vehicle out of serv ice . . . . . . 2 39
Do It Yourself . . . . . . . . . . . . . . . . . . . . 240
Emergency assistance . . . . . . . . . . . 24 0
Genera l information . . . . . . . . . . . . . . . . . 24 0
Equipment . . . . . . . . . . . . . . . . . . . . . . . . . 240
Tire mobility kit . . . . . . . . . . . . . . . . . . . . . 241
Replacing wheels . . . . . . . . . . . . . . . . . . . . 243
Spare tire 248
Fuses ............................. 250
Replacing fuses . . . . . . . . . . . . . . . . . . . . . 250
D river side cockpit fuse assignment
Front passenger side cockpit fuse 251
ass ignment . . . . . . . . . . . . . . . . . . . . . . . . 252
Luggage compartment f use assignme nt . 252
Emergency situations . . . . . . . . . . . . 254
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 54
Start ing by p ushi ng o r tow ing . . . . . . . . . . 2 54
Sta rt ing wi th ju mpe r cabl es . . . . . . . . . . . 2 54
U se of j umpe r cables . . . . . . . . . . . . . . . . . 255
T owing with a tow truck . . . . . . . . . . . . . . 256
Raising the vehicle . . . . . . . . . . . . . . . . . . . 258
Accessories and Technical Data . 260
Technical data . . . . . . . . . . . . . . . . . . . . 260
Vehicle spec ificat ions . . . . . . . . . . . . . . . . 260
Notes about technical data . . . . . . . . . . . . 260
Weig hts . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
D . . 1mens
1ons .. .. .. .. .... ...... ... .. . . 261
3

Other indicator lights
--------------
Tu rn signa ls
c:>page 19
USA models:
cruise control system
c:> pageBS
Canada models :
cruise con trol system
c:>page BS
Adaptive cruise control*
c:> page 91
Adaptive cruise control*
c:>page 91
Adaptive cr uise control *
c:>page 91
Active lane assist*
c:> page97
Start/S top system *
c:>page 71
Start/S top system*
c:>page 71
High beam assistant*
c:> page 41
High beams
c:> page41
BRAKE /(0) Brake system
If th is ind icator lig ht tu rns on, there is a ma lfunc­
tion in the brake system.
1111 ( USA models ) / . (Canada models ) Stop
vehicle and check brake fluid level.
St op the veh icle and che ck the bra ke f lu id leve l.
See an au tho riz e d Au di dea ler o r aut ho riz e d Aud i
Service Fac ility for assistance if necessa ry .
1111 (USA models ) /. (Canada models )
Brake s: malfunction! Please stop vehicle safely
If the ABS indica to r light ~ (U SA mode ls) /
~ ¢ej (Canada models), the ESC indica to r li ght Gl
~ an d the brake system in dicator light 1111 (USA
8 models) /. (Canada mode ls) all tur n on and
00 \.J ' Instruments and ind icator lights
t hi s message appears, then the ABS, ESC an d
bra king distribution a re ma lfunctioning
c:> ,&. .
Do no t continue dr iv ing . See a n author ized Audi
dealer or au thor ized A udi Se rvice Fa cility for as­
s istance
c:> &. .
1111 (USA models). (Canada models) Park ­
ing brake: System fault! See owner' s manual
- If the ind icator lig ht and the message appea r
when the vehicle is stationary or after switch­
ing the ignition on ,
check if yo u can re lease the
pa rk ing br ake. If you canno t relea se t he p ark­
ing b rake, see your au thor ized A udi de aler or
author ized A udi Se rvice Facility . If you can re ­
lease the parking brake and the message sti ll
appears, see an authorized Audi dea ler or au­
thorized A udi Service Fac ility immediately to
have the ma lfunction co rrected.
- If the ind icator light and message appear
while
driving ,
the hill start ass ist or emergency brak­
ing function may be ma lfunctioning. It may not
be possible to set the parki ng brake or release
it o nce it has been set. Do no t park yo ur vehicle
on hills , See an aut ho rized Audi dea le r or au­
t hor ized A udi Se rvi ce Fa ci lity for assistan ce.
Applies to: USA models
If the 1111 and EiJ tur n on a t the same time, the
bra ke pads are wo rn o ut
c:>page 17.
_& WARNING
-Read and fo llow the w arning s in
c:> page 199, W orking in the engine com­
partment
before o pening the hoo d and
checking the brake fluid level.
- If the b rake syst em i ndi cat or li ght does not
turn off or i t turns on wh ile driving, the
b rake fl uid level in the reservo ir is too low,
an d this increases the risk of an accident.
