Hi, I own a 2009 Grande Punto. About a week ago, while performing a parking maneuver with the A/C, radio, and lights on, the steering wheel became stiff and the EPS light came on. To test it, my friend and I repeated the same scenario, and the steering stiffened again. There's no issue while driving; so far, everything seems fine when the car is in motion. We replaced the battery, but the issue has occurred a few more times at low speeds or when idling. What could be the problem, and where should I focus my attention?