Hyundai Yeni i20 2023 Owner's Manual page 643

Moisture breeds corrosion
Moisture creates the conditions in which
corrosion is most likely to occur. For
example, corrosion is accelerated by high
humidity, particularly when temperatures
are just above freezing. In such con-
ditions, the corrosive material is kept
in contact with the vehicle surfaces by
moisture that is slow to evaporate.
Mud is particularly corrosive because it
is slow to dry and holds moisture in con-
tact with the vehicle. Although the mud
appears to be dry, it can still retain mois-
ture and promote corrosion.
High temperatures can also accelerate
corrosion of parts that are not properly
ventilated so the moisture can be dis-
persed. For all these reasons, it is par-
ticularly important to keep your vehicle
clean and free of mud or accumulations
of other materials. This applies not only
to the visible surfaces but particularly to
the underside of the vehicle.
To help prevent corrosion
You can help prevent corrosion from get-
ting started by observing the following:
Keep your vehicle clean
The best way to prevent corrosion is to
keep your vehicle clean and free of corro-
sive materials. Attention to the underside
of the vehicle is particularly important.
• If you live in a high-corrosion area —
where road salts are used, near the
ocean, areas with industrial pollution,
acid rain, etc.—, you should take extra
care to prevent corrosion. In winter,
hose off the underside of your vehicle
at least once a month and be sure to
clean the underside thoroughly when
winter is over.
• When cleaning underneath the vehicle,
give particular attention to the com-
ponents under the fenders and other
areas that are hidden from view. Do
a thorough job; just dampening the
accumulated mud rather than washing
it away will accelerate corrosion rather
than prevent it. Water under high pres-
sure and steam are particularly effec-
tive in removing accumulated mud
and corrosive materials.
• When cleaning lower door panels,
rocker panels and frame members, be
sure that drain holes are kept open so
that moisture can escape and not be
trapped inside to accelerate corrosion.
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