control valve AUDI A6 2018 Owners Manual

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.
.,.

Airbag syste m
Airbag System for the front passenger seat from
doing its job in a crash.
The front Advanced Airbag S ystem con sists
of the follo wing :
-Crash sensors in the front of the vehicle that
measure vehicle acceleration/deceleration to
provide information to the Advanced Airbag
System about the severity of the crash.
- An electronic control unit, with integrated
crash sensors for front and side impacts. The
control unit "decides" whether to fire the front
airbags based on the information received from
the crash sensors . The control unit also "de ­
c ides" whether the safety belt pretens ioners
shou ld be activated .
- An Advanced Airbag with gas generator and
contro l valve for the driver ins ide the steer ing
whee l hub.
- An Advanced Airbag with gas generator and
contro l valve inside the instrument pane l for
the front passenger.
- A capacitive passenger detect io n system under­
neath t he front passenger seat cover. This sys­
tem measures the elect rical capac ita nce of the
person in the seat. The info rm ation registe red
is sent continuous ly to the e lectronic control
unit to regulate deployment of the front Ad ­
vanced Airbag on the passenger side .
- An airbag monitoring system and indicator
light in the instrument cluster
Q page 154 .
-A sensor in each front seat registers the dis ­
tance between the respective seat and the
steering wheel or instrument pane l. The infor ­
mation reg istered is sent continuously to the
electronic control un it to regulate deployment
of the front Advanced Airbags .
- The
PASS ENGER AIR BA G OFF light comes on
and stays on in the center of the instrument
panel
Q page 154, fig . 154 and tells you when
the front Advanced A irbag on the passenger
s ide has been turned off .
- A sensor in the safety belt latch for the driver
and for the front seat passenge r that senses
whethe r th at safety belt is latched or not and
t ransm its this info rmat ion to the electronic
contro l unit.
150
_&. WARNING
Damage to the front passenger seat can pre­
vent the front airbag from work ing properly.
- Improper repair or disassembly of the front
passenger and driver seat will prevent the
Advanced A irbag System from function ing
properly.
- Repairs to the front passenger seat must be
performed by qualified and properly trained
wo rkshop personne l.
- Never remove the front passenger or driver seat from the vehicle .
- Never remove the upholstery from the front
passenger seat.
- Never d isassemble or remove parts from the
seat or disconnect wires from it.
- Never carry sharp objects in your pockets or
put them on the seat. The capacit ive pas­
senger detect ion mat in the front passenger
seat will not function p roperly if it is punc­
tured.
- Never carry things on your lap or carry ob­
jects on the front passenger seat. Such ob­
jects can influence the capacitance regis­
tered by the capaci tive passenger detection
system, so that incorrect in format ion is pro­
vided to the airbag control unit.
- Never store i tems under the front passenger
seat. Parts of the Advanced Airbag System
under the passenger seat could be dam­
aged, p reventing them and the airbag sys­
tem from working p roper ly.
- Never p lace seat covers or replacement up­
holstery that have not been specifically ap­
proved by Audi on the front seats.
- Seat covers can prevent the Advanced Air­
bag System from recognizing child re­
straints or occupants on the front passenger
seat and prevent the side airbag in the seat
backrest from deploying properly.
- If a seat heater has been retrofitted or oth­
erwise added to the front passenger seat,
never install any child res tra int system on
this seat.
- Never use cushions, p illows, blankets, or
sim ila r items on the front passenge r seat.
The additional laye rs prevent the capac it ive

Checking and Filling
-If you a re unable to determine whether or
not a particular fuel blend meets the speci­
fications, ask your service station or its fuel
supplier.
- Do not use fuel for which the contents can­
not be identified.
- Fuel system damage and performance prob­
lems resulting from the use of fuels differ­
ent from those specified a re not the respon­
sibility of Audi and are not covered under
the New Vehicle or the Emission Control System Warranties.
- If you experience a loss of fuel economy or
driveability and performance problems due
to the use of one of these fuel blends , we
recommend that you switch to unblended
fuel.
Gasoline additives
A major concern among many auto manufactur­
ers is carbon deposit build-up caused by the type
of gasoline you use.
Although gasoline grades differ from one manu­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on vital engin e
parts, such as fuel injectors and intake valves. Al­
though most gasoline brands include additives to keep engine and fuel systems clean, they are not
equally effective .
Audi recommends using TOP TI ER Dete rgent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline , please go to the official website
(www .toptiergas .com) .
After an extended per iod of us ing inadequate
fuels, carbon deposit build-ups can rob your
en­
gine of peak performance.
(D Note
Damage or malfunction due to poor fuel qual­
ity is not covered by the Audi New Vehicle Limited Warranty.
186
Refueling
Fueling procedure
Fig. 172 R ig ht re ar sid e o f th e ve hicle: o penin g th e fu el
filler door
Fig. 173 F uel fille r doo r with at tached fuel cap
The fuel filler door is unlocked or locked by the
central locking system.
.,. Press on the left side of the fuel filler door to
open
~ fig. 172.
.,. Unscrew the tank cap counterclockwise .
.,. Place the cap from above on the open fuel filler
door
~ fig.173.
.,. Insert the fuel pump nozzle all the way into the
fuel filler neck .
.,. Begin fueling. Once the fuel pump nozzle turns
off the first time, the fuel tank is full. Do not
continue fueling, or else the expansion space in
the tank will be filled with fuel.
.,. After the fuel pump has switched off, wait five
seconds before removing it to allow the rest of
the fuel to finish dripping into the fue l tank.
.,. Turn the fuel cap clockwise until you hear it
lock.
.,. Close the fuel filler door and then press on the
left side until it latches.
The correct fuel type for your vehicle can be
found on a label located on the inside of the fuel
.,.

Wheels
Use the tire pressure specified for
a normal vehicle load when the
vehicle is partially
loaded ¢ table
on page 213 .
If driving the vehi­
cle when fully loaded, you must
increase the tire pressure to the
maximum specified
pressure ¢.&. -
Checking/correcting tire
pressure
~check the tire pressure at least
once per month and also check it
before every long drive .
~Always check the tire pressure
when the tires are
cold. Do not
reduce the pressure if it increas­
es when the tires are warm.
~check the label¢ fig . 188 for
the correct tire pressure based
on vehicle load.
~correct the tire pressure if nec­
essary .
~store the new tire pressure in
the Infotainment system
¢ page 220.
~check the pressure in the emer­
gency tire*/spare tire*. Always
maintain the maximum temper­
ature that is specified for the
tire.
212
& WARNING
Always adapt the tire pressure
to your driving style and vehicle
load .
-Overloading can lead to loss of
vehicle control and increase
the risk of an accident. Read and follow the important safe­
ty precautions
in¢ page 214,
Tires and vehicle load limits.
-The tire must flex more if the
tire pressure is too low or if
the vehicle speed or load are
too high . This heats the tire up
too much. This increases the
risk of an accident because it
can cause the tire to burst and
result in loss of vehicle con­
trol.
-Incorrect tire pressure in­ creases tire wear and has a
negative effect on driving and
braking behavior, which in­
creases the risk of an accident.
{tfj) Note
Replace lost valve caps to re­
duce the risk of damage to the
tire valves.
@ For the sake of the environment
Tire pressure that is too low in­
creases fuel consumption.