Flashing Transmission Oil Temperature light?

Yesterday I drove about 3 blocks and my At Oil Temp (flashing), ABS, Hill Assist, and Traction control all lit up suddenly. The car drives fine and transmission shifts great, haven't had any lag or hesitation. I pulled over and shut the car off to let it cool for an hour. Started it up again, all the lights were off. As soon as I pulled forward the lights came on again. Tried again 6 hours later, started car no lights on, let it idle for 10 minutes, no lights came on. As soon as I backed the car up the lights came on again. The only time they come on is when the car actually moves, I can switch from reverse to drive, and it won't pop on until I release the brake and the car starts to move.
Battery has corrosion on it I had it tested, at first it wouldn't read at all then it said battery was good. The check engine light is not on so diagnostics did not pull any codes. The brake pads are bad, and I was about to replace them when this happened.