warning AUDI Q7 2012 Owner´s Manual

222 Intelligent technology
To ensure that the ASR works properly, all
four wheels must be fitted with identical
tires. Any differences in rolling rad ius of
the t ires can cause the system to reduce
engine power when this is not desired. See
also¢
page 285, 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 st ill
subject to wea r, depending la rgely on operat­
ing cond itions and dr iv ing habits
Q ,& . On ve­
hicles that are eithe r driven mostly in stop­
and -go city traffic or are driven hard, the
brake pads should be checked by your author­
ized Audi dealer more often than specified in
the
Warranty & Maintenance booklet . Failure
to have your brake pads inspected can result
in reduced brake performance .
On steep slopes, you shou ld use the braking
effect of the engine. This way, you prevent un­
necessary wear on the brake system. If you
must use your brakes, do not hold the brakes
down continuously . Pump the brakes at inter­
va ls.
Noises may occur when braking depending on
the speed, braking force and outside condi­
tions such as temperature and humidity.
Moisture or road salt
Under certain conditions, for examp le, 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 o r remove any ice coatings.
When you are driving at higher speeds with
the w indshield wipers on, the brake pads will
brief ly touch the brake discs in regular inter- vals so as
to improve reaction time when brak ­
ing on wet surfaces . You, the driver, will not
notice anything.
T he effect iveness 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 sa lt coating
from brake discs and pads w ith 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 driven regu larly or
only for short trips w ith litt le use of the
brakes.
If the brakes are not used frequently, or if cor­
rosion has formed on the discs, it is advisable
to clean off the pads and discs by braking
firmly a few times from a moderately high
speed
c> ,& .
Faults in the brake system
If you shou ld notice a sudden increase in
brake pedal trave l, then one of the two brake
c ir cuits may have fa iled
c> ,& .
Low brake fluid level
Malfunctions can occur in the brake system if
the brake fluid level is too low. The brake fluid
l evel is monitored electronically .
Brake lining wear status
Brake lining wear may be checked by visual in­
spect ion of the condition of the brake pads
through the openings in the wheel. If neces­
sary, the wheel may be removed for this in­
spect ion
c> page 298, Changing a wheel.
A WARNING
-- You shou ld perform braking maneuvers
for the purpose of cleaning the brake
system only if road conditions permit.
Other road users must not be put at risk -
you may cause an accident!

-Before descending a steep grade, reduce
speed and shift transmiss ion into a lower
gear or lower driving range. Do not ride
the brakes or hold the pedal down too
long or too often. This could cause the
brakes to get hot and dimin ish braking
efficiency.
- Do not "r ide the brakes" by resting your
foot on the pedal when you do not intend
to bra ke. Th is may cause the brakes to
overheat, prema ture wear and increased
stopping distance .
- Under certain climat ic and operating
condit ions such as passing through wa­
ter, driving in heavy rain or after washing
the vehicle, the effectiveness of the
brakes can be reduced . In winter, ice can
accumulate on the brake pads, linings,
discs and drums. Carefully apply brakes
for a test . Brakes will dry and ice coat­
ings will be cleaned off after a few care­
ful brake applications.
- Driv ing for an extended period of time on
salt-covered roads w ithout us ing your
brakes can also affect braking efficiency .
Clean off accumulated salt coating from
brake discs and pads w ith a few caref ul
brake applicat ions.
- If you damage the front spoiler, or if you
install a different spoiler, be sure the air
flow to the front brakes is not obstruct ­
ed. Otherwise the brake system co uld
overheat reducing the effectiveness of
the entire brake system.
- Failure of one brake circuit will impair
the braking capability resulting in an in­
creased stopp ing distance. Avoid driv ing
the vehicle and have it towed to the near­
est author ized Audi dealer or qualified
workshop .
Brake booster
The brake booster adds extra braking power.
The brake booster works with vacuum pres­
sure which is created only when the engine is
running¢ &,.
Int ellig ent technolog y 223
A WARNING
-Never let the veh icle roll to a stop with
the engine shut off .
- If the brake booster is not working, for
example when towing your vehicle, or because the brake booster has somehow
been damaged, the brake pedal must be
pressed considerably harder to make up
for the la ck of booster assistance .
