Dash lights/warning system on 2004 Toyota Highlander

We recently encountered a problem with the dash light warning system, ABS-Brake/VSC-track off, engine icon,tire pressure warning icon, all light up and some go off&on, sometimes they all go off. This all can happen in a 2-3 hour trip.Have not yet performed a diagnostic check.

Asked by for the 2004 Toyota Highlander