What Causes the Heavy Electronic Power Steering in BMW 5 Series?

[EdwardAnn]

The reasons for heavy car steering wheel can be multifaceted. The causes of a heavy steering wheel include: 1. Oil Leakage: For hydraulic power steering, check if the power steering fluid is insufficient or if there is any leakage. If the fluid is low, it needs to be replenished to the normal range. If the fluid level is adequate, check if the power steering pump belt is too loose. If it is, tighten the belt. Also, check if the fluid is too dirty, which can reduce its flowability. Generally, it should be replaced every 2 years or 60,000 kilometers. 2. Fuse: For electronic power steering, check if the fuse is blown and if there are any open circuits or short circuits to ground in the wiring. 3. Tire Pressure: Check the tire pressure, as underinflation can also cause the steering to become heavy, necessitating inflation.