In this day and age, you're supposed to connect to your car via CAN-bus and perform tweaks with firmware and find failures via data from sensors. Even then, you're mostly operate on a high level, like, turn off ABS or whatever subsystem. Guys who started with old-school "get this car jacked" by getting hands greased finally ended up with patching firmware till morning. A quick car repair you mentioned unlikely goes beyond swapping a tire with a spare.