Hyundai i40 boot not opening

redcard wrote: »

Hi there,
Anyone have an issue with hyundai boot not opening? Mine is intermittently not opening I have to get in through the car into the boot to manually release it

Hi all - having taken great care to remove the switch from the tailgate, here is what I found. Find another two screws in stainless, the ones provided are near useless. Once out, leave connected to the white and black wires. The blue microswitch can be gently prized out using a small electrical screwdriver and left dangling from the wires. I think you'll find if you test the microswitch on its own, it will work, so its the mechanicals that are at fault. That then reveals the rust! The rust caused by the button return spring which has gone completely rusty. The problem isn't the switch not actuating; its the spring not releasing the switch when you let it go. Take it all to pieces by gently prizing apart with electrical screwdriver and remove the rusty spring - a great, same size replacement can be found inside a pop-out ball-point pen. Vaseline the assembly with the new spring and reassemble. If the spring is a tad too long, clip it slightly shorter with pliers. Reassemble with new screws and test extensively. I was lucky, mine worked first time. It took about an hour and saved £120 for the new switch plus another £100 for labour.

Thank you so much guys. Spot on about everything. Spring mechanism full off water and full of rust. I hope this helps so many people as it did for me. I'll attach a few pics of the parts.

The spring from a biro also did the trick of replacing old one and changed them flipping screws too that were in bits with rust!!

I found out how to take the panelling off 4 screws quite easy when you have a good look 2 in the boot handle and 2 under to plastic round caps either side ,I've taken boot lock out can't see anything broken seemed a little bit wet so we use a hair dryer on it , anyone else have any suggestions it did flatten a brand new battery anyone had this problem on the forum.

I just LOVE posts like this…. a small inexpensive spring VS a hugely expensive fix.

also, this was the screwdriver I bought to get into the screws.
https://www.amazon.co.uk/dp/B0BLZ7QG3G
<£6 and a biro is a cheap fix in my book :)

Ooh, its been a couple of years now Jon (and I have changed my car since then) but from what I remember, the plastic cover takes some prizing off. I thought I was going to break it, then it popped off, revealing the rust and water ingress. Good luck!