As per lexus dealership, the electrical wires were chewed by rodents while parked in the driveway. after reading about this on the internet, it appears that this is a consistent problem with lexus vehicles because of the use of soy based electrical wires which the rodents are attracted to. none of mine or any other vehicle in the neighborhood have been affected by rodents, except for this 2019 model and it happened the very first time that it was not used for more than a couple of days.