Emissioinspectioand maintenance (I/M) programs

Lexus LX / Lexus LX Owners Manuals / Maintenance and care / Maintenance / Emissioinspectioand 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:
l 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.

l 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

    See also:

    Operating HomeLink®
    Press the appropriate HomeLink® button. The HomeLink® indicator light should come on. The HomeLink® compatible transceiver in your vehicle continues to send a signal for up to 20 seconds as lo ...

    AVS (Adaptive Variable Suspension system)
    AVS controls the suspension and steering wheel operation according to the road and driving conditions. To select a driving mode, shift the damping mode select switch forward or backward. 1 F ...

    Driving the vehicle
    The following procedures should be observed to ensure safe driving: Starting the engine Driving With the brake pedal depressed, shift the shift lever to D. Release the parking brake. Graduall ...