Cold Start Hybrid/EV Battery Performance
During cold start, the HV battery cannot deliver the expected power. Cold cell impedance reduces available current.
Affected components
- Drive motor a
- Inverter
- Hv battery
Common causes
- High likelihood: Cell impedance high at cold
- Medium likelihood: Battery heater not yet effective
- Low likelihood: Pack cell imbalance approaching service threshold
Possible symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Diagnostic notes
- The malfunction indicator lamp may illuminate
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.