fuel pressure AUDI A7 2018 Owners Manual

a co .... N
" N .... 0 00 \.J '<t
Energy management . . . . . . . . . . . . . . . . . 126
Notice about data recorded by the Event
Data Recorder and vehicle control
modules 127
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Driving safety . . . . . . . . . . . . . . . . . . . . 129
Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Correct passenger seating positions . . . . . 130
Driver's and front passenger 's footwell . . 133
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . 134
S to ring cargo co rrect ly . . . . . . . . . . . . . . . 134
R epo rting Safety Defe cts . . . . . . . . . . . . . . 136
Safety belts . . . . . . . . . . . . . . . . . . . . . . 138
Gene ral informa tion . . . . . . . . . . . . . . . . . 138
Why use safety belts? . . . . . . . . . . . . . . . . 139
Safety bel ts . . . . . . . . . . . . . . . . . . . . . . . . 14 1
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . 144
Airbag system . . . . . . . . . . . . . . . . . . . . 146
I mportant information . . . . . . . . . . . . . . . 14 6
F ront airbags . . . . . . . . . . . . . . . . . . . . . . . 150
Mon itoring the Advanced Airbag System . 158
Knee airbags . . . . . . . . . . . . . . . . . . . . . . . . 162
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . 164
Side curtain airbags . . . . . . . . . . . . . . . . . . 167
Child safety . . . . . . . . . . . . . . . . . . . . . . 170
Important information . . . . . . . . . . . . . . . 170
Ch ild safety seats .............. ... .. . 176
Secur ing ch ild safety seats . . . . . . . . . . . . 181
L ATCH system ( lowe r anchorages a nd
te thers for chi ld ren) . . . . . . . . . . . . . . . . . 184
Ad dit ional informat ion . . . . . . . . . . . . . . . 188
Maintenance and Care . . . . . . . . . . . 189
Checking and Filling . . . . . . . . . . . . . 189
Fu el. .. .... .. ... .. ..... ... .. .. .... . 189
R efueling . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Em iss ions cont rol system . . . . . . . . . . . . . 192
On Board Diagnostic System (OBD) . . . . . 193
Eng ine compartment . . . . . . . . . . . . . . . . . 193
Eng ine oi l . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Cooling system . . . . . . . . . . . . . . . . . . . . . . 199
Brake flu id . . . . . . . . . . . . . . . . . . . . . . . . . 20 1
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 1
Table of content s
Windshie ld washer system . . . . . . . . . . . . 2 03
Service interva l display 203
Wheels .. .. .... .. ... .. ..... ... .. .. 205
Whee ls and Tires . . . . . . . . . . . . . . . . . . . . 205
T ire pressure mon itoring system
Tire pressure monitoring system 222
224
Care and cleaning . . . . . . . . . . . . . . . . 228
Genera l information . . . . . . . . . . . . . . . . . 228
Car washes . . . . . . . . . . . . . . . . . . . . . . . . . 228
Cleaning and care i nformat ion . . . . . . . . . 229
Plac ing your vehicle out of serv ice . . . . . . 232
Do It Yourself . . . . . . . . . . . . . . . . . . . . 233
Emergency assistance . . . . . . . . . . . 233
General information . . . . . . . . . . . . . . . . . 233
E q ui pment . . . . . . . . . . . . . . . . . . . . . . . . . 233
T ire mobility kit . . . . . . . . . . . . . . . . . . . . . 234
Replacing w heels . . . . . . . . . . . . . . . . . . . . 236
Spa re tire 241
Fuses .... .. .. .. ............... .. .. 243
Replacing fuses . . . . . . . . . . . . . . . . . . . . . 243
Drive r side cockpit fuse assignment
Front passenger side cockpit fuse 2
44
ass ignment . . . . . . . . . . . . . . . . . . . . . . . . 245
Luggage compartment fuse assignment . 245
Emergency situations . . . . . . . . . . . . 247
Genera l . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Start ing by pus hing or tow ing . . . . . . . . . . 247
Start ing with jumper cables . . . . . . . . . . . 247
U se of jumper cables . . . . . . . . . . . . . . . . . 248
T ow ing with a tow t ruck . . . . . . . . . . . . . . 249
Raising the vehicle . . . . . . . . . . . . . . . . . . . 251
Accessories and Technical Data . 253
Technical data . . . . . . . . . . . . . . . . . . . . 253
Vehicle s pec if ic at io ns . . . . . . . . . . . . . . . . 253
Notes abo ut technic al data . . . . . . . . . . . . 253
Dimens ions. . . . . . . . . . . . . . . . . . . . . . . . . 253
3

