LeicsVrs

Pete you are correct! 5K0959704A

I thought I would write this post as it may help others who come across similar issues in the future. A day after I had cleaned my car, I locked it and noticed the little red light on the drivers door stayed illuminated upon locking the car. I tried all the doors and despite being locked, the rear passenger door opened. I noticed the red warning on the dash for a door open wasn’t illuminated and then tried the electric window, nothing worked. I thought, as I had just cleaned it out and had the rear door fully open, which is rare as no one normally sits in the back, perhaps I had stretched or broke the cables inside the black rubber sleeve. I removed the rubber, checked all the wires, all seemed fine. Disconnected the plug, sprayed some contact cleaner, and suddenly everything seemed to work again. This fix lasted a day or two. Then the same issue returned. Solid red alarm light, door not locking, no electrics on that door, no indication door was opened on dashboard. I then took the door card off, thinking it was a Dodgey cable somewhere. Spent an hour with my multimeter checking wires and plugs from the door pillar, to the big connector plug that goes to the window regulator motor. I could not find any issues with the wiring. Anyway, I worked out if I unplugged the door connector, waited a few seconds, plugged it back in, the door would lock/unlock once, then stop working. In addition Vcds was coming up with No Signal/communication, or sometimes not even reading anything for the rear right door unless I unplugged, reconnected the door and scanned quickly. So it was communicating for a few seconds when connected, but then losing connection once I either locked the car, or opened the door. I would get the red door open warning on the first open. Close the door, open it again and nothing. Stuff would work once, then stop! Strange. Having had an issue on my Mk1 where I replaced a window motor, with a faulty unit (crap part sent to me by a breaker), and this caused all sorts of central locking issues, I thought it was worth replacing the window regulator motor even though the window was fine. I knew the central locking goes through this motor unit, and has the door locking module attached. When I put a good unit on my Mk1, it fixed all the central locking issues. So replaced the window regulator motor yesterday, and everything is fixed. Door locks, unlocks, alarm arms, window goes up and down, all the auto functions work. So turns out, it must have been a failed or failure door module, on the window regulator motor. Interestingly, I replaced my current unit 1K0959703J on my 2008 with a newer unit from a 2012 1K0959703A. Same part number, different suffix at the end. I had read that it might need the J suffix on the end to work, but the replacement unit with an A Suffix worked straight away without coding. Albeit upon checking the coding, it is exactly the same as my old unit with code 0000144. So for me, a few questions answered: - It isn’t always a snapped / corroded wire or connector - The central locking system does still go through each window motor unit like the Mk1 - Replacing a window motor unit / door module didn’t need the same suffix on the part number at the end and no coding was required. It took me a few days to sort this issue, but got there in the end. I hope this write up helps someone else, as reading all the other articles on here gave me a good starting point on where to begin investigating. I’m sure as these mk2s age, there will be a fair few little issues like this arise for us all over time.