ECO mode AUDI S6 2010 Owner's Guide

-----------------------------------------~C~ h~il ~d ~ S~a _!fe ~ t !;YL __
and for the different models of the same kind of child restraint
offered by child restraint manufacturers.
The weight ranges for the individual types, makes and models of ch ild
restraints that the NHTSA has specified in the Safety Standard
together with the weight ranges of typical infants and typical 1 year­
old child have been stored in the control unit of the Advanced Airbag
System. When a child restraint is being used on the front passenger
seat with a typical 1 year-old chi ld, the Advanced Airbag System
compares the weight meas ured by the weight sensing mat with the
information stored in the electronic control unit .
The electronic contro l unit a lso registers the tension on the front
passenger safety belt. The tension on the safety belt for the front
passenger seat will be different for an adult who is properly using the
safety belt as compared to the tension on the belt when it is used to
attach a child restraint to the seat . The sensor below the latch for the
safety belt for the front seat passenger measures the tension on the
belt. The input from this sensor is then used with the weight to
"decide", whether there is a child restraint with a typical 1 year-old
child on the front passenger seat and whether or not the airbag must
be turned off .•
Child restraints and Advanced Airbags
Regardless of the child restraint that you use, ma ke sure that it has
been certified to meet United States Federal Motor Vehicle Safety
Standards and has been ce rtified by its manufacturer for use with an
airbag . Always be sure that the child restraint is properly installed at
one of the rear seating positions. If in exceptional circumstances you
must use it on the front passenger seat, carefully read all of the infor­
mation on ch ild safety and Advanced Airbags and heed all of the
app licab le WARNINGS. Make certain that the child restra int is
correctly recognized by the weight-sensing mat inside the front
passenger seat, that the front passenger airbag is turned off and that
the airbag status is always correctly signaled by the
PASSENGER AIR
BAG OFF
light.
Controls and equip­ ment Safety first Vehicle operation
Many types and models of child restra
ints have been available over
t he years, new models are introduced reg ularly incorpo rating new
and improved designs and older models are taken out of product ion.
Chi ld restraints are not standardized. Child restraints of the same
type typ ically have d ifferent weights and sizes and differe nt 'foot­
prints,' the size and shape of the bottom of the child restraint that
sits on the seat, when they are installed on a vehicle seat . These
differences make it virtually impossib le to certify compliance with
t he requirements for advanced airbags with each and every chil d
restra int that has ever been sold in the past or will be sold over the
course of the useful life of your vehicle.
For this reason, the United States Nationa l Highway Traffic Safety
Administration has published a list of specific type, makes and
mode ls of child restra ints that must be used to cert ify compliance of
the Advanced Airbag System in yo ur vehicle with the suppression
requirements of Federal Motor Veh icle Safety Standard 208. These
child restraints are:
A. Car beds, manufactured on or after September 1,
2004:
• Cosco Dream Ride 02-719
B. Rear facing child restraint systems,
manufactured on or after September 1, 2004:
(When the restraint system comes equipped with a removable base,
compliance has to be cert ified with or without the base) .
• Britax Handle with Care 191
• Century Assura 4553
• Century Smart Fit 4543
• Cosco Arriva 02727
• Evenflo Discovery Adjust Right 212
• Evenflo First Choice 204
• Graco Infant 8457
Vehicle care Do-it-yourself service Technical data

Intelligent technology
--------------------------------------------------' '----'----
fore-and-aft and lateral directions, the brake pressure and the
steering angle are all measured.
The direction in which the driver wishes to travel is determined with
the aid of the steering angle and vehicle speed and is continually
compared with the actual behavior of the vehicle. If the two do not
match, for example , when the vehicle starts hydroplaning on a wet
road, ESP will automatically brake the appropriate wheel to correct
the problem.
