UNECE WP.29 R156 7.2.2.4: Inform the user after execution of success or failure and of changes

What does 7.2.2.4 require?

After execution the manufacturer demonstrates that the user is able to be informed of (a) the success or failure of the update and (b) the changes implemented and any related updates to the user manual (ISO 24089 7.3.3.1).

Maintained by Gerard BlokdykVerified against the published standard 31 May 2026Control text last updated 21 May 2026

Other controls in Paragraph 7.2: Requirements for the vehicle type – UNECE WP.29 R156

7.2.1.1 7.2.1.1 Protect the authenticity and integrity of software updates on the vehicle
7.2.1.2.1 7.2.1.2.1 Each RXSWIN uniquely identifiable and updated on extension or new approval
7.2.1.2.2 7.2.1.2.2 RXSWIN or software versions readable through a standard interface
7.2.1.2.3 7.2.1.2.3 Protect RXSWINs and software versions on the vehicle against unauthorised modification
7.2.2.1.1 7.2.2.1.1 Restore the previous version or reach a safe state after a failed or interrupted update
7.2.2.1.2 7.2.2.1.2 Execute updates only with enough power to complete or recover
7.2.2.1.3 7.2.2.1.3 Technical means ensure safe execution where an update may affect safety
7.2.2.2 7.2.2.2 Inform the user before execution: purpose, changes, duration, unavailable functions, instructions

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The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.

MCP endpoint All UNECE WP.29 R156 controls