gambari

Need some help here pals. I had the K40 radar installed when i purchased my car about 9 years ago so i am pretty used to all its regular tweets, clicks, and beeps. About three weeks ago however, it went into this mode where it constantly makes this dingish clicking sound at precise intervals, and would still alarm on active radar in between. I have tried changing from city to highway, powering off and on, removing the main battery but it goes right back to that mode. It is driving me batty. Anyone know of a fix?