The vehicle is then stabilized by the forces acting on the wheel during
braking. If the vehicle is
oversteering (rear tends to skid out of the
turn), the brakes are mainly applied on the wheel that is on the
outside of the curve. In the case of a vehicle that is
understeering
(tendency to slide out of the curve), the brakes are applied at the rear
wheel that is on the inside of the curve. An acoustic signal indicates
when ESP brake application cuts in =>
&.
The system operates across the entire speed range in combination
with the ABS system =>
page 244. If the Anti-Lock Brake System
(ABS) malfunctions, the ESP will be out of action as well.
Activating
When you turn on the engine, ESP will automatically be activated and
will perform a self-test . As soon as the test is completed, the system
is in normal operating mode.
You can activate a deactivated ESP or deactivated ESP/ ASR if required
by pressing the=>
page 240, fig. 201 button. When they are acti­
vated, the message
ESP/ASR on appears briefly in the display .
Deactivating
The ESP should normally be activated all the time. If necessary , you
can deactivate Anti-Slip Regulation (ASR) or the Electronic Stabiliza­
tion Program (ESP) by pressing the button =>
page 240, fig. 201.
• Deactivating ASR: Tap the but ton . In certain excep tional situa­
tions (e.g. driving with tire chains) , the Anti-Slip Regulation (ASR) can
be deactivated=>
page 242 . The message ASR off appears in the
display as well.
Controls and equip­ ment Safety first Vehicle operation •
Deactivating ESP/ASR
Press the button for more than 3 seconds .
With the ESP/ASR deactivated, the ESP check light comes on, see
=>
page 14. The message ESP switched off appears in the display as
well.
& WARNING
The Electronic Stabilization Program is nevertheless subject to the laws of physics. It is particularly important to pay attention to
this fact on wet and slippery roads. It is therefore important that
you always adapt your driving to the condition of the road and traffic conditions. Do not allow the increased safety provided by
the Electronic Stabilization Program system to lull you into
accepting additional safety risks. •
Electronic differential lock (EDL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
General notes
The electronic differential lock (EDL) helps the car to start moving,
accelerate and climb a gradient on surfaces providing poor or almost
no grip . Without EDL, this would be difficult, if not impossible .
How the system works
The EDL operates automatically . It monitors the rotational speed of
the drive wheels on an axle with the help of the ABS sensors
=>
page 244 . If a noticeable difference in rotational speed between
the drive wheels on one axle is detected (e.g. on slippery ground
on
one side),
the spinning wheel is braked, thereby transferring power to
the othe r drive wheel or wheels (all-wheel drive). This is done up to a
speed of about 60 mph (100 km/h) . Noises from the brake system
signal that wheel spin is being controlled.
Vehicle care Do-it-yourself service Technical data

Intelligent technology
--------------------------------------------------' '----'----
The ASR should normally be activated all the time . Only in certain
except ional situations when some slip is desirable does it make sense
to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck.
When the abnormal s ituation is over, you should activate the ASR
again .
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[I] Tips
To ensure that the ASR works properly, all four whee ls must be fitted
with ident ical tires . Any differences in rolling radius of the tir es can
cause the system to reduce engine power when this is not desired.
See also=>
page 305, "New tires and replacing tires and wheels". •
Braking
General information
What affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automob iles are still subject to wear ,
depending largely on operating conditions and driving habits=>& .
On vehicles that are either driven mostly in stop-and-go city traffic or
are driven hard, the brake pads should be checked by your authorized
Aud i dealer more often than specified in the
Warranty & Mainte-
Controls and equip­ ment Safety first Vehicle operation nance booklet.
Failure to have your brake pads
inspected can result
in reduced brake performance .
On steep slopes, you should use the brak ing effect of the engine . This
way, you prevent unnecessary wear on the brake system. If you must
use your brakes, do not hold the brakes down continuously. Pump the
brakes at intervals.
Noises may occur when brak ing depending on the speed , braking
force and outside cond it ions such as temperature and humidity.
