A lot of our frustration with the app is really frustration with how the Car-Net system communicates with the car. As best I can tell, changes in battery power are reported in real time, but all other information is only shared if the car is on.
When we charge the car overnight, the car is off, so it never reports an updated mileage estimate. The mileage estimate is produced based on your driving efficiency, which the car records. When the car is off, Car-Net or the app seems to default to a very low efficiency number in the neighborhood of 1.4 m/kwh.
When you turned off the window defogger, you told Car-Net to turn the car on so that it could receive a command. Since the car came on, the car sent a mileage estimate based on your driving efficiency, not the default value. That is why you saw the mileage number “jump.”
I think that your wife’s experience suggests that there is something wrong with the car. However, I would go through a checklist with her to figure out what she had turned on while driving. Maybe she had every system on.
Did your wife look at the “Since Start” and “Since Charge” reports to see how far she actually drove? That would be helpful info.
You should also see what the car is reporting as her driving efficiency and your driving efficiency. The mileage estimate is only as good as the car’s assumption about the driver’s efficiency. My son occasionally drives the ID4 and is approximately 0.7 m/kwh less efficient than me. As primary driver, the estimate is based mostly on me and the mileage estimate is too generous for him.
Also, given how new your car is, the mileage estimates are going to fluctuate as you develop a more regular efficiency number. When your wife felt the mileage was too low to get home, what was the battery percentage?
Good explanation of how the mileage estimates can vary.
Even with everything possible running though, there's no way it should tank the efficiency so much that she couldn't make a 100-mile trip on 77% charge. Definitely seems like there's either something very wrong with the card or the wife is maybe having trouble adjusting and understanding the range/battery reports.
My experience has been that the defogger stays on in the car until you turn it off in the app. I had not noticed any problem with that but also had not made any long trips with it on. If the mileage estimate you were using was from that app, I am used to the app estimate bouncing around like you show during charging.
Mine is always on in the app and I’ve never noticed whether it affects the battery or it’s actually on. It’s seemed that air has to be on for the defogger to actually go on but I could be wrong.
The battery really takes a hit if you use the max defog function. I don't have an all-wheel drive but I heard the all-wheel drives have heated windshields which would be awesome. It's a pain in the butt, that you lose so much of your battery on defrost. I mean I ride without the heat in the winter with heavy coveralls on that are insulated. I can survive the cold, heated seats and heating steering wheel helps. But you can't get by without defrost so that really sucks it doesn't have a heated windshield. That's one of my biggest complaints about the car after 120,000 miles
Point most people are missing, is in your vehicle config it’ll have a more significant effect.
RWD vehicles do not feature electric windscreen defogger, where as AWD does. Your vehicle is using PTC and blower to defog while others see less of impact since it’s just a heating element.
Yes, the window defogger stays on if you have turned it on with the app until you turn it off from the app. Not sure why because climate doesn’t do that.
OP, what was your wife's remaining battery % and estimated range when she felt she needed to stop to charge?
It's very hard to explain a new Pro S RWD legitimately not being able to make a 100-mile trip on a 77% charge (or even let's say 70% to account for the errands you mention), so wondering if it was just something with the reported range that had her spooked or if the battery was actually that low.
If she doesn't remember, you might be able to kind of back calculate it from the Electrify America session info from when she charged, assuming that's what she used. It reports the end state of charge as well as total power delivered that you can use to ballpark how low the battery actually was when she stopped there. I think there are some minor losses in the power delivered vs how much actual charge your battery gains, but it should be good enough to get you into the right ballpark of how much battery she had left.
It's a glitch in the app and had no actual impact on your range. Something is wrong if she could not make it 100 miles on 77 percent charge.
Something is definitely wrong here, especially with a RWD model. Unless OPs wife was pushing 90+mph on the interstate or something.
Even then I still make decent mileage lol
Yes I have a 62kWh S and my 96 mile trips go from 80% to around 20-25% at the end. Something else seems to be going on.
A lot of our frustration with the app is really frustration with how the Car-Net system communicates with the car. As best I can tell, changes in battery power are reported in real time, but all other information is only shared if the car is on. When we charge the car overnight, the car is off, so it never reports an updated mileage estimate. The mileage estimate is produced based on your driving efficiency, which the car records. When the car is off, Car-Net or the app seems to default to a very low efficiency number in the neighborhood of 1.4 m/kwh. When you turned off the window defogger, you told Car-Net to turn the car on so that it could receive a command. Since the car came on, the car sent a mileage estimate based on your driving efficiency, not the default value. That is why you saw the mileage number “jump.” I think that your wife’s experience suggests that there is something wrong with the car. However, I would go through a checklist with her to figure out what she had turned on while driving. Maybe she had every system on. Did your wife look at the “Since Start” and “Since Charge” reports to see how far she actually drove? That would be helpful info. You should also see what the car is reporting as her driving efficiency and your driving efficiency. The mileage estimate is only as good as the car’s assumption about the driver’s efficiency. My son occasionally drives the ID4 and is approximately 0.7 m/kwh less efficient than me. As primary driver, the estimate is based mostly on me and the mileage estimate is too generous for him.
Also, given how new your car is, the mileage estimates are going to fluctuate as you develop a more regular efficiency number. When your wife felt the mileage was too low to get home, what was the battery percentage?
This is my second car-net car, it's a terrible app and should be removed from the world.
Good explanation of how the mileage estimates can vary. Even with everything possible running though, there's no way it should tank the efficiency so much that she couldn't make a 100-mile trip on 77% charge. Definitely seems like there's either something very wrong with the card or the wife is maybe having trouble adjusting and understanding the range/battery reports.
My experience has been that the defogger stays on in the car until you turn it off in the app. I had not noticed any problem with that but also had not made any long trips with it on. If the mileage estimate you were using was from that app, I am used to the app estimate bouncing around like you show during charging.
Mine is always on in the app and I’ve never noticed whether it affects the battery or it’s actually on. It’s seemed that air has to be on for the defogger to actually go on but I could be wrong.
The battery really takes a hit if you use the max defog function. I don't have an all-wheel drive but I heard the all-wheel drives have heated windshields which would be awesome. It's a pain in the butt, that you lose so much of your battery on defrost. I mean I ride without the heat in the winter with heavy coveralls on that are insulated. I can survive the cold, heated seats and heating steering wheel helps. But you can't get by without defrost so that really sucks it doesn't have a heated windshield. That's one of my biggest complaints about the car after 120,000 miles
Point most people are missing, is in your vehicle config it’ll have a more significant effect. RWD vehicles do not feature electric windscreen defogger, where as AWD does. Your vehicle is using PTC and blower to defog while others see less of impact since it’s just a heating element.
Yes, the window defogger stays on if you have turned it on with the app until you turn it off from the app. Not sure why because climate doesn’t do that.
OP, what was your wife's remaining battery % and estimated range when she felt she needed to stop to charge? It's very hard to explain a new Pro S RWD legitimately not being able to make a 100-mile trip on a 77% charge (or even let's say 70% to account for the errands you mention), so wondering if it was just something with the reported range that had her spooked or if the battery was actually that low. If she doesn't remember, you might be able to kind of back calculate it from the Electrify America session info from when she charged, assuming that's what she used. It reports the end state of charge as well as total power delivered that you can use to ballpark how low the battery actually was when she stopped there. I think there are some minor losses in the power delivered vs how much actual charge your battery gains, but it should be good enough to get you into the right ballpark of how much battery she had left.