Functioning of Anti-Lock Brake System
(ABS)
ABS prevents the wheels from locking up un­
der braking.
T he ABS contributes effect ively to vehicle con­
trol s ince it preve nts the whee ls from
locking
when the brakes are applied. This means that
the vehicle remains steerable and is less likely
to skid .
With ABS y ou do not nee d to pump the
bra ke. Just h old t he br ake ped al d own .
However, do not expect the ABS to shorten
braking distance under
all circumstances.
When dr iving on g ravel or on new ly fallen
snow o n top of icy s urfaces, braking dis tance
may be even longer, therefore, under these
circumstances, it is especia lly important that
you drive s low ly and wit h great care.
How the ABS s ystem works
An a utomat ic check is made when a speed of
about 12 mph (20 km/h) is reached . When
th is happens, a pumping noise can be heard.
If an ind iv idual whee l begi ns to rotate too
s low ly in relation to vehicle speed and tends
to lock, the ABS automatically reduces brake
pressure to prevent tha t whee l from locking .
T his automatic adjustment p rocess will cause
a
sli ght vibrati on of the brake pedal and some
no ises to a le rt you that ve hicle speed m ust be
adapted to existing road and traffic condi ­
tions. •
•

224 Intellig ent technol ogy
8_ WARNING
Although the ABS is very effective, always
remember that bra king capability is limit­
ed by t ire traction . Always adjust your dr iv­
ing spee d according to the road and t raffic
co nditions. Do no t let t he extra sa fety af­
forded by the ABS tempt you into ta king
extra risks. The ABS cannot overcome the
laws of physics.
@ Tips
- If ABS is not functioning prope rly, a
warning light will come on. See
¢page 18 .
-If a fault occurs in the ABS, the EDL is al­
so not functioning. This is indicated by
the ABS warning light .
Brake assistant
The brake assistant is designed to achieve the
optimum braking effect .
The brake assistant helps to increase the ef­
fective b rak ing power and thus to achieve a
shorter stopp ing distance. If the driver
presses the brake pedal very quickly, the brake
assistant automatica lly boosts the braking
force to the maximum level, up to the point where the anti-lock brake function (ABS) inter­
venes to stop the wheels from locking. You
should then keep the brake pedal pressed un­
til the veh icle has braked to the required
speed . The brake assistant sw itches itself off
as soo n as you re lease the brake pedal.
Automatic full braking a ssist
This funct ion allows full brak ing in spite of
h igh brake pedal forces (e .g . when the brakes
a re severely stressed because the vehicle is
fully loaded) . The driver notices th is function
throug h a reduction of pedal force and in­
creased pedal trave l. When the brake peda l is
r e leased, fu ll braking assis t switc hes off again
automatically.
I f the re is an ABS fa il ur e, the brake ass ista nt
and automatic full b rak ing ass ist are not avai l­
ab le . The brake assistant wi
ll not be operative if
there is a ma lfunction in the ABS .
8_ WARNING
-Please remember that the accident risk a l-
ways increases if you drive too fast, espe­
cially in corners or on a slippery road, or if
you follow the veh icle ahead of you too
closely. Increased r isk of an accident can­
not be compensated for even by the brake
assistant, so always maintain a safe speed.
Servotronic ® -
advanced power
steering system
The power steering systems uses the power of
the running engine to allow precise steering
with little effort.
The advanced Servotronic ® power steering
system senses the road speed and electron i­
cally adjusts power assistance to provide com­
fortab le and safe steering response exact ly
matched to the vehicle speed .
Power steer ing will not work if the engine is
off . As a result, the steering wheel will be hard
to turn .
The power steering fluid level is checked dur­
ing the scheduled maintenance services .
d) Note
If there is an electronic malfunction, ser­
votronic
will still function like a conven­
tiona l powe r steering system, providing a
constant steering support force that is no
l onger proportionate to the vehicle speed .
This is most not iceable when turning the
stee ring wheel at low speeds (fo r example
when pa rking), - more effort w ill be re­
q uired than us ua l.
- Be aware o f the different than usual
steering response and adjust your steer ­
ing force accordingly.