Stop the vehicle and do not contin ue d riv­
ing. See an autho rized Aud i deale r or au­
thor ized A udi Se rvice Facility for assistance.
- If the b rake system indicator light turns on
together with the ABS and ESC indicato r
lights, the ABS/ESC regu lating fu nction may
be malf unct ion ing . Funct io ns that stabilize
th e vehicle are no longe r av ailabl e. This
could c ause the vehicle to swerve, whi ch
13

Instruments and indicator lights
increases the risk that the vehicle will slide.
Do not continue driving. See an author ized
Audi dealer or author ized Audi Service Facili­
ty for assistance.
PARK/( ®) Electromechanical parking brake
If t he - (USA models) /. (Canada models)
indicator light tu rns on , the park ing brake was
set.
- (USA mod els) /. (Canada models) Cau­
tion : V ehi cle parked too st eep
If the indicato r light blinks and the message ap­
pears, there is not enough braking power to se­
cure the vehicle . The brakes have overhea ted . The
ve hicle could roll away even on a small incline.
- (U SA models) /. (Canada models) Press
b rake p edal to release parking brake
To release the parking brake, press the brake
pedal and press the~ button at the same time
or start driv ing with hill start ass ist
r=> page 75 .
rlJ Parking b rake!
There is a malfunction in the parking brake. Dr ive
to a n author ized Audi dealer or author ized Audi
Serv ice Faci lity immediately to have the malfunc­
tion correc ted.
(D Tips
For add it iona l information on the park ing
brake, see
r=> page 74.
...L Cooling system
• Switch off engine and check coolant lev el!
The coolant leve l is too low.
Do not cont inue driving and switch the engine
off. Check the coolant level
r=> page 206 .
-If the coolant level is too low, add coolant
r=> page 206. Only cont inue driving once the in­
dicator light turns off .
• Cool ant temperature too high! Plea se let en­
gine run with vehicle st ationa ry
14 Let the engine run at idle for a few minutes to
cool off, until the indicator lig
ht turns off .
- If the ind icator light does not tu rn off , do no t
cont inue driv ing the veh icle. See an authorized
Audi dea ler or a uthorized Audi Service Facility
for ass istance.
A WARNING
- Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of burns . Wait until you no longer see o r hear
steam or coolant escaping .
- The engine compartment in any vehicle can
be a dange rous area . Stop the engine and
allow it to cool befo re working in the engine
compa rtment. Always follow the informa­
tion fo und in
r=> page 199, Working in the
engine compartment .
(D Note
Do not continue driving if the . indicato r
li ght t urns on -this inc reases the risk of en­
gine damage.
,(,. Front safety belt
The . indicator lig ht stays on until the dr iver's
and front passenger's safety belts are fastened.
Above a certain speed, there will a lso be a warn­
i ng tone.
(j) Tips
For additional information on safety belts,
see ¢
page 140 .
0 Alternator/vehicle battery
• Electrical s ystem: m alfunction! Battery is
not being charged
There is a ma lfunction in the a lternator or the ve­
hicle e lectrical system.
Drive to an au thorized A udi dealer or au thori zed
Audi Se rvice Fa cility immediate ly. Beca use the ve ­
hicle battery is discharging, turn off a ll unneces­
sary ele ctrical eq uipment such as the radio . Se e
your authori zed Audi dea ler or authori zed Audi
Ill>

Service Faci lity i f th e battery charge level is too
l ow .
(•) Low battery charge : Battery will be charged
while driving
The start ing ability may be impaired .
If th is message turns
off after a litt le while, the
ve hicle battery charged enough wh ile driving.
If the message does not turn
off, h ave an a uthor ­
ized A udi dealer o r autho rized Audi Serv ice Fac ili­
ty repa ir th e malfunct ion.
~ Engine stop while driving
• Engine stopped: No power steering and
brake support .
There is a malfunction in the eng ine or in the fuel
supp ly system.
M ore fo rce is needed to steer and brake the mov ­
ing ve hicle w hen t he engine is stoppe d. If the ve­
hi cle is rol ling, try to b ring it to a stop
off to the
side from moving traffic. See an aut ho rized Aud i
dealer or aut ho riz ed Aud i Serv ic e Faci lity fo r as­
sis tanc e.
A WARNING
-
If the e ng in e stops while d riving, yo u will
nee d to use more force to brak e the vehicle.
T hi s i ncrease s the r is k of an a ccid ent. Th ere
w ill still be power s teerin g if th e i gnit ion is
switched on w hil e the vehicle is rolling an d
there is sufficient battery c har ge. Othe rw ise,
you must use greate r force when steer ing.
