Fuel Filler Door Lock on Pre-FL Estate

Hello Folks,

The locking solenoid on the fuel filler door is starting to play up, whereby it doesnt always unlock on the first press of the key fob. In the first instance I've lubricated the mechanism to see if that helps, however i know that on the Mk7 Golf Platform these things are notorious for failing so I'm looking at sourcing the replacement/updated part.

The only thing is I've read differing reports on how easy it is to replace the part. Some seem suggest its just a case of removing a torx screw and everything thereafter can be done from outside of the vehicle in about 5 minutes. I've seen others saying that the boot carpet needs lifting to detach the wiring harness, while others have said that the rear offside wheel needs removing along with the wheel arch liner to gain access to it (in which case i might just let my mechanic sort it).

I was just wondering if anyone had done it on a pre-FL (MY14) estate version of the Mk3 and could advise as to which of these three scenarios is involved.

Cheers