brakes AUDI ALLROAD 2000 User Guide

VE
HICL E OPERA TION-----------------------
'4 WARN ING continued
• Before descending a steep
grade, reduce speed and shift
transmission into a lower gear or
lower driving position. Do not ride
the brakes or hold the pedal down
too long or too often. This could
cause the brakes to get hot and di­
minish braking efficiency.
• If you damage the front spoiler,
or if you install a different spoiler,
be sure the air flow to the front
brakes is not obstructed. Other­
wise the brake system could over­
heat reducing the effective ness of
the entire brake system.
• Failure of one brake circuit will
impair the braking capability re­
sulting in an increased stopping
distance.
Avoid driving the vehicle and have
it towed to the nearest Audi Dealer
or qualified workshop.
204 Electronic differential lock
(EDL)
The EDL operates in conjunction with the
ABS. The EDL acts automatically, i.e. with­
out the driver's intervention.
With the aid of the ABS sensors, this sy­
stem monitors the speed of the driven
wheels up to about 50 mph, 80 km/h .
Within the speed range at which this sy­
stem operates, if the wheels spin (e.g. on
slippery surfaces) they are braked in a con­
trolled manner , and more of the engine's
power is directed to whiche ver wheels
achieve greater traction.
Please note:
• When driving off, always be sure to keep
road conditions in mind as you accelerate.
If a drive wheel spins because it's on a slip­
perier surface, gradually increase the pres­
sure on the accelerator pedal until the car
starts to move. •
When accelerating on slippery surfaces,
such as on ice or snow, always be careful
when depressing the accelerator pedal.
Even with the EDL working, the drive
wheels can spin and reduce your ability to
control your car.
• To prevent the disc brake of the braked
wheel from overheating, if subjected to ex­
cessive loads the EDL cuts out temporarily.
The vehicle remains operational and be­
haves in the same way as a vehicle without
EDL
If a fault occurs in the ABS the EDL is also
not functioning. This is ind icated by the ABS
warning light-see page 125.
ftl WARNING
The increased safety afforded by
EDL does not mean that you can
take safety risks. Always adapt
your driving style to the road con­
ditions and traffic situation.

VEHICLE
OPER ATION----------------------
Operation
The Anti-Lock Brake System (ABS) and the
Electronic Differential Lock (EDU are inte­
grat _ed in the Electronic Stability Progr am. In
a _ddrtron to the data provided by these func­
tions, the ESP control unit requires addition­
al measurement data provided by hig h-per­
forman ?e sensors. The rotat ional speed of
the veh1cle about its vertical axis, vehicle lat­
eral acceleration, brake pressure and the
steering angle are measured.
The direction in which the driverwishes to
travel is determined with the aid of the
stee �ing angle and the vehicle speed and is
contmually compared with the actual be­
havior of the vehicle.
If the data do not match - for example when
a vehrcle is beginning to spin out of control
- the ESP applies the brakes to the appropri­
ate wheels for the given situation and, if
necessar y, changes the vehicle traction
forces so as to reduce the slipping of individ­
ual wheels (ASR anti-slip regulation).
206 The
vehicle is then stabilized by the forces
a ?tin � on the wheel during braking. If the ve­
hicle IS overstee ring (rear tends to skid out
of the turn), the brakes are mainly applied on
the wheel that is on the outside ofthe curve.
In the case of a vehicle that is und ersteering
(tendency to slide out of the curve). the
brakes are applied at the rear wheel that is
on the inside of the curve. An audible signal
�rll accompany the brake application func­
tion.
All �SP senso rs a�e monitored continuously
wh1le the vehicle IS being driven. However,
when the vehicle is driven at low speed on
ex tremely rugged terrain, it is not always
possrble to monrtor the ESP sensors contin­
uously. Thus, in rare and exceptional cases
the ESP itself can deactivate (ESP and ABS
ind icator lights will be lit continuously).
In this case. the ride level adjustment sys­
tem lowers the vehicle to the normal level
If this happens, you may need to select th�
ride level again (see page 153).
Operation of the ESP and ABS is restored
whenever you restart the engine. m
WAR NING
! he Electronic Stability Program
•• nevertheless subject to the laws
of physics. It is particularly impor­
tant 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 in­
creased safety provided by the
Electro nic Stability Program sys­
tem to lull you into accepting addi­
tional safety risks.