- Have the problem checked and set r ight
by an Audi dealer as soon as possible .

@ Tips
- When the engine is running, never hold
the steer ing whee l turned a ll the way to
the right or t o the left f or longer than 15
seconds . The power steering pump w ill
overheat the hydraulic f lu id if you keep
hol ding the steer ing wheel turned all the
way . This is likely to damage the power
steering system .
- If the power steer ing system should fail
ent irely, or if the engine is not running
(fo r example , while being towed), you
will still be able to steer the vehicle .
However ,
considerably more effort will
be required to do so.
- If the power s teer ing system should
have a leak, or is not f unct ioning proper ­
l y, contact yo ur authorized Audi deale r
immediately.
- The power stee ring system requires a
spec ially formulated hydraulic fl uid. The
power steer ing reservo ir is the one locat­
ed farthest to the rear on the left side of
the engine compartment
c> page 260.
The co rrect flu id leve l in the reservoi r is
i mportant for p roper functioning of the
power steer ing .
Driving with your
quattro ®
With all-whe el drive , oil four whe els ore driv ­
en.
General information
W ith all -whee l dr ive , power is dis tr ibuted to
a ll fo ur wheels. This happens automatica lly
dep ending on yo ur driving sty le and the road
conditions at th e time . See a lso
¢ pag e 221,
Electronic differential lock ( EDL) .
Winter tires
When driv ing in the w inter , your ve hicl e w it h
all -wheel drive has an advan tage, even with
regu lar tir es. In wint er road conditions it may
be adv isable to mount wint er tires (o r all -sea­
son t ires) for improved driveability and b rak-
Int ellig ent technolog y 225
ing: t h ese tires must be mounted on all four
wheels. See also ¢
page 289, Winter tires .
Tire chains
Where tire chains a re ma ndatory o n cer tain
roads, this no rma lly also app lies to veh icles
with all-wheel drive¢
page 290, Snow
chains.
Replacing wheels/tires
Vehicles with all-wheel drive must always have ti res of t he same s ize. A lso avo id tires
with different t read dep ths. For det ails see
page
c!;> pag e 285, New tir es and replacing
tires and wheels .
_& WARNING
A lways adj ust yo ur driv ing to road and traf­
f ic conditions. Do not let the extra safety
afforded by all-wheel drive tempt you into
taking extra risks .
-Altho ugh the all-wheel drive is very ef ­
fective, always remember that braking
capacity is lim ited by tire traction. You
should therefore not drive at excessive
speeds on icy or slippe ry road surfaces .
- On wet road surfaces, be careful not to drive too fast because the front wheels
could begin to slide o n top of the water
(aquaplaning). If th is should occur, yo u
will have no w arning from a s udden in­
cre ase in engine speed as w ith a front ­
wheel drive veh icle. Always drive at
speeds which are su ited to the road con­
ditions -risk of crash.
Energy management
Starting ability is optimized
E nergy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting the engine.
If a vehicle with a conventiona l energy system
is not drive n for a long per iod of t im e, the bat­
te ry is discharged by idling cur rent consume rs
(e .g. immobi liz e r) . In cert ain circum stan ces it ..,_
•
•

226 Intelligent technology
can result in there being insufficient energy
avai lab le to start the engine .
I ntell igent energy management in your vehi­
cle handles the distribution of electrical ener­
gy . Starting abi lity is markedly improved and
the life of the battery is extended .
Basically , energy management consists of
battery diagnosis , idling current manage­
ment
and dynamic energy management.
Battery diagnosis
Battery diagnosis continuously determines
the state of the battery. Sensors determine
battery volta ge, battery current and battery
temperature. This determines the current
state of charge and the power of the battery.
Idling current management
Idling current management reduces energy
consumption while the vehicle is stand ing.
With the ignition switched off, it contro ls the
energy supply to the various e lectrica l compo­
nents. Data from battery diagnosis is consid­
ered.
Depending on the battery's state of charge,
individua l consumers are gradually turned off
to prevent excessive discharge of the battery
and thus maintain starting capability.
