Looking for advice on a battery issue.
TL/DR: I believe one or more of the cells/modules in my ‘23 ID.4 are no longer working. Rather suddenly, the Guess-o-meter ticks down the % about 50% faster than before. Car Scanner app reports 100% SoC battery = ~57kWh (77kWh SK On battery).
Quick background: I’m coming up on three years of ownership of Skip, my 2023 ID.4 Pro S AWD. And I love him. Mileage: 26,198. Although I enjoy getting off the line as fast as anyone, I’m overall a very calm, conservative, and gentle driver. (Case in point: my factory Pirelli Scorpion tires have tons of tread and are nowhere near needing replacement after 26k miles.) Except when I’m road tripping, I almost always charge at home on my 32A in-garage EVSE, and unless I’m road tripping I seldom stray below 20% or over 80% SoC.
Pretty suddenly starting a few weeks ago, I noticed the battery depleting more quickly than it should as I’m driving around. I’ve always consistently gotten roughly 4 miles per kWh (so, about 3 miles per percent) in town and about 3mi/kWh on the highway. But now the percentage ticks down about half again as fast — in town, the reading drops by about 1% every two miles or so.
The Car Scanner app connected to my OBD dongle reports that the High Voltage Battery energy content = 57,250 Wh at 100% SoC (this is the 77kWh usable/82kWh gross SK On battery). Screenshots attached.
Looking back, the first symptom of this may have been some weird charging behavior that I attributed to the BMS not working right. Starting about a month ago, when I set my battery to charge to 80% SoC when I needed to leave for work (using the in-car Charge Until Departure Time feature, which has until now always worked flawlessly for me), it was at 100% at departure time. (This incorrect behavior has continued since, including when I charged to 100% last week to test the full capacity and do some driving tests — it reached 100% two hours earlier than I had set it for.)
There have been no error messages of any kind on either of my car’s displays.
So… I’m writing to ask for any guidance, wisdom, or advice the community can offer. Has anyone had a similar issue before? Did it require a full battery replacement? Any questions I should have ready for my dealer (I have an appointment on Thursday AM), or anything you’d recommend I ask them to look at in particular? Thanks, all, in advance.
TL/DR: I believe one or more of the cells/modules in my ‘23 ID.4 are no longer working. Rather suddenly, the Guess-o-meter ticks down the % about 50% faster than before. Car Scanner app reports 100% SoC battery = ~57kWh (77kWh SK On battery).
Quick background: I’m coming up on three years of ownership of Skip, my 2023 ID.4 Pro S AWD. And I love him. Mileage: 26,198. Although I enjoy getting off the line as fast as anyone, I’m overall a very calm, conservative, and gentle driver. (Case in point: my factory Pirelli Scorpion tires have tons of tread and are nowhere near needing replacement after 26k miles.) Except when I’m road tripping, I almost always charge at home on my 32A in-garage EVSE, and unless I’m road tripping I seldom stray below 20% or over 80% SoC.
Pretty suddenly starting a few weeks ago, I noticed the battery depleting more quickly than it should as I’m driving around. I’ve always consistently gotten roughly 4 miles per kWh (so, about 3 miles per percent) in town and about 3mi/kWh on the highway. But now the percentage ticks down about half again as fast — in town, the reading drops by about 1% every two miles or so.
The Car Scanner app connected to my OBD dongle reports that the High Voltage Battery energy content = 57,250 Wh at 100% SoC (this is the 77kWh usable/82kWh gross SK On battery). Screenshots attached.
Looking back, the first symptom of this may have been some weird charging behavior that I attributed to the BMS not working right. Starting about a month ago, when I set my battery to charge to 80% SoC when I needed to leave for work (using the in-car Charge Until Departure Time feature, which has until now always worked flawlessly for me), it was at 100% at departure time. (This incorrect behavior has continued since, including when I charged to 100% last week to test the full capacity and do some driving tests — it reached 100% two hours earlier than I had set it for.)
There have been no error messages of any kind on either of my car’s displays.
So… I’m writing to ask for any guidance, wisdom, or advice the community can offer. Has anyone had a similar issue before? Did it require a full battery replacement? Any questions I should have ready for my dealer (I have an appointment on Thursday AM), or anything you’d recommend I ask them to look at in particular? Thanks, all, in advance.
