The sensor that prevents a Ford Escape (and most modern cars) from having a dead battery isn't a single sensor but a system involving several components working together. The key component is the
alternator, which generates electricity to charge the battery while the engine is running. The
battery voltage sensor (often integrated into the Power Control Module - PCM) monitors the battery's voltage and signals the alternator to adjust its output accordingly.
There isn't one specific sensor named "keeps car from going dead". It's a combination of the alternator, battery voltage sensor (within the PCM), and the charging system's control logic that prevents a dead battery. If there's a problem, it could be a faulty alternator, a bad battery, a wiring issue, or a problem with the PCM itself.
