Heat doesn't turn on when slow charging?

[raijinmach]

I was sitting in my car while slow charging and had the heat on but it was only cold air coming out. Is this by design?

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[Maquis]

Was the car fully on or just in “Accessory”?

 

[raijinmach]

Was the car fully on or just in “Accessory”?

Just accessory, but the heat worked that way when fast charging

 

[RickMachE]

Start the car...

 

[AliRafiee]

Just accessory, but the heat worked that way when fast charging

All accessories does is blow through your 12v battery

 

[Mach-Lee]

Just accessory, but the heat worked that way when fast charging

Don't use accessory mode, it will drain the 12V battery most of the time. The high voltage heater is also disabled in accessory mode (unless the battery is heating).

So the solution is to just turn the car fully ON and you'll have heat.

 

[raijinmach]

Don't use accessory mode, it will drain the 12V battery most of the time. The high voltage heater is also disabled in accessory mode (unless the battery is heating).

So the solution is to just turn the car fully ON and you'll have heat.

Ok thanks. Strange, I don't understand why EV's need to differentiate between 12V vs. full battery for this. It makes sense for ICE cars to preserve gas, but you're using electricity in both cases for an EV

 

[shelnian]

The 12v battery is 35AH and the high voltage is about a 100000AH battery. Heater is 5000 to 7500 watts and would drain the 12v battery in a matter of minutes.

 

[E90alex]

Ok thanks. Strange, I don't understand why EV's need to differentiate between 12V vs. full battery for this. It makes sense for ICE cars to preserve gas, but you're using electricity in both cases for an EV

Accessory mode is just a holdover from ICE vehicles as Ford EVs share a lot of computer modules with the gas cars.

There’s no point in using it on an EV other than for specific diagnostic procedures.

 

[Maquis]

Ok thanks. Strange, I don't understand why EV's need to differentiate between 12V vs. full battery for this. It makes sense for ICE cars to preserve gas, but you're using electricity in both cases for an EV

I’ve maintained that “Accessory” mode is unnecessary ever since I realized it existed on my car. Surprisingly, somebody on here wanted to debate me on it!

 

[TheRock]

I’ve maintained that “Accessory” mode is unnecessary ever since I realized it existed on my car. Surprisingly, somebody on here wanted to debate me on it!

+1 always forget to turn the car off when leaving and honks at me. Why honk. That's another discussion for another day.

 

[AZBill]

The 12v battery is 35AH and the high voltage is about a 100000AH battery. Heater is 5000 to 7500 watts and would drain the 12v battery in a matter of minutes.

The heater does not run on 12V, it would have to be pulling over 400A. The heater runs off the high voltage battery. Only the fan motor is running on 12V.

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