Lexus IS250 2006 Owner's Manual page 314

4-3. Do-it-yourself maintenance
STEP 6
Changing interval
■
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
■
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.
296
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.