a co ,...,
N
" N ,...,
0 00 <.,;) '<I'
Economy tip s
In certain situations, economy tips appear auto­
matica lly for a short time in the efficiency pro­
gram~ fig. 10. If you fo llow these economy tips,
you can reduce your vehicle's fuel consumption.
To turn an economy t ip off immed iately after it
appears, press any button on the mult ifunction
steering wheel.
(D Tips
- If you erase the data in the efficiency pro­
gram, the values in the on-board computer
will also be reset.
- Once you have turned an economy tip off, it
will only appear again after you turn the ig ­
nition on again .
- The economy tips are not displayed in every
instance, but rather in intervals over a peri­
od of time.
Odometer
Fig. 11 Instrument cluster: odometer and reset button
The display of distance dr iven is shown i n m iles
"mi" or ki lomete rs " km" . The units of meas ure­
ment (kilometers/miles) can be changed in the
I nfotainment system.
Trip odometer and odomete r
The trip odometer shows the distance driven
since it was last reset. It can be used to measu re
short distances.
The trip odometer can be reset to zero by press­
ing
the ~ reset button .
The odometer shows the total distance that the
veh icle has been driven .
Driver in form atio n syst em
Malfunction indicator
If there is a malfunction in the instrument clus­
ter,
DEF will appear in the trip odometer disp lay.
Have the malfunction corrected as soon as possi­
ble.
Time/date display
T he date, time of day and time and date format
can be set in the Infotainment system. Refer to
the Infotainment system operating manual for
instructions.
When you open the driver's door, the date and
time appear in the instrument cluster display for
30 seconds.
Boost, shifting and
engine oil temperature
indicators
Applies to: vehicles with boost, shifting and engine oil tem­
perature indicators
Fig . 1 2 Ins trume nt clus ter: boost, shifting and engine oil
t e mp erat ure indicators
.,. Turn the menu thumbwheel on the steer ing
wheel unt il
La p time r appears in the instru­
ment cluster display .
@ Boost pressu re indic ator
The current engine load (meaning the current
boost pressure) is indicated by a bar.
@ Shifting in dicator
The shifting indicator is only visible when shifting
gears in tiptronic mode
Q page 78. Green LEDs
turn on as the engine RPMs increase. The LEDS
flash red at speeds near the RPM limit . Shift to
the next h ighest gear at the right time.
.,.
23

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 00 \.J '<t
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 215. 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

