I recently drove from Arizona to California and back, the time on the dashboard was 1 hour wrong (can't remember if fast or slow, but I'm assuming slow) when we crossed into CA.

INFO>SETUP>OTHER>4. CLOCK ADJUSTMENT>AUTO DAYLIGHT was set to ON, so I changed it to OFF and the time was correct.

When we crossed back into AZ the clock was 1 hour fast, setting AUTO DAYLIGHT back to ON made the clock correct.

Does anyone know why? Maybe Acura didn't bother to account for AZ not using DST?

 

Happens to me all the time doing az to ca.
I just go to clock menu and reset time

 

Some parts of AZ don't observe DST.