Diesel Particulate Filter (DPF) warning displayed in Multi-Information Display.
Message reads ‘DPF Full See Owner’s manual’

The manual suggests these actions:
Drive vehicle at over 60km/h for 30min or Stop the vehicle in a safe place then perform a Manual regeneration using the dash DPF button, then wait until the message clears.

Owner had attempted a DPF regeneration using the DPF button, but this was not successful.

If the customer continued to drive the vehicle with this display, it would eventually shut down to around idle speed.

Confirmed the Multi-Information Display (MID) message as the customer described.
This message would not clear, even after a full system power down (battery disconnect).

The end result of this extended process, suggested that the additional 5th injector in the LH (Bank2) was at fault - preventing successful regeneration.