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How to Disconnect a Car or Truck Battery

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  1. How to Disconnect a Car or Truck Battery, How to Disconnect a Car or Truck Battery: passo 1, imagem 1 %32 How to Disconnect a Car or Truck Battery, How to Disconnect a Car or Truck Battery: passo 1, imagem 2 %32 How to Disconnect a Car or Truck Battery, How to Disconnect a Car or Truck Battery: passo 1, imagem 3 %32
    • Before you begin, switch the ignition off and remove the key.

    • Make sure the transmission is in Park (or first gear if you have a manual gearbox) and that the parking brake is engaged.

    • Put on work gloves and safety goggles if you have them available.

    • In addition to being dirty, the battery contains corrosive agents and may release flammable gases.

    • Gloves can also help protect you from an unpleasant shock if you accidentally mishandle the battery.

  2. How to Disconnect a Car or Truck Battery, Open the hood (bonnet): passo 2, imagem 1 %32 How to Disconnect a Car or Truck Battery, Open the hood (bonnet): passo 2, imagem 2 %32 How to Disconnect a Car or Truck Battery, Open the hood (bonnet): passo 2, imagem 3 %32
    • Most motor vehicle batteries are located in the engine bay, under the hood (a.k.a. bonnet). If your battery is located elsewhere, skip to Step 5.

    • If you're not sure, simply continue reading.

    • Pull the hood release lever. It's usually located inside the car, near the steering wheel.

  3. How to Disconnect a Car or Truck Battery: passo 3, imagem 1 %32 How to Disconnect a Car or Truck Battery: passo 3, imagem 2 %32 How to Disconnect a Car or Truck Battery: passo 3, imagem 3 %32
    • Raise the hood by simultaneously lifting and pressing up on the hood latch release (usually located beneath the front edge of the hood, near the center or center-right).

  4. How to Disconnect a Car or Truck Battery: passo 4, imagem 1 %32 How to Disconnect a Car or Truck Battery: passo 4, imagem 2 %32 How to Disconnect a Car or Truck Battery: passo 4, imagem 3 %32
    • At this point, depending on the vehicle, your hood may raise and support itself automatically.

    • If not, use one hand to hold the hood open temporarily while securing the hood with the prop rod:

    • Lift one end of the prop rod up or out to release it from the front area of the engine bay.

    • Swing the end of the prop rod up and slide it into the cutout on the underside of the hood.

    • Make sure the hood is well secured before you let go with your other hand, or it may fall and injure you.

  5. How to Disconnect a Car or Truck Battery: passo 5, imagem 1 %32 How to Disconnect a Car or Truck Battery: passo 5, imagem 2 %32 How to Disconnect a Car or Truck Battery: passo 5, imagem 3 %32
    • Locate the battery. It's normally rectangular and roughly 8-14" across.

    • The battery may be easy to spot, or it may lie under a plastic cover—usually marked with positive (+) and/or negative (-) symbols.

    • On some models, the battery may be located in the trunk—usually under or behind the trunk lining. Look around or consult your owner's manual.

  6. How to Disconnect a Car or Truck Battery: passo 6, imagem 1 %32 How to Disconnect a Car or Truck Battery: passo 6, imagem 2 %32 How to Disconnect a Car or Truck Battery: passo 6, imagem 3 %32
    • Using a correctly sized wrench or socket, loosen the nut/bolt securing the cable on the negative battery terminal.

    • Always disconnect the negative cable first (before removing the positive cable).

    • The negative terminal may be marked with a minus (-) symbol, or it may be unmarked. The positive terminal is almost always marked with a plus (+) symbol, often in red.

    • If the nut or bolt spins without loosening, it may be necessary to counter-hold the opposite side with a second wrench or socket.

  7. How to Disconnect a Car or Truck Battery: passo 7, imagem 1 %32 How to Disconnect a Car or Truck Battery: passo 7, imagem 2 %32
    • Remove the cable from the negative battery terminal.

    • When connecting the battery, it is advised to roughen up the battery terminals and clean the cable clamp beforehand.

    • Upon reconnecting the battery, make sure to seal the pole connections with an appropriate terminal grease or terminal spray.

  8. How to Disconnect a Car or Truck Battery: passo 8, imagem 1 %32 How to Disconnect a Car or Truck Battery: passo 8, imagem 2 %32
    • Prevent the cable from making accidental contact with the terminal by pushing it aside and/or wrapping the cable clamp with a dry rag.

Conclusão

To reassemble your device, follow these instructions in reverse order.

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