Mercedes-Benz R350 intermittent ignition issue with no solution found on Mercedes-Benz R350

Some Mercedes-Benz R350 owners report experiencing intermittent ignition issues that remain unresolved despite troubleshooting efforts. These problems may arise from a variety of causes, including a failing battery, faulty ignition switch, or loose wiring connections. Additionally, sensor or switch failures, such as those related to the crankshaft position sensor or ignition coils, can contribute to starting difficulties. Weak joints in the Electronic Ignition System (EIS) or a defective Signal Acquisition Module (SAM) may also be factors in these symptoms. In instances where the vehicle cranks but fails to start, some owners find that the fuel pump could be to blame, necessitating a check of the internal plumbing. Moreover, if turning the key activates all dash lights and accessories but the engine does not crank, it suggests an issue beyond the battery. Problems with the starter, including a failed solenoid or starter relay, can further complicate the situation. Conducting a comprehensive diagnostic assessment focusing on these components is essential for effectively addressing the intermittent ignition issues in the Mercedes-Benz R350.