I have an 03 x type wo/nav. The radio keeps switching back and forth from mute to play to mute to play....sometimes once per second. Sometimes once in an hour. It is driving me crazy.

Thinking back, this did start at a time when I was having battery problems. Did I fry the radio jumping the car (no, not reversed polarity), or do I go on a search and destroy mission for wiring shorts? Anyone ever had this problem?

 

My 2004 XJ8 (premium sound) started doing the same thing last week. It is not vibration sensitive as I've had it happen while sitting with the car off and the radio playing (ignition to acc). It's usually worse when I first start up the car.

I also had my remote switches on the steering wheel stop functioning for 5 minutes yesterday. I'm thinking this may be related.

Anyone have any ideas on this? I wonder how easy it is to swap out the switch block.

 

I'd be willing to bet it's the mute button on your steering wheel. (the one to answer the not built in phone)

I would try to access the switches and spray contact cleaner on the contacts.