Feds asks Tesla to recall 158,000 vehicles over failing touchscreen displays – ProWellTech

U.S. safety regulators have asked Tesla to recall 158,000 vehicles for media control unit failures causing touchscreen displays to stop working, following a months-long investigation by the National Highway Traffic Safety Administration.

The investigation unit of the agency’s Defect Office has determined that the failure of the media control unit is a safety concern as functions such as the backup camera and the anti-fog and defrost setting controls stop working as well as the Audible signals, which are used when the turn signal is activated and to alert drivers while the vehicle’s advanced Autopilot driving assistance system is activated. Reports of suddenly failing MCUs have been a topic on Tesla forums for years.

The failure is caused when the memory in a flash drive used in used vehicles in these vehicles reaches capacity, the investigators concluded. The only solution is to replace the physical hardware component. Vehicles affected include Model S sedans built between 2012 and 2018 and Model X SUVs from 2016 to 2018.

Tesla did not respond to a request for comment. However, the company provided information to NHTSA, which was contained in the report. Tesla confirmed to NHTSA that all drives will inevitably fail given the memory device’s limited storage capacity. Tesla has provided its own statistical model showing the number of expected weekly MCU repairs from 2020 to 2028. The automaker has estimated that replacement rates for MCU failures will peak in early 2022 and gradually decline until the (near) complete turnover of the parties is reached in 2028, according to the report.

These vehicles are equipped with an NVIDIA Tegra 3 processor with a built-in 8GB eMMC NAND flash memory device. Part of this 8GB storage capacity is used every time the vehicle is started. The eMMC NAND cell hardware fails when storage capacity is reached, resulting in the MCU failing, the agency said.

The eMMC NAND flash device life span based on the number of program / erase cycles, after which the MCU fails due to running out of memory. Researchers determined that the expected life of the 8GB eMMC NAND flash memory device is approximately 3,000 program wipe cycles, after which the eMMC NAND flash memory device would wear out completely and no longer be operational. With a daily cycle utilization rate of 1.4 per block, the build-up of 3,000 P / E cycles would only take 5-6 years, the agency said.

The agency has officially requested that Tesla initiate a recall to notify all owners, buyers and dealers of the vehicles in question of this safety defect and provide a remedy.

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