Why Is Your BMW Steering Hard to Turn? Symptoms of Power Steering Assist Faults
When a steering wheel suddenly becomes heavy then a pleasant drive can turn into an uncomfortable ride. Whenever you start feeling that the steering wheel of your BMW becomes stiff to turn then there could be something wrong with the steering assist system. The new BMW models come with either hydraulic power steering assist or Electronic Power Steering Assist (EPS).
What exactly is Power Steering Assist?
Most of the latest BMW models use electronic power steering (EPS). However, earlier BMW models used hydraulic power steering.
Hydraulic Power Steering (HPS) - The system uses fluid pressure, a pump and engineering to make it easy for you to turn the wheels.
Electronic Power Steering (EPS) - This power steering system uses an electric motor instead of hydraulic fluid. Depending on the speed the amount of assistance may vary.
Indicators That Your BMW's Steering Assist Is Not Operating Properly
Difficulty Turning the Steering Wheel
If turning the wheel requires far more effort than you're accustomed to whether sitting idle, moving slowly in traffic or making a gentle turn then it indicates your steering assist is malfunctioning.
Warnings on Your Dashboard
Newer BMWs are packed full of technology. When the steering assist fails then you will likely get a warning message. Some common indicators include "Steering Assist Malfunction," "Steering Assist System Problem," and even "Power Steering Failure." This is your car telling you that something is going wrong.
Unusual Noises from Your Steering Wheel
Strange noises when turning your steering wheel are another sign that something is amiss. In older vehicles, unusual whining, squealing or other odd noises could indicate a low power steering fluid level, a worn belt or a failing pump.
Inconsistency in Steering Response
Suppose you have ever noticed that at times the steering response seems fine. In contrast, at other times it's unusually hard or makes sudden jerking movements. Inconsistency in this response usually indicates a problem with the steering system.
Shaking, Jerking or Vibrating Steering Wheel
When your steering wheel vibrates, shakes or makes jolting movements then it could mean there's an issue with either the steering column/steering shaft or the electronic parts that manage the steering assist.
What Are the Potential Causes of Hard Steering in Your BMW?
Low or Leaking Power Steering Fluid
In BMW models with hydraulically powered steering low fluid levels due to leakage result in inadequate pressure and leaving the steering system unable to assist you effectively.
Defective Electric Power Steering (EPS) Motor
If your BMW has an electric power steering system then any issues with the EPS motor would result in a loss of steering assistance. The problem might occur due to motor wear and tear as well as exposure to varying temperatures and moisture.
Defective Steering Rack or Linkage
This is the component that turns your wheels when you turn the steering wheel. If the steering rack fails, gets clogged or becomes stuck in some way then you will find it harder to turn your steering wheel.
Hydraulic power steering systems require a drive belt that operates the power steering pump. If the drive belt breaks or slips off then your steering wheel will be very hard to turn.
Defective Electronics or Sensors
BMW power steering relies on a network of sensors and ECUs to properly control the assist feature. Defective electrical components, such as wiring or sensors will cause immediate loss of power steering assist.
Fixing Your BMW's Power Steering
Physical Inspection - Inspect the underside of your BMW for any indication of power steering fluid leaks. If your car uses hydraulic technology then inspect the drive belt for wear as well. Dashboard warning indicators must not be overlooked.
Use diagnostic computers to diagnose error codes within your vehicle's systems.
Check different parts and components to find the root cause of the problem.
Diagnose precisely whether the problem lies with the fluid level, belt, motor, sensor or any other part.
Possible Fixes for Your BMW's Steering Problem
Replacing the Power Steering Fluid - If the problem is caused by insufficient or dirty fluid then replenishing with the right type of power steering fluid or replacing the fluid in your car will do the job.
Replacing the Problem Part - Depending on the diagnosis, different parts such as drive belts, power steering pumps, EPS motors and steering racks may need to be replaced.
Fixing Sensors or Wires - If wires or sensors are damaged or malfunctioning then they may need to be repaired or replaced.
A BMW vehicle with a rigid or unstable steering system clearly indicates a serious problem within its exceptional engineering. You can protect yourself from many issues by being mindful of how your steering is working and addressing any warnings your vehicle issues.
We have qualified and certified BMW mechanics who can conduct diagnostic testing on your BMW and repair any issues using BMW-approved equipment and genuine BMW parts. This will help us bring back your BMW's legendary handling experience.