Electric Cars

Steering irregularities in vehicles, often manifesting as a reluctance of the steering wheel to return to its central position after a turn, or a consistent pull to one side, are critical concerns for vehicle owners and technicians alike. These phenomena, commonly referred to as “memory steer” or “wandering steering,” signal underlying mechanical issues within the vehicle’s steering and suspension systems. Understanding the mechanisms behind these malfunctions and implementing effective diagnostic strategies are paramount for ensuring vehicle safety and optimal performance.

The primary culprit behind memory steer is often identified as 'binding' within the steering components. This can occur in various parts of the suspension and steering assembly. For vehicles equipped with MacPherson struts, the bearing situated beneath the upper mount is a frequent source of this binding. Over time, exposure to environmental elements like water, salt, and debris can degrade the lubricant within these bearings, leading to premature wear and eventual seizing. When this bearing fails to rotate freely, the strut assembly's pivot is compromised, preventing the steering wheel from naturally reverting to its centered position after a turn.

Heavy-duty trucks, which typically feature solid front axles, present a different set of potential causes for memory steer. In these vehicles, issues with the ball joints or the front axle U-joints can lead to similar steering problems. Improper installation or rough handling can damage ball joints, causing them to bind during the knuckle's rotation. Similarly, if the outer U-joints on the front axles begin to stiffen or bind, drivers may experience the characteristic signs of memory steer or a general wandering sensation while operating the vehicle. Precision in installation and component care is therefore crucial for these robust systems.

For automotive professionals, pinpointing the precise cause of memory steer requires systematic diagnostic approaches. When addressing a solid front axle, elevating the vehicle and disengaging the steering linkage and sway bar from both sides allows for manual manipulation of the knuckle. If the knuckle exhibits binding when pivoted, especially after rotating the brake rotor, the outer axle shaft U-joint is a strong candidate for the malfunction. Conversely, for vehicles with MacPherson struts, lifting the vehicle and disconnecting the tie rod end and sway bar permits rotation of the strut assembly by hand. Any grinding sounds or resistance during this rotation strongly suggest a faulty bearing within the strut assembly. These hands-on methods enable technicians to isolate the problem efficiently and accurately.

It is also vital to distinguish memory steer from 'power steering bind,' although both affect steering responsiveness. Power steering bind refers to difficulty or inability to turn the steering wheel during maneuvers, often due to issues with the power steering system itself. Diagnosing this involves isolating components. For hydraulic systems, removing the power steering pump belt can help determine if the pump is the cause. For electric power steering, temporarily disabling the power (e.g., by pulling a fuse) and then performing a figure-eight drive pattern can reveal if the electrical assist is at fault. Intermittent power steering issues are particularly alarming and require immediate attention, as they pose significant safety risks, unlike consistent mechanical binds which are more predictable.

The National Institute for Automotive Service Excellence (ASE) has announced that five of its certification examinations will be discontinued on December 31st. This strategic move aims to realign ASE's credentialing programs with the dynamic landscape of the automotive service industry. The specific tests slated for retirement include: Test E1: Truck Equipment Installation and Repair, Test E2: Electrical/Electronic Systems Installation and Repair, Test E3: Auxiliary Power Systems Installation and Repair, Test P4: General Motors Parts Consultant, and Test X1: Undercar Specialist Exhaust Systems. Individuals currently certified in these areas or planning to seek certification are strongly advised to complete their exams before the end-of-year deadline, as both new certifications and recertifications will no longer be available afterward.

This decision is a direct response to the continuous evolution of the automotive sector, driven by technological advancements and shifting industry demands. Matt Shepanek, Vice President of Credential Testing Programs for ASE, emphasized that retiring these lower-volume tests will free up crucial resources. These resources will then be redirected towards the development of new certification tests that address the emerging needs identified by industry partners. This proactive approach ensures that ASE's certifications remain relevant and valuable to technicians and employers alike, reflecting the organization's dedication to supporting the workforce in a rapidly changing environment.

Furthermore, Dave Johnson, President and CEO of ASE, highlighted the ongoing collaboration with leaders across the transportation industry to regularly assess and update the necessity for existing and new certifications. This includes a current initiative to revise certain core automotive series tests and introduce fresh certifications specifically tailored to contemporary advanced vehicle safety and security systems. The retirement of these five tests marks a pivotal step in this broader strategy, allowing ASE to allocate its expertise and efforts more efficiently to areas of growing importance and technological innovation within the automotive service field.

The automotive service industry is constantly advancing, and the commitment of organizations like ASE to adapt and evolve with it is crucial. By refining certification programs and investing in new areas, we not only ensure that technicians possess the most current and relevant skills but also promote safety, efficiency, and excellence across the board. This forward-thinking approach ultimately benefits consumers through higher standards of service and fosters a culture of continuous learning and professional development within the automotive community, driving progress for everyone involved.