Lexus RX400h intermittent hybrid system check required on Lexus RX400h

Some Lexus RX400h owners report experiencing issues when the vehicle displays the message "intermittent hybrid system check required," indicating potential problems with the hybrid system. This warning may stem from battery issues, such as a failing hybrid battery or a malfunctioning 12-volt battery, both of which are crucial for the hybrid system's operation. Additionally, owners may face complications from faulty components within the hybrid system, including the inverter or motor generator, which can be diagnosed through a diagnostic scan. The message might also be triggered by the need for software updates, which can be resolved by visiting a Lexus dealership. Regular maintenance is essential, as some owners find that adhering to the manufacturer's recommended schedule helps prevent hybrid system issues. It is advisable for owners encountering this message to have their vehicle inspected by a qualified technician to accurately diagnose and address the problem promptly, preventing further complications.