My battery died, so I needed a replacement. Only thing was, when I switched it out, my radio locked its self out, now I can't use it!

I took the head unit out, and this is what it says:

model number 39100-S2A-A010

ref. no. CQ-JH0060A

Serial no. 00A16495

p.s. I got the car used, so I don't have any paperwork on it at all.

 

You have to go to a dealer. Show them your proof of ownership, and they can look up the code for you. They will need the serial number, so good thing you already looked it up.

 

Since I already did the "work" of pulling out the radio, will there be a charge for them to look it up?

 

Some dealership charges, some don't, just call around until you get someone that doesn't......