a co .... N
" N .... 0 00 \.J -<t
Trailer towing Driving with a trailer
General information
Your veh icle is primar ily intended for transport­
ing people and luggage. However, if you dr ive
with a trailer , follow the technical requirements,
the operation and driving tips, and the legal reg­
u lations.
Driving with a trailer affects the vehicle 's fuel
consumption, performance and wear. It also re­
quires highe r concentration from the driver.
A WARNING
Do not transport any people in a trailer due to
the risk of fatal injury.
Technical requirements
Certain requirements must be met when towing
a trailer.
Trailer hitch
Only use a trailer hitch with a removab le ball
hitch mount and ball hitch. The trailer hitch must
be perm itted for the vehicle, the trailer and the
permitted total weight of the trailer being
pu lled. Above all, it must be secure ly and safe ly
attached to the vehicle trailer.
Never mount a trailer hitch on the bumper. The
trailer hitch must be mounted in a way that does
not impair the function of the bumper. Do not
make any changes to the exhaust system and the
brake system.
Check regularly if the trailer hitch is securely
mounted. A lways follow the instructions given by
the trai ler hitch manufacturer .
Trailer brakes
If the tra iler has its own brake system, then fol­
l ow the manufacturer specifications. However,
the brake system on the trailer must never be
connected to the vehicle brake system.
Trailer towing
Engine cooling system
Driving with a trailer means a higher load on the
engine and the cooling system. The coo ling sys­
tem must be designed for additiona l load and
contain enough coo lant
i::> @ .
@ Note
Longer inclines cannot be driven without a
suitab le cooling system, especia lly if t he out­
side temperatures are high . otherwise, this
increases the risk of engine damage.
Operating instructions
Several things must be noted when towing a
trailer.
Towing capacity
Your vehicle can only be operated with class 1 or
class 2 trailers.
Load distribution
Poor cargo load and distribut ion can negatively
impact vehicle handling.
- Store objects preferably in the vehicle luggage
compartment . The vehicle should always carry
the heaviest poss ible load and the trailer
should have the lightest possible load.
- Distribute the load in the trailer so that the
heavy objects are as close to the axle as poss i­
b le.
- Secure objects from sl iding out of place .
- Ut ilize the maximum permitted tongue weight
if possible .
Tires
Set the tire pressure on your vehicle for a "full
load"; see the tire pressure sticker
c::>page 215.
If necessary, also adjust the tire pressure on the
trailer according to the manufacturer's recom­ mendat ion .
Winter tires should be mounted on the vehicle and on the trailer during winter temperatures.
Outside mirrors
If you cannot see the tra ffic behind the trailer
with the standard exterior mirrors, then you
81

a co ,...,
N
" N ,...,
0 00 <..:l '<I"
On Board Diagnostic
System (OBD)
The On-Board Diagnostic System monitors the
engine and transmission components that influ­
ence emissions.
F ig . 178 Footwell o n le ft s ide of th e vehicle: con nectio n
port fo r th e On -Board Diagnostic System (OBD)
On -Board Diagnostic S ystem
Eng ine data can be read out using a special test
device at the On-Board D iagnost ic System con·
nection port
9 fig. 178.
Ind icat or light
If thE' ¢..ift indicator light blinks or turns on, there
is a malfunction that is causing poor emissions
quality and that could damage the catalytic con­
verter .
Drive s lowly to an authorized Audi dealer or au­
thor ized Audi Service Facility to have the mal­
function corrected .
The indicator light can also turn on if the fuel fill­
er cap is not closed correct ly
9 page 190 .
A WARNING
Incorrect use of the connection port for the
On-Board Diagnostic System can cause mal­
functions, which can then result in acc idents
and ser io us injuries .
- Only allow an author ized Audi dealer or au­
tho rized Aud i Serv ice Facility to read out the
engine data.
-
Chec king and Filling
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
For wo rk in the engine com part ment , such a s
che cking and filling fluids, there i s a ris k of i n­
jur y, sc alding, a cci dent s, and b urn s. For t his
r easo n, foll ow all the w arnings and g en e ral
s afe ty pre ca ution s pro vided in the f ollowing
in ­
formati on. The engine compartm ent i s a dan­
ge rou s area in the vehicle .
9 &..
A WARNING
-Turn the engine off.
- Sw itch the ignition off.
- Set the parking brake.
- Select the P se lector lever position .
- Let the eng ine cool down .
- Never open the hood when there is steam or
coolant escaping from the engine compart­ ment, because there is a risk that you could
be burned . Wait unt il no steam or coolant is
escaping.
- Keep children away from the eng ine com­
partment .
- Never sp ill fluids on a hot engine. These flu­
ids (such as the freeze protection contained in the coolant) can catch fire.
- Avoid short c ircuits in the electrical system .
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which increases the ris k of personal injury .
- Never open the cap on the coolant expan­
sion tank when the engine is warm . The
coo ling system is under pressure.
-To protect your face, hands, and arms from hot steam or coolant, cover the cap with a
large cloth when opening .
- Do not remove the eng ine cover under any
circumstances . This increases the risk of
bu rns .
- If tests need to be performed with the en­
g ine runn ing, there is add it iona l danger due
to mov ing components (such as the ribbed
~
193

