Insignia Terminal 30 Electrical Fault

I had a similar problem with my Insignia – it's definitely a similar model. 'Terminal 30 continuous plus interrupted' sounds like a power supply issue, possibly related to the ignition switch or something draining the battery when the car is off. Have you tried disconnecting the battery overnight to see if that helps? If it starts fine after that, it's almost certainly a parasitic draw. If not, your battery may need replacing. I'd start by checking the easy stuff.

Thanks for the reply! Disconnecting the battery overnight is a good idea. When you had the issue, did the 'Terminal 30' error specifically point to the ignition switch, or was it something else entirely? Also, did you notice any other weird electrical symptoms, like lights flickering?

Honestly, I didn't get that technical with it. I saw the same error message, the battery kept dying, and I tried a couple of simple things without success. In the end, I just took it to the workshop. They sorted it out pretty quickly and it wasn't a huge bill. If you're not comfortable tracing electrical faults, I'd recommend doing the same. It could save you a lot of time and frustration!

Thanks for the advice, I think you're right. I've done some more poking around and I'm getting nowhere fast. Looks like a trip to the workshop is on the cards. They quoted me 290€ to fix it; the battery was heavily discharged and defective. I'll post the resolution here once it's sorted.