DTC U0300-46: Internal Control Module Software Incompatibility - Calibration/parameter memory failure: Action

WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Check vehicle primary battery service history to confirm if battery was removed and re-fitted

Re-configure the gateway module using the manufacturer approved diagnostic system. Clear the DTC and retest
If fault persists, check and install new gateway module