ford fd3000 car radio says locked what can i do?

mirce ford fd 3000
serial number is m048628

mirce
January 2011

thomas
code 3136
Please note that code entry is only possible when the four lines are flashing in the display. If the display continually shows four bars " - - - - " then the unit may be codelocked and will need to be left switched on up for up to two hours to reset before another code entry attempt is possible.
if not then mail me at codehelp(at)hotmail.co.uk and i tell you what you need to do

hay88
January 2011