2007 Prius Triangle, VSC, TPM, and constant drain of 12 V battery

The first sympton I noticed was the triangle, VSC, and TPM lights on while i was driving. I immediately returned home and parked the car. I got on this Prius chat to figure out what was wrong. I put the car in maintenance mode and noticed that the 12 V battery was at 11.6. There were no codes. I disconnected the battery and had took it to autozone to charge. The battery was at 64% and they charged it to 100. I put the battery back in the car and it started right away. i drove around for 30 minutes and parked. That was a Saturday. By Tuesday, my car was dead again. The car's electrical system turned on but it would not go into drive. I removed the 12 V battery again, took to autozone to charge. I put the battery back in but the car would not go into drive. I had it towed to the mechanic who found that there was a 90milliamp drain on the battery because - wait for it- the KEYFOB needed a new battery. Yeah. So they replaced the battery in the keyfob and tested the drain and it was down to 10. So let the keyfob be one of the simple things you check before replacing battery or the inverter.