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US highway safety agency ends probe of Tesla suspension failures

The National Highway Traffic Safety Administration has closed an investigation into Tesla. Photo by Manuel Velasquez/Unsplash

U.S. highway safety regulators have closed an investigation into complaints that suspension parts can fail on nearly 75,000 Tesla vehicles, and they won't seek a recall.

The National Highway Traffic Safety Administration said in documents released Wednesday that it found 426 reports of failures on the Model S from 2015 through 2017 and the Model X from 2016 and 2017. One crash was reported with no injuries.

But the agency found in testing and in checking complaints that the Teslas could still be controlled by drivers if the front fore links failed. So it decided to close the probe that was opened in November of 2020.

Texas-based Tesla did a customer satisfaction campaign in 2017 to replace fore links on some of the vehicles. But NHTSA said that didn't cover 75% of the failures identified in its investigation. The agency recommended that Tesla expand the replacement program.

A message was left Wednesday seeking comment from Tesla.

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A View From HETI

Six companies have joined Greentown Houston, focused on long-duration energy storage systems, 3D solar towers and more. Photo courtesy Greentown Labs.

Greentown Labs announced the six startups to join its Houston community in Q2 of 2025.

The companies are among a group of 13 that joined the climatetech incubator, which is co-located in Houston and Boston, in the same time period. The companies that joined the Houston-based lab specialize in a number of clean energy applications, from long-duration energy storage systems to 3D solar towers.

The new Houston members include:

  • Encore CO2, a Louisiana-based company that converts CO2 into ethanol, acetate, ethylene and other sustainable chemicals through its innovative electrolysis technology
  • Janta Power, a Dallas-based company with proprietary 3D-solar-tower technology that deploys solar power vertically rather than flatly, increasing power and energy generation
  • Licube, an Austin-based company focused on sustainable lithium recovery from underutilized sources using its proprietary and patented electrodialysis technology
  • Newfound Materials, a Houston-based company that has developed a predictive engine for materials R&D
  • Pix Force, a Houston-based company that develops AI algorithms to inspect substations, transmission lines and photovoltaic plants using drones
  • Wattsto Energy, a Houston-based manufacturer of a long-duration-energy-storage system with a unique hybrid design that provides fast, safe, sustainable and cost-effective energy storage at the microgrid and grid levels

Seven other companies will join Greentown Boston's incubator. See the full list here.

Greentown Houston also added five startups to its local lab in Q1. Read more about the companies here.

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