LR's seem to need a reboot from time-to-time (about every 6 months in my case). This is simply pulling one battery terminal, counting to 10, and then reconnecting and of course resetting the clock.
Quite interesting and the first time I've read about this related to a car.
In theory it makes sense in that the complexity between HW and SW in the vehicle would seem to benefit from being initialized every once in a while (just like most any electrical device).
Who knows, maybe LR CS will be like this soon?
https://www.youtube.com/watch?v=p85xwZ_OLX0