Dynamic energy management
While the vehicle is being dr iven , dynamic en­
e rg y management distributes the energy gen­
erated according to the needs of the individu­
a l components. It regulates consumption, so
that more ele ctrical energy is not being used
than is being generated and ensures an opti­ mal state of cha rge for the battery.
{D) Tips
- But even energy management cannot
negate the limits of physics. Consider
that the power and life of a battery are
limited .
- If starting ab ility is threatened, you are
i nformed by a warn ing
c> page 22 7,
Driver notification in the instrument
cluster display .
What you should know
The highest priority is given to maintaining
starting capability .
The battery is seve rely taxed in shor t-distance
driving, in city tra ffic and dur ing the cold time
of year . Abundant electrical energy is re ­
quired, but only a little is generated . It is also
critical if the engine is not running and e lectri­
ca l components are turned on . In this in­
stance energy is being consumed but none is
being generated.
It i s in precisely these situations that you will
notice energy management actively regulat­
ing the distribution of energy.
Vehicle stands for an extended period
If you do not drive your vehicle over a period
of several days or weeks , e lectr ica l compo­
nents are gradually cut back or sw itched off.
T his reduces energy consumption and main­
ta ins start ing capability over a longer period .
Take into consideration that when you unlock
your vehicle , some conven ience functions ,
s uc h as the inte rior lights or the power seat
adjustment, may not be available. The con­
venience functions will be available again
when you turn on the ignition and start the e ngine .
With the engine turned off
If you listen to the radio, for example, w ith
the engine turned off or use other MMI func ­
tions, the battery is being discharged .
If starting capability is jeopardized due to en­
ergy consumption , the following warning ap­
pears in the MMI display:
Please start engine, otherwise system will
switch off in 3 minutes .
The warning indicates that the system will be
turned off automatically after 3 minutes . If
you w ish to continue using the funct ions, you
have to sta rt the eng ine.
1111>

228 Driving and environment
Driving and
environment
The first 1,000 miles
(1,500 km) and
afterwards
New engine
The engine needs to be run-in during the first
1,000 miles (1,500 km).
For the fir st 600 miles (1,000
kilometers):
.,. Do not use full throttle.
... Do not drive at engine speeds that are more
than 2/3 of the maximum permitted RPM.
From 600 to 1,000 miles (1,000 to
1,500 kilometers):
.,. Speeds can gradually be increased to the
maximum perm iss ible road or engine speed .
During and after break-in period
... Do not rev the engine up to high speeds
when it is cold. This applies whether the
t ransmission is in N (Neutral) or in gear.
After the break-in period
... Do not exceed maximum engine speed un­
der any circumstances.
... Upshift into the next higher gear
before
reaching the red area at the end of the tach­
ometer scale¢
page 10.
During the first few hours of driving, the en­
gine's internal friction is higher than later
when alt the moving parts have been broken
in. How welt this break-in process is done de­
pends to a considerable extent on the way the
vehicle is driven during the first 1,000 miles
(1,500 kilometers).
(D Note
Extremely high engine speeds are auto­
mat ica lly reduced . However, these rpm
lim its are programmed for an engine welt
run- in, not a new engine.
{® For the sake of the environment
Do not drive with unnecessarily high en­
gine speeds - upshifting ear ly saves fuel,
reduces noise and protects the environ­
ment.
, New tires
If your vehicle is running on new tires, drive
part icularly careful for the first 350 miles
(500 kilometers) after fitting.
A WARNING
New tires tend to be slippery and must al­
so be "broken -in". Be sure to remember
this during the first 350 miles (500 kilo­
meters). Brake gently. Avoid following
closely behind other vehicles or other sit­
uations that might require sudden, hard
braking.
New brake pads
Remember that new brake pads do not have a
full brak ing effect dur ing the first 250 m iles
(400 kilometers) after they are insta lled.
New brake pads have to be "burnished in" be­
fore they have optimal grab¢
A.
During the break- in period, you should avoid
putting severe loads on the brakes. Severe
loads include, for example, sudden hard brak­
i ng, in particular at very high speeds or, for
example, on mountain passes .
