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The 2012 INFINITI QX56 is experiencing issues with starting, which may be due to a faulty starter, a bad alternator, or a dead battery. Modern vehicles have higher electrical demands that can lead to alternator failures. A failing starter may cause the engine to crank slowly or not crank at all. Sometimes, the issue stems from a weak battery or a loose/corroded battery cable connection. It's recommended to first check the battery when troubleshooting starting problems, as it typically lasts 3-5 years and is often the culprit. Without a fully charged battery, the starter won't function properly.
Issues with starting the 2012 Infiniti QX56 may stem from a faulty starter, malfunctioning alternator, or depleted battery.