~ Engine oil pressure
• Turn off engine and check oil level
Stop the eng ine and do not continue driving .
Chec k the engine oil leve l
Q page 204.
-If the engi ne oil leve l is to o low, add engine oil
Qpoge 204. O nl y con tinue driv ing once the in­
dicato r light turns
off.
co ~ - If the engi ne oil leve l is co rr ec t an d t he i ndic a-
~ to r lig ht st ill tur ns on, tur n the eng ine off and N
8 do not con tinue driving . See an auth o rized Aud i 00 \.J ' Instruments and ind icator lights
dea ler o r auth orized Audi Service Facili ty fo r as ­
sistance .
(D Tips
The oil pres sure w arnin g is no t an oil leve l in­
d ic ator. Always check the oil level regula rly.
't::r;. Engine oil level
• Please add oil immediately.
Add o il imme diate ly Qpoge 202.
Ill Add oil max. x qt (l). You may continue driv­
ing
Add t he d isplayed amount of oil immediately
Q page202.
~- Steering lock
• Do not drive vehicle: Steering defective
There is a ma lfunction in the e lectron ic steering
l ock . You cannot tur n the ign ition on .
Do
not tow yo ur vehicle because it cannot be
stee red. See an a uthorized Audi dea ler or author­
ized Audi Service Facility for ass istance.
!II Steering lock : System fault Please contact
dealer
T he re is a m alfu n ct ion in the e le ctro nic st eering
l ock .
Dr ive to a n au thori zed A udi dealer or au tho riz ed
A udi Se rvice Faci lity i mmed iate ly to h ave the
m alfu nction correc te d .
A WARNING
-
Do not tow yo ur vehicle when there is a m al­
f u nction in t he electron ic steer ing lock - t his
i nc reases t he risk of an acc ident.
© -Engine start system
• Engine start system fault . Please contact
dealer
Do not switch the ignition off because you may
not be able to switch it on again . .,.
15

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.... N
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00
\.J ' the vehicle are no longer available. This could cause the vehicle to swerve, which increases
the risk that the vehicle will slide. Drive care­
fully to the nearest authorized Audi dealer or authorized Audi Service Fac ility and have the
ma lfunction corrected.
(D Tips
For additional information on ESC and ABS,
see
r:::> page 120 .
ii !i.' Safety systems
The II (USA models) / m (Canada models) indi­
cator l ight monitors the safety systems.
If the
II (USA models)/ m (Canada models) in­
d icator light turns on or blinks, there is a mal ­
function in a safety system such as the airbag or
be lt tensioner system .
Drive to an authori zed Audi dealer or authorized
Aud i Service Facility immediately to have the
malfunct ion corrected .
_& WARNING
Have the malfunct ion in the safety systems
inspected immediately . Otherwise, there is a
r isk that the systems may not activate during
a collision, which increases the risk of serious
injury or death.
{0 } Brake pads
EIJ Brake pads!
The brake pads are worn.
Drive to an authorized Aud i dealer or authorized
Aud i Service Facility immediately to have the
b rake pads checked.
Applies to: USA models
The EIJ ind icator light turns on together w ith the
11111 i ndicator light
EPC Engine control (gasoline engine)
If the 13:a indicator light turns on if there is a
malfunction in the engine control.
Instruments and indicator lights
Drive slowly to an authorized Audi dea ler or au­
thorized Audi Service Facility to have the engine
checked.
W Engine control (diesel engine)
The engine is preheating if the II indicator light
turns on when the ignition is switched on .
If the indicator light does not turn on or blinks
while driving, there is an engine control malfunc­
t ion.
Immediate ly drive s low ly to an authorized Audi
dealer or authorized Audi Service Facility to have
the malfunction corrected.
C Malfunction indicator lamp (MIL)
The malfunction indicator lamp (MIL) is part of
the On Board Diagnostic system (OBD II) . The
¢4 c;ymbol turns on when the ignition is sw itched
on and turns off aga in once the engine is started
and running at a steady idle speed. This indicates
that the MIL is f unct ion ing correctly.
The indicator light turns on if there is a malfunc­
t ion in the engine electronics . See an authorized
Audi dealer or authorized Audi Service Fac ility to
have the malfunction corrected. Fo r additional
information, seer:>
page 25.
The ind icator light can also turn on if the fuel fill­
er cap is not closed correctly
r:::>page 193.
