dreaded idiot lights

Our Prius with 125K miles had noisy rear wheel bearing hubs so i ordered an EBay set...they looked well-made and smooth as silk.. unfortunately i also ordered new pads front and back because my eyesight is fading fast and i may not be able to do it soon...The rear hubs and pads went good the front even faster...Yes i disconnected the 12V battery before starting and i loosened the M/C cap while squishing the front calipers. No i didn't mangle the rear sensor connector wires and yes i firmly re-seated them onto the new hub assemblies. I pumped the brake pedal before hooking up the 12V battery. Only thing i did wrong was close the hatch lid so i had to reach in from the RR door and hook up the 12V negative cable. Anyway the noisy bearing noise is gone the brakes seem fine ( the old pads were not even bad...they still had 40% left. But of course nothing is easy when you get old so now the ABS the Traction lock The Brake and also another IDIOT (ME) lights are on. I was hoping to increase the value to $5K by fixing the rear bearing noise so we could sell it but now it is only worth $3K again. What really ticks me off is that 'Toyota Maintenance' guy from overseas has a UTube video on front brake pads replacement and he NEVER mentions the 12V disconnect! He must know something i don't.