2018 AUDI A6 engine

a co .... N
" N
-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
driving
The amount of fuel consumption, 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
next traffic light is red. This produces an engine
braking effect, which helps to protect the brakes
and tires and reduces the emissions and fuel con­
sumption to zero (fuel shut-off during decelera­
tion) .
Shift efficiently
Upshifting earlier is an effective way to save fuel.
Staying in a gear too long uses fuel unnecessari­
ly .
Press down on the accelerator pedal slowly and
avoid "kick-down".
Avoid full acceleration
You should rarely travel at the maximum vehicle
speed. High speeds cause a disproportionately
high increase in fuel consumption, emissions and
traffic noise. Slower driving saves fuel.
Reduce idling time
The Start/Stop system* helps to reduce the idling
time automatically. In vehicles without the Start/
8 Stop system*, it is efficient to switch the engine 0 \.J ' Driving
off when stopped at railroad crossings 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 takes a very long time in idle to warm the en­
gine up to operating temperature. Wear and
emissions are especially high in the warm-up
phase. Therefore, you should begin driving im­
mediately after starting the engine. Avoid high
RPMs while doing this .
Have maintenance performed regularly
By having maintenance performed regularly on
your vehicle, you can help to reduce fuel con­
sumption before you even start to drive. The maintenance condition of your vehicle not only
affects traffic safety and long-term value but al ­
so impacts
fuel consumption . A poorly main­
tained engine can lead to fuel consumption that
is 10% higher than normal.
Avoid short trips
The engine and emissions control system must
reach their optimal operating temperature to ef­
fectively reduce consumption and emissions .
A cold engine uses a disproportionately high amount of fuel. The engine reaches operating
temperature and consumption normalizes only
after approximately
2 .5 miles (4 km) .
Check the tire pressure
To save fuel, make sure the tires are always in­
flated to the correct pressure
Q page 211. The
fuel consumption can increase by S% if the pres­
sure is only 0.5 bar too low . Due to the increased
rolling resistance, low tire pressures will also
lead to greater tire
wear and will affect driving
behavior.
Do not drive on
winter tires year -round, as this
will consume up to 10% more fuel.
Eliminate unnecessary weight
Since every pound of extra weight increases fuel
consumption, a quick inspection of the luggage
compartment may be worth it to avoid unneces -
sary weight.
.,.
65

Driving
When not being used, a roof rack should be re­moved to decrease the wind resistance of the ve­
hicle. You will save approximately 12% of your
fuel when at speeds from 62- 7 5 mph
(100-120 km/h) .
Save energy
The engine drives the generator, which generates
electricity ; the fuel consumption also increases
with the demand for electricity. Therefore, switch electrical equipment off when you no longer
need it. Examples of equipment that uses a lot of
energy are air blowers at a high setting, the rear
window defogger and seat heating* .
@ Note
Do not leave engine idling unattended after
starting. If warning lights should come on to
ind icate improper operation, they would go
unheeded. Extended idling also produces
heat, which could result in overheating or
other damage to the vehicle or other proper-
ty.
@ Note
- Have your vehicle maintained properly and
in accordance with the service recommenda­
tions in your Warranty
& Maintenance book­
let. Lack of proper maintenance as well as
improper use of the vehicle will impair the
function of the emission control system and
could lead to damage.
- Do not alter or remove any component of
the Emission Control System unless ap­ proved by the manufacturer .
- Do not alter or remove any device , such as
heat shields, switches, ignition wires,
valves, which are designed to protect your
vehicle's Emission Control System and other important vehicle components .
@ Tips
The consumption estimates as published by
ENVIRONMENTAL PROTECTION AGENCY (EPA) and Transport Canada may not corre­
spond to your actual consumption on the
road, which will vary depending upon vehicle
66
load and speed, road and weather conditions ,
trip length, etc.
Steering
Manual steering wheel position adjustment
Applies to: vehicles with manual steering wheel adjustment
The steering wheel posi tion is adjustable up and
down and forward and back .
Fig. 75 Lever on th e stee ring column
.,. Pull the lever in the direction of the arrow
~A -
... Bring the steering wheel into the desired posi­
tion .
.,. Push the lever against the steering column un ­
til it is secure.
