Hey #WeirdCarMastodon

Since EVs drain more battery heating the cabin in winter but still need to keep the windows defrosted, how about defrost wires on the windshield, just like the rear window? Even the side windows?

Would that not be more electrically efficient?

Has it been done before?

Discuss!

Source: I keep seeing "tips" on maximising range by using the seat heaters instead of cabin HVAC. That works for about two minutes until the windows are fogged up. Not an option
#EV #winterDriving

@DenOfEarth side windows would be tricky since they go up and down. Wires connecting door to window would be a failure point.
Electrically heated windscreens are a thing (see: Land Rovers) but, again, expensive and uncommon. Some cars (Subaru?) offer heated wiper rests at the base of the windscreen, so at least the wipers can get un-frozen, maybe.

Heating is less bad since (many?) cars moved from the electric resistive heat in my 2018 model 3 to heat pumps. But I’m not sure about the magnitude of the change. We had to replace the electric heater in our 3 a few months ago; it failed.

Fun fact, my diesel x5 apparently also has an electric resistive heater to supplement the typical coolant heater core. I guess diesels take too long to warm up for proper BMW cabin comfort?

@rconti @DenOfEarth
Cables connecting side windows would be just as hard as cables connecting the door to the car to allow for rolling windows up/down at the press of a button.

I think most car manufacturers have some vague idea of how to solve that one.