(1) Beginning in model year 2018, except as provided in subsection (e), manufacturers of motor vehicles sold in the commonwealth, including heavy duty vehicles that are not heavy duty vehicles built to custom specifications sold in the commonwealth for commercial purposes, shall provide access to their onboard diagnostic and repair information system, as required under this section, using an off-the-shelf personal computer with sufficient memory, processor speed, connectivity and other capabilities as specified by the vehicle manufacturer and: (i) a non-proprietary vehicle interface device that complies with the Society of Automotive Engineers standard J2534, Society of Automotive Engineers J1939, commonly referred to as SAE J2534 and SAE J1939, the International Organization for Standardization standard 22900, commonly referred to as ISO 22900 or any successor to SAE J2534, SAE J1939 or ISO 22900 as may be accepted or published by the Society of Automotive Engineers or the International Organization for Standardization;(ii) an onboard diagnostic and repair information system integrated and entirely self-contained within the vehicle, including, but not limited to, service information systems integrated into an onboard display; or(iii) a system that provides direct access to onboard diagnostic and repair information through a non-proprietary vehicle interface, such as ethernet, universal serial bus or digital versatile disc. Each manufacturer shall provide access to the same onboard diagnostic and repair information available to their dealers, including technical updates to such onboard systems, through such non-proprietary interfaces as referenced in this paragraph. Nothing in this chapter shall be construed to require a dealer to use a non-proprietary vehicle interface specified in this paragraph, nor shall this chapter be construed to prohibit a manufacturer from developing a proprietary vehicle diagnostic and reprogramming device; provided, however, that: (i) the manufacturer also complies with this paragraph; and (ii) the manufacturer also makes this device available to independent repair facilities upon fair and reasonable terms and otherwise complies with subsection (a).Notwithstanding anything in the preceding paragraph, motor vehicle owners' and independent repair facilities' access to vehicle on-board diagnostic systems shall be standardized and not require any authorization by the manufacturer, directly or indirectly, unless the authorization system for access to vehicle networks and their on-board diagnostic systems is standardized across all makes and models sold in the Commonwealth and is administered by an entity unaffiliated with a manufacturer.