A WARNING
Improper use of steering wheel adjustment
and improper seating position can cause seri­
ous personal injury.
-Adjust the steering wheel column only when
the vehicle is not moving to prevent loss of
vehicle control.
-Adjust the driver's seat or steering wheel so
that there is a minimum of 10 in (25 cm)
between your chest and the steering wheel
~page 126, fig. 138. If you cannot main­
tain this minimum distance, the airbag sys­
tem cannot protect you properly .
- If physical limitations prevent you from sit­
ting 10 in (25 cm) or more from the steer­
ing wheel, check with your authorized Audi
dealer to see if adaptive equipment is avail-
able.
.,.

Driving
the ignition is switched off. After entering the ve­
hicle, the steering co lumn returns to the stored
position once the ignition is sw itched on.
Starting and stopping
the engine
Starting the engine
The I S TAR T ENGINE ST OP I button switches the
ignition on and starts the engine.
Fig. 77 Center co nsole : START ENGINE STO P butto n
Starting the engine
.. Press the brake pedal and move the se lector
lever into the P or N po sit ion
¢ ,A .
.. Press the I START ENGIN E STOPI button . The
engine will start .
Switch ing the ignition on /off
If you wou ld like to switch the ignition on with­
out starting the engine, follow these steps:
.. Press the I S TAR T ENG IN E STOPI button with­
out
pressing the brake pedal.
.. To switch the ignition off, press the button
again. The needle in the tachometer
moves into
the
OFF position.
Equipment that uses a lot of electricity is switch­
ed off temporari ly when you start the engine .
If the engine does not start immediate ly, the
starting procedure stops automatically after a
short time. Repeat the starting procedure .
ll This fun ctio n is not availab le in all c oun tries.
68
Start /Stop system*
See the information in ¢ page 70, Start/Stop
system.
A WARNING
To reduce the risk of poisoning, never allow
the engine to run in confined spaces.
(D Note
Avoid high engine speed, full th rottle, and
heavy engine load if the engine has not
reached operating temperature yet . You could
damage the engine.
@ For the sake of the environment
Do not let the engine run while parked to
warm up. Begin driving immediate ly. This re­
duces unnecessary emissions.
(D Tips
- Some noise after starting the engine is nor­
ma l and is no cause for concern.
- If you leave the veh icle w ith the ignition
switched on, the ignition w ill switch off af ­
ter a certain amount of time . Make sure that
electrical equipment such as the exterior
lights are switched off .
Stopping the engine
.. Bring the vehicle to a full stop .
.. Move the selector lever to the P or N posit io n.
.. Press the I START ENGINE STOP I button
¢ page 68, fig. 77.
Steering lock1>
The steering locks when you turn the engine off
using the
I STAR T ENGIN E STOPI button and
open the driver's door . The locked steering helps
prevent veh icle theft .
Emergency off function*
If it is absolutely necessary, the engine can also
be turned off while driving in the R or D/S selec-
tor lever position at speeds be low 6 mph (10 km/
...

a co .... N
" N .... 0 0 \.J ' h). To stop the engine, press and hold the
I START ENGINE STOPI button and also press the
brake pedal.
A WARNING
- Never turn off the engine before the vehicle
has come to a complete stop. The full func­
tion of the brake booster and the power
steering is not guaranteed. You may need to
use more force when braking or steering.
Because you cannot brake and steer as you
usually would, this could lead to accidents
and serious injuries.
- If you leave the vehicle, switch the ignition
off and take the vehicle key with you . Other­
wise, the engine could be started or electri­
cal equipment such as the power windows
could be operated. This can lead to serious
injury.
- For safety reasons, always park the vehicle
with the selector lever in the P position .
Otherwise, there is the risk that the vehicle
could roll unintentionally.
0 Note
If the engine has been under heavy load for
an extended period of time, heat builds up in
the engine compartment after the engine is
switched off and there is a risk of damaging
the engine. For this reason, let the engine run
at idle for approximately two minutes before
shutting it off .
(D Tips
For up to 10 minutes after stopping the en ­
gine, the radiator fan may turn on again auto­
matically or it may continue to run (even if
the ignition is switched off) for the following
reasons:
- The coolant temperature is increasing due
to trapped heat.
- If the engine is warm and the engine com­
partment also heats up from strong sun­
light.
