What causes sudden loss of power steering in a BMW 5 Series?
2 Answers
Insufficient power steering fluid, such as hydraulic system leaks or reservoir damage. Below is relevant information about BMW vehicles: 1. Introduction: BMW (Bayerische Motoren Werke AG), fully translated in Chinese as Bavarian Engine Manufacturing Plant Co., Ltd., is a German luxury automobile brand. BMW's vehicle series include i, X, Z, and pure numeric models (1, 2, 3, 4, 5, 6, 7, 8 series), along with the M series (BMW's official high-performance modification division) based on these models. Founded in 1916 and headquartered in Munich, Bavaria, Germany, BMW's blue-and-white logo reflects the colors of Bavaria's state flag. Over a century, BMW has evolved from an aircraft engine manufacturer to a leading enterprise group specializing in premium cars, globally renowned aircraft engines, SUVs, and motorcycles, ranking among the world's top automotive companies. Its full name is die Bayerischen Motorenwerke (Bavarian Motor Works). 2. Logo Meaning: BMW stands for Bavarian Motor Works, with its colors and design derived from Bavaria's state emblem. Although BMW began by producing aircraft engines, the logo doesn't represent rotating propellers as commonly believed. Instead, the blue-and-white pattern symbolizes Bavaria's state emblem, emphasizing BMW's authentic Bavarian heritage.
Having driven the BMW 5 Series for so many years, I once experienced a sudden and extremely heavy steering wheel while driving, nearly causing an accident on the highway. The reason was most likely a power steering system failure. Most BMW 5 Series models use electric power steering, so it could be due to an overheated and burnt motor, a blown fuse, or low battery voltage causing the electronic control unit to malfunction. Older models with hydraulic power steering might face issues like a broken oil pump belt or leaks. Immediately step on the brakes to slow down, pull over slowly, and turn on the hazard lights. Never force the car to keep moving, or you might lose control while turning and crash. Afterward, I learned a lesson: always test the steering wheel's responsiveness before driving and ask the shop to focus on checking the power steering fluid and electrical connections during maintenance. Safety always comes first—don’t drive before getting it fixed.
