INFINITI QX80 starting issues and low battery, suspected flex plate problem on INFINITI QX80

Some Infiniti QX80 owners report experiencing starting issues, often characterized by slow cranking or clicking noises, which may indicate a dead battery. Before concluding that the battery is the problem, it's essential to rule out other potential factors such as a faulty alternator, loose battery connections, or poor ground connections. A weak or dead 12V battery is frequently the cause of the engine not cranking or cranking slowly. Owners are advised to conduct a battery voltage test to assess the battery's condition, which includes measuring voltage between the battery poles and checking the acid level. Additionally, some owners find that even after replacing a battery under warranty, starting issues persist, prompting further troubleshooting to consider the alternator or starter motor as possible causes. It's also noted that if the battery dies after the vehicle has been unused for over three days, this may be a normal occurrence for some QX80s, suggesting that the issue could be related to the vehicle's design or electrical system rather than the battery, starter, or alternator. Therefore, while a flex plate problem may sometimes contribute to starting issues, addressing common causes like battery health and electrical connections is crucial before focusing on the flex plate.