Lexus IS 250C 2014 Manual page 448

4-3. Do-it-yourself maintenance
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Replacement method
Checking interval
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Inspect and replace the air conditioning filter according to the maintenance sched-
ule. In dusty areas or areas with heavy traffic flow, early replacement may be
required. (For scheduled maintenance information, please refer to the "Owner's
Manual Supplement/Scheduled Maintenance".)
If air flow from the vents decreases dramatically
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The filter may be clogged. Check the filter and replace if necessary.
NOTICE
When using the air conditioning system
■
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the system.
448
Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.
The "UP" marks shown on the
filter and the filter case should
be pointing up.