: On hot days, running the AC helps lower the cabin temperature, which the battery uses for cooling. This can actually improve system efficiency by preventing overheating. Regular Driving
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. This code is triggered when the hybrid control ECU detects that the voltage difference between battery blocks exceeds a specific threshold, typically due to an internal malfunction. Core Issue & Detection Voltage Imbalance: : On hot days, running the AC helps
The system has identified that one or more battery blocks are significantly lower in voltage than the rest, usually due to internal module degradation or a faulty sensor. It is a part designed specifically for Toyota’s
to monitor real-time block voltages and internal resistance. 3. Applicable Vehicles
Illumination of the (Red Triangle) and a "Check Hybrid System" message.