HomeLI47.70-P-079912 · MERCEDES-BENZ
MERCEDES-BENZ

LI47.70-P-079912

Manufacturer communications

Publication date
2026-09-29
Received by NHTSA
2026-10-06
NHTSA record numbers
11038189

Manufacturer summary

Original wording in English

Complaint Vehicle will not start after DC charging Warning in the instrument cluster related to High‐voltage on board electrical system The following fault codes related to stuck contactor can be found in the High Voltage Control units : PTCU ‐ N127 (Powertrain control unit)
• P154900 ‐ There is a warning due to overcurrent in the charging system of the high‐voltage electric circuit.
• P154A00 ‐ There is a warning due to a detected crash event at standstill.
• P154B00 ‐ There is a warning due to a stuck contactor. DCB223 ‐ N116/5 (Direct current charge connection unit)
• P0E8929 ‐ The input current of the on‐board DC charging connection unit is too high. There is an invalid signal.
• P2BC500 ‐ The contact ''Positive terminal'' of the contactor in the on‐board DC current charge‐connection unit is jammed closed
• P2BCC00 ‐ The contact ''Negative terminal'' of the contactor in the onboard DC current charge‐connection unit is jammed closed. Instrument cluster warning messages : Cause
• Current ripple due to EVSE (Electric Vehicle Supply Equipment)
• Overcurrent or Overvoltage due to EVSE (Electric Vehicle Supply Equipment)
• DCB contactors did not open immediately due to welding time at the end of DC charging Remedy
• Check for a new software availability for DCCU (N116/5 ‐ Direct Current Charge connection Unit). If a new software is available, update the software first.
• Reset contactor fault through special procedure without password. ( N116/5 >> Special Procedure >> Resetting of contactor fault.) Important Note :
• Do not replace component DCB (N116/5)
• If fault codes are not erasable, please raise a TIPS case and send it to HQ.

NHTSA manufacturer communications ↗

Reported code forms

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
Mercedes-BenzAMG E 53 E 4MATIC+2025
Mercedes-BenzAMG E53E 4MATIC2027
Mercedes-BenzAMG E53E 4MATIC WAGON2027
Mercedes-BenzAMG GLC63 S E2025
Mercedes-BenzAMG GLC63 S E 4MATIC+2026
Mercedes-BenzAMG GLC63 S E 4MATIC+2025
Mercedes-BenzAMG GLC63 S E 4MATIC+ COUPE2026
Mercedes-BenzAMG GLC63 S E 4MATIC+ COUPE2025
Mercedes-BenzAMG S 63 E 4MATIC+2026
Mercedes-BenzAMG S 63 E 4MATIC+2025
Mercedes-BenzAMG S 63 E 4MATIC+2024
Mercedes-BenzE53 E 4MATIC+2025
Mercedes-BenzE53 E 4MATIC+ ALL-TERRAIN2026
Mercedes-BenzGLC 350 E 4MATIC2027
Mercedes-BenzGLC 350 E 4MATIC2026
Mercedes-BenzGLC 350 E 4MATIC2025
Mercedes-BenzGLE 450E 4MATIC2026
Mercedes-BenzGLE 450E 4MATIC2025
Mercedes-BenzGLE 450E 4MATIC2024
Mercedes-BenzS 580 E2023
Mercedes-BenzS 580 E 4MATIC2026
Mercedes-BenzS 580 E 4MATIC2025
Mercedes-BenzS 580 E 4MATIC2024
Mercedes-BenzS 580 E 4MATIC2023

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