Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
IPU Module Fan
The battery module, the MPI module, and the DC-DC converter generate heat during assist/regeneration. The IPU is equipped with a fan to cool these parts, to assure proper battery performance, and to protect the system. The fan has a control circuit and rotation sensor that are controlled by the MCM. When the temperature of the battery module, the MPI module, or the DC-DC converter exceeds the specified value, the MCM operates the IPU module fan. The cooling air is drawn into the battery module from the left side of the rear seat, then it is exhausted into the cargo area through the MPI module heat sink and the DC-DC converter heat sink.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.