BMW 740Li drivetrain malfunction message on dashboard, drive moderately on BMW 740Li

Some BMW 740Li owners report experiencing a "Drivetrain Malfunction: Drive moderately" message on their dashboard, indicating potential issues with engine or transmission components. This warning can manifest alongside symptoms such as dashboard warning lights and reduced engine performance, often causing the vehicle to enter a 'limp mode' for self-protection. Common causes of this malfunction include a bad tank of gas, faulty ignition coils, spark plugs, and diverter valves. Owners are advised to remain calm and take prompt action to diagnose the issue to prevent further damage. Regular tune-ups, using quality fuel, and checking transmission fluid are recommended preventative measures. While some simpler repairs can be handled by DIYers, professional assessment is recommended for more complex drivetrain issues. Addressing these problems swiftly and following proper maintenance can help minimize the risk of drivetrain malfunctions in the BMW 740Li.