Wheel s
Glossary of tire and loading
terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power steer­
ing , power brakes , power win­
dows , power seats, radio, and
heater, to the extent that these
items are available as factory-in­
stalled equipment (whether in­
stalled or not).
Aspect ratio
means the ratio of the height to
the width of the tire in percent. Numbers of 55 or lower indicate a
low sidewall for improved steer­
ing response and better overall
handling on dry pavement .
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the rim.
Bead separation
means a breakdown of the bond
between components in the bead.
208
Cord
means the strands forming the
plies in the tire.
Cold tire inflation pressure
means the t ire pressure recom­
mended by the vehicle manufac­
turer for a tire of a designated
size that has not been driven for
more than a couple of miles (kilo ­
meters) at low speeds in the
three hour period before the tire pressure is measured or adjusted.
Curb weight
means the weight of a motor ve­
hicle w ith standard equipment in­
cluding the maximum capacity of
fuel, oil, and coolant, ai r condi­
tioning and additional weight of
optional equipment.
E x tra load ti re
means a tire designed to operate
at higher loads and at higher in­
flation pressures than the corre­
sponding standard tire. Extra load
tires may be identified as "X L",
"
l" "EXTRA LOAD" or "RF" on X I I
the sidewall. .,.

Wheels
Use the tire pressure specified for
a normal vehicle load when the
vehicle is partially
loaded ¢ table
on page 217 .
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 . 190 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 224 or ¢ page 226.
~check the pressure in the emer­
gency tire*/spare tire*. Always
maintain the maximum temper­
ature that is specified for the
tire.
216
& 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 218,
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.

Wheels
A WARNING
Please note the important safe ­
ty precautions regarding tire
pressure
¢ page 215 and load
limits¢ page 218.
Tires and vehicle load limits
There are limits to the amount of
load or weight that any vehicle
and any tire can carry. A vehicle
that is overloaded will not handle
well and is more difficult to stop. Overloading can not only lead to loss of vehicle control, but can al ­
so damage important parts of the
vehicle and can lead to sudden
tire failure, including a blowout
and sudden deflat ion that can
cause the vehicle to crash .
Your safety and that of your pas ­
sengers also depends on making
sure that load limits are not ex­
ceeded . Vehicle load inc ludes ev­
erybody and everything in and on
the vehicle. These load limits are
technically referred to as the vehi­
cle's
Gross Vehicle Weight Rat­
ing
("GVWR") .
T he "GVWR" inc ludes the weight
of the basic vehicle, all factory in­
stalled accessories, a full tank of
fuel, oil, coolant and other fluids
2 18
plus maximum load . The maxi­
mum load includes the number of
passengers that the vehicle is in­
tended to carry ("seating capaci­
ty") with an assumed weight of
150 lbs . (68 kg) for each passen­
ger at a designated seating posi­
tion and the total weight of any luggage in the veh icle. If you tow
a trailer, the weight of the trailer
hitch and the tongue weight of
the loaded trailer must be includ­ ed as part of the vehic le load.
The
Gross Axle Weight Rating
("GAWR") is the maximum load
that can be applied at each of the
vehicle's two axles .
The fact that there is an upper limit to your vehicle's Gross Vehi ­
cle Weight Rating means that the
total weight of whatever is being
carried in the vehic le (inc luding
the weight of a trailer h itch and
the tongue weight of the loaded
trailer) is limited . The more pas­
sengers in the vehicle or passen­
gers who are heavier than the
standard weights assumed mean
that less weight can be carried as luggage .
The Gross Veh icle We igh t Ra ting
and the Gross Axle Weight Rat ing
.,.

