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.
Procedure Description
During certain conditions such as long term vehicle storage, the drive motor battery may discharge to such a state that cranking of the engine is not possible.
Jump Assist is a procedure that allows the accessory DC power control module (APM) to convert 12V energy into 300V energy to charge the drive motor battery. Jump Assist is initiated with a scan tool output control. For the duration of the Jump Assist Procedure, the APM, hybrid powertrain control module (HPCM) and the battery energy control module (BECM) remain awake and communicating while the ignition is OFF.
NO RELATED
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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.