BMW 535i overheating warning light issue requiring water pump replacement on BMW 535i

Some BMW 535i owners report experiencing overheating warning light issues that may indicate problems with the cooling system, such as a failing water pump. Symptoms can include the engine entering "limp mode" and overheating even without coolant loss. When water pump replacement is necessary, owners emphasize the importance of installing the correct pump and recommend replacing the thermostat simultaneously, as both components often fail together. Additionally, thorough diagnostic steps are crucial, including checking for coolant leaks, monitoring coolant levels, and ensuring proper fan operation, as fan malfunctions can exacerbate overheating issues. If the warning light persists after replacement, many owners advise seeking professional inspection to conduct diagnostic tests and identify specific problems with the water pump or thermostat.