Page 237 of 306

VEHICLE CA
RE---------------------------------------------------
Adding engine oil
A Always heed all WA RNINGS
r!!J on page 232.
• Turn off the engine.
• Unscrew the oil cap from the cylinder
head cover.
• Add oil by a half quart (half liter) at a time.
• Check the oil level with the dipstick.
:236 The
oil level must never be above the
"a .. range.
Otherwise oil could be drawn into the crank
case breather and get into the atmosphere
through the exhaust system. The oil
would bum then In the catalytic con
verter and cause damage.
� WARNING
Spilled oil is a fire hazard. The oil
filler cap must be secure to avoid
an oil spill.
• Carefully screw the oil cap back on and in
sert the oil dipstick all the way. Otherwise
oil could leak out when the engine is run
ning. Changing
the engine oil
The engine oil must be changed according
to the intervals specified in your Mainte
nance booklet.
This is very important because the lubricat
ing properties of oil diminish gradually dur
ing normal vehicle use.
Under some circumstances the engine oil
should be changed more frequently.
Change oil more often if you drive mostly
short distances, operate the vehicle in dusty
areas or under predominantly stop-and-go
traffic conditions, or have your vehicle
where temperatures remain below freezing
for exte nded periods.
Detergent additives in the oil will make
fresh oil look dark after the engine has been
running for a short time. This is normal and
is not a reason to change the oil more often
than recommended.
Page 240 of 306

Checking the
engine coolant
level
The coolant expansion tank is located on the
left of the engine compartment -see il
lustration.
The coolant level is automatically monitored
by the Auto-Check System -see page 141.
However, it is still recommended to check
the coolant lev�l visually from time to time
and always before going on a longer trip.
�W ARNING
To reduce the risk of being burned.
never open the hood if you see or
hear steam or coolant escaping
from the engine compartment.
Wait until no steam or coolant can
be seen or heard before carefully
opening the hood and following
the precautions on the next page.
Always heed all WA RNINGS
on page 232. To
obtain an accurate reading, the engine
must be switched off.
Since the expa nsion tank is transparent, the
cap need not be removed to check the cool
ant level.
The coolant level must be between the
"MIN" and "MAX" marks when the en
gine is cold and can be slig htly above the
"MAX" mark if the engine is warm. VE
HICLE CARE
The expansion tank in your vehicle is
equipped with an electric coolant level
checking device.
When the coolant level is too low, the warn
ing light (see page 141) in the Auto-Check
System will blink until you add coolant and
the coolant level has been restored to nor
mal.
Coolant losses
Coolant losses may indicate a leak in the
cooling system. In the event of coolant
losses, the cooling system should be in
spected immediately by your authorized
Audi Dealer. It is not enough merely to add
coolant.
In a sealed system, losses can occur only if
the boiling point of the coolant is exceeded
as a result of overheating.
239
Page 249 of 306

VEHICLE CA
RE----------------------------------------------------
When disconnecting and
connecting the battery ...
When you disconnect the vehicle battery
please note the following:
- some data stored in the driver informa-
tion system are erased,
- the clock goes out,
- the factory installed radio locks up,
- the Engine management system,
- the one-touch-u p and one-touch-down
functions of the power windows no lon
ger work,
- all stored seat positions in the memory*
are erased.
Af teryou reconnect the battery, you must
reset the clock. � page 118.
You also have to reset the Engine manage
ment system -see "Starter Switch "
�pa ge 113.
You also have to reset the one-touch-up and
one-touch�down feature on power win
dows -see "Power windows "
�p age 71.
248 You
have also reset the seat memory* -see
"Seats"
� page 81.
The radio must be re-coded with the correct
radio code - see your radio Operating In
structions.
Replacement battery
A replacement battery must have the same
specifications and dimensions as the origi
nal equipment battery. Specifications are
listed on the battery housing.
When installing the battery, make sure the
ignition and all electrical consumers are
switched off.
r.Gb. Because of the problem of �proper di
sposal of a battery, we
recommend that you have your au
thorized Audi Dealer change the
battery for you. Batteries contain
sulfuric acid and lead and must al
ways be disp osed of properly ob
serving all environmental regula
tions. Air
cleaner
A dir ty air cleaner element not only reduces
the engine output and increases fuel con
sumption considerably but can also cause
premature engine wear.
Normally, it is not necessary to service the
air cleaner more often than recommended
in the Maintenance booklet. If the vehicle is
driven on very dusty roads, the air cleaner
must be serviced more frequently, even dai
ly.
If your air cleaner element must be
changed mora frequently, we rec
ommend that you have the air clean
er serviced by your authorized Audi
Dealer or a qualified workshop.
The air cleaner element must never
be cleaned or soaked with gasoline,
cleaning solvents or oil.
g Always heed all WARN INGS
t!!3 on page 232.