Saturn Ion Coolant Light Problems | It Still Runs On the Saturn Ion, as with many other General Motors cars, there is a multifunction coolant light on the dashboard. This light comes on to inform the driver of overheating or low coolant level. Coolant Level Light Troubleshooting - YouTube Click to view on Bing4:51Saturn S-series Coolant Level Light Troubleshooting Disclaimer: This video is not meant to be a definitive how toys consult a professional repair manual before starting your repair.I am notAuthor: richpin06aViews: 122K Quick fix - Coolant Light Indicator Error - Saturn Ion3 Click to view on Bing2:45By jumpers this coolant sensor, this will get the indicator works properly except "no" detection of the coolant level. Hope this could be helpful for someone for the problem before the permanentAuthor: tgmac8288Views: 87K Most Complete List For Saturn Check Engine Light Codes Saturn Check Engine Light Codes. Welcome to the Saturn Check Engine Light codes page. Below you will find the most complete list of Saturn trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there? How to Change the Coolant in a Saturn SL1 | It Still Runs Changing the coolant in your Saturn SL1 is part of the scheduled maintenance routine. Depending on how much you drive the car, the SL1 should have the coolant replaced every two to three years for optimal performance. Although it's a messy job, you can save a lot of money on labor by doing it yourself.