padamson1 wrote:So in summary I suggest only adding a Heat on/off button.
I didn't state this, but one of my objectives was to not force any change to the physical configuration of the buttons. I'm sure some Nissan designers are tickled by the bow-tie effect they created and would resist "destroying" it. So I consider adding
a Heat on/off button to be problematic.
padamson1 wrote:To me the problem is Climate Control state on startup: When the car first starts leave the climate settings as they were the last time the car was driven, or better yet turn Climate Control OFF when I restart the car until I turn it on.
I definitely like the idea of leaving the settings as they were the last time. I'm not so sure about always starting with it off.
padamson1 wrote:The mode button is a standard UI for just about every car on the road today so I have no problem with it. I think your suggestion ribbon of buttons, while improving flexibility of where the air is coming from and flowing to, is not necessary.
Apparently I haven't driven any "standard" cars. Most cars I've driven have a dial for where the air goes. Our Prius has a climate control screen where we can set nearly anything exactly as we want it. This business of having to punch a button half a dozen times and watch a tiny display until you get to the one you want, and have to go all the way around the choices again if you miss it, all while trying to drive down the road, strikes me as very clumsy and somewhat unsafe. I think Andy may have the best answer, except that it would require a redesign of the physical layout. I hadn't thought, though, about his point that complete flexibility is likely to require a more complex distribution box. Does anyone know if the LEAF uses the sort of rotating single flap he describes?
padamson1 wrote:A Heat off button is definitely a good idea, not sure why high vs low heat have much of a benefit other than adding more buttons.
It may not have much benefit. I only thought of it when I realized that (a) the most reasonable way to free up a button seemed to be to move the Inside/Outside air function, and (b) that freed up two buttons. But many resistive heaters do have high and low settings because it is easy to wire them that way, and I thought a low setting might be more efficient than cycling on and off. Besides, it gives the driver an explicit way to limit the power draw. I did also think of using one of those two buttons for heat, and the other for Outside air on/off, but I couldn't decide which one to put on top, and it seemed like an illogical pair of functions to put on what was obviously a pair of buttons.
planet4ever wrote:3. Clicking AUTO off will cause all buttons to behave independently in a true manual mode, though they will initially be in whatever state they were in automatic mode. The one interaction is that if only one of the A/C or heat buttons is on, the temperature setting will control cycling of the A/C or heater. If both A/C and a heat button are on, or if neither is, the temperature setting will be ignored.
Huh? Why so complicated? Heat uses the heater, A/C uses the dehumidifier.
You've got me there. Actually, I think it sounds more complicated than it is in practice, but providing high and low heat does make it complicated to explain.
padamson1 wrote:If I turn the heat off, then the temp setting goes to the current cabin temp, if I turn A/C off same thing.
Umm .. that's not what happens now. The setting is remembered and reused later. I like that.