1. Safety First:
* Disconnect the negative terminal first: Always disconnect the negative (-) terminal before the positive (+) terminal to avoid accidental short circuits. Use a wrench (usually 10mm or 13mm, check yours) to loosen the nut and carefully remove the cable.
* Wear safety glasses: Battery acid can splash.
* Work in a well-ventilated area: Battery fumes can be harmful.
2. Locating the Battery:
The battery in a 2004 Oldsmobile Alero is typically located in the engine compartment, under a plastic cover or tray. It's usually near the front of the engine compartment, on the passenger side (right side in the US).
3. Removing the Battery:
* Locate the battery hold-down clamp: This is usually a metal clamp that secures the battery to the tray. You'll need to loosen this clamp using a wrench. The size of the wrench will depend on the clamp design; it could be 10mm, 13mm, or even something else.
* Remove the hold-down clamp: Once loosened, remove the clamp completely.
* Disconnect the positive terminal: Now, carefully disconnect the positive (+) terminal cable, again using a wrench.
* Lift out the battery: Gently lift the battery out of the tray. It might be heavy, so be careful.
Important Notes:
* Take photos: Before disconnecting anything, take pictures to help you remember how everything goes back together.
* Cable condition: Check the condition of your battery cables while you have them disconnected. Look for corrosion, cracks, or damage. Clean the terminals if necessary using a wire brush and baking soda solution.
* Proper disposal: Take your old battery to a recycling center. Auto parts stores often accept old batteries for recycling.
If you're unsure about any step, it's always best to consult your owner's manual or seek the assistance of a qualified mechanic. The manual will have diagrams and specific instructions for your particular Alero model.
