SL55/63/65/R230 AMG: using own cell phone in mercedes
A car is pretty horrible place for electronics to be, from the heat and vibration through to the electrical noise generated by the spark plugs and the networking must have been designed to be resilient to interference by using shielded twisted pairs, balanced signals, that sort of stuff.
I don't think Mercedes would put a car on market whose brakes failed just because one of the passengers was phoning ahead for pizza...
If the electronics was not designed to provide very good noise immunity, it would be in trouble and not just from mobile phones inside the car. There is a limit to what it can do, and if you decided to run your own FM broadcast station from inside the SL, you'd doubtess find garbage on the displays and odd things not responding. I don't think a mobile phone presents any problem at all.







