3794-2. Maintenance4Maintenance and careEmission 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.nIf 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. Cont act your Lexus dealer to servicethe vehicle.nYour vehicle may not pass the I/M test:lWhen the 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.lWhen 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.nWhen the malfunction indicator la mp 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.nIf your vehicle does not pass the I/M testContact your Lexus dealer to prep are the vehicle for re-testing.
