https://www.vice.com/en_us/article/dy8knq/tesla-recalls-135000-cars-due-to-faulty-flash-memory

Tesla has to recall 135,000 cars due to a long-known issue with the flash memory on older Model S and Model X vehicles that may prevent them from displaying the rearview backup camera or turn signals properly. 

The recall order specifically applies to Model S sedans made from 2012 to 2018 and Model X SUVs from 2015 to 2018 that have the NVIDIA Tegra 3 processor and Hynix 8GB flash memory. Essentially, the problem boils down to 8 GB not being nearly enough flash memory for the vast amounts of data processing the car must do, causing the flash storage to rapidly wear down, resulting in "failures of the center display software" (later models use 64 GB of flash memory). Because virtually every function in Teslas other than accelerating and braking occurs through that center display console, after six months of review the National Highway Transportation Safety Administration (NHTSA) deemed this a safety issue.