Yes, although I don't recall a 12-CD changer as a factory option.  If it is
a factory supplied unit, try United Audio in New York.

My Lexus dealer got me one for $200; it was a simple bolt in replacement
that took me about 15 minutes.

Also, I had save these resources from earlier postings to this newsgroup.
Don't know if the info is current:

crodriguez@comcast.net can repair Pioneer CDs that are bad:
I own a company in Maryland that repairs Lexus
(Pioneer) changers. I would be willing to have you
ship it to us. The usual 'reman' cost is $200 flat, plus
shipping. Let me know if you want to go that route.

As far as aftermarket goes, there isnt much. You
best bet will be FM Mod and isnt the greates choice.

Hi to the Group
We are a repair shop that deals only with factory radios and CD
players,changers. we have flat rate repair prices ,one price and no hidden
charges. and units are totally refurbished with a one year "like new"
warranty. We also sell or exchange your unit for a refurbished unit .Email
us on our dial up line at
mohawk@dreamscape.com <mailto:mohawk@dreamscape.com> or call 315-735-1423