Moisture or road salt
If you are driving faster than 50 mph (80 km/h) and the windshield
wipers are on, the brake pads will briefly touch the brake discs in
regular intervals so as to improve reaction t ime when braking on wet
surfaces. You, the driver, will not notice anything.
Under certain cond it ions, for example , when driving through water or
very heavy rain, or even after washing your vehicle, the braking effect
can be reduced due to moisture (or in freezing conditions ice) on the
brake pads. A few careful brake applications should dry off the brake
pads or remove any ice coatings.
The effectiveness of the brakes can be reduced when the vehicle is driven on a sa lt-covered road and the brakes are not used. Here too,
you should clean off accumulated salt coating from brake discs and
pads with a few careful applications of the brake=>& .
Corrosion
There may be a tendency for dirt to build up on the brake pads and
corrosion to form on the discs if the car is not dr iven regularly or only
for short trips with little use of the brakes.
If the brakes are not used frequently, or if corrosion has formed on
the discs, it is advisable to clean off the pads and discs by braking
fi rm ly a few times from a moderately high speed=>& .
Faults in the brake system
If you should notice a sudden increase in brake pedal travel, then one
of the two brake circuits may have failed=>& . .,
Vehicle care Do-it-yourself service Technical data

Driving and environment
(I] Tip s
The consumption estimates as pub lished by ENV IRONMENTAL
PROTECTION AGENCY (EPA) and Transport Canada may not corre­
spond to your actual consumption on the road, which will vary
depending upon vehicle load and speed, road and weather conditions,
trip length, etc. •
Drive smoothly and keep a lookout ahead
Vehicles use the most fuel when they are accelerating .
-Avo id unnecessary accelerating and braking.
Vehicles use the most fue l when they a re accele rating. If you antici­
pate what is going to happen next, you will need to brake less and,
thus, accelerate less. Let the vehicle coast whenever possible -for
example when you see that the next traffic l ight is red. •
Avoid full throttle
Driving at moderate speeds saves fuel and improves your
mileage.
- Try and keep well below your car's maximum speed .
Accelerating gently reduces fuel consumption, engine wear, and does
not disturb the environment.
Fuel consumption, exhaust emissions and engine noise increase
disproportionately at high speeds . If you drive at approx imately three
qua rters of top speed, fuel consumption will be reduced by one half.
Never drive faster than the posted speed limit and weather condi­
tions permit.
a Reducing unnecessary idling
Even when your car is just idling it burns up fuel.
-
Shut the engine off when yo u are not driving the vehicle.
- Do not warm up the vehic le by letting the eng ine run at
idle.
It makes sense to shut off the engine in traffic jams, when waiting for
trains to pass at rai lroad crossings, o r at traffic lights that have long
wa its on red . Turn ing the eng ine off for just 30-40 seconds saves
more fuel than is burned starting the engine again.
It takes a long t ime for the engine to warm up fully when it is running
at idle. Howeve r, wear and noxious emissions are espec ially high
when the eng ine is wa rm ing up. So you sho uld d rive away as soon as
you start the engine and avoid running at hig h rpms while the eng ine
is still warming up.
0 Note
Do not leave engine idling unattended after starting . If warning
lights should come on to indicate improper operation, they would go
unheeded. Extended idling also produces heat, which cou ld result in
overheat ing o r othe r damage to the vehicle or other p roperty. •
Regular maintenanc_e ____________ _
A badly tuned engine unnecessarily wastes a lot of fuel .
- Have your vehicle serviced at regular intervals .
By having yo ur vehicle regularly se rviced by an Audi dealer helps to
ensure that it runs properly and economically . T he condition of your
vehicle not only a ffects its safety and ability to ho ld its va lue, it a lso
affects
fu el con sumption .
Check your o il e ach tim e you fill you r tank.
~

Trailer towing
"---------------------------------------------------
Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger transpor ­
tation .
If you p lan to tow a t railer, p lease remember that the additional load
w ill affect durability, economy and performance.
Tr ailer towing not on ly p laces mo re s tress on the vehicle, it also calls
for more concentration from the driver.