a co .... N
" N .... 0 00 \.J '<t
@ For the sake of the environment
Reinstall summer tires at the appropriate
time, because they provide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear and fuel
consumption.
(D Tips
You can also use all season tires instead of
winter tires. Please note that in some coun­
tries where winter tires are required, only
winter tires with the
& symbol may be per­
mitted .
Snow chains
Snow chains not only improve the driving in win­
ter road conditions, but also the braking .
.,. Only install snow chains on the front wheels.
This applies also to vehicles with all wheel
drive*.
.,. Check and correct the seating of the snow
chains after driving a few feet, if necessary. Fol­
low the instructions from the manufacturer .
.,. Note the maximum speed of 30 mph (SO km/
h). Note the local regulations.
Use of snow chains is only permitted with certain
rim/tire combinations due to technical reasons.
Check with an authorized Audi dealer or author­ i zed Audi Service Facility to see if you may use
snow chains.
You must remove the snow chains on roads with­
out snow. Otherwise, you could impair driving
ability and damage the tires.
A WARNING
Using incorrect snow chains or installing snow
chains incorrectly can result in loss of vehicle
control, which increases the risk of an acci­
dent.
@ Note
- Snow chains can damage the rims/wheel
covers* if the chains come into direct con­
tact with them . Remove the wheel covers*
first . Use coated snow chains.
Wheels
- Using snow chains that add more than 0.4
inch (10.5 mm) of height can severely dam­
age the wheel housings and other vehicle
components.
- Do not install and use snow chains if there is
a malfunction in the air suspension*, be­
cause the vehicle height will be very low. If
you drive with snow chains anyway, the
wheel housings and other vehicle compo­
nents can be severely damaged .
(D Tips
When using snow chains, it may be useful to
switch on sport mode
c> page 121.
Low-profile tires
Applies to: vehicles with low-profile tires
Compared to other tire/rim combinations, low­
profile tires offer a wider tread surface and a
larger rim diameter with shorter tire sidewalls.
This results in an agile driving style. However, it
may reduce the level of comfort and increase
road noise when driving on roads in poor condi­
tion.
Low-profile tires can become damaged more
quickly than standard tires when driving over
large bumps, potholes, manhole covers and
curbs. Therefore, it is particularly important to
maintain the correct tire pressure
c>page 215.
To reduce the risk of damage to the tires and
rims, drive very carefully on poor roads.
Check your wheels regularly every 2,000 mi
(3,000 km) for damage. For example, check for
bulges/cracks on the tires or deformations/
cracks on the rims.
After a heavy impact or damage, have the tires
and rims inspected or replaced immediately by
an authorized Audi dealer or authorized Audi
Service Facility.
Low-profile tires can wear out faster than stand­
ard tires.
Uniform tire quality grading
-Tread wear
221

a co ,...,
N
" N ,...,
0 00 <.,;) '<I'
significantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-inf la­
tion also reduces fuel efficiency and tire tread
life, and may affect the vehicle's handling and
stopping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re­
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres ­
sure telltale .
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the sys­
tem is not operating properly . The TPMS mal­
function indicator is combined with the low tire pressure telltale . When the system detects a
malfunction, the telltale will flash for approxi­
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal­
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly . Always che ck the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
Wheels
If the tire pressure monitoring system
indicator appears
Applies to: vehicles with Tire Pressure Monito ring System in­
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
Fig. 191 Ins trumen t cluster : indicator light w it h message
Using the ABS sensors, the tire pressure monitor­
ing system compares the tire tread circumfer­
ence and vibration characteristics of the individu­
al tires.
If the pressure changes in one or more
tires, th is is ind icated in the instrument cluster
display with an indicato r light
[I] and a message .
If only one tire is affected, the location of that
tire will be indicated.
The tire pressures must be stored in the Infotain­
ment system again each time the pressures
change (switching between partial and full load
pressure) or after changing or replacing a tire on
your
vehicle ~ page 224. The tire pressure moni­
toring system only monitors the tire pressure you
have stored. Refer to the tire pressure label for
the recommended tire pressure for your vehicle
~ page 215, fig . 190.
Tire tread circumference and vibration character­
istics can change and cause a tire pressure warn­
ing if :
- the tire pressure in one or more tires is too low
- the tire has structural damage
- the tire was replaced or the tire pressure was
changed and it was not stored
~ page 224
- the spare tire* is installed
223