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  1. Post here if you have an active FDRS account and are willing to look up info for others

    Hi everyone, I’m looking for some help regarding my 2021 Mach-E (Job 1). My current SOH is reporting 91% and I’m experiencing some significant "voltage sag" and erratic SOC/DTE drops, especially in colder weather. I suspect my BECM and GWM modules might be outdated, as I’m still seeing issues...

  2. Inconsistent SOH vs. Battery Capacity - 90.5% SOH "Stuck" at 250Ah?

    Bem, analisando seus dados, fica claro que o valor de soh nĂŁo corresponde a BATT TO EMPTY. Por curiosidade, qual a capacidade em Ah que seu scanner automotivo indica?

  3. Inconsistent SOH vs. Battery Capacity - 90.5% SOH "Stuck" at 250Ah?

    I totally hear you on the top buffer! Most EVs do keep that safety margin. However, if 96% HVB SOC is indeed the 'hard ceiling' (100% usable), then the math for 90.5% SOH still hits a snag. If the BMS considers 96% of the raw capacity as the 'new 100%', but I still have 82.3 kWh at that point...

  4. Inconsistent SOH vs. Battery Capacity - 90.5% SOH "Stuck" at 250Ah?

    I see where you're coming from with that calculation, and it does look like it fits at first glance! However, there's a small detail in the math that's still bothering me: The 82.3 kWh I'm seeing is what I have available at 96% Real SOC (HVB SOC). If my SOH were truly 90.5%, I should only have...

  5. Inconsistent SOH vs. Battery Capacity - 90.5% SOH "Stuck" at 250Ah?

    Hi everyone, I’m a proud Mach-E ER 2021 owner, but I’m currently scratching my head over some data inconsistencies regarding my battery health. I’m hoping someone here has seen this before and might have some insight. According to my Car Scanner and FORScan data (attached images), my battery...

  6. Huge discrepancy between FORScan SoC (65%) and Dashboard SoC (47%) - 2021 Mach-E ER RWD

    I’m just a worried owner trying to make sense of my car's data using FORScan and technical specs I found online. I might have mixed up some numbers while trying to understand the ER pack voltage, but the main point I’m struggling with is the 18% gap between BATT_SOC_DEM and my dashboard. Whether...

  7. Huge discrepancy between FORScan SoC (65%) and Dashboard SoC (47%) - 2021 Mach-E ER RWD

    Actually, the Extended Range (ER) pack uses a different configuration than the Standard Range. While the SR pack sits around 350V-390V, the ER pack has a maximum nominal voltage that easily exceeds 400V when charged, with a top-end voltage near 450V-460V. My reading of 414V at 65% SoC is...

  8. Huge discrepancy between FORScan SoC (65%) and Dashboard SoC (47%) - 2021 Mach-E ER RWD

    That’s a common misconception, but in the Mach-E’s BECM module, BATT_SOC_DEM specifically tracks the High Voltage battery's charge state as requested by the control strategy, not the 12V system. You can verify this by looking at the concurrent HVBAT_MA_PV reading, which shows 414V in the same...

  9. Huge discrepancy between FORScan SoC (65%) and Dashboard SoC (47%) - 2021 Mach-E ER RWD

  10. Huge discrepancy between FORScan SoC (65%) and Dashboard SoC (47%) - 2021 Mach-E ER RWD

    Hi everyone, I’m seeking some technical insight regarding my 2021 Mustang Mach-E RWD Extended Range (ER). I’ve noticed a significant loss in usable range, and after plugging in FORScan, I found some worrying discrepancies that I can't quite explain. Here are the current readings from my...




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