Looks like it's a voluntary recall but it's world-wide, not only in california. Check these news
http://www.chinadaily.com.cn/english/doc/2...tent_345100.htm
http://times.hankooki.com/lpage/biz/200407...16291211910.htm
My friend from Taiwan said the recall include Taiwan's 2004 LS430, also.
However my car died on freeway before I heard the news, because LA's news did not say anything about this recall. And my dealer did not mention anything about recall after they fix my car, they just said "we replace your fuel pump and UPGRADE your transmission".