It’s very probably the high voltage coolant heater that’s faulty as was mine. It’s been replaced and now works perfectly. Show your dealership the posts in this thread. There’s a copy of a communication from land rover regarding this problem further back on the thread. That may help your dealership repair your car.2nd of December 2021
Hi there, I'm having the exact same problems with my brand new Discovery Hybrid, and there, still, does not seem to be a solution. LandRover in the Netherlands acknowledges the problem, but don't have an answer yet. And my Discovery is now almost every day from time to time falling out of EV modus (and off course with a fully charged battery).
Can I ask if the problems with your car are solved?