2011 Nissan Frontier Crew Cab Owner's Manual - Page 307

AIR CLEANER WARNING ● Operating the engine with the air cleaner removed can cause you or others to be burned. The air cleaner not only cleans the air, it stops the flame if the engine backfires. If it isn't there, and the engine backfires, you could be burned. Do not drive with the air cleaner removed, and be careful when working on the engine with the air cleaner removed. ● Never pour fuel into the throttle body or attempt to start the engine with the air cleaner removed. Doing so could result in serious injury. WDI0686 LDI0465 VQ40DE The air cleaner filter should not be cleaned and reused. Replace it according to the maintenance log shown in the "NISSAN Service and Maintenance Guide." When replacing the filter, wipe the inside of the air cleaner filter housing and the cover with a damp cloth. To remove the VQ40DE air cleaner filter: 1 ᭺ QR25DE 2. Push down half of air cleaner to clear the bottom retainers. 3. Lift up on half of air cleaner to remove the air cleaner filter IN-CABIN MICROFILTER (if so equipped) The in-cabin microfilter restricts the entry of airborne dust and pollen particles and reduces some objectionable outside odors. The filter is located behind the glove box. Refer to the "NISSAN Service and Maintenance Guide" for change intervals. To replace the filter, perform the following procedure: Push down on the clips and remove the air cleaner cover. Remove the air cleaner filter. To remove the QR25DE air cleaner filter: A,᭺ B,᭺ C. 1. Unlatch the clips ᭺ 8-20 Maintenance and do-it-yourself