[dougjulien]

Greetings from Poland.

My 2008 i30 has an ongoing issue with the hatchback, which I think is due to an electrical connection problem. The hatch often will not open, and when this is the case, the rear wiper will also not work. Occasionally I'll go over a speed bump and the rear wiper will suddenly start working. As long as the rear wiper is working, the hatch will open.

I notice that when I do get the hatch open, the interior light in the trunk/boot will flicker while I'm closing it. I notice that if the light is on, I can hear the opening mechanism when I push the button to open it, and the wiper works. If the light is off, neither of these work.

I'm trying to figure out where the loose connector is, as I assume this is the problem, an how to access it so that I can try to fix it.

Sorry for my poor explanation. Any hints here?

   

[The Gonz]

Hello and welcome.
I agree it looks like a loose connection. Bear in mind that it may not always be the 12V supply. It can also be a poor connection to the body as the return path for the circuit.

[dougjulien]

Thank you. Any ideas where I should start to find the problem spot and try to fix it?

[The Gonz]

Do you have a multimeter or at least a lamp-based probe?

[dougjulien]

I don't think so. I'm sure I could get one, but I'm equally sure that I would have no idea what to do with it. 🙁

[The Gonz]

I don't think so. I'm sure I could get one, but I'm equally sure that I would have no idea what to do with it. 🙁

Take the car to an auto electrician.