Texas Family Code - FAM § 157.316. Perfection of Child Support Lien

(a) Except as provided by Subsection (b), a child support lien is perfected when an abstract of judgment for past due child support or a child support lien notice is filed or delivered as provided by Section 157.314.

(b) If a lien established under this subchapter attaches to a motor vehicle, the lien must be perfected in the manner provided by Chapter 501, Transportation Code, and the court or Title IV-D agency that rendered the order of child support shall include in the order a requirement that the obligor surrender to the court or Title IV-D agency evidence of the legal ownership of the motor vehicle against which the lien may attach. A lien against a motor vehicle under this subchapter is not perfected until the obligor's title to the vehicle has been surrendered to the court or Title IV-D agency and the Texas Department of Motor Vehicles has issued a subsequent title that discloses on its face the fact that the vehicle is subject to a child support lien under this subchapter.