Radios have a wire built in for future connection to phone kits for muting the radio. I think all that the phone kit does is give it an earth when a call comes in. So if this wire happens to earth on a part of your car whether a car kit is installed or not you will get phone showing on the radio. Pull out radio and find this unused wire. It is probably toucing on something.
PHONE MUTE CONTROL
• Where available, press the PHONE
button to mute your audio unit.
• Press PHONE again to unmute
xxxxxx, February 2011
