2. Look for any loose or corroded connections in your car's electrical system. Clean or tighten any loose connections.
3. Check your car's starter motor. If the starter motor is not working correctly, it can drain your battery.
4. Check your car's ignition switch. If the ignition switch is not working correctly, it can also drain your battery.
5. You may have a parasitic drain on your battery. This means something in your car is drawing power even when the car is turned off. To find a parasitic draw, you can disconnect the negative battery cable and connect a multimeter between the cable and the battery terminal. If the multimeter reads a current draw, you have a parasitic drain. You can then start pulling fuses one by one until the current draw stops. This will tell you which circuit has the parasitic drain.
