You use the radio control stick attached to the right of the steering wheel (assuming right Hand Drive). Use the thumbwheel to select the correct digit then press the button at the bottom of the thumbwheel to proceed to next digit entry.
Res
July 2009
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix in-car audio.