Defining standard requirements in practical use for Rework and Repair

a) IATF 16949: 2016 standard requires the following conditions for rework subject.

8.7.1.4 Control of reworked product

The organization shall utilize risk analysis (such as FMEA) methodology to assess risks in the rework process prior to a decision to rework the product. If required by the customer, the organization shall obtain approval from the customer prior to commencing the rework of the product.

The organization shall have a documented process for rework confirmation in accordance with the control plan or other relevant documented information to verify compliance with original specifications.

Instructions for disassembly or rework, including re-inspection and traceability requirements, shall be accessible to and utilized by the appropriate personnel.
The organization shall retain documented information on the disposition of reworked product including quantity, disposition, disposition date, and applicable traceability information

PS: However, changes are coming to the IATF 16949: 2016 standard over time. These are published on the IATF website as "SI". The SI-9 change came in October 2019. In its standard original state, it was asking for customer approval before starting the "rework" process. With this change, customer approval for rework was removed, but customer approval was required for the repair process.

b) IATF 16949: 2016 standard requires the following conditions for repair subject

8.7.1.5 Control of repaired product

The organization shall utilize risk analysis (such as FMEA) methodology to assess risks in the repair process prior to a decision to repair the product. The organization shall obtain approval from the customer before commencing the repair of the product.

The organization shall have a documented process for repair confirmation in accordance with the control plan or other relevant documented information.
Instructions for disassembly or repair, including re-inspection and traceability requirements, shall be accessible to and utilized by the appropriate personnel.

The organization shall obtain a documented customer authorization for a concession for the product to be repaired.

The organization shall retain documented information on the disposition of repaired products including quantity, disposition, disposition date, and applicable traceability information.

For more information please see:

• What are the five core tools of IATF 16949 https://advisera.com/16949academy/blog/2017/08/23/what-are-the-five-core-tools-of-iatf-16949/