Ready light not showing up, hybrid battery and battery replaced

Hello,
I have a 2004 Prius which has been sitting on my driveway for around a year and a half. I have recently been trying to get it working and since then have found that the hybrid battery is dead. I purchased a charger for the hybrid battery, charged the working cells and replaced the broken ones and then reinstalled the hybrid battery, originally upon doing this my the car would start and run however the engine would not turn on (I only test ran it for around 5 minutes after replacing the battery). That was around 2 weeks ago and now upon trying to start it all of the warning lights come on (except maintenance required) and the ready light will not come on, the car turns on (not the engine) but the car can only move from park to manual (not drive or reverse). I have since replaced the 12V battery to no avail, the same problems occur. I am trying to diagnose the issue but I am at a loss. My emergency brake light is stuck as on however my brake lights do come on when I push the brake. Additionally, when I check the voltage on my newly purchased battery it reads 12.4 from the back, but when I check the voltage from the hood of the car it reads around 11V, and the car for some reason will not turn off if I hold the brake when I press the power button, I can only turn it off when I am not holding the brake. Turning on the car works as normal except for not being able to put it in drive and all of the dash lights except the ready. Attached is a picture of what my dashboard looks like when I turn it on. Does anyone know what potential issues may be?