A dead battery may not always require replacement, as it could be something simple like leaving the headlights on or a faulty component causing parasitic drain.
Not all alternator issues require a replacement, as problems can also be caused by worn-out belts, loose wiring, or a failed regulator.
Auto-electrical problems are not always expensive to fix, as issues like corroded terminals, blown fuses, or disconnected wires can have relatively simple and affordable solutions.
Modern cars are not immune to electrical problems, as advanced systems can still experience faults due to software updates, sensor malfunctions, etc.