The Dealership Charges $180/hr for This, I Do It With an ESP32
Your car is not magic. It is just a noisy network with cupholders. Let me tell you how a service advisor tried to charge me $180 for a diagnostic that took my $18 microcontroller eleven seconds to do. I had a weird issue. Intermittent warning light. You know the one. The little orange gremlin that shows up on Tuesday, disappears on Wednesday, then comes back when you are already late for…
In a recent story published on Dev.to, a reader recounts their experience with a dealership charging $180 for a diagnostic that could be done with a $18 microcontroller in just eleven seconds. The article highlights the frustration many car owners face when dealing with expensive diagnostics and the potential for a simpler, more affordable solution.
The author explains that modern cars are essentially networks of small computers (ECUs) connected by a Controller Area Network (CAN bus), which can be accessed with minimal equipment and effort. By using an ESP32-C3, a CAN transceiver board, and an OBD-II pigtail, the author was able to diagnose a flaky wheel speed sensor issue without paying the dealership's exorbitant fee.
The story emphasizes the need for transparency in the automotive industry and the potential for car owners to take control of their vehicles' diagnostics.
Brief written by urgent.news from Dev.to's own syndicated text. Machine-written — may contain errors; check the original before relying on it.
