U.S. security regulators enjoy requested Tesla to purchase 158,000 autos over media defend a watch on unit failures that aim the touchscreen shows to stop working, following a months-long investigation by the Nationwide Motorway Website visitors Security Administration.
The Office of Defects Investigation unit of the agency clear that the failure of the media defend a watch on unit is a security danger since functions like the backup camera and defogging and defrosting surroundings controls stop working as successfully as audible chimes, that are broken-down when the flip signal indicator is activated and to alert drivers whereas the automotive’s Autopilot developed driver assistance blueprint is engaged. Reports of the MCUs suddenly failing enjoy been a subject for years in Tesla forums.
The failure is prompted when the reminiscence storage in a flash power broken-down in the broken-down in these autos reaches potential, investigators concluded. The definitely solution is to change the bodily piece of hardware. Vehicles affected comprise Mannequin S sedans built between 2012 and 2018 as successfully as Mannequin X SUVs in 2016 by 2018.
Tesla did no longer answer to a seek data from for comment. Then again, the company did present data to NHTSA, which is contained in the document. Tesla confirmed to NHTSA that every body items will inevitably fail given the reminiscence blueprint’s finite storage potential. Tesla equipped its dangle statistical mannequin showing the quantity of projected weekly MCU repairs from 2020 to 2028. The automaker estimated that replace charges for MCU failures will peak in early 2022 and step by step decline unless (end to) fleshy piece turnover has been accomplished in 2028, in accordance with the document.
These autos are equipped with an NVIDIA Tegra 3 processor with an built-in 8GB eMMC NAND flash reminiscence blueprint. Allotment of this 8GB storage potential is broken-down whenever the automotive is started. The eMMC NAND cell hardware fails when the storage potential is reached, main to failure of the MCU, the agency acknowledged.
The eMMC NAND flash blueprint’s lifespan primarily primarily based completely upon the quantity of program/erase cycles, after which the MCU fails attributable to reminiscence keep on-out. Investigators clear that the expected utilization life ranking for the 8GB eMMC NAND flash reminiscence blueprint is ready 3,000 Program-Erase cycles, after which the eMMC NAND flash reminiscence blueprint would change into completely consumed and now no longer be operational. At a day to day cycle utilization payment of 1.4 per block, accumulation of three,000 P/E cycles would ranking completely 5 to 6 years, the agency acknowledged.
The agency has formally requested that Tesla provoke a purchase to recount all dwelling owners, purchasers, and sellers of the discipline autos of this security defect and present a solve.