Here's a general guide, but proceed with caution:
Safety First:
* Disconnect the negative (-) terminal FIRST. This prevents short circuits. Use a wrench appropriate for the terminal bolt size.
* Wear safety glasses. Battery acid is corrosive.
* Have a rag handy. Battery acid can spill.
* Work in a well-ventilated area. Battery fumes are toxic.
* Don't short the terminals. Keep the wrench and any metal tools away from both terminals simultaneously.
Steps:
1. Locate the Battery: The battery is typically in the engine compartment, but its exact location might vary slightly depending on the Stratus model. Consult your owner's manual if you can't find it easily.
2. Disconnect the Terminals: Loosen and remove the nut or bolt securing the negative (-) cable to the negative terminal. Remove the cable. Repeat for the positive (+) cable. Make sure to keep the cables away from the battery terminals.
3. Remove the Battery Hold-Down: Most batteries are held in place by a clamp or bracket. You'll need to loosen this to remove the battery. The type of hold-down varies, so check how yours is secured. You may need a wrench or screwdriver.
4. Lift Out the Battery: Carefully lift the battery out of the tray. It can be heavy, so be mindful of your back.
5. Install the New Battery: Place the new battery in the tray, ensuring it's seated correctly. Make sure the terminals are facing the correct way.
6. Secure the Battery: Reattach the hold-down clamp or bracket.
7. Connect the Terminals: First connect the positive (+) cable to the positive terminal. Then, connect the negative (-) cable to the negative terminal. Tighten the nuts or bolts securely.
8. Double-Check Connections: Make sure both cables are securely fastened.
9. Start the Car: Try to start your car to make sure everything is working correctly.
Important Considerations:
* Terminal Cleaning: Before installing the new battery, consider cleaning the battery terminals with a wire brush or terminal cleaner to improve connection.
* Battery Size and Type: Ensure you purchase a replacement battery of the correct size and type for your 2003 Dodge Stratus. Your owner's manual or the old battery label will have this information.
* Disposal of Old Battery: Take your old battery to a recycling center or auto parts store for proper disposal. They often accept used batteries for recycling.
If you're uncomfortable performing this task yourself, it's best to have a qualified mechanic change your battery. They have the tools and expertise to do it safely and efficiently.