Hi,

First post, hello everyone.

I have a 2001 (to 2005 model)? A4. Central Locking stopped working but would work again after a long drive. This went on for a while until it stopped working altogether over a period of months. If i disconnect the battery it appears to reset the unit and the central locking will work again for a few days then stops working again. Will only come back if i reset the unit. To top this off my car has started running flat if I don't drive it every day now, I've a new battery but still no signigicant improvement. Had a guy look at the central locking(convenience unit) and it was dry. The car when off is draining 9 amps(or ohms or something?) from the battery and when the unit is removed the car is draining 3. It appears to be all connected to this unit but if i replace this is their any guarantee that it isnt something linked to this unit as opposed to the unit itself? Is it a big job to recode the car to a new unit?Electric windows, interior lights etc. all work fine and never had a problem there.

Any ideas anyone? Help would be appreciated.


Edit: sorry, forget to mention I always felt not being able to lock the car caused units to stay alive inside and may have been contributing to the discharge. But I think Ive had it locked a few times and it has still discharged, might have been just after jump starting the car so maybe the battery wouldn't have been suitably recharged. I'm not so sure now, it's been so on/off I'm not sure what days it's done what. I'll leave it locked tonight as the locking will work when i disconnect the battery, reconnect and leave it locked for the night, see what happens.