2000 AUDI ALLROAD check engine light

CONT
ROLS AND EQUIPMENT
Warning /Ind icator lights
Yo ur vehicle is equipped with several impor­
tant warning and indic ator lights to help you
monitor the continued reliable operation of
your vehicle. Furthermore, certain func­
tions and vehicle components are consis­
tently monitored by the Auto-Check System
(see page 138). Please be sure to get to
know these lights so if one should come on
you know what to do.
12 2 �W
ARNING
• Failure to heed warning lights
and other important vehicle infor­
mation may result in serious per­
sonal injury or vehicle damage.
• Whenever stalled or stopped for
repair, move the vehicle a safe dis­
tance off the road, stop the en­
gine, and turn on the emergency
flasher -see page 152.
• The engine compartment of any
motor vehicle is a potentially haz­
ardous area. Before you check any­
thing in the engine compartment,
stop the engine and let it cool
down. Always exercise extreme
caution when working under the
engine hood. -sea page 232. -Always heed all WA RNINGS
l!!l on page 232, chapter ""En­
gine compartment ...

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Turn signals and
emergency flasher
Refer to "Turn signal I headlight d1mmer
switch lever and emergency flasher" on
pages 152 and 156 for details.
High beam �D
The indicator light lights up when the high
beams are switched on or when the head­
light flasher is used.
See "Turn signal I headlight dimmer switch
lever" on page 156 for details.
Malfunction Indicator
�
Lamp (MIL) CHECK
The Malfunction Indicator Lamp is part of
the On Board Diagnostic system (OBD).
The lamp comes on when the ignition is
switched on and will go out after the engine
is started and the idle has stabilized. This is
to assure you that the Malfunction Indicator
Lamp is working properly.
For more details, see page 128. Airbag
System AIR
BAG
The ind icator light for the airbag and belt
tensioner system must come on when
the ignition is switched on, and go out after
a few seconds. If the light does not go out,
or if it comes on while you are driving, this
ind icates a fault in the airbag I belt tensioner
syste m.
If the indicator light does not come on when
the ignition is switched on, this also indi­
cates a system malfunction. If any of these
conditions occur, have the air bag system in­
spected immediately by your authorized
Audi Dealer.
For more details, see page 25. Anti-lock
Brake System
USA models:
Canada models: ABS
8
This warn ing light monitors the ABS and
EDL (Electronic Differential Lock,
sys tems.
The light will come on for a few seconds
when the ignition is switched on. The light
will go out after an automatic check se­
quence.
For additional information on the ABS sy­
stem, see page 202.
� WARNING
If the ABS warning light does not
go out, or if it comes on while driv­
ing, the ABS system is not working
properly. The vehicle can then be
stopped only with the standard
brakes (without ABS,. You won't
have the protection ABS provides.
Contact your Audi Dealer as soon
as possible.
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ROLS AND EQUIPMEN T-------------------------------------------
Radio frequency display
If the radio is switched on and no second
priority faults are present, the OK symbol
will go out and the display will show the fre­
quenc y selected and various other informa­
tion. This feature depends on the type of ra­
dio fitted.
These displays are in addition to the radio
display -see separate operating instruc­
tions for radio.
13 8 Auto-Check
system
In addition to the warning lights the Auto­
Check System consistently monitors cer­
tain individual functions and components of
the vehicle as soon as the ignition is turned
on and when the vehicle is moving.
Malfunctions or urgent repairs are audi bly
signaled as well as displayed by red (prior­
ity 1) or yellow (priority 2) light symbols in
the instrument cluster.
You are thus reminded that a problem exists
which should be corrected for your conve­
nience and safety, and to prevent the risk of
considerable damage to your vehicle due to
cert ain malfunctions.
The Auto-Check System incorporates a
speed warning feature and is also used
to display certain radio information_
The following malfunctions or warnings can
be displayed: Red Symbols (priority
1)
Engine coolant level is too low/
Engine temperature is too high
(moving symbol).
Engine oil pressure is too low
(moving symbol).

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EQUIPMEN T
When the red blinking symbols appear,
three warning tones will sound at the same
time. These symbols represent Danger.
• Do not continue to operate the
vehicle. The problem muat be lo­
cated and corrected immediately.
Pull off the road to a safe area, well away
from traffic, stop the engine and operate the
emergency flasher. Use other warning de­
vices to alert motorists. Contact your autho­
rized Audi Dealer or a qualified workshop.
In the event of multiple malfunctions, the
symbols will blink successively in two-sec­
ond interva ls. The symbols will continue to
blink until the malfunction is corrected.
Note If a malfunction is detected while you are
using the Navigation System, the Naviga­
tion System display will be switched off for
a few seconds and the Priority 1 Warning
symbol will appear. After that, the symbol
will change into the Priority 2 display, and
the Navigation System will be visible once
again.
As long there is a Priority 1 malfunction
present, Priority 2 malfunctions will not be
displayed. Ye
llow Symbols (priority 2)
Brake light is defective
Headlight and/or taillight is defective
B rake pads worn
Windshield wiper fluid reserv oir
level is too low (moving symbol)
Fuel level is low (@)
�
0 Battery
voltage is too low/too high 0
Check engine oil level
Engine oil sensor defective �ENSOR
Speed warning (USA Models)
Speed warning (Canada Models)
Dynamic headlight dimmer
control not functioning 9
8
When the yellow symbols appear, only one
warning tone will sound at the same time.
These symbols represent a Warn ing.
Have the malfunction displayed corrected
as soon as possible. In the event of mul tiple
malfunctions, the symbols will appear suc­
cessively in two-second intervals.
139

