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Model specific boards => Golf mk4 => Topic started by: Ant1981 on 09 July 2011, 09:51

Title: Door lock module repair - wish me luck boys!
Post by: Ant1981 on 09 July 2011, 09:51
Whipping off my door card and panel, I'll attempt fixing that pesky door module!
Title: Re: wish me luck boys!
Post by: Dave_IOW on 09 July 2011, 10:44
:afro:
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 10:58
Bollocks, it's proper pissing down now, so I've had to hold off right before I worked out how to get the panel off that hold the window regulator in place. I think, lower the window until I see two torx bolts through the rubber holes, then tape the window up to the door and undo the bolts.

All in all, looks pretty easy. So if my soldering fix doesn't work, then I can get a new module and fit it in the week.
Title: Re: wish me luck boys!
Post by: jnufcuk on 09 July 2011, 11:08
Good luck mate. Bloody pissing down isn't it lol. Where abouts in herts u live?
Title: Re: wish me luck boys!
Post by: Dave_IOW on 09 July 2011, 11:30
Bright sunshine here   :grin:
Title: Re: wish me luck boys!
Post by: daz veedub on 09 July 2011, 11:40
suns just peeking through here nows ma chance to give her a full hit  :cool:

good luck ant  :smiley:
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 11:44
sh!t. The torx that holds the module in the door has more torx points than a standard T40. Wonder if halfords do them? Or screwfix?
Title: Re: wish me luck boys!
Post by: richw911 on 09 July 2011, 11:48
Your gonna need it  :laugh: :laugh: :laugh:

Keep us updated  :smiley:
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 12:23
Spline set! Got some!
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 13:09
Checking the guides, but can't work out how you remove the door module from the external handle and lock barrel.
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 13:51
It's all off.

I can see dodgy solder joints!
Title: Re: wish me luck boys!
Post by: benmanc on 09 July 2011, 16:16
Nice, im going to attempt this tomorrow, im hoping its only a bit of soldering needed too.  Knowing my luck will need to get new module
Title: Re: wish me luck boys!
Post by: mattkh on 09 July 2011, 16:49
I can see dodgy solder joints!
Hi
Please put up a picture.
Title: Re: wish me luck boys!
Post by: richw911 on 09 July 2011, 16:51
It's all off.

I can see dodgy solder joints!

Great stuff  :smiley:
Title: Re: wish me luck boys!
Post by: Dave_IOW on 09 July 2011, 17:15
Yeah pics would be handy for the other 23547235 members with dodgy stupid door modules i reckon.

Whats the point of computers inside doors  :angry:
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 17:50
Well after much work, the problem is a micro switch.

Electrically, it's a very simple module. It really is nothing more than microswitches and a small motor, that's it.

Some solder joints were dodgy and were re-soldered, the micro switch I cut out, to get me out of trouble for now. The switch says the door is open when the contacts are closed, so cutting it out will stop the contsant 'beep drivers door open' and the fuel pump from priming 100 times a day.

Just chucking it back together, reckon I'll leave the door card off as when I put it on I couldn't open the door from inside as for some reason there's some slack on the steel cable that goes to the mechanics of the lock. Pulling the end of the cable opens the door, but I have to pull it further.

Don't know if I can get this actual micro switch that will fit properly, so I may well have to just get a new module, but was worth a try.
Title: Re: wish me luck boys!
Post by: rio_gti on 09 July 2011, 18:26
Well great attempt hope ya get it sorted, just a q thou, what were the symptoms for you doing this?? Was it cos the door always appeard open??
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 18:27
I've got tons of photos too. But I can't really do a write up as it wasn't a job put to bed, although I did identify the issue.

I feel absolutely shattered now. Chucking it down outside.

Time for a beer  :smiley:
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 18:30
Well great attempt hope ya get it sorted, just a q thou, what were the symptoms for you doing this?? Was it cos the door always appeard open??

It began with the interior lights only sometimes coming on when the door was open, the car locking itself after I've opened the door (dodgy ground if you're not in there but your keys are).

Then it finally got worse as the door was electrically always open, which meant I couldn't use the key fob to lock, the alarm would go off if for some reason the switch became unstuck.

Very annoying as the dash was always bleeping at me about the door being open, really hacked me off. My passengers would ask what the hell that bleeping alarm was as it was doing their nut in too.

So now with the switch cut out, there's no more bleepy bleepy or alarm going off, I can use the keyfob now, BUT I must keep the key with me, as the car will not know that I've opened the door, so unless I engage the ignition, it'll lock the doors.
Title: Re: wish me luck boys!
Post by: Ant1981 on 09 July 2011, 19:11
I've got an idea.