Tr
ailer brakes
If your trailer is equipped with a bra king sys­
tem, check to be sure that it conforms to all
regulations.
The trailer brake system must not be direct­
ly connected to the vehicle' s brake system.
Safety chains
Always use safety chains between your ve­
hicle and trailer.
Tr ailer lights
Tra iler lights must meet all regulations. Do
not connect the trailer light system directly
to the light system of your vehicle. Be sure
to check with your Audi Dealer for correct
wiring, switches and relays. Mirrors
If you are unable to see the traffic behind
you using the regular outside mirrors, then
you must install extended mirrors. It's im­
porta nt that you always have clear vision to
the rear.
Operating instructions
Maximum trailer weight
A trailer for your vehicle is limi ted to a typical
class 1 or class 2 trailer.
Never allow a passenger to ride in a
trailer.
�W ARNING
Anyone not properly restrained in
a moving vehicle is at much great­
er risk in an accident.
Never let anyone ride without the
restra ints provided by Audi. VEHICL
E OPER ATION
Lights
The headlight settings should be checked
with the trailer attached before driving off.
Adjust as necessary so that you can see the
road ahead but not blind on-coming traffic.
Check proper working of vehicle and trailer
lights.
Safety chains
Be sure trailer safety chains are properly
conn ected from the trailer to the hitch on
the vehicle. Leave enough slack in the
chains to permit turning corners. When you
install safety chains, make sure they will not
drag on the road when you are driving.
The chains should cross under the trailer
tongue to prevent it from dropping in case
of separation from the hitch.
209

VEHICLE OPER
ATION-----------------------
Driving Instructions
To obtain the best possible handling of ve­
hicle and trailer , please note the following:
• A "balanced" rig is easier to operate and
control. This means that the tow vehicle
should be loaded to the extent possible and
permissible while keeping the trailer as light
as possible under the circumstances.
Whenever possible, transfer some cargo to
the luggage compartment of the tow ve­
hicle while observing tongue load require­
ments and vehicle loading considerations.
• The higher the speed, the more difficult
it becomes for the driver to control the rig.
Do not drive at the maximum per­
missible speed. Reduce your speed even
more under unfavorable load, weather or
wind conditions - particularly when going
dow nhill.
210 Be
especially careful when passing other
vehicles.
Reduce vehicle speed immediately if the
trailer shows the slightest sign of swaying.
Do not try to stop the sway ing by accel erat­
ing.
Observe speed limits. In some areas
speeds for vehicles towing trailers are low­
er than for regular vehicles.
• Always apply brakes early.
When driving downhill, shift into lower gear
to use the engine braking effect to slow
down the vehicle. Use of the brakes alone
can cause them to overheat and fail. •
The coolant temperatura gauge
must be observed carefully. H the
needle nears the upper end of the
scale, reduce speed immediately
and/or switch off the air condi­
tioner.
If the coolant temperature warning
light in the instrument cluster starts
flashing in red, pull off the road,
stop and let the engine idle for about
2 minutes to prevent a heat build-up.

