software glitch making rav4 hybrid go dead

Batteries typically on average only last four years, from your question it seems your vehicle is over 4 years old, so nothing out of the ordinary. Any car will need maintenance and require work to keep it running. If you need a vehicle to get to work, consider asking for a loaner car at the dealer.

Many vehicles require the computers to be powered up at all times. So if the battery is dead the computers will have to be reprogrammed by the Dealer. Also, the computers must be kept powered up during a battery replacement. That's what a memory saver is used for. If you don't use the vehicle much you need to keep the battery charged by either using a battery tender or running the engine for about an hour once a week or so. Hope that helps! Jim