Transmission Not Go Into Gear problems of the 2016 Mercedes Benz CLA250

I was driving my cla in the rain on the 405n in irvine, CA at about 4pm to go to my new place of employment for onboarding. I was going approximately 25-30mph because of the weather and traffic it was very slow. I put my blinker on to merge over into the second lane and my car beeped and automatically went into neutral. I couldn't do anything, it felt like my steering locked up and I could only slightly move the wheel, my blind spot assist was inoperable, my dashboard lit up every light/warning sign it could and I could not switch gears. I had to slowly roll two lanes over into the emergency lane while it was pouring rain. I almost got rear ended because of how slow my vehicle was moving over. I did not turn the vehicle off because I wasn't sure if I would be able to restart it. I waited on the side of the freeway for 2 hours to get towed to the nearest dealership which was newport beach fletcher jones. About a week prior to this I had my battery changed at mercedes because it completely died and wouldn't hold a charge. When I got to the vehicle I was informed that 2-3 other cla's came in the same day, with the same problem.