You need an ignition switch..Very common for these cars. If you hooked up a scan tool it would read codes b12960 and b3033. The switch has moisture in it and requires replacing and relearning the security I own a 2003 Ion, when the car will not start, wait 10-15 minutes, and it will start. I have ben going through this for some time now, it has worked every time. Once it does it , it won't do it for some time, then it will happen again.
Remove battery cover and connect charger to side post battery.
The battery that fits in a 2003 Saturn L300 is 10 and 3/4 inches in length. The width of the battery is 6 and 7/8 inches and the height is 7 and 1/4 inches. The battery needs to be a 12 volt battery that is a side post battery.
In the trunk by the right tail light.
in the trunk on the right side near the spare, if you need to jump start the car, there is a post in the front engine compartment that easily lets you connect your wires to it.
There is a relay inside the fuse box that is adjacent to the battery.
its the red one conected to the positive terminal
it is behind the left head lamp hooked to the battery
There is a fuse box under the hood, next to the battery. The fan relay is in there.
In the 2003 Saturn Ion, the battery feed fuse is typically located in the under-hood fuse box. It is usually labeled as "BAT" or "Battery" and is often a larger amp fuse, such as 40A or 30A, depending on the specific configuration. Always refer to the owner's manual for the exact fuse location and specifications for your vehicle.
When you open the hood, there's a black rectangular box about the width of a battery. This is just a protection cover. Remove the 3 screws, lift the cover and you will see the battery.
The battery seems to be a problem on this vehicle. A recharge could fix the issue but a new battery may be necessary.
The 2003 Saturn Ion typically uses a Group 75 battery. It's important to ensure that the battery meets the vehicle's specifications for size and power requirements. Always refer to the owner's manual or consult with an automotive professional for the best fit and performance.