I'll have a go at saving the moola, by getting a micro switch from RS and I'll make it fit. It'll work alright, but I'll either alraldite it in place or use some M2 bolts. Sod paying £120 for a module, which is what VW quoted me last week. Only reason I never got one, is I have to order it as they don't keep it, but I never managed to order it as they won't place orders over the phone.

Once that's done, I'll have a write up for you chaps that the mods can sticky if they like it.
Title: Re: wish me luck boys!
Post by: richw911 on 09 July 2011, 21:01
I've got an idea.

I'll have a go at saving the moola, by getting a micro switch from RS and I'll make it fit. It'll work alright, but I'll either alraldite it in place or use some M2 bolts. Sod paying £120 for a module, which is what VW quoted me last week. Only reason I never got one, is I have to order it as they don't keep it, but I never managed to order it as they won't place orders over the phone.

Once that's done, I'll have a write up for you chaps that the mods can sticky if they like it.

Sounds like a good idea to me  :smiley:
Title: Re: wish me luck boys!
Post by: Ant1981 on 10 July 2011, 10:21
Something like that.......

(http://img-europe.electrocomponents.com/largeimages/R1571014-01.jpg)



here's the buggered one....

(http://farm7.static.flickr.com/6123/5921148691_9b3885031e.jpg) (http://www.flickr.com/photos/63848186@N05/5921148691/)
Title: Re: wish me luck boys!
Post by: Rhyso on 10 July 2011, 11:15
First impression is that looked a bit like a Claymore mine  :laugh: :laugh:

Good effort; lets hope it works!  :smiley:
Title: Re: wish me luck boys!
Post by: mattkh on 10 July 2011, 17:16
........ so cutting it out will stop....the fuel pump from priming 100 times a day.
Hi
Is that really true ?
Title: Re: wish me luck boys!
Post by: Ant1981 on 10 July 2011, 17:24
........ so cutting it out will stop....the fuel pump from priming 100 times a day.
Hi
Is that really true ?

Yes, as with the switch cut out, then there is no sticky switch.

The door is registered as open if the switch contacts are closed. My switch was mostly stuck closed, telling the car that the door is open, with intermittent opening of the contacts.

So cutting the switch out leaves the door 'closed', until I source a switch.

I think I may need to revisit the door module, as I'm uncertain about wheather or not it's put back together properly, as now the alarm doesn't set and if I press lock, then lock again, the drivers door unlocks. So I may have jiggled the mechanics of the module about to make or not make another microswitch activate or deactivate properly.

It's alot of messing about, I must admit, in an attempt to save £120, but it's given me a real insight into how this all works.
Title: Re: Door lock module repair - wish me luck boys!
Post by: Ant1981 on 11 July 2011, 10:53
Here's my old Burgess microswitch....

(http://farm7.static.flickr.com/6018/5925320747_9172bd6308.jpg) (http://www.flickr.com/photos/63848186@N05/5925320747/)

the top and the bottom can be seperated

(http://farm7.static.flickr.com/6146/5925319987_f512939320.jpg) (http://www.flickr.com/photos/63848186@N05/5925319987/)

Here's a new Burgess microswitch

(http://img-europe.electrocomponents.com/images/R1571020-01.jpg)
http://uk.rs-online.com/web/p/micro-switches/1571020/ (http://uk.rs-online.com/web/p/micro-switches/1571020/)

which I'm going to seperate to use the new top with the old bottom, as the bottom part of the switch works perfectly, it's only the old top plunger that has worn.

Now, before I go any further, I really need to see if I can find out what exactly the other four microswitches inside the module do, as it's only since taking it apart that my alarm doesn't set and the door unlocks if I press lock a second time.
Title: Re: Door lock module repair - wish me luck boys!
Post by: mattkh on 11 July 2011, 13:07
..... it's only the old top plunger that has worn.
Hi
I am most grateful to you for the photos.
Can you not 'build up' the plunger with some resin/epoxy ?
Title: Re: Door lock module repair - wish me luck boys!
Post by: shedpainter on 11 July 2011, 20:09
I've been following this thread because I think I've got a bit of bother with the module on mine. Had a search and found this link that might be useful................

http://www.scribd.com/doc/56214783/2/Control-units

How you gettin' on? Any more pics?
Title: Re: Door lock module repair - wish me luck boys!
Post by: Ant1981 on 11 July 2011, 20:18
I've been following this thread because I think I've got a bit of bother with the module on mine. Had a search and found this link that might be useful................

http://www.scribd.com/doc/56214783/2/Control-units

How you gettin' on? Any more pics?

Excellent find.

I've ordered my switch, hopefully at the weekend I'll do some more. I'll take the module apart again and see if I can jiggle things around and get it to work how it did before.