On page 147 of your owners manual (hopefully you have one) it says that if the power supply was interrupted (battery) you should re-sync the ESP.

1. Turn the ignition switch on/run.
2. Rotate the steering wheel to center.
3. Rotate the steering wheel completely to the left.
4. Rotate the steering wheel completely to the right.
5. Bring the steering wheel back to center.

The BAS/ESP malfunction light will go out.

If it is still illuminated, we got a problem.

But for now, Cheers and enjoy this wonderful little hands on hot rod sports car.