2018 Nissan Leaf Transmission Problems

Your 2018 Nissan Leaf randomly shuts down while driving on the highway under load (climbing an incline with climate control on), leaving you stranded. Diagnostics show multiple failed cells in the main battery, but the manufacturer claims this is normal wear despite the car having only 300 miles and being under warranty. This has happened three times on the freeway, creating a serious safety risk. The battery may need replacement or repair to restore reliable power and prevent future shutdowns.

Your 2018 Nissan Leaf displayed an "EV System No Power" warning message and wouldn't shift into drive. The dealership replaced the 12V battery, but the error returned when they tried to charge the car. After charging, the Power Distribution Module experienced a thermal event that caused it to overheat and release soot. The repair may require replacement of the high-voltage battery, Power Distribution Module, and diagnosis of the charging system.

Your Nissan Leaf's battery is showing a false discharge rate of about 5% per second when driving at highway speeds (60+ mph) in cold weather below 15°F with the battery below 60% charged — the displayed charge drops rapidly, but recovers when you slow down or stop. This forces you to reduce speed and disable cabin heating to keep the vehicle operational, which can be unsafe if traffic conditions require normal speeds. The dealership confirmed at least one faulty battery module, though no diagnostic codes appear. The fix will likely require replacing the defective battery module or the entire battery pack.