The AC button is lit when heater is on
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2022 EQS 580
The AC button is lit when heater is on
I have not used heat since i got my 580 eqs in spring time.. so my question is if I use Auto mode and set the temp to 75F the AC button is lit on.. do i leave it on or turn the AC off.. I try to use the heat this morning and it was barely heating the inside and did not have too much time to play with as it was a short trip... Just wanted to know what you guys do to have the heat on properly. Thanks.
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2019 C63CS
Yes, the AC turns on automatically as far as I remember when using Auto. That's how it's supposed to work. It's an automatic climate control. You set your desired temperature, turn on the AC and set it to Auto. It'll do the rest. It'll cool or heat as necessary to maintain the set temperature. The AC compressor will automatically disengage if not needed. Keep in mind, AC is not just about cooling. It's about conditioning the air, which includes removing humidity. You leave it on even in the winter or when it rains. Keeps your windows from fogging up. Too many people constantly fiddle with the HVAC in these modern cars. They are meant to be used like your thermostat in your house. Leave it alone once you set the desired temperature.
Now having said that, in an EV this means it sucks energy from the battery. One of the many downsides of EVs, but it is what it is. You either have a pleasant and comfortable climate in your interior or you are hypermiling and sweating/freezing your butt off.
Now having said that, in an EV this means it sucks energy from the battery. One of the many downsides of EVs, but it is what it is. You either have a pleasant and comfortable climate in your interior or you are hypermiling and sweating/freezing your butt off.
Last edited by superswiss; Oct 16, 2024 at 04:19 PM.
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2022 EQS 580
Thanks for the reply.. yes it works as described and as designed.. I tried it again and all is good and yes it sucks battery... if set at 75F once turned on it decreased the range by 25-30 miles
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Yep, it does. I usually turn my temperature setting down to 68 in Winter, and keep it at 72 the rest of the year, here in Texas. Amazingly, the AC at 72 on a 100 degree day does not use as much battery as the heater set at 68 on a 50 degree day. Go figure.
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Heat does use a lot of electricity apparently, did I recall correctly or some EQS didn't have a heat pump? That might be a reason too.
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2023 EQE SUV 500 4Matic
The EQE SUV had it from the beginning of production in 2023, however.
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From: Fleriduh
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NOT to start an EV/Dino war...yes, the AC compressor will take battery. If you think (way, WAY) back. When AC was first coming on the scene - we had to turn off the AC to go up hills as it took power from the engine. Heck, we had a car that would over heat with the AC on and then have to turn on the heater to cool the car.
In Heat mode the AC is effectively acting as a dehumidifier.
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223.168 & 213.012 & 906.633 & 214.005
NOT to start an EV/Dino war...yes, the AC compressor will take battery. If you think (way, WAY) back. When AC was first coming on the scene - we had to turn off the AC to go up hills as it took power from the engine. Heck, we had a car that would over heat with the AC on and then have to turn on the heater to cool the car.
In Heat mode the AC is effectively acting as a dehumidifier.
In Heat mode the AC is effectively acting as a dehumidifier.
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Remember the little vent doors we used to open on the VW beetles to get heat......then if you changed speed, you had to adjust it all over again. Ah.....the memories!
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Yes, of course HVAC uses energy in an ICE, too, but the point is that it's largely inconsequential. The days of ICE with underdimensioned cooling systems or big block engines that made ridiculously little power for their displacement are long gone. The impact of HVAC on EV range is not a design problem that is yet to be solved. A heat pump is about the most efficient way to heat a space, and AC is just a heat pump run in reverse. It's worst in the winter when the cold temperatures already take a big chunk of range out of the battery. Battery technology will hopefully improve so at least cold temperatures won't have as much of an impact anymore, but it looks like the hyped solid state batteries are DOA already. Not living up to the hype as so many things these days.
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Yes, defrosting also automatically turns on the AC because as said it removes moisture from the air, which is what fogs up the windows in the first place, so the defroster becomes much more effective with AC turned on.
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Remote start and heated steering wheels -- it's all beginning to make sense !!!
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Not only that. But before automatic climate control we had to constantly fiddle with the hot/cold air mixture to stay comfortable. We probably all yanked it up on hot until everybody started to sweat in the car, then turn it back down, then up again. Basically there was never a correct setting. I don't miss those days.
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
My parents would warm the car with the glowing tips of their cigarettes...windows rolled up. Then we had to make sure the floor vents were closed...and rear defrosters, not even a dream......
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ah the rear facing back seat of a station wagon.... going over bumps and turns and up and down...parents smoking like it was as healthy as eating fruit.
Makes me wanna puke again just thinking about it.
Gotta love a classic from the 60's and 70;s.
Seat belt we don't need no stinking seatbelt. moms arm bar will stop us from smashing into windshield as we sat in the front at 5 years old
Makes me wanna puke again just thinking about it.
Gotta love a classic from the 60's and 70;s.
Seat belt we don't need no stinking seatbelt. moms arm bar will stop us from smashing into windshield as we sat in the front at 5 years old
MBWorld God!
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ah the rear facing back seat of a station wagon.... going over bumps and turns and up and down...parents smoking like it was as healthy as eating fruit.
Makes me wanna puke again just thinking about it.
Gotta love a classic from the 60's and 70;s.
Seat belt we don't need no stinking seatbelt. moms arm bar will stop us from smashing into windshield as we sat in the front at 5 years old
Makes me wanna puke again just thinking about it.
Gotta love a classic from the 60's and 70;s.
Seat belt we don't need no stinking seatbelt. moms arm bar will stop us from smashing into windshield as we sat in the front at 5 years old
Last edited by W205C43PFL; Oct 18, 2024 at 08:00 AM.