A WARNING
New brake pads don't have the best stop­
ping power and must be "broken-in" dur­
i ng the initia l 100 to 150 miles (150 to
200 kilometers) of normal city driving. You
can compensate for this by pressing the
brake pedal more firm ly. This also applies
later when new pads are installed.

Catalytic converter
Applies to vehicles: with gasoline engine
It is very important that your emission con­trol system (catalytic converter) is function­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner .
... Always use lead-free gasoline¢ page 250,
Gasoline .
... Never run the tank down all the way to
empty .
... Never put too much motor oil in your en-
gine ¢
page 264, Adding engine oil~-
.,. Never try to push- or tow-start your veh icle.
The catalytic converter is an eff icient "clean­
up" device built into the exhaust system of
the vehicle. The catalytic converter burns
many of the poll utants in the exhaust gas be ­
fore they are released into the atmosphe re.
The exclusive use of unleaded fuel is cr it ically
i mportant for the life of the cata lytic convert­
e r and proper fu nctioning of the engine.
A WARNING ,~
- Do not park or operate the veh icle in
areas where the hot exhaust system may
come in contact with dry grass, brush,
fuel spill or other material which can
cause a fire.
- Do not apply additional undercoating or
rustproofing on or near the exhaust
man ifold, exhaust p ipes, catalytic con­
verter or heat shie lds . During driving, the
substance used for undercoating could
overheat and cause a fire.
{[) Note
-Be aware that just one tank fi lling with
le aded fuel will already seriously de­
grade the performance of the catalytic
conve rter .
- Do not exceed the correct engine oil level
¢ page 264.
-Do not drive until the fuel tank becomes
completely empty. The eng ine could mis­
fire . U nburned fuel could a lso get into
Dri vin g and en vironm ent 229
the exhaust system and this cou ld cause
the catalytic converter to overheat .
- Do not turn off the igni tion while the ve ­
hicle is moving.
- Do not con tinue to ope rate your veh icle
unde r these conditions, as othe rwise fuel
can reach the catalytic converter. This
co uld result in overheating o f the con­
verter, requir ing its replacement.
- To assure efficient operation of the Emis ­
sion Control System:
- H ave your vehicle maintained prope rly
and in accordance w ith the se rv ice rec­
ommendat ions in you r Warranty &
M ain tenance boo klet.
- L ack of prope r maintenance as we ll as
improper use of the vehi cle w il l impair
the function of the em ission contro l
system and could lead to damage .
@ For the sake of the environment
Even when the Emiss io n Control System is
operat ing properly, the exha ust gas can
have a sul fur -li ke exhaust gas smell under
some operating states . This depends on
the sulfur content of the fuel being used .
Using a different brand of fue l may help,
or f illing the tank with lead-free super
grade gasoline .
Diesel particulate filter
Applies to vehicles : with diese l eng ine
The diesel part ic u late filter filters nearly all of
the soot particles out of the exhaust . The fil­
ter cleans itself automat ica lly under normal
driv ing cond itions . If the filter ca nnot clean it­
self (for example, because you a re o nly dr iving
short distances), the fi lter becomes clogged
with soot and the. symbo l for the diesel
particu late filter ill uminates ¢
page 3 7.
A WARNING
- Do not park your vehicle over flammable
materia ls such as grass or leaves because
the high temperature of the diesel par-
ticulate fi lter could start a fire. ..,. •
•

It takes a long time for the engine to warm up
fu lly when it is running at idle. However , wear
and nox ious em issions are especially high
when the engine is warming up. So you should drive away as soon as you start the engine and
avoid running at high rpms while the engine is
still warming up .
(D Note
Do not leave engine idling unattended af­
ter starting . If warning lights should come
on to indicate improper operation, they
wou ld go unheeded. Extended idling also
p roduces heat, which cou ld resu lt i n over­
heating or other damage to the vehicle or
other property.
Regular maintenance
A badly tuned engine unnecessarily wastes a lot of fuel.
"' Have your vehicle serv iced at regular inter-
vals.
By having your vehicle regularly serviced by an
author ized Audi dealer helps to ensure that it
r uns p roper ly and economically. The condition
of your vehicle not only affects its safety and
ab ility to hold its value, it also affects
fuel
c on sumpt ion .