_r~ Diesel particulate filter
Applies to: vehicles with diesel engine and diesel particulate
filter
II Particulate filter: System fault See owner's
manual
The diesel particulate filter requires regenera­
t ion . To support the filter 's self -clean ing func ­
t ion:
Drive for approximately 15 minutes at 37 mph
(60 km/h) or above in the S selector lever posi­
t ion . Keep the engine speed around 2,000 RPM .
The temperature increase that will result from
t hi s can burn off the soot in the fi lter. The indica­
tor light wi ll tu rn off when the cleaning has com-
pleted successfully. .,..
17

Instruments and indicator lights
If the i ndicator lig ht does not tu rn of f, drive im ­
mediately to an a utho rized Audi dea le r or author­
ized A ud i Service Fac ility to have the malfunction
corrected.
A WARNING
Always ada pt yo ur speed to the cu rrent
weathe r, road and t raffic conditi ons. You
should never disob ey traffic laws in orde r to
follow drivi ng r ecomme nda tions .
@ Tips
For add it iona l information on the diese l par­
tic ulate fi lter, se e
¢page 199.
!?'i Engine speed limitation
Applies to: vehicles with engine speed limitation
Ill Maximum engine speed: XXXX rpm
The engine speed is automatica lly lim ited to the
speed d isplayed in the instrument cluster. T his
p rotects the e ng ine from overheating .
The engine speed lim itation deactivates once the
engine is no longer in the critical temperature
range and you have released the acce le rato r ped­
al once .
I f the engine speed lim itation was activated by
an eng ine contro l ma lf u nction,
the @B indicator
light also t urn s on. Make su re that the speed
does not go above t he speed d is p layed . Drive to
a n author ized A udi dealer or au thor ized A udi
Serv ice Facili ty im medi ately to have t he m alfunc­
tion cor rec ted.
(D Tips
Applies to: Sand RS models
The e ngi ne sp eed is lim it e d whe n the eng ine
is cold -the full engine o utpu t is not av ail a­
ble. When the engine is at operating temper­
ature, the re d area in th e tachometer moves
to a highe r RPM ra nge.
_ ..., Engine oil sensor
• Oil level sensor: system fault!
18
The sensor to check the en gine o il level has
failed. Drive to an authorized A udi dealer or au­
t h orized Aud i Serv ice Facility immediately to have
the malfunct ion corrected.
f Engine warm -up request
n Please warm up engine
F u el has entered t he engine oil, eithe r from low
outside temperatures or frequent sho rt d rives.
D rive until the eng ine is wa rm so that the f uel in
the e ngine o il w ill evaporate . Avoid hig h eng ine
speeds, f ull accelerating a nd heavy engine loads
wh en doi ng this .
5) Tank system
Ii] Please refuel
If the indicato r light turns on for the first time
and t he message appea rs, the re are abou t 2.6
gallons ( 10 li ters) of f uel left in t he tank .
Ii] Fuel tank system malfunction! Please con­
tact dealer
There is a ma lf u nction in t he f uel tank system.
Dr ive to an au thor ized A udi d ealer or au thorize d
Audi Se rvice Facility immediate ly to have the
malfunction cor rected.
(D Tips
'
For add it ion al in format ion on ref ueli ng, see
¢ pag e 193 .
~ Washer fluid level
f"j i>lease add washer fluid
Fill the w ashe r flui d fo r th e win dsh ie ld was her
system and the he adlight washer sys tem* when
t h e ignit io n is switched off¢
page 209 .
• Windshield wipers
m Windshield wipe r: system fault!
There is a m alfu ncti on with the win dshi eld wip -
ers . ..,.

co
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\.J ' 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 w indows and
sunroof* are closed. If there is a build-up of heat
inside the vehicle, ventilation can help to speed
up the cooling process.
I n all heating mode functions, except for defrost,
the blower on ly switches to a higher speed once
the engine coolant has reached a sufficient tem­
perature .
Pollutant filter
The pollutant filter removes pollutants such as
dust and pollen from the air.
Key recognition
Appl ies to: ve hicles with de luxe a utoma tic clima te co ntro l
The blower setting and air distribution are stored
automatically and assigned to the remote control
key that you are using.
Appl ies to: ve hicles with 4 -zo ne del uxe automat ic cl imate
co ntrol
The climate control settings are automatically
stored and assigned to the remote control key
that is in use.
A WARNING
Poor visibility can lead to accidents.
- For safer driving, keep all windows free of
ice, snow and fog .
- Become familiar as quickly as possible with
the correct use and function of the climate
contro l system, especially with the defrost­
ing and defogging function.
- When the temperature is below freezing,
only use the windshield washer system after
Warm and cold
the windshield has been warmed by the cli­
mate control system. The washer fluid could
freeze on the windshield and impair visibili­ ty .