For this reason, a lways follow the operating and dr iv ing inst ructions
prov ided and use common sense .
0 Note
If you are going to tow a trailer, you must activate the tra iler ope ra­
tion mode =>
page 168, "Towing a tra iler". •
Technical requirements
Trailer hitch
Use a we igh t-car rying h itch co nform ing to the gross tra iler we ig ht.
The h itch must be suitab le for your vehicle and trailer and must be
mou nted securely o n th e vehi cle's ch assi s at a
techni cally sound loc a­
tion . Use only a trailer hitch with a removab le ball mount. Always
check wit h the t railer h itch manufactu rer to make sure that yo u are
using the correct h itch .
Do not use a bumper hitch.
The h itch mus t be installed in such a way t hat it does not in terfe re
w ith t he impact-absorb ing bumper system. No modifications shou ld be made to t
he veh icle exha ust and bra ke systems. From t ime to
time, check that a ll hitch mounting bo lts rema in securely fastened.
W hen you are no t tow in g a tra ile r, remove the t railer hit ch ball
mount. This prevents the hitc h from caus ing damage should your
vehicle be str uck from behind=>& .
Trailer brakes
If your trail er is e quipped w ith a b raking system, che ck to be s ure t hat
it conforms to all regulations.
T he tra ile r hydrau lic brake system m ust not be directly connected to
t he vehicle's hyd raulic b rake sys tem .
Safety chains
Always use safety chains between your veh icle and t he tra ile r.
Trailer lights
Trailer lights must meet all regulations. Be sure to check w ith your
Audi de aler fo r corr ec t wir ing , sw itches and re lays.
Mirrors
If you are unab le to see t he t raff ic be hind you using t he regular
outs ide mirrors, then you
must install extended mi rrors. It is impor­
t an t th at yo u
always ha ve clear vi sion to the re ar.
& WARNING
After removing the trailer hitch, do not store it in your vehicle. In
case of sudden braking , the hitch could fly forward and inju re you
or your passengers. •

lffll __ C_h_ e_c _k _i_n -=g ,.,__ a_n_ d_ f_ i_ l _li _n _,g:,_ __________________________________________ _
Engine cooling system
Coolant
The engine coolant performs two functions: it keeps the
engine from o ve rheat ing and it prote cts the engine from
free zing in the winter .
The cooling system is sealed and genera lly requ ires little attention .
Th e cooling system has been fi lled a t the factory w it h a permanent
coo lant which does not need to be changed. The coolant consists of a
mixture of water and the man ufacturer's glycol-basedcoo lant add i­
tive Gl2++ a ntifreeze with ant i corrosion additives (50% for USA
mode ls; 60% for Canadian mode ls). This mixture bot h assures the
necessary frost protec tion and p rotects metal components i n the
engine's cooling system from corrosion and scaling . It a lso ra ises the
boiling point of the coolant.
Do not reduce the concentration of the coolant in the summer by
adding p lai n water .
The proport ion of coolant additive must be at
least 50 % but not more than 60 %
to maintain antifreeze protection
and coo ling efficiency. If the coolant frost protect ion is too low, the
coo lant co uld freeze and damage the veh icle heating and eng ine
cooling system .
For year-ro und d riving, antifreeze is added at t he factory for temper­
atures down to:
• - 31°F( -35°C)USA
• - 40 °F ( -40 °C) Canada .
You can mix the G12 ++ coo lant additive with other add it ives (G12 + or
G 12) . Always check with yo ur a utho rized Aud i dea ler .
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS=>
& in "Working in the engine
compartment " on
page 277.
0 Note
• Before winter sets in, have the coolant checked to see if the
coo lant additive in you r vehicle is s ufficient to meet the climate
condi tions. This is especially important if you live in a region where
the winter is extreme ly cold. If necessary, increase the proport ion of
c oo lan t add it ive to 60%.