Messages
Turn off ignition before leaving car Driving
This
message appears and a warning tone sounds
if you open the driver's door wh en the ignition is
switched on.
Press brake pedal to start engine
This message appears if you do not press the
brake pedal when starting the engine.
fll 1s key in the vehicle?
This indicator light turns on and this message ap­
pears if the ignition key was removed from the
vehicle when the engine was running. If the igni­
tion key is no longer in the vehicle , you cannot
switch on the ignition or start the engine once
you stop it. You also cannot lock the vehicle from
the outside .
Shift to P, otherwise vehicle can roll away.
Doors do not lock if lever is not in P.
This message appears for safety reasons if the
transmission is not in the P position when you
switch the ignition off . Move the selector lever to
the "P" position . Otherwise the vehicle is not pro­
tected from rolling and it cannot be locked.
II Key is not recognized. Hold back of key
against marked area. See owner's manual
If the indicator light turns on and this message
appears, there is a malfun ction
c> page 70 .
Turn off ignition before leaving car. Battery is
discharging
This message appears if the driver's door is
opened while the ignition is switched on. Always
switch off the ignition if you are leaving the vehi­
cle. Also see
c> page 71.
Shift to P and turn off ignition before leaving
car, otherwise vehicle can roll away
This message appears if the driver's door is
opened while the ignition is switched on and the
selector lever is not in the P position . Move the
selector lever into the P position and switch the
ignition off when you exit the vehicle. Otherwise
the vehicle could roll. Also see
c> page 71.
69

Driving
Starting the engine when there is a
malfunction
It may not be possible to start the engine under
certain circumstan ces, for example if the battery
in the vehicle key is drained, if interference is af­
fected the key or if there is a system malfunc ­
tion .
Fig . 78 Cen te r co nsole /rem ote co ntro l key : sta rt ing t he
en gine if th ere is a m alfu nction
Req uiremen t: the messa ge Key i s no t recog­
nized . Hold back of key against marked a rea.
See owner's manual
must app ear and the DJ in ­
dicator light must tu rn on .
,.. Hold the remo te contro l key in the loc ation in­
dicated as shown in the illustration
y >l) c::> fig . 78.
,.. Press the b rake pedal.
,.. Press the I S TAR T ENGINE STOPI button . The
engine will start.
,.. Drive to an authorized Audi dealer or author­
ized Audi Service Facility immed iately to have
the malfunc tion cor rected .
(D Tips
You can view the message again by pressing
the
I START ENGINE STOP ! button.
Start/Stop system
Description
Applies to: veh icles with Sta rt/Stop system
The Start/Stop system can help increase fuel
economy and reduce
CO 2 em issions.
I n Start/Stop mode, the engine shuts off a uto­
mat ica lly w hen the veh icle is stopped, such as at
ll Ma rket -spe cifi c
70
a traffic light . The ignition remains sw itched on
during this stop phase . The engine wi ll restart
automat ica lly w hen needed .
Applies to: A 6: the Sta rt/Stop system activates
automat ica lly once the ig nition is switched on .
Applies to: 56: the last S tart/Stop system setting
i s re stored whe n the ignition is switc hed on.
Basic requirements for Start/Stop mode
- The driver's doo r must be closed .
- The driver 's seat be lt much be fastened.
- The hood must be closed.
- T he vehicle m ust have driven faster than
2.5 mph (4 km/h) since the last t ime it stop­
ped.
- A t railer m ust not be hitched to the vehicle.
(D Note
A lways swi tch the Start/Sto p system o ff whe n
drivi ng thro ugh wa ter
<::> page 70.
(D Tips
The engi ne s tops s hortly before the ve hicle
comes to a sto p
ll.
Stopping/starting the engine
Applies to: vehicles with Start/Stop sys tem
F ig. 79 In str umen t cl uste r: en gin e sw it ch ed off (stop
p hase )
,.. Brake the vehicl e to a stop. The engine stops
shortly before the vehicle comes to a stop or if
the vehicle is stationary
1> . Keep your foot on
the brake pedal. The
D] i ndicator light appears
in the informat ion line at the bottom of the
.,..

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" N .... 0 0 \.J ' instrument cluster display. The needle in the
tachometer also moves into the
READ Y posi­
t ion
ll .
