Can you jump a car with a Chevy Volt?
Yes—jump-starting a Volt is possible, but only through its 12-volt battery using jumper cables or a portable jump starter, and never by directly powering the high-voltage battery.
The Chevrolet Volt is a plug-in hybrid that relies on a high-voltage propulsion battery for electric driving and a separate 12-volt system for electronics and startup logic. When the 12-volt battery is dead, the vehicle won’t power up, and the HV system won’t engage. Jump-starting the 12-volt circuit is a common roadside fix, but it must be done with care to avoid damage or injury.
Understanding the Volt's electrical system
Knowing the distinction between the 12‑volt starter battery and the high‑voltage propulsion battery helps you jump‑start safely.
Key points about the Volt’s powertrain:
- The 12‑volt battery powers accessories, sensors, and the computer systems that boot the vehicle.
- The high‑voltage (HV) battery drives the electric motor and is isolated from the 12‑V circuit by safety interlocks.
- Do not attempt to jump‑start or connect to the HV battery directly; use the designated 12‑V jump points and procedures.
With this understanding, you can proceed to address a depleted 12‑V battery without risking the high‑voltage system.
Jump-start procedure for the Volt
To safely revive the 12‑V system, follow these steps:
- Position both vehicles, set the parking brakes, and ensure the Volt is in Park (or Neutral if required) with ignition OFF in both cars.
- Open the Volt’s hood and locate the 12‑V jump terminals or battery and identify the positive (+) and ground points. Refer to the owner’s manual for the exact location.
- Connect the donor vehicle’s positive jumper clamp to the Volt’s positive jump terminal, then connect the donor’s negative clamp to a solid chassis ground on the Volt (avoid connecting directly to the HV system or battery).
- Connect the donor vehicle’s negative jumper clamp to its own negative battery terminal or engine ground as instructed, ensuring a solid connection.
- Start the donor vehicle and let it run for a few minutes. Attempt to start the Volt by pressing the Power button with the brake pedal depressed. If the 12‑V system comes alive, the Volt should initialize and be able to run.
- Once the Volt starts, remove the cables in the reverse order: negative from the Volt, negative from the donor, positive from the Volt, then positive from the donor. Keep the Volt running to allow the 12‑V battery to recharge.
- Drive or idle for about 20 minutes to recharge the 12‑V battery; avoid turning the vehicle off immediately after a successful start.
If the Volt does not respond after a period of charging, stop, consult the owner's manual, or seek roadside assistance. A completely dead HV battery or a faulty 12‑V battery may require professional service.
Safety considerations
Jump‑starting a plug‑in hybrid like the Volt carries potential hazards to both people and equipment. The high‑voltage system is isolated from the 12‑V circuit, but improper handling can cause sparks or electrical shock. Always use proper jump cables or a certified jump starter and follow the vehicle’s manual guidance. If you’re unsure about the procedure, or if you notice damaged cables, leaking fluids, or signs of HV system trouble, contact roadside assistance.
When to seek professional help
If the Volt fails to start after a jump attempt, if the 12‑V battery shows signs of damage, or if you suspect issues with the high‑voltage system, do not continue to jump‑start. Have the vehicle inspected by a certified technician or gm dealership to avoid safety risks and further damage.
Alternatives and tips
Consider these safer or more convenient options when a jump is not feasible:
- Use a portable 12‑V jump starter with appropriate rating instead of a second vehicle.
- Ensure you have a well-maintained 12‑V battery or replace it if it’s old or swollen.
- If the 12‑V battery repeatedly fails, have the Volt inspected for charging or electrical system issues.
In all cases, consult the owner’s manual for model‑specific instructions, since battery locations and jumper point designs can vary by year and trim. When in doubt, call roadside assistance.
Summary
In practice, you can jump a Chevy Volt by energizing its 12‑V system with jumper cables or a portable jump starter, never by attempting to power the high‑voltage battery directly. Follow the designated jump points and safety precautions, and remove the cables in reverse order once the vehicle starts. If unresolved issues persist, seek professional help to protect both your safety and the vehicle’s electrical system.
