scope:

The standard 18541 is structured into following parts:
- Part 1: General information and use case definition
- Part 2: Technical requirements
- Part 3: Functional user interface requirements
- Part 4: Conformance test
- Part 5: Heavy duty specific provisions
- Part 7: Remote diagnostic support for heavy duty vehicles (currently under definition, see NWIP N421) Reading part 1 of this standard will provide an overview about the entire standard and how it applies to the automotive industry. This part of the standard 18541 includes a transposition of the contents in parts 1-4 to heavy duty motor vehicles as defined in regulation (EC) 595/2009 Article 2. The parts of the standard 18541-1, -2, -3, -4 focus on the access to automotive repair and maintenance information for passenger cars and light commercial vehicles. Remote Diagnostic Support is a specific requirement for Access to RMI for HD vehicles. It will be addressed separately in a new part of the standard 18541 (currently under definition, see NWIP N421). The standard 18542 is a complementary standard that defines the 'Standardized RMI terminology' and consists of two parts:
- Part 1: General information and use case definition
- Part 2: Standardized process implementation requirements and Registration Authority The standardized RMI terminology is contained in a so-called 'Digital Annex'.