2011 Lexus RX 450h Owners Manual - Page 599

4-3. Do-it-yourself maintenance n Inspection and adjustment procedure Tire valve Tire pressure gauge STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 Remove the tire valve cap. Press the tip of the tire pressure gauge onto the tire valve. Read the pressure using the gauge graduations. If the tire inflation pressure is not at the recommended level, adjust the pressure. If you add too much air, press the center of the valve to deflate. After completing the tire inflation pressure measurement and adjustment, apply soapy water to the valve and check for leakage. Put the tire valve cap back on. n Tire inflation pressure check interval You should check tire inflation pressure every two weeks, or at least once a month. Do not forget to check the spare. 518