Power loss at very low soc of HV battery.

Bulletin number

B612016

Component

Electrical system

Summary

POWER LOSS AT VERY LOW SOC OF HV BATTERY. The vehicle may exhibit any of the following at very low State of Charge (SOC) - less than 8%: Power loss while running range extender (REx). Inconsistent performance of the Rex. High voltage system shutdown in vehicles without REx. Excessively high range displayed in instrument cluster. The following fault codes may be stored in the battery management electronics (SME): 21F13D - High-voltage battery, switch contactors: Switch-off after a fault 21F241 - High-voltage battery, cell supervision circuit 1: Undervoltage (at least one cell) 21F242 - High-voltage battery, cell supervision circuit 2: Undervoltage (at least one cell) 21F243 - High-voltage battery, cell supervision circuit 3: Undervoltage (at least one cell) 21F244 - High-voltage battery, cell supervision circuit 4: Undervoltage (at least one cell) 21F245 - High-voltage battery, cell supervision circuit 5: Undervoltage (at least one cell) 21F246 - High-voltage battery, cell supervision circuit 6: Undervoltage (at least one cell) 21F247 - High-voltage battery, cell supervision circuit 7: Undervoltage (at least one cell) 21F248 - High-voltage battery, cell supervision circuit 8: Undervoltage (at least one cell) Ineffective SME software.

Owners of these vehicles have filed 25 complaints in the electrical category.