-----------------------VEHICL E OPER ATION
Tr ailer towing tips
Yo ur vehicle handles differently when tow­
ing a trailer because of the additional weight
and weight distribution. Safety, perfor­
mance and economy will greatly depend on
how carefully you load your trailer and oper­
ate your rig.
Before you actually tow your trailer, practice
turning, stopping and backing up in an area
away from traffic until you learn the feel of
your vehicle and trailer unit.
Backing up is difficult and requir es practice.
Steering while backing up is generally oppo­
site of that when backing your vehicle with­
out a trailer.
Maintain a greater distance between your
vehicle and the one in front of you. You will
need more room to stop.
To compensate for the trailer, you will need
a larger than normal turning radius. When
passing, remember that you cannot
accelerate as fast as you normally would be­
cause of the added load. Make sure you
have enough room to pass. After passing,
allow plenty of room for your trailer before
changing lanes again.
Avoid jerky starts, sharp turns or rapid lane
changes.
After parking, always block the wheels of
both vehicle and trailer. Do not park with a
trailer on a slope. If it cannot be avoided, do
so only after doing the following:
• Apply foot brake.
• Have someone place chocks under both
vehicle and trailer wheels.
• With chocks in place, slowly release
brakes until wheel blocks absorb the load.
• Turn wheels to curb.
o Apply parking brake.
• Place automatic transmission in "P". If
you move the selector lever of the auto­
matic transmission to "P" before applying
the parking brake and before blocking the
wheels, you may require more force later to
move the lever out of the "P" position.
When restarting after parking on a slope, re­
verse the procedure:
• Start the engine.
• Shift transmission into gear.
o Release the parking brake and slowly
move away from the wheel blocks.
• Stop and have someone retrieve the
wheel blocks.
Notes
• Do not tow a trailer during the
break-in period of your vehicle.
• If you tow a trailer, your Audi may require
more frequent maintenance due to the ex­
tra load -see also page 228.
211

VEHICL E CA
RE----------------------------------------------------
Notes
• Do not wash the vehicle in direct sun­
light.
• If the vehicle is rinsed with a hose, do not
direct the water into the lock cylinders -
otherwise they may freeze up in the winter.
�W ARNING
• Do not wash, wax or dry the ve­
hicle with the engine running.
• Do not clean the underside of
chassis, fenders, wheel covers,
etc. without protecting your
hands and arms. You may cut your­
self on sharp-edged metal parts.
• Moisture and ice on brakes may
affect braking efficiency. Test the
brakes carefully after each vehicle
wash.
214 Washing
your vehicle with a power
washer
If you use a power washer, please note the
following:
• Always follow the operating instructions
for the power washer -especially for pres­
sure and spraying distance.
• Make sure that the jet on the spray hose
produces a "fan shape" spray. Do not use
a jet which sprays the water out in a direct
stream or one that has a rota ting jet.
• Water temperature should not exceed
140 °F (60 °C).
�W ARNING
Never wash tires with a jet that
sprays the water out in a direct
stream. This could invisibly dam­
age and weaken the tires, even if
they are sprayed from a relatively
long distance for a vary short
amount of time. Damaged and
weakened tires can fail and cause
accidents and personal injury. Headli
ghts
Do not clean your headlights with a dry
towel or sponge. They must be cleaned
with a moistened towel.
Never use a sponge designed for removing
dried-on insects, a kitchen scrubber or any
other similar product since the lens surface
can be damaged by scrat ching and scour­
ing.
When using high-pressure washing equip­
ment or steam-cl eaning units, never spray
the vehicle with the nozzle close the vehicle
surface and never aim the spray at the same
point for a relatively long period of time.
Polishing Please refer to the imp ortant information on
page 212.
Polish your vehicle only if the paint has lost
its shine and the gloss cannot be brought
back with wax. If the polish used doesn't
contain preservative compounds, the paint
must be waxed afterwards.
Do not treat matte- pain�ed and plas­
tic parts with polish or wax.

