MCU Tester

Background

In the Model S and X, Tesla uses two different MCUs (Main Computer Unit). This test checks which hardware is in your vehicle when run from the vehicle’s browser.

Test Results
Unit Platform Display UserAgent
Expected Values
Unit Platform Display UserAgent
MCU1 Linux armv7l 1200×1920 Mozilla/5.0 (X11; Linux) Apple WebKit/534.34 (KHTML, like Gecko) QtCarBrowser Safari/534.34 [Old browser]
MCU1 Linux armv7l 1200×1920 Mozilla/5.0 (X11; GNU/Linux) AppleWebKit/601.1 (KHTML, like Gecko) Tesla QtCarBrowser Safari/601.1 [New browser]
MCU2 Linux x86_64 1200×1920 Mozilla/5.0 (Linux; x86_64 GNU/Linux) AppleWebKit/601.1 (KHTML, like Gecko) Version/8.0 Safari/601.1
MCU2 Linux x86_64 1200×1920 Mozilla/5.0 (X11; GNU/Linux) AppleWebKit/601.1 (KHTML, like Gecko) Tesla QtCarBrowser Safari/601.1
Notes
  • Platform indicates the MCU processor, the Nvidia Tegra 3 (arm) in MCU1, and Intel Atom E8000 series CPU (x86_64) in MCU2. MCU2 started shipping in all Tesla S/X manufactured at the start of March 2018.
  • UserAgent relates to the hardware and browser software in use. The browser was upgraded in version 2018.14 for MCU1. Expected values were collected in April 2018
  • This utility has not been tested with the Model 3 yet and the display value may not be accurate.
What’s New in MCU2
  • Faster CPU, results in snapper operation
  • WiFi Support for 5 GHz band
  • External Bluetooth Antenna (perhaps for future feature – using a phone as a key like M3)