MERCEDES-BENZ · 2026-09-29
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…