Why does my Audi A5 keep showing a low coolant warning?

I recently noticed that the low coolant warning keeps appearing on my Audi A5, even though there are no visible leaks or issues with the engine temperature. What could be causing this warning and what steps can I take to fix it?

The low coolant warning can be triggered by a faulty sensor. It's a relatively common issue in Audi A5s, so it's worth getting it checked by a mechanic to pinpoint the exact problem and replace the sensor if needed.