(D Note
-If you suspect that the climate control sys­
tem is damaged, switch the system off to
prevent further damage and have it checked
by an authorized Audi dealer or authorized
Aud i Service Facility.
- Repairs to the Audi climate control system
require special technical knowledge and
special tools . See an authorized Aud i dealer
or authorized Audi Service Facility.
@ For the sake of the environment
-To save fuel, turn off cooling mode by press­
ing the
IAJCI button . This will also reduce
em iss ions.
- In vehicles w ith a diesel engine, you can
switch the auto supplementary heater off in
the Infotai nment system.
(D Tips
- To prevent interference with the heat ing
and cooling output and to prevent the win­
dows from fogging over, the air intake in
front of the windshie ld 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.
- The energy management system may tem­
porarily switch off certain functions, such as
the seat heating* or rear window defogger .
These systems are avai lable aga in as soon
as the energy supply has been restored.
59

Driving
system can be severely damaged by dr iving
th ro ugh water.
- Always switch the Star t/Stop sys tem * off
when driving through wate r
r:';> page 71.
{D) Tips
-Dete rm ine the depth befo re driv ing th ro ugh
wa ter.
- Do not s to p the veh icle, dr ive in reverse or
swi tc h t he eng ine off when dr iv ing t hrough
wa ter.
- K eep in mind t hat on coming veh icles m ay
crea te waves t hat raise the wate r level an d
make it too deep for your ve hicle to drive
th ro ugh safely.
- Avo id driving through s alt wa ter, because
th is can ca use corros io n.
Economical and environmentally-friendly
driving
The amount of fue l cons umption, the env iron­
men tal impact and the wear to the engine,
b rakes and t ires dep ends mostly on your dr iv ing
style. W ith an anticipatory and economic driv ing
s tyle, f ue l consumption can be reduced by ap­
p roximate ly 10-15% . The following tips will help
you conserve the environment and your money at
the same time .
Anticipatory dr iving
A veh icle uses the mos t fu el when a cce le ra ting.
W hen you dr ive wi th ant icipat ion, you do not
need to brake as often and so you ac celerate less .
When possib le, let your ve hicle coast wit h a
gear
engaged ,
for example, when you notice that the
next traffic light is red. This produces an engine
braking effect, which helps to protect the brakes
and tires and reduces the emissions a nd fuel con­
sumpt io n to ze ro (f uel shut-off dur ing decelera­
tion) .
Shift efficiently
An effective way to save fuel is to upshift earlier.
Staying in a gear too long uses fue l unnecessari­
ly .
Press down on the acce le rator peda l slowly and
avoid "k ick -down" .
66
Avoid full acceleration
You should rarely travel at the maxim um vehicle
speed. Hig h speeds cause a disproportionate ly
high increase in fue l cons umption, emissions and
traffic noise. Slowe r driving saves fue l.
Reduce idling time
The Start-S top system * helps to re du ce the idling
time automat ic all y. In ve hicles withou t the Star t­
Stop system *, i t is efficient to sw itch the engine
off when stopped at railroad crossings and long
red lights. Stopping the engine for 30-40 sec­
onds a lready saves more fue l than the amo unt of
extra fue l needed to restart the engine.
It takes a very long time in id le to warm the en­
gine up to operating temperature. Wear and
emissions are especially high in the warm- up
phase . Therefore, you shou ld begin driving im­
med iate ly after starting the engi ne. Avoid high
RPMs wh ile doing this.
Have maintenance performed regul arly
By having maintenance pe rformed reg ula rly on
your vehicle, you can help to reduce fuel con­
sumption before you even start to drive. The
mainte nance condition of your vehicle not on ly
affects traffic safety and long- term value but al­
so im pacts
fuel consumption . A poorly main­
ta ined engine can lead to fuel consump tio n t hat
i s 1 0% hig he r th an no rm al.
Avoid short trips
The eng ine and exhaust clean ing system must
r each their op tima l
operating temperature to ef­
fect ively reduce consump tion a nd emissions.
A cold engine uses a d isproportionately high
amount of fuel. T he eng ine reaches operat ing
temperat ure and cons umption no rma lizes only
af ter approximate ly
2.5 miles (4 km).
Check the tire pressu re
To save fue l, make sure the t ires are always in­
flated to t he correct press ure
r=':>page 221. The
fuel consumpt ion can increase by 5% if the pres­
s ur e is only 0 .5 bar too low . Due to t he i ncreased
r oll ing resis tance, low tire p ressures w ill also
...