DTC U3000-04: Control Module - System internal failures: Action

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

Refer to the electrical circuit diagrams and check the suspension control module power and ground circuits for open circuit, high resistance. Repair the circuit as necessary. Using the Jaguar Land Rover Approved Diagnostic Equipment, clear the DTCs and retest
If the fault persists, disconnect battery and wait for at least 1 minute before reconnecting. Clear the DTCs and retest
If the fault persists, contact dealer technical support