What is indicated by the ABS and check engine lights during the safe start?

During the safe start procedure, the ABS (Anti-lock Braking System) and check engine lights serve as important indicators of the vehicle's operational status. When the vehicle's ignition is turned on, these lights should illuminate briefly to indicate that the system is self-checking. This moment allows the driver to verify that the lights are functional and that the system is capable of providing alerts for any issues.

Once the self-check is complete, both lights should turn off. This indicates that there are no existing faults with the ABS or the engine system at that moment, confirming that the vehicle is in a condition that allows safe operation. If the lights remain on after the initial check, or if they blink, it signifies that there is a problem that needs attention, which could compromise vehicle safety.

This understanding is essential during the pre-trip inspection as it provides crucial information regarding the functionality of critical safety systems. Recognizing this sequence is part of the routine to ensure the vehicle is in good working order before beginning a trip.