Charging system warning

Question by stanleybuddyschultheis posted 1 week 2 days ago in Mercedes-Benz

After driving in a shallow, potentially salt, flood water and getting splashed over the entire car by a truck, I started getting a service warning "charging system not performing properly" on my 2011 E350 Convertible. I get it the first time I start but then goes away until next morning. Car starts fine. Any thoughts?