Jeep Wrangler ESS battery system failure risk with potential IBS module replacement needed on Jeep Wrangler

Some Jeep Wrangler owners report experiencing issues related to the Engine Start-Stop (ESS) battery system, particularly concerning the Intelligent Battery Sensor (IBS) module. These problems can arise if the IBS is not functioning correctly, leading to the ESS being disabled and potentially resulting in the vehicle failing to restart after an auto stop, which could leave owners stranded. Additionally, some owners may find it necessary to replace the IBS module if it fails to provide accurate measurements of current, voltage, and temperature from the battery. Electrical problems related to the IBS, such as loose or corroded battery terminals and moisture around the battery sensor, can further complicate the situation. Therefore, monitoring the functionality of the IBS is crucial for preventing potential battery system failures and ensuring the Jeep Wrangler operates properly.