2011 Lexus CT 200h Owners Manual - Page 532

4-3. Do-it-yourself maintenance STEP 5 Slide and pull out the filter. Replace it with a new one. The "↑UP" marks shown on the filter should be pointing up. n Checking interval 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 "Owner's Manual Supplement" or "Scheduled Maintenance".) n If air flow from the vents decreases dramatically The filter may be clogged. Check the filter and replace if necessary. NOTICE n 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. 538 CT200h_U (OM76004U)