California Code, Vehicle Code - VEH § 40207

(a) The notice of delinquent parking violation shall contain the information specified in subdivision (a) of Section 40202 or subdivision (a) of Section 40248, as applicable, and Section 40203, and, additionally shall contain a notice to the registered owner that, unless the registered owner pays the parking penalty or contests the citation within 21 calendar days from the date of issuance of the citation or 14 calendar days after the mailing of the notice of delinquent parking violation or completes and files an affidavit of nonliability that complies with Section 40208 or 40209, the renewal of the vehicle registration shall be contingent upon compliance with the notice of delinquent parking violation.  If the registered owner, by appearance or by mail, makes payment to the processing agency within 21 calendar days from the date of issuance of the citation or 14 calendar days after the mailing of the notice of delinquent parking violation, the parking penalty shall consist solely of the amount of the original penalty.  Additional fees, assessments, or other charges shall not be added.

(b) This section shall become operative on January 1, 2016.