Steering Wheel Malfunction in Mercedes (Here Is HowTo Fix)

Steering wheel malfunction Mercedes

Have you ever wondered what the steering wheel malfunction in Mercedes means and how to fix that? Well, we got you covered.

The Mercedes-Benz brand is synonymous with luxury, performance, and advanced technology. However, even these superior vehicles can encounter various issues, one of which is related to the steering wheel malfunction.

The power steering system plays a crucial role in the ease and safety of vehicle handling. In this comprehensive guide, we’ll discuss the most common causes of steering wheel malfunction in Mercedes-Benz vehicles and the possible solutions to fix them.

1. Recognizing Signs of Steering Wheel Failure

Before diving into the causes and solutions, it’s essential to understand the common signs associated with steering wheel failure in a Mercedes-Benz.

Being able to recognize these symptoms early on can help you address the issue before it escalates into a more severe and costly problem. The most common signs of steering wheel failure in a Mercedes include:

1.1 Stiff Steering

If you find it challenging to turn the wheel despite applying significant effort, your Mercedes might be experiencing stiff steering. This issue often points to a lack of power steering fluid or other related problems.

1.2 Loose Steering

On the other hand, if turning the wheel is too easy and the vehicle does not seem to respond accordingly, you might be dealing with loose steering. This is another sign that your steering wheel is failing and requires an immediate professional inspection.

1.3 Groaning Noises

Groaning noises while turning the steering wheel could be a sign of steering wheel problems. If you hear such noises, it’s essential to consult a professional mechanic for expert advice.

1.4 Slower Steering Response

If your steering response is slower than usual, it could mean that your tires are not in proper communication with the steering wheel.

This issue could be due to alignment or wheel problems or more likely indicate steering wheel failure in your Mercedes.

2. Common Causes of Steering Wheel Malfunction

Understanding the root causes of steering wheel malfunction in your Mercedes-Benz can help you take the necessary steps to resolve the issue. Some of the most common factors that can lead to steering wheel failure include:

2.1 Low Battery Voltage

A malfunctioning power steering system can be caused by a partially discharged battery or a faulty voltage regulator. Make sure to charge the battery using a smart trickle charger to resolve this issue.

2.2 Blown Fuse

The electric power steering motor in your Mercedes-Benz relies on a 125 A pre-fuse for its operation. If this fuse blows, it can disable the electric power steering assist, making the steering wheel difficult to turn. The fuse is typically located in the pre-fuse box in the engine bay.

2.3 Faulty Steering Motor

A failing power steering motor can result in heavy steering and trigger a steering malfunction warning on your dashboard. The steering motor, mounted on the steering rack, can be easily replaced if it is the source of the issue.

2.4 Software Issue

Sometimes, the software for the electric steering system may be the culprit and require an update. In such cases, you’ll need to take your Mercedes-Benz to an authorized dealer for a software update.

Make sure to call your local dealer to check if there’s an update available for your vehicle’s steering system.

2.5 Recall

Some Mercedes-Benz models have been recalled due to errors in the electric power steering control unit software. For example, approximately 28,000 model-year 2015 Mercedes-Benz C300 and C400 4Matic sedans were recalled for this issue.

It’s essential to check if your vehicle has an open recall by visiting the NHTSA website and entering your VIN.

3. Diagnosing the Mercedes Steering Module

To diagnose the steering module in your Mercedes-Benz, you’ll need an OBD-II scanner capable of reading and clearing codes for all your vehicle’s control modules. Follow the steps below to perform a diagnosis:

  1. Connect the scanner to the diagnostic port under the dashboard.
  2. Turn on the ignition.
  3. Navigate to Mercedes > Select Model > Control Units.
  4. Select Chassis, then choose ES – Electric Power Steering.
  5. Scroll down to read codes and press enter. Review all the codes and write them down for future reference.
  6. If you only have stored codes, select Clear Codes to erase them. If codes are present, fix the underlying problem.

4. Frequently Asked Questions

4.1 What does power steering malfunction mean on Mercedes?

A power steering malfunction warning on your Mercedes-Benz indicates that there’s an issue with your vehicle’s power steering system.

Several common problems can cause the power steering malfunction warning light to illuminate.

4.2 What are the common problems of Mercedes power steering malfunction?

Some common problems that can cause a power steering malfunction in a Mercedes-Benz include:

  • Faulty Power Steering Motor
  • Low Battery Voltage
  • Blown Fuse
  • Software Issue
  • Leaking Vehicle Fluid

4.3 Can you drive with a power steering malfunction?

If your vehicle is designed with a power steering pump, you should not use the car if the power steering stops working. Only operate the vehicle with a properly functioning power steering system.

5. Preventive Measures and Maintenance

To prevent steering wheel malfunction in your Mercedes-Benz, it’s crucial to follow these preventive measures and maintenance tips:

  1. Regularly check the power steering fluid level and top it up as needed.
  2. Inspect the power steering hoses, connections, and seals for leaks or damage.
  3. Ensure the battery is in good condition and charged adequately.
  4. Keep the software for the electric steering system up-to-date.
  5. Check for any open recalls on your vehicle and address them accordingly.

Read also >> Steering Angle Sensor Malfunction (Signs, Causes + Solution)

Read also >> Power Steering Assist Fault (Here Is How To Fix – Quick & Easy)

Read also >> Steering Wheel Malfunction: Problems; Diagnose (Fixed)

Read also >> Steering Wheel Lock Malfunction (Here Is What To Do)

6. When to Consult a Professional

While some steering wheel malfunctions can be fixed by following the steps provided in this guide, others may require the expertise of a certified Mercedes-Benz technician.

Steering wheel malfunction Mercedes. Fault finding and repair >> Check out the video below:


A steering wheel malfunction in your Mercedes-Benz can compromise your vehicle’s performance, safety, and overall driving experience.

By staying aware of the common signs and causes of steering wheel failure and addressing them promptly, you can keep your Mercedes running smoothly and safely.

Steve P.

Steve is an automotive technician, technical writer, and Managing Editor. He has held a lifelong passion for cars, with a particular interest in cars like the Buick Riviera. Steve is based in Boise, Idaho.

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