Ch eck your oil each tim e yo u fill your tank .
The amount of oil used is related to engine
load and speed .
It is normal for the oil consumption of a new
engine to reach its lowest v alue after a certain
mileage has been dr iven .
You must drive your vehicle about 3,000 miles (S,000 ki lometers) before you can properly
assess o il consumption .
This a lso applies to fuel consumption and en­
gin e output.
0 Note
- Have yo ur vehicle maintained properly
and in accordance wit h the service rec­
ommendations in your War ranty
& Main-
Dri vin g and en vironm ent 231
tenance book let. Lack of proper mainte­
nance as well as improper use of the ve ­
hicle will impair the function of the
em ission contro l system and could lead
to damage.
- Do not alter or remove any component of the Emission Control System unless ap­proved by the manufacturer.
- Do not alter or remove any device, such as heat shie lds, switches, ign ition w ires,
valves, which are designed to protect
your vehicle's Emission Control System and other important vehicle compo­
nents.
Fewer short trips
Fuel consumption will always be relatively
high on short trips .
"' Try to avoid driv ing short distances w ith a
cold engine .
The eng ine and cataly tic converter have to
reach their opt imal
op erat ing temperature t o
reduce fuel consumpt ion and nox ious em is­
s ions effect ively .
Just after starting, a co ld eng ine in a mid-s iz e
car only achieves a fuel economy of 6-8 miles
per gallon (30 -40 l/l00km). After about a
half a mile , fuel economy cl imbs to 12 mpg
(20 l/100 km) . After about
2.5 miles (4 km),
the engine is at i ts p rope r opera ting tempe ra­
tu re and f uel economy has reached a normal
l evel. So you can see that yo u should avo id
short trips whenever possible.
T he
out sid e t emperat ure is also cr itica l in th is
regard. Your car consumes more fue l in the
winter than in the summer.
•
•

232 Driving o ff road
Driving off road
Driving in difficult road
conditions and offroad
General information
The operation of the E lectronic Stability Con­
trol (ESC) is expanded for operation away
from paved roads. In situations where slip or a
d ifferential locking function is required, the
ESC offroad mode can be act ivated
c::;, page 219 . Hill descent control is also availa­
ble in the ESC offroad mode, which automati­
cally b rakes the vehicle and thereby keeps
speed constant when diffe rent wheel speeds
a re detected when descending a hill
c::;, page 220. Your Audi also has permanent
a ll-whee l drive in addition.
H oweve r, your Aud i is not a pure off road vehi­
cle .
It was no t built for d riving unde r extreme
conditions, e .g. fo r trips that are in the natu re
of an expedit ion .
Dri ve only on road s and offroad section s
which match the de sign of y our vehicl e and
y ou r abilitie s as a dri ver. Never take risks!
Before driving offroad
- Check the eng ine oil level, ti re p ressu re ,
coolant level , and the fluid level in the w ind­
shield washe r reservo ir.
- Stow luggage items and o ther objects in the
luggage compartment, and secure t hem
against s liding aro und .
After driving offroad
- After trips offroad, remove any twigs and
othe r foreign objects from the grill, the un­
derbody and the wheels. Pay spec ia l atten­
t ion to fo re ign objects (stones) which have
be come lodged in the tire tread.
- Clean t he body a nd the veh icle unders ide,
and in spec t the veh icle for poss ible damage.
- Clean dirty w indows , headlamp lenses , rear
l ights, and li cense plates .
- Perfo rm a brake check (part icularly after
t ravel ling th rough water) .
A WARNING
-Drive especially attentively and plan
a head in d iff icu lt road conditions and
when off road. Excessive speed o r inco r­
rect maneuvers can cause injuries and
damage to the vehicle.
-
- Always adapt your speed and driving
style to road, offroad, t raff ic, and weat h­
er cond itions. Drive e specially slowly off­
ro ad when you r view is res tricted.
- Please be awa re that in ESC off road
mo de, particularly on a smoo th and s lip­
pe ry road, the wheels may have an in­
crease d tendency to sp in and the vehicle
may b reak away - danger of skidding!
- Stabili ty is limited in the ESC off roa d
mode .
