Modern cars are basically rolling computer networks. When a warning light pops...

https://www.generate-bookmark.win/modern-cars-are-basically-networks-of-computers-on-wheels-if-you-re-still

Modern cars are basically rolling computer networks. When a warning light pops up, your basic code reader only gives you a surface-level hint. To actually fix the car, you need diagnostic software that talks to every ECU and tracks live data streams