Lexus LX 570 2009 Manual page 604

4-3. Do-it-yourself maintenance
Checking interval
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Inspect, clean 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, refer
to the "Warranty and Services Guide", "Owner' s Manual Supplement" or "Sched-
uled 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
To prevent damage to the system
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When using the air conditioning system, make sure that a filter is always installed.
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When cleaning the filter, do not clean the filter with water.
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