Can you reset the red triangle light?

I have a 2006 Prius and the headlights were not automatically leveling. Thanks to the wonderful report by Jason that detailed how to check the auto level sensor, we were able to remove it, take out the corroded springs and replace it with new springs. Unfortunately, when we put it back on the car, the red triangle light is on and the MID is showing that the leveling headlights is the problem. Is there any way to turn off that red triangle? Did it come on because the sensor was removed? I never got that light when the headlights stopped leveling. We were even thinking that perhaps the wires are reversed and the lights come on when the auto level sensor is working. Any advice would be appreciated.

 

When you disconnect the battery, does it affect anything except the codes?