ISO 20077-2:2018

Overview - ISO 20077-2:2018 (Extended Vehicle / ExVe design methodology)

ISO 20077-2:2018 defines a methodology for designing the extended vehicle (ExVe). It provides general rules, basic principles and standardized templates that ExVe manufacturers use to evaluate and implement new remote or externally accessible vehicle functionalities. The standard focuses on the design and production phases (including in-production upgrades) and applies regardless of the type of external communication interface used between the ExVe and third parties. It does not prescribe internal vehicle communications, software or hardware implementations, nor the processes for drafting the request/response information.

Key topics and technical requirements

• Rules and Basic Principles: A generic system of mandatory rules (R_xxx) and design principles (BP_xxx) that manufacturers must consider when creating their own detailed design methods.
• Templates for Request and Response: Standardized templates (normative Annexes A and B) specifying the minimum information a requester must provide to ask for a new ExVe functionality and the information the ExVe manufacturer must supply in response.
• Safety and Security Considerations: Explicit treatment of safety-related and security-related rules to mitigate risks introduced by remote access and new communications.
• Life-cycle and Operational Aspects: Principles covering manufacture, customer use, maintenance, recycling and subsequent design upgrades.
• Remote Access and Interfaces: Guidance on designing remote-access capabilities while addressing interactions with external systems and parties.
• Interaction Management: Rules on how new functionalities may interact with existing vehicle functions, priority management and avoidance of unintended interference.
• Validation, Non‑regression and Availability: Principles for validating new ExVe functionality, ensuring non-regression of existing features and maintaining resource availability.
• Scope Limits: Applies only to external interfaces and ExVe design; does not standardize internal ECUs or require specific technical solutions.

Practical applications and users

Who benefits from ISO 20077-2:

• ExVe / Vehicle manufacturers (VMs) drafting corporate ExVe design methods and internal procedures.
• Tier‑1 suppliers and system integrators designing remote services or adding ExVe functionality.
• Service providers and requesters (after‑sales, diagnostic service providers, regulators) preparing formal requests for new ExVe capabilities.
• Regulatory bodies and standards committees aligning requirements for externally accessible vehicle interfaces.

Typical uses:

• Standardizing the information exchange when requesting/approving new remote features.
• Ensuring consistent safety/security checks when adding telematics or remote diagnostics.
• Guiding multi-stage manufacturing and in-production updates to ExVe features.

Related standards

• ISO 20077-1 - Extended vehicle (ExVe) Part 1: General information (referenced normative document).
• ISO 20077 series - other parts addressing the ExVe ecosystem and terminology.