2018 AUDI A8 four wheel drive

Wheels
-The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
- Under certain conditions (such as a sporty
driving style, winter conditions or unpaved
roads), the tire pressure monitoring system
indicator may be delayed .
- Do not use run-flat tires on your vehicle. Us­
ing them when not permitted can lead to
vehicle damage or accidents .
(D Tips
- The tire pressure monitoring system can al­
so stop working when there is an ESC mal­
function .
- Using snow chains may result in a system
malfunction.
- The tires with the identification
"AO" or
"RO" ¢ page 290 have been matched with
your Audi tire pressure monitoring system.
Using these tires is recommended.
Storing tire pressures
Applies to: AB, S8
If the tire pressure changes or a tire is replaced,
it must be confirmed in the Infotainment sys­
tem .
.,. Make sure before storing that the tire pressures
of all four tir es meet the specified values and
are adapted to the
load ¢ page 291 .
.,. Switch the ignition on .
.,. Select : the ICARI function button > Car Systems
control button > Service & control > Tire pres­
sure monitor> Store tire pressure > Yes, store
now.
(D Tips
Do not store the tire pressures if snow chains
are installed. Otherwise the system could
malfunction.
302
Tire Pressure Monitoring System (SB plus)
ill General notes
Applies to: S8 plus
Each tire, including the spare (if provided),
shou ld be checked monthly when cold and inflat­
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size ind icated on
the veh icle placard or tire inflat ion pressure la­
bel, you should determine the proper tire infla­
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure mon itor ing system
(TPMS) t hat illuminates a low tire pressure tell­
ta le when o ne or more of your tires is significant­
l y under-inflated. According ly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure . Driving on a signifi ­
cant ly under-inflated tire causes the tire to over­
heat and can lead to tire failure . Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop ­
ping ability .
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re­
spons ibility to maintain correct t ire pressure,
even if under-inflation has not reached the level
to trigge r illumination of the TPM S low t ire pres­
su re te lltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to ind icate when the sys­
tem is not operating prope rly . The TPM S mal­
function indicator is combined with the low t ire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi­
mately one minute and then remain continuously
illuminated. This sequence wi ll 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 ..,_

u. co .... N
" N .... 0 0 :c ' 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 check 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.
Description
Applies to: 58 plus
The tire pressure monitoring system monitors
the pressure in the four tires when driving.
The system uses sensors that measure the tem ­
perature and pressure in the tires . The data is
sent from these sensors to the control module by
radio frequency.
The Tire Pressure Monitoring System shows the
current pressures and temperatures of the tires
in the Infota inment system
c:> page 303 . It also
compa res the current tire pressures with the
stored tire press ures and gives a warning in the
driver information system if the tire pressure is
different from what is stored
c:> page 304.
The system does not detect if the stored tire
pressures match the recommended tire pres­
sures.
- Every time the tire pressures change, for exam-
ple when the load in the vehicle changes,
- after replac ing a tire, or
- if wheels with new wheel sensors are used,
you must store the tire pressures again
c:> page 304.
A WARNING
-The tire pressure mon itor ing system assists
the driver in monitoring tire pressures. The
dr iver is responsible for having the tires in­
flated to the correct pressure.
- Do not change the tire pressure when the
temperature of the tire is extremely high.
T his cou ld result in serious damage to the
t ir e and even cause the tire to burst, in­
creasing the risk of an accide nt.
Wheels
-A tire with low pressure flexes more . This
heats the tire up too much. This could cause
the tread to separate and even cause the
tire to burst, increasing the risk of an acci­
dent.
- The Tire Pressure Monitoring System does
not warn you of damage or defects in the
tire construct ion that could cause the tire to
burst, for example. Inspect your tires regu­
larly.
@ For the sake of the environment
Low tire pressure increases fuel consumption
and tire wear.
(D Tips
-The pressure of the spare t ire* is not mon i­
tored.
- If tires are replaced, the sensors/va lves do
not need to be removed or replaced. Just re­
placed the valve stem and, if necessary, the
valve and the whee l electronics . If you have
questions, see an authorized Audi dealer or
authorized Audi Service Facility.
Displaying tire pressures/temperatures
Applies to: 58 plus
Requirement: the ignition must be switched on.
.. Select: the I CAR! funct ion button > Car systems
> Service & control > Tire pressure monitor >
Display tire pressure .
The current tire pressures are shown in green and
yellow numbers in the Infotainment system:
-Green: the current tire pressure and the spec i­
fied tire pressure are approx imately the same .
-Yellow: the current tire pressure is too low
compared to the specified tire pressure .
The specified tire pressure is the last tire pres ­
sure that was stored
c:> page 304 .
Note that the tire pressure also depends on the
temperature of the tire . The tire pressure in­
creases as the engine becomes warmer while
driv ing.
.,.
303

Emergency assistance
6. Remove the wheel with the flat tire and then
install
the spare r::!> page 318.
7. Tighten all wheel bo lts light ly .
8. Lower the veh icle w ith the jack.
9. Use the wheel bolt wrench and firmly t ighten
a ll whee l bolts
r::!> page 315 .
10 .
Replace the decorative wheel cover* .
11. D eactivate the vehi cle jack mode in the MMI:
ICAR I fu nction bu tton > Car systems con trol
b utt on
> Servicing & c heck s > Air susp .: ja ck
mode > Off.
The vehicle jack mode switches off a utomat ically
at speeds above
10 k m/ h.
_& WARNING
Alw ays read and fo llow all WARNI NGS and in ­
formation
c::> .&. in AB: Raising the vehicle on
poge316an d
¢page 319.
After changing a wheel
A wheel change is not complete without the do ­
ing the following.
• A lway s store the vehicle tool kit, the jack* a nd
t he repl aced t ire in the luggage compartment
r::!:> poge 213.
• Check the tire pre ssure on the spare whee l im ­
med iate ly after mount ing it.
• As soon as possible, have th e tightening tor­
ques
on all wheel bolts checked with a torque
wrench. The correct tightening torque is
90 ft
lb
(120 Nm) .
• Have the fla t tire replaced as soon as possible .
(D Tips
- If you notice that the whee l bolts are cor­
r oded and diffic ult to t urn wh ile cha nging a
tire, they should be rep laced before you
c hec k th e tighte ning torque .
- Drive a t reduced speed until you have the
tightening torques c hec ke d .
- After changi ng a wheel, the ti re pressure in
a ll four tires must be chec ked/corrected and
the tire pr ess ure mon itoring indicato r mus t
be store d in t he MM I
r::!:> page 302 .
314 Decorative wheel covers
App
lies to : vehicles with decorative w heel covers
The decorative wheel covers must be removed
first to access the wheel bolts.
F ig. 273 Changing a whee l: Remov ing t he whe el cover
Removing
• Insert the hook (p rovided w ith the vehicle tool
kit) i n the hole in the wheel hu b cover .
• Pull off the decorative wheel cover r::!:> fig. 273 .
Wheels with wheel bolt caps
Applies to: vehicles with w heel bolts with caps
The cops must be removed first from the wheel
bolts before the bolts con be unscrewed.
Fi g. 274 Chang ing a wheel: remov ing the w heel bo lt caps
Removing
• Push the plastic clip (prov ided with the vehicle
tool k it) over the whee l bolt cap until the inner
reta iners on the clip a lign with t he edge of the
cover.
• Remove the cap with t he plastic clip (veh icle
t oo l kit )
r::!> fig. 274.
Refitt ing
• Place the caps over the whee l bolts and push
them back on .