Shop Lexus RX 400h Mass Air Flow Sensor. Mass Air Flow Sensor - Repair or Replace If the mass air flow Surges - OEM Lexus Part # 2220431020 (22204-31020, 222040H010, 222040P010, 2220431010)

METER SUB-ASSY, INTAKE AIR FLOW

Fits ES 350, GS 350, IS 250, IS 250C, IS 350, IS 350C, IS F, RX 350

Mass Air Flow Sensor - Repair or Replace
If the mass air flow sensor or MAF meter in your Lexus RX 400h is failing, you’ll notice in addition to the check engine light that your engine may crank and not start, or that the engine speed surges at idle.