On my first cross country trip with my 280 SL, I discovered that my iPhone charging cable does not fit snugly enough into the car's lighter plug socket to make a good connection. That created problems at several points on the trip after the iPhone battery died a few hours into the driving day.
I am advised by a Mercedes mechanic that trying to adjust the socket is a tricky and inadvisable approach. He recommends installing a socket -- perhaps a USB socket anchored in the center tray -- as a more desirable solution.
Questions: Do you agree and, if so, what is the most desirable upgrade -- a USB socket or something even newer?