Throttle Control/Powertrain malfunction?

I had to replace the headlight and to do so I removed the battery. After replacing the battery the car wouldn't idle very good and the the "Stop Safely" light came on. I did a reset that you described in one of your videos but now when I try to start the car the "stop safely" light comes on and the wrench illuminates. According to the owner's manual the wrench is for the powertrain system. The car ran fine before replacing the headlight so now I am at a complete loss. I live in a very rural area and do not have easy access to anyone who can run diagnostics. Any suggestions?