Quality manual in IATF 16949

Answer:

When it comes to IATF 16949 requirements regarding the manual, it requires at minimum:
a) the scope of the QMS including justification for any exclusion
b) documented processes established for the QMS or reference to them;
c) the organization's processes and their sequence and interactions (inputs and output, including type and extent of control of any outsourced processes;
d) a document (i.e. matrix) indicating where within the organization's QMS the customer specified requirements are addressed.

Previous version of the standard, ISO/TS 16949:2009 required the same as bullets a), b) and c), so if your manual meets all requirements of the new version, you do not have to make changes to it except aligning clauses of the standard. In other case, you need to make an update of your manual to meet all above mentioned requirements.