550e xDrive Sedan

5 service bulletins filed with NHTSA for this model year

• Mar 5, 2026ELECTRICAL SYSTEMB610326

  Several complaints are possible: Vehicle does not start Gear cannot be engaged Various Check Control Messages Malfunction indicator lamp (MIL) on Several Check Control messages are possible: “It is possible to continue driving. High-voltage system.” “You can continue driving. Drivetrain.” “Restart not possible. Drivetrain fault.” “Call Roadside Assistance. Drivetrain failure.” “Information: Total error of vehicle.” The following fault memory entries are stored in the CCU: D796D9 - Message (- 0x9

• Mar 4, 2026ELECTRICAL SYSTEMB612325

  The malfunction indicator lamp (MIL) is triggered and 0318E2 AC charging, charging electronics 1,component protection: Overload current on AC side fault may be stored during AC charging Level 1(120 VAC). Note: Despite the fault memory entry (and the malfunction indicator lamp), the AC charging process willcontinue operating as designed and there is no related drivability complaint. Affected PHEV (plug-in hybrid electric vehicle) vehicles with CCU-03 (7.4 kW combined charging unit).

• Mar 4, 2026ELECTRICAL SYSTEMB611925

  The malfunction indicator lamp (MIL) is triggered by the erroneous fault code 031BFC- AC charging,charging electronics 2, internal fault: No internal capacitor discharge stored in the CCU. However, AC charging is operating as designed without a charging concern or issue. Affected PHEV vehicles have the CCU-03 (7.4 kW / 11 kW) with I-levels from …24-07-500 to …25-11-5xx.

• Mar 3, 2026ELECTRICAL SYSTEMB612225

  Malfunction indicator lamp (MIL) is triggered by the erroneous fault code(s) BA0023 - Control unit: internalfault (software group fault) In addition, the BA0008 - CCU, internal coolant temperature sensor:Signal implausible faults may be stored in the CCU memory. However, AC charging is still operating as designed, without any related drivability complaints. Affected PHEV vehicles have the CCU-03 (7.4 kW / 11 kW) with I-levels from 24-07-500 to 25-11-5xx.

• Oct 21, 2025ELECTRICAL SYSTEMB612025

  RSU availability. It is possible the State of Health (SoH) of the high-voltage (HV) battery is displayed incorrectly to the customer. The value is continuously displayed as 100% regardless of the actual ageing of the HV battery.

Source: NHTSA manufacturer communications (technical service bulletins).