Hi, the display on the radio in my 1993 Jaguar Daimler XJ40 shows only comma signs and not "code" after battery has been detached. It is possible that the former owner entered the wrong security code more than 3 times. The radio is always left on and half of the comma signs on the display have slowly disappeared one after the other. Is this some form of representation of how long the radio is in security lock mode? The radio has been on for at least 30 hours so I'm getting rather fed up not being able to enter the security code. Any idea? Thanks in advance!

 

How can you leave the radio on for 30 hours? Mine is dead when I remove the ignition key.

It should have cleared after about an hour, allowing you to have another attack.

 

This is a really dumb question but Ill ask anyway.
Have you checked the fuses?.
Have you checked the fuse behind the radio?.
If the main fuse blows, but the aux line is still live couldnt the sterio "act" as though its "on"?