(a) Thirty days or more prior to the commencement of an action for damages pursuant to this title, the consumer shall do the following:

1. (1) Notify the person alleged to have employed or committed methods, acts, or practices declared unlawful by Section 1770 of the particular alleged violations of Section 1770.

2. (2) Demand that the person correct, repair, replace, or otherwise rectify the goods or services alleged to be in violation of Section 1770.

   The notice shall be in writing and shall be sent by certified or registered mail, return receipt requested, to the place where the transaction occurred or to the person’s principal place of business within California.

(c) No action for damages may be maintained under Section 1781 upon a showing by a person alleged to have employed or committed methods, acts, or practices declared unlawful by Section 1770 that all of the following exist:

1. (1) All consumers similarly situated have been identified, or a reasonable effort to identify such other consumers has been made.
2. (2) All consumers so identified have been notified that upon their request the person shall make the appropriate correction, repair, replacement, or other remedy of the goods and services.
3. (3) The correction, repair, replacement, or other remedy requested by the consumers has been, or, in a reasonable time, shall be, given.
4. (4) The person has ceased from engaging, or if immediate cessation is impossible or unreasonably expensive under the circumstances, the person will, within a reasonable time, cease to engage, in the methods, act, or practices.