Kia Optima 2011 Owner's Manual page 328

Maintenance
OVG079016
3. Replace the climate control air filter.
4. Reassemble in the reverse order of
disassembly.
✽ ✽ NOTICE
When replacing the climate control air
filter install it properly. Otherwise, the
system may produce noise and the effec-
tiveness of the filter may be reduced.
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