• When adding coolant additive to your cooling system, remember:
- We recommend using only coo lant add it ive G 12++ (check the
label) for your vehicle . This coolant additive is available at autho­
r ized A ud i deale rs. Othe r ty pes of antifreeze can s ignifica ntly
reduce corrosion protection. The resulting corrosion can cause a
loss o f coolant and serious engine damage .
• Do not add any type of radiator leak sealant to you r vehicle's
eng ine coolant. Adding rad iator repair fl uid may adversely affect the
function and performa nce of your coo ling system and could resu lt in
d a mage not covered by your New Vehicle Limi ted W arranty. •
Checking the engine coolant level
The engine coolant level can be checked with a quick
glance .
Fig. 211 En gine
compa rtm ent : C oolant
ex pa nsio n tank ..

___________________________________________ C_ h _ e_c _k _ i_n -=g .._ a_n _ d_ f_i _ll _i _ n -=g '--- ........ 11'1
Brake fluid
Checking brake fluid level
The b rake f lu id l eve l can be checke d wit h a qui ck g lanc e.
Fig . 212 E ngine
compartment : Br ake
fluid re se rv o ir
Before you c heck a nythi ng in the eng ine compartment ,
always read and heed all WARNINGS~ & in "Working in
the e ngi ne comp art ment" on
page 27 7.
- Read t he bra ke flu id level from the bra ke fluid reservoir
~ page 287, fig . 212. The brake flu id level must be
between the " MIN" and " MAX" mar kings.
The brake fluid reservoir is locate d at the rear pa rtition of the engine
compartmen t on the left s ide=>
page 278 .
The f luid leve l may drop slightly after some time d ue to the auto ­
m atic a dju stment of t he b rake pads. This i s not c ause for ala rm.
If the brake flu id level falls
considerably be low the "M IN" mark, the
brake warni ng/ind icator light ( U.S. models :
BRAKE, Canadia n mo dels:
(0) ) will come on=> page 18 and=> page 26. Do not continue to
operate t he vehicle. The complete brake system sho uld be thoroug hly
chec ked by an au thor ized A ud i d eale r or othe r qualified fac ility and
the cause corrected.
If the brake fluid level is too low, the brake
Vehicle OP-eration
warning/ind icator light will illum inate . Contact an au thoriz ed Aud i
de aler
immediately .•
Changing brake fluid
H av e the b rake fluid chang ed by an expe rie nc ed t echni ­
CJ an.
B ra ke flui d absorb s moi stur e from the air. If the wa te r co nten t in t he
brake fl uid is too high, corros ion in the b rake system may res ult after
a pe riod of time. The boili ng po int of the brak e flu id will als o decrea se
co nsiderab ly and decrease brak ing perfo rmance.
Th erefore, the brake f lui d m ust be c hanged
every two years . Always
use new brake fluid w hich conforms to Fede ral Motor Veh icle Stan ­
dard "F MVSS 1 16 DOT 4" .
Th e br ake f luid reserv oir can be diffi cult to rea ch, there fore, we
recommend that you have the brake fluid changed by your authori zed
Audi dealer . Your deal er h as th e correc t tools, the rig ht bra ke flui d
and the know-how to do th is for you.
& WARNING
• Brake fluid is poisonous. It must be stored only in the closed
original container out of the rea ch of children!
• Brake
failure can result from old or inappropriate brake fluid .
Observe these precaution s:
- Use only b rake fluid that meets SAE specification
J 1703 and
conforms to Federa l Motor Vehicle Standard 116. Always check
with your authorized Audi dealer to make sure you are using
the correct brake fluid. The corre ct type of brake fluid is also
indicated on the brake fluid rese rvoir.
- The brake fluid must be new . Heavy use of the brakes can
c ause a vapor lo ck if the brake fluid is left in the system too
long . Thi s can seriously affect the efficiency of the brakes as
well as your safety. This could result in an accident .
