See also:

Playing from an iPhone®
This feature supports the following iPhone model: • iPhone (3G – 3GS) To use the iPhone, follow the same instructions as stated earlier for using an iPod. ...

Speedometer
The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph). ...

Radio Reception
You may experience frequency interference and static during normal radio reception if items such as cellphone chargers, vehicle convenience accessories, and external electronic devices are plugged ...