4414-2. Maintenance4Maintenance and careGS_G_U (OM30C11U)June 30, 2011 8:14 amEmission inspection and maintenance (I/M) programsSome states have vehicle emission inspection programs which includeOBD (On Board Diagnostics) checks. The OBD system monitors the oper-ation of the emission control system.■ If the malfunction indicator lamp comes onThe OBD system determines that a problem exists somewhere inthe emission control system. Your vehicle may not pass the I/M testand may need to be repaired. Contact your Lexus dealer to servicethe vehicle.■ Your vehicle may not pass the I/M test:● When the 12 volt battery is disconnected or dischargedReadiness codes that are set during ordinary driving are erased.Also, depending on your driving habits, the readiness codes maynot be completely set.● When the fuel tank cap is looseThe malfunction indicator lamp comes on as a temporary mal-function and your vehicle may not pass the I/M test.■ When the malfunction indicator lamp goes off after several driv-ing tripsThe error code in the OBD system will not be cleared unless thevehicle is driven 40 or more times.■ If your vehicle does not pass the I/M testContact your Lexus dealer to prepare the vehicle for re-testing.
