Originally Posted by
amazinmets73
Are bike navigation units susceptible to cold-weather failure or are they hard-wearing?
I cannot tell about full-blown navigation units, but this is certainly an issue within basic bike computers. As a rule, screens of cheap Chinese units fade out in the cold. Better units, in particular Sigmas I cling to, work fine (at least down to -25C). Because of bad experiences any item that needs to work in the cold on a bike goes now first into the freezer before I mount it on the bike.