VEHICL E
CA RE-------------------------
Weatherstrips
Keep silicone sprays off the wind­
shield to avoid wiper smear in rain.
To seal properly, weatherstrips around
hood, rear lid, doors, etc., must be pliable.
Spray with silicone or coat with talcum pow­
der or glycerine to reta in flexibility of the
rubber and to protect against freezing in the
w1nter.
Dull finishes and plastics
Plas .tic pa �s. such as light bulb lenses, dec­
orative stnpes, panels, bumpers, etc., will
come clean with regular washing. Should
additional cleaning or spot remova l be nec­
essar y, use a soft brush or cloth soaked with
a mild detergent solution. Then rinse thor­
oughly and imme diately with clear water.
Do not use anyth ing which could
mar the plastic or dull finished sur­
faces, such as wax, polish, abrasive
detergents or chemical cleaning sol­
vents.
216 Bright
metal trim
Bright or black anodized metal trim will
come clean with regular washing. Remove
spots or dirt from chrome and stainless
steel with a chrome cleaner. Apply a
chrome polish for continued luster and
protec tion.
Steel wheels
Always include the hub caps and wheel
rims when washing your vehicle to remove
road dirt, salt sprays and brake dust. If nec­
essary, use a commercial wheel cleaner to
remove accumulated brake dust. Paint
scratches should be touched up as soon as
possible to prevent corrosion.
Light alloy wheels
To preserve the decorative appearance of
the light alloy wheels, some special care is
necessary. In addition to road dirt and salt
sprays, brake dust is also corrosive. If left on
too long, brake dust can cause pitting. Wash
the wheels with a sponge or hose brush ev­
ery other week. Road salt
should be removed weekly with
an acid free cleaning solution. Every three
months (after regular cleaning) coat the
wheels with petroleum jelly or car wax. Rub
it in firmly with a soft cloth. Never use abra­
sive or metal polishing cleaning agents.
� WARNING
Moisture, ice, and road salt on
brakes may affect braking effi­
ciency. Test the brakes carefully
after each washing. Always heed
WA RNING on page 203.

-------------------------VEHICLE CA
RE
Engine compartment
�W ARNING
• Before working in the engine
compartment. be sure to read the
information on page 232.
I) Before reaching into the front
plenum panel. always re!"ove the
ignition key. Otherw1se. the
windshield wiper system could
unin tentionally be switched on.
possibly causing personal injury
from the moving wiper linkage.
• Do not wash. wax or dry the en�
gine with the engine ru!'l'! ing. Mov­
ing or hot parts could 1n1ure you. ,Al
WARNING continued
e Do not clean the underside of
the chassis, fenders. wheel cov­
ers. or other hard to reach parts
without protecting your hands and
arms. You may cut yourself on
sharp-edged metal parts.
• Moisture and ice on brakes may
affect braking efficiency. Test the
brakes carefully after each vehicle
wash.
The engine compartment and transmission
have been corrosion protected at the facto­
ry.
Remove leaves from the plenum panel in
front of the windshield under the engine
hood. This prevents the water drain holes
from becoming blocked, and it prevents de­
bris from entering the vehicle interior
throug h the heating and ventilation ducts. Good
anti-corrosion treatment is very im­
porta nt, particularly in the winter. If the ve­
hicle is frequently driven on salted roads,
the entire engine compartment and plenum
panel should be thor oughly cleaned at the
end of winter and retreated to prevent salt
damage. At the same time, the underside of
the vehicle should be washed as well.
�W ARNING
Never touch the radiator fan. The
auxiliary electric fan can switch on
suddenly and injure you-
Always switch off the ignition be­
fore cleaning the engine _
219

-------------------------VEHICLE
CARE
Te mperature
The temperature grades are A (the highest),
8, and C, repres enting the tire's resistance to
the generation of heat and its ability to dissi­
pate heat when tested under contro lled con­
ditions on a specified indoor laboratory test
wheel. Sustained high temJ)erature can
cause the material of the tire to degenerate
and reduce tire life, and excessive tempera­
ture can lead to sudden tire failure. The
grade C corres ponds to a level of perfor­
mance which all passenger car tires must
meet under the Federal Motor Vehicle Safety
Sta ndard No. 1 09. Grades Band A represent
higher levels of performance on the laborato­
ry test wheel than the minimum required by
law.
�W ARNIN G
The temperature grade for this tire
is est ablished for a tire that is
properly inflated and not over­
loaded. Excessive speed, under­
inflation, or excessive loading, ei­
ther separately or in combination,
can causa heat buildup and pos­
sible tire failure. Wheel
replacement
If you wish to equip your vehicle with tires
or wheels other than those installed at the
factory, please note the following:
• For technical reasons it is not al­
ways possible to use wheels from
other vehicles -under certain condi­
tions not even wheels from the same
vehicle model.
• Wheel rims and wheel bolts are
matched to fit your Audi. When
installing different wheels (for ax­
ample, wheels with winter tires), the
correct wheel bolts with the proper
length and conical shape of the bolt
head must be used. The secure fit of
the wheels and the proper function­
ing of the brake system and safety
are dependent upon this.
• Wheel rims and wheal bolts are
matched to fit your Audi. •
Before you plan on exchanging
steel wheels, light alloy wheals, or
winter tires already mounted on
wheel rims, consult your authorized
Audi Dealer. They have the technical
information necessary to advise you
which wheal rims and wheel bolts
are compatible with the original fac­
tory installations.
1ft WARNING
• Incorrect tire/wheel parts may
cause an accident and personal in­
jury. Such parts will adversely af­
fect the safe operation of your ve­
hicle. Always use tires, wheel rims
and wheel bolts that meat specifi­
cations of the original factory­
installed equipment.
• If wheel trim discs or a front
spoiler are Installed, make sura the
airflow for cooling the brakes is
not obstructed.
259

