DTC U0300-55: Internal Control Module Software Incompatibility - Not configured: Action

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, 2016 Land Rover Range Rover, 2015 Land Rover Range Rover, and 2014 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

Using JLR approved diagnostic equipment, check and update the car configuration file as necessary, clear the DTCs and retest