Mercedes-Benz E63 AMG crank no start issue with codes P2505 and P0560 on Mercedes-Benz E63 AMG

Some Mercedes-Benz E63 AMG owners report experiencing crank no start issues accompanied by diagnostic trouble codes P2505 and P0560. These problems may stem from a faulty ECM/PCM power input signal, which could be caused by a defective starter motor, starter relay, or a malfunctioning key fob or ignition switch. Additionally, a blown fuse may contribute to the P2505 code. Owners also note that the P0560 code indicates a system voltage malfunction, potentially linked to a defective fuel pump, clogged fuel filter, or issues with the alternator or battery. Furthermore, sensor or switch failures, such as those involving the crankshaft position sensor, ignition coils, and brake light switch, can also prevent the vehicle from starting. It is recommended that owners experiencing these issues seek a thorough diagnostic check from a qualified mechanic to accurately identify and resolve the underlying problems.