250 Cleaning and protec tio n
Cast (light) alloy wheels
Cast (light) alloy wheels require special care .
• Wash the whee ls with a sponge or hose
brush every other week.
• For deep cleaning afterwards, use only a
dedicated
aci d-fr ee cast alloy wheel cleaner .
• Rub a coat of
liq uid wax onto the r ims every
t h ree months. Be su re to reach and treat all
parts of the rim .
To preserve the decorat ive appearance of the
cast alloy whee ls, some specia l care is neces
sa ry. In addit ion to road dirt and sa lt, b rake
d ust is a lso corros ive. If left on for too long,
b rake dust can cause pitting.
Use only specia l
acid-free cleaners formulated
for a lloy rims . Safe p roducts are available at
your author ized Audi dealer. Never leave the
cleane r on the rims longe r than specified on
the label. If not rinsed off promptly, the acid
contained in some cleaners can attack the
threads on the whee l bolts.
Never use ab rasive or metal polishing clean
ing agents. If the protective coating has been
chipped, e .g. by k icked up road dirt, touch it
up as soon as possible.
A WARNING
- Moisture and ice on brakes may affect
braking efficiency¢
page 228, General
information.
Test the brakes carefully
each time you wash the veh icle .
- Always read and heed all WARNINGS and
other information
¢ page 245.
-
Body cavity sealing
The body cavity sealing does no t need to be
checked.
A ll body cavities which co uld be affected by
corrosion have been thoro ughly protected at
the factory.
This sealing does not require any inspection or
addit ional treatment . If any wax should seep
out of the cav ity when the ambient tempera- ture is high, it can be removed with a p
lastic
scraper and a suitable solvent.
A WARNING
-Solvents can be dangerous.
- Benzine is flammab le and toxic. If you
use benzine for removing the wax, keep
sparks, flame and lighted cigarettes
away. Never dump benz ine on the
ground, into open streams or down sew
age drains.
- Be sure to observe all safety and environ
mental regulat ions . Follow all instruc
tions on the container .
- Always read and heed all WARNINGS and
other information ¢
page 245.
, Chassis
Have the undercoating checked for damage
from time to time.
The lower body shell of your Audi is also thor
oughly protected against corros ion.
Any damage to the undercoating caused by road hazards should be repaired prompt ly .
A WARNING
Too much undercoating in the wrong p la
ces can cause a fire.
- Do not app ly additional undercoating or
r u stproof ing on or near the exhaust
manifold, exhaust pipes, catalytic con
verter or heat shields. While driving, the substance used for undercoating could
overheat and cause a fire.
'
- Always read and heed all WARNINGS and
other information ¢
page 245.
Exhaust tail pipes
Road salt and other corrosive materials will
damage the material in the exhaust tail pipes
if they are not cleaned regularly. Do not clean
the tail pipes with wheel cleaner, pa int polish,
chrome polish or other ab rasive cleaners.
Clean the tail pipes with car care products
that are suitable for stainless steel.
