Notes on auto-pilot system - AH82.61-P-0001-01P
WARNING: This page does not describe the selected car, but rather 203 other vehicles, including the 2020 Mercedes-Benz SLC300, 2020 Mercedes-Benz SL550, 2020 Mercedes-Benz SL450, 2020 Mercedes-Benz S65 AMG, and 2020 Mercedes-Benz GLA250. However, it is still accessible from the selected car via links, so may be relevant.
MODEL 203 APS 30 navigation system
On the Audio 30 APS navigation system make sure that the device bears the part number A 203 820.... Devices with the part number A 208 820.... and A168 820.... are not capable of receiving the CAN messages in model 203.