The second-generation Nissan Xterra (N50, 2005–2015) pairs the 4.0-litre VQ40DE V6 with a turn-key NATS immobiliser. Its combination meter has a built-in self-diagnosis mode, and disconnecting the battery calls for an idle-air-volume relearn afterwards. There is no resettable dashboard service light on this generation, so the pages below cover only the resets that genuinely exist.