Kenwood HU security passwords???

Ok, I replaced my battery in my Accord today and my Excellon HU 815 wants my 4 digit password. I'm sure I wrote it down in the manual which is at home. But now I'm at work and I know the 4 digit password but when I punch it in, nothing happens. Does anyone know what button I have to press to hit enter once I put the 4 digit password in?

switch your headunit on..Keeep it on till it sayd code as your have locked it and it needs i think three hours to four to reset then enter the code again it should work

I figured it out. I have to enter the 4 digit code and hold the DIS (display button) for 3 sec. After that the screen simply says APPROVED and it powers up. What would happen if you forgot the code? Is there a way to reset the headunit by removing the internal battery or what?:smoker2:

what do could do is get the "Software" for the unit.Most concist of prongs which you probe onto the ic its read it an dtell you the code i think. ( not sure i have heard that from one of my mates)