2008 Toyota Sienna Owners Manual - Page 408

08 SIENNA_U (L/O 0801) 5. Install the filter to the filter case. Position the filter and the case so that the "↑UP" mark is pointing up. 6. Insert the filter case in the filter outlet, keeping the arrow pointing up. NOTICE To prevent damage to the air conditioning system, do the following. z When using the air conditioning system, make sure that a filter is always installed. z When cleaning the filter, do not clean the filter with water. 367 2008 SIENNA from Aug. '08 Prod. (OM45455U)