Evening all, whilst working through the issues with my sons 2012 Polo, one of the issues is an intermittent (became constant) boot switch/latch thing.

I have a lock mechanism in stock so I brought that home to swap it out and hopefully sort the problem, however it’s never that simple is it.

So I’ll give the short story, a load of messing about about has made me realise that when the Brown multi plug is connected, the system works perfectly, as soon as I connect the black, it becomes into again and the boot latch won’t work. This is still the case if I disconnect the plug from the wiper motor.

What do you think would cause this? Time is against me with most jobs so if I can gain some insight I’d be very much appreciative

See images for info

Ta

Well, I managed to fix it, not entirely sure how!

I could not get sensible readings with a multimeter, it kept changing

Eventually I stripped out the insulation to the cable between the boot hatch and the body, although I could not actually find the issue, I seek to have sorted it.