Insignia Washer Fluid Issue

Strange. I had a similar problem with my Renault Megane a while back. Washer fluid light on, but the reservoir was full. Did you check the spray jets themselves? Maybe they're clogged?

Good shout! I haven't checked the spray jets. But wouldn't clogged jets just mean a weak spray, not a complete system failure and a warning light? Could a blocked jet really trigger the low fluid warning?

You're right, blocked jets probably wouldn't cause the warning light. In my case, the issue was more complex. Eventually, I took it to a workshop. Turned out to be a faulty sensor.

Cheers for the advice! I finally got it sorted. Turns out the wiper water level was actually too low, even though it looked okay. Topped it up, cleared the error, and everything's working again. Cost me 25€ for the fluid. Lesson learned!