Toyota Prius c 2014 Owner's Manual page 402

4-3. Do-it-yourself maintenance
STEP 5
STEP 6
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Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, more frequent
cleaning or early replacement may be required. (For scheduled maintenance
information, please refer to the "Scheduled Maintenance Guide" or "Owner's
Manual Supplement".)
■
If air flow from the vents decreases dramatically
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.
400
Remove the filter cover.
Remove the air conditioning
filter and replace it with a new
one.
The "↑UP" mark shown on the
filter should be pointing up.