@) For the sake of the environment
Avoid damage to t he environmen t an d re­
s pect na tu re .
(D Tips
Only d rive w here it is permitte d and stay
on marked road s and pat hs.
Explanation of some technical terms
The following data refe r to ideal cond itions.
Depend ing on veh icle load and gro und condi ­
tions and the environment, the numbers may
vary. It is the driver's responsibility to decide
whether a vehicle can overcome a specific s it­
uat io n
c::;, ,&. .
Gradient angle
The number of meters in alt itude ga ined over
a distance of 109.4 yards or 100 meters
(grade) are given as a percentage or degrees.
Information about the gradient the vehicle
can climb under its own power (depends in
part on the road surface and engine power) .
Max imum pe rm itt ed grade : 3 1
°
Later al angle (slope of vehicle )
Indicates the angle up to which the vehicle
can be driven diagonally or across the fall line ..,.

on a slope w ithout the veh icle tipping over
sideways (depends on center of gravity). Maxi­ m um permitted latera l ang le: 35°
Breakover angle
I ndicates the angle up to whi ch the veh icle
can drive ove r a ramp at low speed w it h out
the unde rside of the vehicle hitting the edge
of the ramp.
- Vehicl es with out air spring s: maximum
breakover ang le: 21, 1 °
- Vehicles with adaptive air su spen sion* :
maximum b reakove r angle: 23.8° (at h igh
l evel 2)
Approach /d eparture angle
Transition from the horizontal p lane to a gra­
d ient or from a grade bac k to level ground . In ­
d ic a tes the angle up to which the vehicle can
drive onto or off a slope at low speed wi thout
striking the bumper or the underbody.
- Vehicl es without air spring s: maximum ap­
proach/depart ure angle: 21.0° (front),
23.4 ° (rear)
- Vehicl es with adaptiv e air su sp ension* :
maximum approach/departu re angle at high
l evel 2 : (front) 23,5°, (rear) 25 .4°
Ground clearance
The distance between the road surface and
the lowest po int of the ve hicle underbody .
-Vehicles w ithout air spring s: ground clear­
ance: 8 .1 in (204.8 mm)
- Vehicles w ith adapti ve air suspension *:
maximum ground clearance: 9 .4 i n
(239 .8 mm) at high level 2
A WARNING
Exceeding the stated maximum figures
can result in severe injuries or ve hicle dam­
age.
- All the information was gathered on lev­
el, firm and non-slippery road surfaces,
and unde r dry wea ther conditions.
- Ideal conditions do not p revail offroad.
Never utilize the maximum read ings to
Driving off road 233
their f ullest, always leave a safety re­
serve.
Driving tips
On poor road and offroad, there is always on ­
ly one motto: Plan ahead and drive slowly!
Please obse rve the fo ll ow ing when d riving
away from paved roads :
.,. Drive on ly on roads and offroad sections
which ma tch the design of yo ur vehicle and
your abilities as a driver. Never take r is ks!
.,. Drive slow ly and plan ahead!
.,. Take into consideration the
ground clear­
an ce
of your vehicle .
.,. Act ivate the
ESC off road mode q page 219
as needed.
.,. Use the
hill descent control q page 220
when dr iv ing down steep sections on h ills .
Unpa ved ro ads and offroad
Drive slowly on unfamiliar roads and unknown
offroad section s, and look out for unexpected
obstacles (e .g. po tholes, rocks, tree s tumps,
etc .) .
To prevent the vehicle from bottoming and
avo id damage to the underbody, you should
drive straight across severe bumps in the
ground with only one side of the veh icle so
that only two of your whee ls cross the bumps .
Drive b risk ly through sandy or marshy offroad
sec tions and do not stop, i f at all possible .
Driving throu gh wate r
Note the following to avoid vehicle damage
when d riving through water, for examp le on
flooded roads:
- The wa ter must not be any higher than the
bottom of the vehicle body .
- Do not dr ive faste r tha n walk ing speed .
Driving on a slope
If you ever find yourself not able to climb a
s lope, do not try to turn around , drive back
down in
r e ver se . Otherwise, you run the r isk
of tipp ing ove r. ..,.
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