Relating to the diagnosis, maintenance, and repair of certain motor vehicles; providing a civil penalty.

HB 4555 would require manufacturers and dealers to provide vehicle owners with access to critical repair information, tools, and parts needed to diagnose, maintain, or repair vehicles independently. It prohibits "barriers" like forced waivers of repair choice or incentives to use dealerships, directly affecting vehicle owners and independent repair facilities. The bill establishes civil penalties for violations, ensuring owners can choose their repair provider without restrictions. Key provisions define "critical repair information" as diagnostic tools, schematics, and calibration data, and clarify that owners (not dealers or manufacturers) hold these rights. This bill aims to increase repair competition and consumer choice in Texas.