I was having hard start and super bad gas mileage, so I assumed it was fuel pressure regulator, but local lexus dealership told me they never really saw them go out, so to change fuel dampener. I did but whe I started car I forgot to plug in mass airflow sensor. it idled funny so I connected everything back right. started car again. when I did seemed fine but now check vsc message on now. I was wondering if I unplug batter if it will rest the computer. I'm assuming that's the problem, but I'm open to anyone thought about what else it could be