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ROLS AND
EQUIPMENT--------------------
Test button
The test button can be used to perform the
following functions:
Checking the display
With the car stationary and with the ignition
on, you can check the symbols one after the
other by briefly push ing on the knob. The en­
gine can either be running or not. Perform­
ing this brief check assures you that the dis­
play is functioning properly. When driving,
you canno t check the function.
14 0 Calling
up driver information
When a first priority symbol is flashed up,
the accompanying driver information can be
called up in the display for assis tance.
For example: "SWITCH OFF ENGINE ;
CHECK OIL LEVEL".
Press the test button to call up this display.
The information disappears about 5 sec­
onds after the button is released again.
Operation
After switching on the ignition in selector le­
ver position P or N, the driver instruction
"WHEN STATIONARY APPLY FOOT­
BRAKE WHILE SELECTING GEAR'' will ap­
pear.
When a gear ("R", "0", etc.) is selected,
the driver instruction disappears and a func­
ti onal check is carr ied out automatically as
a result of operati ng the brake pedal.
If the functions monitored by the auto­
check system are working properly, the let­
ters "OK" will light up for a few seconds.

--------------------CONTROLS AND
EQUIPMEN T
If there are one or more faults, the driver in­
formation disappears about 15 seconds af­
ter the engine has been started and the ap­
propriate fault symbol appears in the
display.
If neither "OK" nor any other fault symbol
appear in the displa y, the auto-check sy­
stem must itself be checked. Displays
In case of a malfunction or component fail­
ure, the acoustic warning will sound and the
following symbols can appear.
Brake light
USA models:
Canada models: BRAKE
LIGHT
(@)
The following electrical components should
be checked, repaired or replaced, as neces­
sary:
• Brake light bulbs
• Fuses
• All wiring connections Engine
coolant
temperature /level
If the light flashes, either the coolant ten:­
perature is too high, or the coolant level1s
too low.
• If the light starts to f_lash, move
the vehicle a safe d1stance off
the road, stop the engine, depress
the emergency flasher switch, turn
off the engine and let it cool down.
Check coolant level. Top up as necessary
(see "Cooling system", page 238). ·
g Always heed all WA RNINGS
� on page 232.
141

CONT
ROLS AND EQUIPMENT---------------------
�W ARNING
• The engine compartment of any
motor vehicle is a potentially haz­
ardous area. Before you check any­
thing in the engine compartment,
stop the engine and let it cool
down. Always exercise extreme
caution when working under the
engine hood. Heed all of the
WA RNINGS on page 232.
• To reduce the risk of being
burned, never open the hood if you
see or hear steam or coolant es­
caping from the engine compart­
ment. Wait until no steam or cool­
ant can be seen or heard before
carefully opening the hood.
• Never touch the radiator fan.
The auxiliary fan is temperature
controlled and can switch on sud­
denly.
14 2 �
WARNING continued
• Reduce the risk of scalding from
hot coolant by following these
steps:
If the coolant reservoir cap must
be removed. wait until the en­
gine has cooled down.
- Protect face, hands. and arms
from escaping fluid and steam
by cov ering the cap with a large.
thick rag.
Tu rn the cap slowly and very
carefully in a counter-clockwise
direction while applying light.
downward pressure on the top
of the cap.
- To help avoid being burned. do
not spill antifreeze or coolant on
the exhaust system or hot en­
gine parts. Under some condi·
tions. the ethylene glycol in en·
gine coolant can catch fire. •
If a visual check shows the coolant level
and the V-belt normal, and the warning light
still does not go out, do not continue
driving. See your authorized Audi Dealer.
• If the coolant level and the V-belt are nor­
mal, the malfunc tion may be in the auxiliary
radiator fan. You can continue driving to the
nearest authorized Audi Dealer. The wind
from the moving vehicle and the main radia­
tor fan driven by the V-belt will be enough to
keep the angine cool. However, avoid idling
for a long time or driving very slowly.
If the V-belt is torn, the main radiator fan, the
power steering and the gener ator will also
not work.
Obtain expert assistance.
Refer to "Coolant temperature gauge" on
page 118 for detai ls.

---------------------CONTROLS AND EQUIPMENT
Engine oil pressure
If this warning light comes on, 1t Indi cates
that the engine oil pressure is too low.
• Stop the engine immediately,
check the engine oil level and
add oil if necessary.
If engine oil level is normal but the
light comes on again, do not con­
tinua to operate the vehicle. This
could damage the engine.
Tu rn the engine off and contact the nearest
Audi Dealer for assistance.
The oil pressure warning light is not
an indicator for low engine oil level.
To check the oil level, always use
dipstick (sea page 235).
Make it a habit to have the engine oil
level checked with every fuel filling.
A Always heed all WA RNINGS
� on page 232. Brake
pads worn
0
See your Audi Dealer promptly to have front
and rear brake pads checked and replaced
as necessary.
Headlights I tail lights
�
Check, repair or replace:
• Light bulbs
• Fuses
• Electrical connections.
Washer fluid
Replenish the windshield washer
fluid in the container (see page 250).
Fuel Pull into the next filling station and
fill up. Battery
voltage too high
t::::1
or too low
See your Audi Dealer promptly to locate and
correct the problem. The battery may be run
down, the generator may be overcharging,
or the V-belt tension may need adjustment.
The voltage in the electrical system is dis­
played on the voltmeter. See page 120 for
additional details.
143