BMW Steering Wheel Warning Light: What to Do When It Turns On?

Sometimes a flashing steering wheel light is just the result of a minor technical glitch. In certain situations, however—it can indicate a serious problem with the steering system—which may have profound effects on the car's drivability. In this blog post, we will discuss the most common problems that can trigger the 'steering wheel warning light' in a BMW. But, before we get started, let's explore a few little-known facts about steering wheels.

A Short Note on Car Steering System

The steering system, as is evident from the name as well, is a mechanism that essentially allows the driver to manipulate the direction and movement of the vehicle. The steering system, like other car parts, continues to evolve with the invention of advanced technologies.

Modern-day vehicles come fitted with power steering systems. At the most basic level, the power steering system is of three different types namely: hydraulic power steering system, electric power steering system, and hybrid. The hydraulic power steering system is the most widely used steering system out there, but the electric power steering system also gaining popularity at a fast pace.

All modern cars manufactured by BMW are equipped with electric power steering systems. Just so you know, the E85 Z4 (2004) was the first BMW model with an electric power steering system. Now that you know some little-known facts about the steering system, let's explore some of the reasons behind the illumination of the 'steering wheel warning light' on a vehicle's dashboard.

Steering Wheel Warning Light Illumination: Causes

A flashing steering wheel warning light on the dash is simply an indication that there is something wrong with your vehicle's steering system. And, if you ignore it, things can go south in minutes and you may lose control over your vehicle in the middle of the road. For your convenience, we've put together some of the major factors that can contribute to a flashing steering wheel warning light on a vehicle's dash.

Vehicles with the hydraulic power steering system

Low fluid level

This is one of the leading reasons behind steering warning light illumination on the dashboard of a vehicle. Hydraulic power steering systems rely on a special type of fluid to enhance steering input. The fluid level- if goes down- due to a leak in the system or any other reasons, you won't be able to steer your car as easily as you used to. Fortunately, this is one of those problems that have a quick and easy fix that usually doesn't require the help of a mechanic.

The pump is defective

Nobody likes an unresponsive steering system. Not only is it inconvenient, but it can also cause a road accident. And, one of the leading problems that can make a vehicle's hydraulic power steering system unresponsive is a faulty pump. The pump, often considered the heart of a hydraulic power steering system, plays an important role in enhancing steering input. And, flaws with a part of such importance can activate the 'steering wheel warning' light on the dash.

Vehicles with electric power steering system

Faulty motor

Instead of a pump, the electric power steering system deploys an electric motor for enhanced steering input. The motor can't work on its own. It relies on a source of power and a control module. If the power supply gets interrupted or there is something wrong with the control module, the motor will stop working- the steering system becomes unresponsive as a result and concerned warning indicators including the steering warning light will come on.

Failing sensors

In addition to a motor, an electric power steering system relies on numerous sensors to amplify steering input. Some of those sensors are- the steering angle sensor, torque sensor and speed sensor. A malfunction in one or more of these sensors can render your car's power steering system unusable and activate the power steering warning indicator.

Things to Do When the Power Steering Warning Light Comes On

Don’t freak out… if your BMW’s power steering warning light starts flashing. Don’t ignore the light either. Take your BMW to a nearby auto service center so that the true culprit can be identified and repaired. Also, if you want to stay safe behind the wheel, you must ensure the upkeep of your vehicle’s steering mechanism.

To Sum Up

The power steering warning light of your BMW, if starts flashing, it can be alarming and annoying at the same time. Many things can result in the appearance of such a warning indicator on the dash of a vehicle. Fortunately, finding out its root cause is not that big of a deal

We at Fast lane European are San Jose's leading BMW, MINI & Volvo service center since 2001. We are dedicated to providing dealership quality repairs at an affordable price without sacrificing quality or service.