~ The eng ine starts aga in when you take your
foot off the brake pedal. The ind icator light
turns off.
Additional inf ormation
The engine stops in the P, N and D se lector lever
positions.
I f you select the R pos ition dur ing a stop phase,
the engine will start again .
Shift to P q uickl y to p revent t he engine from
starti ng u ninten tiona lly w hen s hift ing t hrough R .
You can determ ine for yourself if the eng ine will
stop or not by reducing or increas ing the amount
of force you use to press the bra ke pedal. For ex­
ample, if you only lig htly press on t he b rake ped­
a l in stop-and -go traff ic or w hen tu rning, the en ­
gine will not switch
off when the vehicle is sta ­
tionary . As soon as yo u press the brake down
harder, the eng ine will switch off.
(D Tips
-Press the b rake pedal during a Stop p hase
to keep the ve hicle from rolling.
-The ignition wi ll tu rn off if you press the
I START E NGINE STOP ! button during a stop
phase . The need le in the tachomete r moves
i nto the
OFF position.
General information
App lies to: ve hicles with Start/Stop system
The standard Start/Stop mode can be canceled
for various system-related reasons.
Engine does not switch off
B efore and d urin g e ach stop phase , the system
checks if certa in con ditions have been me t. If the
@j indicator light appears in the instrument cl us­
ter disp lay, the engine will not be stopped, for
examp le in the fo llow ing s ituations:
ll Ma rket -specific
Driving
-The engine has not reached the minim um re ­
quired temperature for Sta rt/Stop mode.
-The interior temperature selec ted by the cli -
mate control system has not been reached .
-The outside tempe ra ture is ex tremely high/low.
-The winds hield is bei ng defros ted® .
-The parking system * is sw itched on .
-The vehicle battery charge level is too low .
-The steering wheel is tu rned at a sharp angle o r
is moving.
-After engaging the reverse gear.
-On sharp inclines .
Engine automatically restarts
The standard Start/S top mode w ill be can celed
dur ing a stop phase in the followi ng si tuatio ns.
T he eng ine restarts wi thout any action by the
driver .
-The vehi cle ro lls, fo r example whi le on a slope .
-The inte rior tempe rature d iffers from t he tem-
pe ra ture selected in the A/C system.
-The winds hield is bei ng defrosted® .
-The brake peda l is pressed severa l times in a
row .
-The vehicle battery charge level is too low.
-Power consumption is high.
T he eng ine can turn off aga in when the cond i­
tions for Start/Stop mode are met.
Ignition is switched off automatically
T o p reve nt the vehicle battery from dra ining, the
i gni tion will switc h off
automaticall y under the
f o llow ing co nditions:
-The vehicle has already been dr iven .
-The Start/Stop system has stopped the engine .
-The driver's door is opened .
-The driver's safety belt is unbuckled.
-The brake peda l is not pressed .
-The vehicle is stat ion ary.
In this case, the activated low beam is replaced
by the pa rk ing light. The par kin g lights wi ll
swi tch off afte r approx imately 30 m inutes o r
whe n you lock t he ve hicle.
71

Driving
If the Start/Stop system has not turned of f the
engine or if you have switched the Start/Stop sys­
tem off manually, the ignition will not be auto ­
matically switched off and the engine w ill contin­
ue to run
c:> .&. .
A WARNING
To reduce the risk of poisoning, never allow
the engine to run in confined spaces.
(D Tips
If you select the D or N se lector lever position
after shift ing into reverse, the vehicle must
be driven faster than 6 mph (10 km/h) in or­
de r for the engine to switch off again .
Manually switching the Start/Stop system
off/on
Applies to: vehicles with Start/Stop system
If you do not wish to use the system, you can
switch it off manually.
F ig . 80 Center conso le: Start/Stop system button
-
.. To switch the Start/Stop system off/on man­
ually, press the
l(>:)ml button. The LED in the but­
ton turns on when the system is switched off.
(D Tips
If you switch the system off during a stop
phase, the engine will start again automati­
cally.
72
Messages in the instrument cluster display
Applies to: vehicles with Start/Stop system
Start -stop system deact ivated: Please restart
engine manually
This mess age appears when spec ific conditions
are not met during a stop phase. The Start/Stop
system will
not be ab le to restart the engine. The
engine m ust be started with the
!START ENGINE S T OP ! button.
