What must you do if the oil pressure warning light fails to switch off after starting the engine?

If the oil pressure warning light stays on after starting the engine, it is a sign of a potentially serious problem with oil pressure. According to German traffic regulations, you must stop the engine immediately to prevent engine damage, and check the engine oil level. Continuing to drive with the warning light on could lead to severe engine failure. Therefore, both shutting down the engine and checking the oil level are the correct actions. In future situations like this, always react quickly to warning lights to ensure safety and avoid costly repairs.