When I had the factory head unit & oem hvac controls, when I'd use my remote start, the temp i set the hvac at the night before would be what the temp would be the next morning. If it was hot I'd set the temp like 68° and the next day it'd be 68° when I got in the car. Now it is reset to 71° no matter what I preset it for. It no longer remembers what I set it at the night before. Since it's been cold out, I try to set it at 78° but in the morning it's 71° again. If I set it and I run in a store quickly, I'll come out and it'll be saved sometimes but the longer the head unit is off, the bigger the chance it wont remember what i had it set to. I do have the old canbus that came with my 7862 android head unit. Should I order a replacement canbus decoder thats newer & actually the one for the my dudu7. My steering wheel buttons all work.