~
Vehicle care Do-it-yourselt service Technical data

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
If you wish to improve comfort when operating the vehicle at
normal load (up to 3 o ccupants ), you can adjust tire pre ssures to
those specified for normal vehicle load . Before operating the
vehicle at maximum load, you must inc rease the tire pressures to
those specified for maximum vehicle load
=> & .
Bear in mind that the tire press ure monitoring system* can on ly
m oni tor the tire pressu res you have sto red . The system does no t
recogn ize the load condit ion of your vehicle.
T he effectiveness of the tire pressure monitoring system * w ill be
impaired if you store norma l load p ressu res b ut the n operate th e
vehicle at its maxim um loa d=> & .
Tire designation
See the illustration=> fig. 216 for the locat ion of the labe l on dr iver's
side B-p illar (colo r of the actu al labe l and ex act loc ation o n the
veh icle will vary slight ly) .
N ote that the following tab le is accurate at the time of going to press
and i s su bje ct to change. I n the even t of discrepancie s, t he tire pres­
sure label is located on the driver's side B-pillar always takes prece­
de nce.
The table below lists the recommended co ld tire inf lation pressures
fo r the Audi mode l covered by your Owner 's Literat ure at the vehicle's
capacity weight and t he tire sizes installed on the respective mode ls
as o rigina l equipment, or as a factory option.
Tire pressure front Tire pressure rear
Engine
(displace­
ment in liter) normal load
normal load
6-cylinder
3.0
6-cylinder
3 .2
245 /45 Rl 7 99H XL All Season
245 /40 R18 97H XL All Season
245/40 R18 97Y XL High Performance
255 /35 R19 96Y XL High Performance
245/ 45 Rl 7 99 H XL All Season
245 /40 R18 97H XL All Season
245 /40 R18 97Y XL High Performance
255 /35 R19 96Y XL High Performance
condition (up
to 3 occu- pants)
PSI
35
38
3 5 24 0
39 270
33 230
36
33
39
full load
condition
PSI kPA
38 260
41 280
3 5 260
44 300
36 250
39 270
36 250
44 300
condition (up
full load
to 3 occu- condition
pants)
PSI kPA kPA
32 220 270
35 240 42
290
3 2 220 38 260
33 230 45 310
30 210 36 250
33 230 39 270
30 210 36 250
33 230 45
310

-~_T_ i_ re _ s_ a_n _ d_ w_ h _e_ e_ ls _________________________________________________ _
(j)
®
®
@
@
U.S . DOT tire identification number
Audi Original tire
Sever snow conditions
Tire ply composition and materials used Ma ximum load rating
Treadwear, traction and temperature grades M axi mum pe rmissib le inflation pressure
The tires and rims are essential parts of the vehicle's design . The tires
and rims approved by Audi are specially matched to the characteris­
tics of the vehicle and can make a major contribution to good road holding and safe handling when in good condition and properly
inflated
~ & .
We recommend that all work on tires and wheels be performed by an
authorized Audi dealer . They are familiar with recommended proce­
dures and have the necessary special tools and spare parts as well as
the proper facilities for disposing of the old tires.
Authorized Audi dealers have the necessary information about tech­
nical requirements for installing or changing tires and rims.
Replacing tires and wheels
Tires should be replaced at least in pairs and not individually (for
example both front tires or both rear tires together) .
Be sure to read and heed the information to the tire pressure moni­
toring system* ~
page 312.
Always buy replacement radial tires that have the same specifications
as the tires approved for your vehicle by Audi. Replacement tires must
always have the same load rating specification as the original equip ­
ment or approved optional tires listed in the table~
page 297.
Audi-approved specification tires are specially matched to your
vehicle and its load limits, and can contribute to the important road- holding, driving characteristics, and safety of the vehicle
. The table
(~ page 297) lists specifications of the tires approved for the Audi
models covered by your Owner's Literature.
The tire pressure label located on driver's side B-pillar (~
page 297,
fig. 217) lists the specifications of the original equipment tires installed on your vehicle at the time it was manufactured.
