UN R156 Supplement 1 (00 series) · UNECE Regulation No. 156 (ECE R156) — Uniform provisions concerning the approval of vehicles with regards to software update and software updates management system.

UN R156 — Supplement 1 to the 00 series of amendments

Base text → Supplement 1

Adopted at the WP.29 199th sessionEntry into force not yet known

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What changed: The model declaration of compliance now has a line for the series of amendments number of UN Regulation No. 156.
The model certificate of compliance now refers to the original version of UN Regulation No. 156.
Why: It would be useful to note on the declaration and the certificate of compliance which series of UN Regulation No. 156 they are for.

Q1What changed4 changes

Model declaration of compliance (Appendix 1 to Annex 1)

The model declaration of compliance for the Software Update Management System now has the new line "UN Regulation No. 156 series of amendments number:". The reference to paragraph 7.1 now reads "paragraph 7.1.".

UN Regulation No. 156 series of amendments number:

………………(Manufacturer Name) attests that the necessary processes to comply with the requirements for the Software Update Management System laid down in paragraph 7.1 . of UN Regulation No. 156 are installed and will be maintained.

Model certificate of compliance (Annex 4)

The model certificate now reads "With the original version of UN Regulation No.156". Before, it did not name the original version. The compliance line now reads "Complies with the provisions of the original version of Regulation No. 156". Before, it had the placeholder "Regulation No.[this Regulation]".

With the original version of UN Regulation No.156

Complies with the provisions of the original version of Regulation No.[this Regulation]. 156

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Q2Why it changed

Proposed by: Informal Working Group on Cyber Security and (Over-the-Air) Software Updates
Working party: GRVA, 24th session (January 2026)

Reasons

It would be useful to note on the declaration and the certificate of compliance which series of UN Regulation No. 156 they are for.
Source
“it would be beneficial to note on the declaration of compliance and the certificate of compliance for the software update management system which series of UN Regulation No. 156 it was for”
ECE/TRANS/WP.29/GRVA/2026/7II. Justification
The management system may have to change because of the requirements of the 01 series. It is necessary to know that a valid management system for that series is in place before an approval to that series is issued.
Sources (2)
“the management system may have to change due to the requirements of the 01 Series”
ECE/TRANS/WP.29/GRVA/2026/7II. Justification
“it is necessary to know that there is a valid management system for that series in place to subsequently issue an approval to that series”
ECE/TRANS/WP.29/GRVA/2026/7II. Justification

Document trail

2025-11ProposalECE/TRANS/WP.29/GRVA/2026/7Proposal by the Informal Working Group on Cyber Security and (Over-the-Air) Software Updates
—Working party adoptsECE/TRANS/WP.29/GRVA/24Session report, para. 49
2026-06Sent to WP.29ECE/TRANS/WP.29/2026/169Text that GRVA sent to WP.29 and AC.1
2026-06-24WP.29 adoptsECE/TRANS/WP.29/1192Adopted at the 199th session (session report, para. 103)
PendingIn forceDate not yet known

Q3Who is affected

Vehicle manufacturer

Use the new model declaration of compliance and give the series of amendments number.

Component supplier

No direct action for this role.

Technical service / Approval authority

Use the new model certificate text, which names the original version of the Regulation.
Make sure that the declaration of compliance gives the series of amendments number.

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