I recently purchased a used 2021 Laguna Smartshop 2 SUV with a Syntec controller. I feel like maybe the lubricant pump is not working, the gauge is always at 0, and I can't really feel any vibration at the pump. There is oil in the reservoir and in the lines, but there are also some air bubbles further up the lines.

I assume the gauge should have some reading, does anyone know what a nominal reading would be? The random manuals and documentation I can find are severely lacking. Does it only turn on intermittently, and if so does the gauge only have a reading while it is on?

I just need some way to verify it works or doesn't work prior to replacing it. At this point I'm leaning towards that it isn't working.