Emission inspection and maintenance (I/M) programs

Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system.

If the malfunction indicator lamp comes on

The OBD system determines that a problem exists somewhere in the emission control system. Your vehicle may not pass the I/M test and may need to be repaired. Contact your Lexus dealer to service the vehicle.

Your vehicle may not pass the I/M test:

When the battery is disconnected or discharged Readiness codes that are set during ordinary driving are erased.

Also, depending on your driving habits, the readiness codes may not be completely set.

- When the fuel tank cap is loose The malfunction indicator lamp comes on as a temporary malfunction and your vehicle may not pass the I/M test.

When the malfunction indicator lamp goes off after several driving trips

The error code in the OBD system will not be cleared unless the vehicle is driven 40 or more times.

If your vehicle does not pass the I/M test

Contact your Lexus dealer to prepare the vehicle for re-testing.

    See also:

    Playing MP3 and WMA discs
    - Type A - Type B - Type C Selecting and scanning a folder Selecting a folder one at a time Press or to select the desired folder. Returning to the first folder Press and hold until you ...

    Reporting safety defects for U.S. owners
    If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in ad ...

    Do-it-yourself service precautions
    If you perform maintenance yourself, be sure to follow the correct procedure given in these sections. CAUTION: The engine compartment contains many mechanisms and fluids that may move sudde ...