By 2023 the UMAX line had been running on the same service literature for four model years, and this car is no exception. The book is LIT-19616-A0-37 and the car is stamped YUM2A23_UMAXCG.
That single volume spans 2020 through 2023 and, beyond the RALLY 2+2 EFI, takes in the UMAX 1 EFI, UMAX 1 RALLY EFI, UMAX 2 EFI, UMAX 2 POWERTECH AC, UMAX 2 RALLY AC, UMAX 2 RALLY EFI, UMAX BISTRO EFI and UMAX RALLY 2+2 AC. In practice that means the chapters are organised by system, with notes flagging which variant a given step belongs to.
Everything a shop needs for scheduled maintenance and for larger repairs is here: disassembly order, clearances and torque specs, electrical diagrams and fault-finding tables. Confirm the YUM2A23_UMAXCG code on your car against the fitment list and you will know the procedures match the machine in front of you.
