Open Beta Status

Known Firmware Issues:

Issue: Some vehicles experience intermittent P1576 issue, due to voltage mismatch between VPIN and MCM'E'.


-Note spoofed pack voltage presented by LiBCM's 4x20 display (the voltage in parenthesis).

-Note IMA pack voltage presented by OBDIIC&C display.

-Subtract OBDIIC&C pack voltage from LiBCM pack voltage.

-Change "MCME_VOLTAGE_OFFSET_ADJUST" parameter (in config.h) to the above result.

Fix: Known hardware issue with MCM's leakage current test routine. The above workaround will resolve this issue on a car-by-car basis.

Issue: The dashboard state-of-charge gauge does not work.

Workaround: LiBCM's SoC is shown on the 4x20 LCD display.

Fix: Need to decipher BATTSCI/METSCI data to find 'magic' byte.

Issue: BCM-specific Pcodes are not implemented. In a fault condition, LiBCM always issues P1648, which safely disables the IMA system.

Workaround: None required.

Fix: Program fault codes

Issue: User-configurable settings aren't runtime configurable.

Workaround: Configure settings in config.h, then re-upload firmware.

Fix: Requires LiDisplay touch screen.

Issue: LiBCM presently only monitors the QTY3 battery temperature sensors. The intake/ambient/exhaust/etc sensors are not presently measured.

Workaround: None required.

Fix: A future firmware update will more intelligently control the fans, based on intake/ambient/exhaust temperatures.

Issue: Firmware doesn't have extensive power-saving features yet, so the battery state of charge will decrease ~1% per 24 hour period.

Workaround: If the battery SoC drops below 10%, LiBCM will turn itself off to prevent further discharge.

Fix: A future firmware update will reduce idle power consumption.

Known Hardware Issues:

Issue: On MIMA-equipped vehicles, the brake lights and three green LEDs on MIMA display remain lit.

Workaround: Disconnect the brake light wire (so the brake light isn't stuck on). Both MIMA & LiBCM will otherwise work as normal.

Fix: Minor hardware change (TBD) required on the MIMA PCB.

Issue: If the OEM grid charger (that ships with LiBCM) is replaced with a higher current charger, the power control circuit could overheat while grid charging in warm weather.

Workaround: Use the grid charger that ships with LiBCM, which isn't affected by this issue, or;

Workaround: Do not use higher current grid charger when the cabin air temperature exceeds 100 degF, or;

Workaround: Connect higher current grid chargers to 240 VAC (instead of 120 VAC), as this halves the current amplitude running through the power control circuit. When powered by 240 VAC mains, higher current grid chargers can be used with cabin temperatures up to 170 degF.

Fix: The RevD LiBCM PCB will include a better heat sink solution. Beta customers that wish to use higher current grid chargers can swap their RevC PCB out for a RevD PCB for a nominal fee. The RevC PCB will then be sold to a customer that doesn't require a high current grid charger.