Start -stop system: System fault! Currently
una vailable
There is a malfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dealer or
authorized Service Facility as soon as possible to have t he malfunction corrected.
Electromechanical
parking brake
Fi g. 81 Cente r conso le : pa rk in g brake
Your vehicle is equipped with an electromechani­
cal park ing brake
c:>fig. 81 . The park ing brake is
designed to prevent the vehicle from rolling un­ i ntentionally and replaces the hand brake .
Setting/manually releasing the parking
brake
.. Pull the<®> switch to set the parking brake . The
LED in the switch turns on. The
-(USA mod­
els)/ . (Canada models) ind icator light also
turns on in the instrumen t cluster display .
.. To re lease the par king br ake man ually, press
the brake or accelerator peda l w hil e the igni­
tion is switched on and press the
(®) switch at
the same time. The LED in the button and the
ind icator light in the disp lay turn off.

a co .... N
" N .... 0 0 \,;J ' Releasing the parking brake automatically
Requirement: the driver's door must be closed,
the driver's safety belt must be latched and the
parking brake must be set.
.,. To start driving and release the parking brake
automatically, press the accelerator pedal as
usual.
In addition to releasing the parking brake auto­
matically, other convenience and safety functions
are available when you start driving
¢page 74,
Starting to drive.
Preventing the automatic parking brake
release
The vehicle could begin rolling unintentionally,
depending on the hill or if towing a trailer.
.,. To prevent the parking brake from releasing au­
tomatically, pull and hold
the(®) switch and
press the accelerator pedal. The parking brake
remains set and prevents the vehicle from roll­
ing backward.
.,. You can release the C®l switch again once you
are sure that you are giving enough driving
force to the wheels by pressing the accelerator pedal.
Emergency braking function
You can use the emergency braking function in an
emergency situation, or if the standard brake op­
eration malfunctions or is disabled.
.,. Pull and hold the®) switch.
.,. As soon as you release the (®) switch or acceler-
ate, the braking stops.
Pulling and holding the
C®) switch while driving
the vehicle activates the emergency braking func­
tion. The vehicle is braked at all four wheels by
activating the hydraulic brake system. The brak­ ing effect is similar to heavy
braking¢&_ .
To reduce the risk of activating the emergency
braking by mistake, a warning tone (buzzer)
sounds when
the®> switch is pulled. Emergency
braking stops as soon as
the®) switch is released
or the accelerator pedal is pressed.
Parking
.,. Press the brake pedal to stop the vehicle.
Driving
.,. Pull the®> switch to set the parking brake .
.,. Place the selector lever in the P position.
.,. Turn the engine off¢&_ .
.,. Turn the steering wheel when parking on in­
clines so that the wheels will roll into the curb
if the vehicle starts moving.
A WARNING
-
- Do not press the accelerator pedal inadver­
tently if a gear is selected when the vehicle
is stationary and the engine is running. Oth­
erwise, the vehicle will start to move imme­
diately and this could result in an accident.
- Emergency braking should only be used in
an emergency, when the normal brake pedal
has failed or the brake pedal is obstructed.
During emergency braking, your vehicle will
brake similar to heavy braking. ESC and the
associated components (ABS, ASR, EDL)
cannot overcome the laws of physics . In cor­
ners and when road or weather conditions
are bad, a full brake application can cause
the vehicle to skid or the rear end to swerve,
which
increases the risk of an accident.
- If the power supply fails , you cannot set the
parking brake if it is released . In this case,
park the vehicle on level ground and secure
it by placing the selector lever in the P posi­
tion. See an authorized Audi dealer or au­
thorized Audi Service Facility for assistance.
- If you leave the vehicle, switch the ignition
off and take the vehicle key with you. This
applies particularly when children remain in
the vehicle. Otherwise children could start
the engine, release the parking brake or op­
erate electrical equipment such as power
windows, which increases the risk of an acci­
dent.
- No one should remain in the vehicle when it
is locked - especially children . Locked doors
make it more difficult for emergency work­
ers to get into the vehicle, which puts lives
at risk.
(D Tips
When stopping at a traffic signal or stopping
in city traffic, you can set the parking brake
manually . The vehicle does not have to be
73