ok, as you cannot locate the lienholder, you need to document this for DMV
to remove the lien. These are the steps you need to follow:
1. Send a certified letter addressed to the legal owner shown on your vehicle registration.
2. Submit the returned certified letter, or the postal receipt after 30 days, to the DMV.
3. Complete a Statement of Facts (REG 256). The REG 256 should include the license plate number, vehicle identification number (VIN), the year and make of the vehicle, and indicate that the legal owner is unavailable.
4. Attach a Motor Vehicle Defective Bond, purchased in the current retail value of the vehicle. The bond must be purchased from a business currently licensed to do business in California. Consult the Bonds-Surety & Fidelity section of the phone book.
5. Keep a copy of all documents for your records.
You may submit these documents either in person or by mail
For your reference, see http://www.dmv.ca.gov/about/lob/lob_faq.htm#q9