Toyota 4runner 2009 User Manual page 397

Replacement method
n
Checking interval
n
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to
the "Scheduled Maintenance Guide" or "Owner's Manual Supplement".)
n 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
n
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the
system.
4-3. Do-it-yourself maintenance
Remove the filter case.
Remove the air conditioning
filter and replace it with a new
one.
The "↑UP" marks shown on the
filter should be pointing up.
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