Federal law requires tire manufacturers to place standardized infor­
mation on the sidewall of all tires~
page 305, fig. 220 . This infor­
mation identifies and describes the fundamental characteristics, the
quality grade of the tire and also provides a tire identification number
for safety standard certification and in case of a recall.
Tire specifications
Knowledge of tire specifications makes it easier to choose the correct
tires . Radial tires have the tire specifications marked on the sidewall,
for example:
P245 / 45 R 17 99 H XL
This contains the following information:
P Indicates the tire is for passenger cars (where applicable)
245 Nominal tire width in mm of the tire from sidewall edge to side-
wall edge. In general, the larger the number, the wider the tire
45 Height/width ratio in percent (aspect ratio)
R Tire construction : Radial
17 Rim diameter code (in inches)
99 Load rating code
H Speed rating letter code
XL (or "xl", "EXTRA LOAD", or "RF") indicates that the tire is a"Rein­
forced" or an "Extra Load" tire
M+S (or "M/S") Indicates that the tire has some mud and snow capa­
bility
The tires could also have the information of direction of rotation
~page 293.

Tires and wheels Ill
----------------
& WARNING (co ntinued )
• Snow chain s are available in different sizes. Always make sure
to follow the instructions provi ded by the snow chain manufac­
turer.
• Wh en driving with snow cha in s never drive fa ster than the
speed permitted for your specific snow chains .
• Always observe local regulations.
0 Note
• Remove snow chains before d riving on roads not cove red w it h
snow to avoid damaging t ires and wearing t he snow chains down
unnecessar ily.
• Snow chains, which come into direct contact wi th the wheel rim,
can scratch or damage it. The refore, make s ure that the snow chai ns
are sui tably covered. Chec k the pos it ion o f the snow cha ins afte r
driving a few yards and correct if necessary . Follow the instructions
from t he snow chain man ufacturer when doing so .
• If the Adaptive A ir Suspension* sho uld ma lfunct ion, do no t mount
or use snow cha ins because t he ve hicle will be ex tremely low . If you
do drive w ith snow chains o n while the veh icle is at t his level, the
snow c hains m ight severe ly damage the whee lhouse and other parts
o f the ve hicl e.
[I) Tips
W he re snow c ha ins a re mandato ry on certain ro ads, this no rm ally
also applies to ve hicles with A ll W hee l Dr ive. •
Safety first
Wheel bolts
Wheel bol ts mus t alwa ys be tigh tened to the co rrect
torque .
The design of wheel bolts is matched to the factory installed rims. If
differe nt rims a re fitte d, the correc t wheel bolt s wi th the r ig ht length
and co rrectly s haped bolt heads must be used. Th is ensures that
w heels are fitte d se cu rely and that the br ake system fun ctions
correctly .
In certain circumstances, yo u may not use wheel bolts from a
different veh icle -even if it is the same model~
page 346.
& WARNING
Improperly tightened or ma intained wheel bolts can become
loose causing los s of control, a collision and seriou s per sonal
injury .
• Always keep the wheel bolts and the thread s in the wheel hub s
clean so the wheel bolts can turn easily and be properly tightened .
• Never grease or oil the wheel bolts and the threads in the wheel
hubs. They can become loose while driving if greased or oiled , even
if tightened to the specified torque.
• Only use wheel bolts that belong to the rim being installed.
• Never use different wheels bolts on your vehicle .
• Always maintain the correct tightening torque for the wheel
bolts to reduce the risk of a wheel loss . If the tightening torque of
the wheel bolts is too low , they can loosen and come out when the
vehicle is moving . If the tightening torque i s too h igh, the wheel
bolts and threads can be damaged and the wheel can become
loose .
0 Note
The specified tor que fo r th e wheel bolt s i s 90 ft lb (120 Nm) wi th a
tolerance of ± 7,4 ft lb( ± 10 Nm). Torque wheel bo lts diagonally. .,_
Vehicle care Technical data