What Leads to an Active Rear-Wheel Steering Actuator Failure in European Cars

There are many components in your European car that play a key role in its smooth running and better handling; however, they are the least discussed. In fact, the active rear-wheel steering actuator is one such part in your European car, which is responsible for adjusting the rear wheel angles depending on the speed, steering angle, and yaw rate of your car.

Now, issues with the functioning of the active rear-wheel steering actuator can adversely affect the performance of your vehicle. There are certain factors that lead to active rear-wheel steering actuator failure, and in this article, we will discuss the factors that lead to active rear-wheel steering actuator failure in European cars.

Overheating and Thermal Issues

One of the leading reasons behind active rear-wheel steering actuator failure in European cars is linked to overheating of the actuators in vehicles. In fact, in certain cars, the rear-wheel steering actuators are located close to the exhaust system or near other heat-generating components, which can adversely affect the integrity of these components.

In fact, the continuous exposure to high levels of heat can take a toll on the actuator’s internal components, like the motor windings, electronic circuits and lubrication within the actuator, which can be negatively affected. In fact, due to the overheating problem, the insulation present inside the motor breaks down, raising the risk of short circuits or reduced torque output.

Furthermore, the buildup of thermal stress can lead to warping or the formation of cracks on the plastic components within the actuator, which affects its response and precision. That is why you must avoid aggressive driving, frequent stop-and-go traffic in hot climates, and take measures against insufficient heat shielding to prevent overheating and thermal issues.

Mechanical Wear and Tear

The active rear-wheel steering actuator comes equipped with a gearbox, which is responsible for converting the electric motor’s rotational motion into linear movement to help steer the rear wheels of your vehicle. Over the years, as your European car gains miles, the gears present within the gearbox can experience a lot of wear and tear due to friction and the constant load of steering.

Moreover, the linkages that connect the actuator to the rear suspension components can behave erratically or become loose over the years. Now, the worn gears in your European car lead to backlash from the steering and an increase in noise while driving your car.

In fact, the excessive wear and tear can lead to the active rear-wheel steering actuator binding or failing completely. That is why the moment you notice something is off with the handling of your high-end car, you must get it inspected by our certified mechanics immediately.

Electrical Issues and Short Circuits

The active rear-wheel steering actuator motor is heavily reliant on specific voltage and current for its optimal operation. Now, if there are underlying issues with the functioning of the electrical system in your vehicle, then you might be faced with a lot of issues, ranging from voltage spikes to short circuits and excessive current draw, which can damage the actuator.

Most of the time, it is seen that the electrical overloads lead to burning of the motor windings, damage to the electronic control circuits, or melt down the internal components of your European car. In addition to that, the occurrence of short circuits can create a direct path to ground, which can lead to erratic functioning of the rear-wheel steering actuator.

At times, the electrical problems in your European car are linked to damaged wiring harnesses, failing connectors, a malfunctioning voltage regulator, and a problematic battery.

Failing Sensor

There are a host of sensors used in your vehicle that help in its smooth running by keeping a tab on the functioning of the vital components. In fact, the active rear-wheel steering actuator relies on various sensors like the steering angle sensor and wheel speed sensor for its optimal operation.

Now, underlying issues with the functioning of these sensors in your vehicle can make it difficult for your active rear-wheel steering actuator to function properly. In fact, the erroneous data from the failing sensors can adversely affect the system’s ability to adjust the steering of your car based on its speed.

Finally

The above-discussed factors are some of the leading reasons behind the active rear-wheel steering actuator failure in European cars. While driving, if you come across any unusual functioning of your power steering system, you must immediately get it inspected by a professional mechanic.

We at Tanner Motors located in Phoenix, AZ is a leading shop in the entire area for repairing and servicing European cars. We specialize in Volvo, BMW, Mini Cooper, Mercedes Benz, Lexus and Audi. All our technicians are factory trained.