Possible Causes

WARNING: This page is about a different car, the 2015 Land Rover LR2, 2014 Land Rover LR2, and 2013 Land Rover LR2. However, it is still accessible from the selected car via links, so may be relevant.

Key lock switch signal invalid, stuck/jammed
Switch held for longer than 20 seconds
Key lock switch circuit short to ground (where connected)
Key lock switch failure
Central junction box fault