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.
DTC P0A82 (63): Battery Module Overheating: General Description
To control the battery module temperature, the IMA (integrated motor assist) system is equipped with a battery module fan. The motor assist stops regeneration and the IMA system is shut down when there is an increase in the battery module temperature because the battery module fan is malfunctioning. Therefore, a malfunction in the battery module fan is detected to avoid problems caused by overheating. If the battery module cooling system works normally when the battery module temperature is high and the battery module is in the power save mode, the battery module temperature decreases depending on the input/output current.
If the amount of decrease in the battery module temperature is out of a set value when comparing both the input/output current and the battery module temperature with their predetermined values, a malfunction is detected and a DTC is stored.
| Execution | Continuous |
| Sequence | None |
| Duration | 30 minutes or more |
| DTC Type | One drive cycle, MIL ON, IMA system indicator ON |
| Condition | Minimum | Maximum |
|---|---|---|
| BCM module power-supply voltage | 7.5 V | - |
| Battery module fan mode | Low | - |
| Engine speed | 1,500 rpm | - |
| No active DTCs | BCM | |
| Battery Current Average (A) | Decreasing Temperature of Battery Module °F (°C) |
|---|---|
| 0 | 5.4 (3) or less |
| 2 | 3.6 (2) or less |
| 5 | 1.8 (1) or less |
| 9 | 0.9 (0.5) or less |
| 12 | -2.7 (-1.5) or less |
| 15 | -5.4 (-3) or less |
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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.
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