Sorry if this is a dumb question, but i have both sat in the car and tried various options, and looked at the paper manual....I'm stuck an hour behind in British Winter Time. Our Honda automatically switches back and forth between winter and summer time. I can change the date, but not the hour! I don't remember there being an issue with the wrong time last year.
On our 2016 Prius v Three I go to Apps > Setup > General > System Time to change both the time zone and whether or not it is Daylight Saving Time for the built-in NAV. Otherwise I simply push the H and/or M buttons to change the car clock. Is it something similar on your Four? Clock...page 97 of this US manual... http://www.toyota.com/t3Portal/document/om-s/OM47B39U/pdf/OM47B39U.pdf System time...page 57 of this US manual... http://www.toyota.com/t3Portal/document/omnav-s/OM47A41U/pdf/OM47A41U.pdf ...although it might be different in the UK version...
Clock...page 97 of this US manual... http://www.toyota.com/t3Portal/document/om-s/OM47B39U/pdf/OM47B39U.pdf System time...page 57 of this US manual... http://www.toyota.com/t3Portal/document/omnav-s/OM47A41U/pdf/OM47A41U.pdf ...although it might be different in the UK version...
Yeah, i was being dumb! The settings had been left showing just the bottom 2 options....all i had to do was scroll up, thanks for the help!