ISO 20080:2019

Overview

ISO 20080:2019 - "Road vehicles - Information for remote diagnostic support - General requirements, definitions and use cases" defines the general requirements, definitions and use-case scenarios for performing remote diagnostics via an Extended Vehicle (ExVe) architecture. The standard applies to road vehicles with four or more wheels for passenger (Category 1) and goods (Category 2) transport as defined in the UN Special Resolution No.1 (TRANS/WP.29/1045). ISO 20080:2019 focuses on the information and process requirements for remote diagnostic support; it does not define ExVe interfaces, internal ExVe implementations, or prerequisites such as authentication and authorization.

Key Topics

• Scope and actors: Defines key roles such as the remote diagnostician and local diagnostic facilitator, and clarifies vehicle states (stationary, moving, non‑operating, etc.).
• Use-case driven requirements: Specifies capability and scenario requirements to support remote diagnostic processes through a standardized ExVe interface.
• Use cases included: Discovery, ECU identification, read Diagnostic Trouble Codes (DTCs), read readiness codes, read DTC snapshot data, read dynamic diagnostic parameters, read malfunction indicator status, clear DTCs, adjust system settings, activate actuators, and run self-test routines.
• Error handling: General and interface-specific error conditions and handling principles for remote diagnostics.
• Conformance conditions: High-level criteria for compliance with the document.
• Annex A (informative): Example specification for implementing remote diagnostic applications using the ExVe web interface per ISO 20078.

Applications

ISO 20080 is practical for organizations involved in vehicle diagnostics and telematics:

• Vehicle manufacturers (OEMs) - for defining ExVe information offerings and remote diagnostic support policies.
• After‑sales service and independent repairers - to understand standardized remote diagnostic use cases and required information.
• Telematics and fleet operators - to implement remote diagnostic workflows that reduce workshop visits and downtime.
• Diagnostics tool vendors and software integrators - to align diagnostic applications with ExVe use-case requirements.
• Regulators and standardization committees - as a reference for interoperability and safety considerations in remote vehicle diagnostics.

Benefits include reduced workshop time, improved fault triage before repair, and consistent information exchange between stakeholders.

Related Standards

• ISO 20078 - Extended Vehicle (ExVe) - Web Services (implementation guidance referenced in Annex A)
• ISO 20077‑1:2017 - Extended vehicle (ExVe) methodology - General information
• ISO 18541‑1 - Conventional diagnostics information (foundation for remote diagnostics)

Keywords: ISO 20080, remote diagnostic support, ExVe, extended vehicle, DTC, ECU, vehicle diagnostics, telematics, ISO 20078, automotive standard.