JimS8 Posted September 27, 2009 Report Share Posted September 27, 2009 Central locking on my 2001 S8 seems to have has packed up, and I can't get into the car. Using the key in the driver's door doesn't do anything. I can get into the boot and the battery is charged up. Can anyone help please? Link to comment Share on other sites More sharing options...
roberto1954 Posted September 27, 2009 Report Share Posted September 27, 2009 obviously you tried your remote batterys if you can get in the boot disconnect your battery earth lead keep the boot lid up and reconect in 10 mins let me know what happens Link to comment Share on other sites More sharing options...
JimS8 Posted September 27, 2009 Author Report Share Posted September 27, 2009 Thanks, but it's still the same after trying that. Unfortunately the root cause is electronic and, though i hate to admit it, my own fault - I managed to enter the wrong code in VAG-Com when trying to change the locking settings. I only realised the error after I had relocked the car and nothing would work. Very stupid. From researches on here and on Audiworld forums I get the impression that I'm going to have to find a good locksmith or maybe get the windscreen taken out, but if anyone knows of a better solution that would be much appreciated. Link to comment Share on other sites More sharing options...
roberto1954 Posted September 27, 2009 Report Share Posted September 27, 2009 (edited) interesting...does it have a real keyhole in the front doors? surely the key inserted into the lock should work just to let you in it would work if your battery was flat . this is only a mechanical lock . somebody must know more...come on guys . go to audi technical forum petroldave seems clued up Edited September 27, 2009 by roberto1954 Link to comment Share on other sites More sharing options...
PsYcHe Posted September 27, 2009 Report Share Posted September 27, 2009 Strange as the lock worked with the key on mine when the battery was flat and the central locking didn't work. I wonder if someone has broken the lock at some point too. The central locking pump is in the boot (I think on the left hand side). You could maybe see if you can force it to run. Link to comment Share on other sites More sharing options...
JimS8 Posted September 27, 2009 Author Report Share Posted September 27, 2009 There is a key hole only in the driver's door. It will turn 45 degrees in either direction but doesn't seem to have any mechanical connection to anything. Presumably it operates as a switch when things are working properly. I don't know whether it might have got broken in the past, but it's always been like that since I have had the car. Link to comment Share on other sites More sharing options...
roberto1954 Posted September 27, 2009 Report Share Posted September 27, 2009 i think thats broken it should be mechanical as its designed to unlock a car with flat battery.. Link to comment Share on other sites More sharing options...
JimS8 Posted September 27, 2009 Author Report Share Posted September 27, 2009 Unfortunately it's too late to fix it now! Link to comment Share on other sites More sharing options...
PsYcHe Posted September 27, 2009 Report Share Posted September 27, 2009 I'd look at running some power to the CL pump in the boot to make it pop the doors open before going as far as getting a locksmith or replacing the windscreen. Link to comment Share on other sites More sharing options...
JimS8 Posted September 28, 2009 Author Report Share Posted September 28, 2009 Trying to get a current to the central locking pump sounds a good idea, but does anyone know what I would need to connect to what in order to get the desired result? I am rather wary of trial and error in case I end up doing more damage e.g. burning out the pump or blowing a fuse that I can't get at. Another thought - would it be as simple as detaching a rubber pipe from the centra locking pump and blowing some air down it, or are the valves that convey air pressure to the door locks in the doors themselves? Link to comment Share on other sites More sharing options...
roberto1954 Posted September 28, 2009 Report Share Posted September 28, 2009 think u mite need a bit more psi than blowing do you have a compressor? were do you live? my mates an auto electrician Link to comment Share on other sites More sharing options...
PsYcHe Posted September 28, 2009 Report Share Posted September 28, 2009 Not sure about the pump pinouts, but I'd imagine that you need a bit more than lung pressure to pop the locks, but give it a go Link to comment Share on other sites More sharing options...
chris1roll Posted September 29, 2009 Report Share Posted September 29, 2009 Hi, Don't know whether my last post here: http://www.tyresmoke.net/forum/audi-a8-s8/119189-1995-keys-immobiliser-locks-etc.html might help you trip the central locking pump? You would need to connect the Brown/Red wire going into the black plug on the vacuum pump to earth.... Of course yours is much newer and might be different, and even though you are only flashing to ground, please don't blame me if you fry anything! Link to comment Share on other sites More sharing options...
JimS8 Posted September 30, 2009 Author Report Share Posted September 30, 2009 I thought I would check again whether the central locking pump was actually working as I thought I had heard it when I opened the boot at the weekend. Sure enough, when I reconnected the battery, I found that the pump made its usual groan when I turned the key in the boot lid, but only once. If I tried to lock or unlock it a second time, nothing happened. So I tried the key in the driver's door again. Nothing seemed to happen until I disconnected and reconnected the battery again when to my huge relief, the doors unlocked! I'm not sure of the precise sequence of events, or why this happened, but the main thing is that it is that everything's now correctly coded up and running again! Things would of course have been much easier if I could have unlocked the door mechanically with the key in the first place. Thinking back, I am wondering whether the mechanism may have been disturbed when I had the driver's window replaced a few years ago after someone tried to break in using a brick (without much effect apart from scratches on the glass). Thank you all for your very helpful comments. Link to comment Share on other sites More sharing options...
PsYcHe Posted September 30, 2009 Report Share Posted September 30, 2009 Very likely that the mechanism was disturbed when someone was in the door fiddling. Pop the door card off and check.. Link to comment Share on other sites More sharing options...
cruiser647 Posted September 30, 2009 Report Share Posted September 30, 2009 Or it took that long for the codes to re-synchronise between key and controller??? (keys get de-synched as if you were pushing the key out of range of the controller - ie sitting on them). Once unlocked and in using the key, the thing can re-synch. Link to comment Share on other sites More sharing options...
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