Sorry to hear that.

 

I've had this same error on my 2019 CLS450 over a year ago. Scared the living crap out of me because I had never had any issues with the car before. Crazy part is that the error/shutdown happened after the battery recall was done on my car. I immediately shut the car down after almost being side swiped by on coming traffic. Waited 5 minutes and restarted the car. The check engine light was on but the car ran fine. I went straight back home afterwards. I don't drive the car often since it's a weekend good weather car. So, I just ordered my battery charger this morning. I dont want anymore issues.