MD HB1429

Manufacturers must provide owners and independent repair facilities access to the same diagnostic and repair information, tools, and software available to authorized dealers, on fair and reasonable terms, for model year 2002+ motor vehicles and model year 2013+ heavy-duty vehicles.

Motor vehicles with telematics systems sold beginning model year 2025 must include a standardized open data platform installed by an independent third party, allowing owners to easily access vehicle data and authorize independent repair facilities to perform diagnostics and repairs.

Farm equipment manufacturers must make documentation, parts, and tools available to owners and independent repair providers on fair and reasonable terms, and are prohibited from misrepresenting or withholding part numbers to prevent customers from comparison shopping.

Manufacturers may exclude security-related information (such as immobilizer reset codes) from general disclosure, but must make this information available through the National Automotive Service Task Force or a secure data release system.

Violations constitute unfair, abusive, or deceptive trade practices under Maryland's Consumer Protection Act, with enforcement through the Attorney General's office; the act takes effect October 1, 2026 and applies prospectively.