For a lot of electrical problems(not dash warning lights) you can get a long way with a battery charger and a simple voltmeterSorry, heated seats, cooled seats, big screen in the dash, 18 way seats, 10 speed transmissions, mirror warning lights, backup cameras and the rest of the gadgets and doo dads people now want are not compatible with that idea.
AM radio, 2-55 A/C with wing windows, manual windows, floor vents, headlights, side mirrors and it takes a few minutes to warm up. Still has 450 HP 500 ft lbs of torque and gets 17 mpg and a pleasure to drive even without cruise control.
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Most of the fears about vehicle electronics is a little overblown