Updating the manual to meet IATF 16949 requirements

Answer:

I assume you've meant Quality Manual, because the standard doesn't mention Apex manual and I'm not sure what Apex manual is. As far as the Quality Manual is concerned, IATF 16949, just like ISO TS 16949 requires quality manual and extends requirements regarding this document.

The previous version of the standard only had requirements from ISO 9001:2008, IATF 16949 kept this requirement and added basically two requirements to the ones existing in the previous version of the standard:
1. to include extent and type of controls for outsourced processes in description of sequence and interaction of processes; and
2. document indicating where in the QMS the customer specific requirements have been met.

For more information, see: How to write the IATF 16949 Quality Manual https://advisera.com/16949academy/blog/2017/05/31/how-to-write-the-iatf-16949-quality-manual/