Tesla’s steer‑by‑wire leap
Tesla filed a patent for a multi‑turn steering feedback actuator that effectively doubles steer‑by‑wire rotational range, and Elon Musk confirmed a late‑April Roadster unveiling tied to the tech ( ). The system is aimed at far finer high‑speed control for the next‑gen Roadster — a potentially big handling upgrade for electric supercars if it reaches production ( ).
The U.S. application for the patent is published as Application No. 20260077802 and lists a publication date of March 19, 2026 with a filing date of September 18, 2024. (patents.justia.com) The filing credits inventors Stephen Alexander Harasym and Joel Timothy Van Rooyen on the submission assigned to Tesla. (teslahubs.com) The patent text describes a stop ring with two discrete stops that engage an input‑shaft pin and a housing stop to create a two‑stage travel limit that increases usable steering wheel rotation while keeping the actuator compact. (patents.justia.com) The document and accompanying coverage say the mechanism enables roughly ±340° of wheel rotation and can be tuned between common ranges (around 170°) up to about 340°, with the filing noting the architecture could be extended toward configurations as large as 540°; summaries also note polymer O‑rings at contact surfaces to soften end‑stop feel. (patents.justia.com) Elon Musk posted on X on March 17, 2026 that the “New Roadster unveil probably in late April,” providing a late‑April window for the vehicle tied to this steer‑by‑wire work. (electrek.co) Tesla already deploys steer‑by‑wire architectures in production programs such as the Cybertruck’s triple‑redundant system, showing the company has prior engineering and safety experience with electronic steering control. (leandesign.com)
