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:

    Electronic key battery
    Replace the battery with a new one if it is discharged. - You will need the following items: l Flathead screwdriver (To prevent damage to the key, cover the tip of the screwdriver with rag.) l S ...

    ACTIVATING “APPS” Each time “Apps” is activated, the system checks for updates. When there are no updates available, the main menu screen will be displayed right after a screen indicating ...

    Emergency flashers
    The emergency flashers are used to warn other drivers when the vehicle has to be stopped in the road due to a breakdown, etc. Press the switch. All the turn signal lights will flash. To tur ...