----------------------------------------------ALPHABETICAL
INDEX
-T echnical requiremen ts . . . 208
-li ps ........ ....... ... •.. .21 1
-T railer brakes .. .". . . . . . • . . 209
Tra nsporting heavy objects . . . . . . 88
fr ip computer . . . . . . . . .
. 146
Tr ip odometer . • . . . . • • .
. . 12 0
Tu rn signals .. .. .. .. . . ..
125, 156
u
Under coating ......... .
Unfast ening-Safety belt ..
Uni versal Transmi tter .. .
Unleaded fuel ...
Unp aved roads .
v
V- belt .. 19
8, 220
. . . . . 24
17 3
225 19 9
.. .. 249
Va let key .
Ve hicle battery .
Ve hicle care .
... ... ... ..... 56
245
- Exterior . . . . • • • • . . . • • . . . . • 212
- Interior · .. ..• .. ... ... ... .. . 217
-W indows . • • . . . . . . • . . . . 215 Vehicle
identification . . . . 290
Ve hicle identi fication label . .
291
Vehicle identification number . .
290
Vehicle jack . . . . . . . . . . . . .
265
Vehicle literature . . . • . . • • • • . . . . 2
Ventilati on . . . . . . . . . . . . • • • . . . 16
2
Vo ltage warning label ..• .. .... 291
Vo ltmeter 120
w
Warning and indicator lights . . . . . 1 0
Warn ing lights . . . . . . . . . . . . 1 0, 122
Warning I in dicator lights
- Airbag system . . . . . . . . . . . 125
- Anti-lock brake system . . . . . 125
- Battery voltage . . . . . . . . . . . . 143
-B rake.. ........ • • . . . . .
126
- Brake light . . . . . 141
- Brake pads worn
. . . . . • . 14
3
- Coolant level . . . . . .
. . .
141
- Coolant temperature 141
- Electronic power control . . . . 123
- Engine oil level . . . . . . . . . . . . 144
- Engine oil pressure . . . . . . . . . 143 -F
uel . . . . . . • • •• • . . • 143
- Gener ator 127
- Headlights I tail lights . . . . . . . 143
- High beam . . . . . . . . .
125
-M alfunction Indicator Lamp . 125
- Safety belts . . . . . . . . . . . . . . 127
- Speed warning . . . . • • • • 14
4
- Turn signals . . . . . •
125
-W asher fluid . . . • . . • • • • . . . 14
3
Warranty booklet . . . .. . . • . . . . . . 4
Was her reservoir . . . . . . . . . . . . 250
Washer system . . . . • . . . • . • . .. . . 16 0
Wheels ........... .... .. .. 252
Wheels replacement . . . . . . 255, 259
Window s.......... . • ... .. 69
- Cleaning . . . . . . . . . • . • • . . . . . 215
- Defrosting . . . . . . .
163
Wi ndshield washer container . . . 250
- Capacity . . . . . .
287
Wi oter operation
- Battery . . . . . . .
245
- Cooling system . . . .
238
- Snow chains 261
-T ires ...... .
- Ve hicle care 260
213
303