2008 Toyota Tacoma Owners Manual - Page 265

08 02.19 LS19013a When installing the filter in the filter outlet, follow the instructions indicated on the label. INFORMATION The air filter should be installed properly in position. The use of air conditioning with the air filter removed may cause deteriorated dustproof performance and then affect air conditioning performance. 241 2008 TACOMA from Apr. '08 Prod. (OM35898U)