The engine air filter on a 2010 Lexus RX 350 is located in the engine compartment, specifically in a rectangular housing near the rear of the engine bay, close to the windshield. To access it, you typically need to remove the cover that secures the air filter housing. This is usually done by unclipping or unscrewing a few fasteners. Once open, you can easily replace the air filter.
The 2010 Lexus IS-250 has a V6 engine.
The 2010 Lexus IS-350 has a V6 engine.
The 2010 Lexus IS-F has a V8 engine.
The 2010 Lexus LS-460 has a V8 engine.
The 2010 Lexus GS-350 has a V6 engine.
The 2010 Lexus IS-250-C has a V6 engine.
The 2010 Lexus GX-460 has a V8 engine.
The 2010 Lexus GS-450H has a V6 engine.
The 2010 Lexus RX-450H has a V6 engine.
The 2010 Lexus RX-350 has a V6 engine.
The 2010 Lexus IS-350-C has a V6 engine.
The 2010 Lexus ES-350 has a V6 engine.