2004 Audi A3 power windows and central locking have stopped working, are these on the same fuse!!!

Fuse box cover should tell you. There sy also be an inline fuse behind the radio. If you can't find a fuse in the fuse box you may have to remove the radio and follow the red power line back to the chassis harness...fuse on the way.

Probable fuse blown.

Pull the switch panel and verify you have power to the panel first.

multifunction / central locking control unit could cause this problem. located under carpet in left front foot well. [RHD vehicle]. check for water ingress into foot well.

On some cars you can unlock the door twice and this will release the petrol cap - otherwise you could check for a loose conection somewhere in the fuse box.

will your passenger door open with the key and is it just one side that your windows are not working or both. if its just one side it might be your regulator motor in the door thats not working if its both it might be your central locking pump usually in the boot. however if both of them are working fine it could be that your key needs reprogrammed however i think the 1st 2 are more likely to be the problem.

I just saw your posting. Yes, It could be a fuse, a 10amp interior light fuse BUT... I had to replace the Central Locking Control module which toasted first... I had the 3 open door, no working lights/windows situation too...

The problem seems to be in the main cabin light which has the 3 way rocker switch. Turn this off (depress the side on the driver side of the car (US)). Check the 10 amp fuse for the interior light. If it is burnt, you are OK if its not, you need to replace the Central Locking module. ~$200 US

I still have not replaced the cabin light module where I think a short is. If I replace the fuse in question, and turn the cabin light on, it "pulses" for a few minutes and then cooks the fuse.

I've been dealing with similar problems (windows and sunroof dead, power locks iffy, dome light doesn't work, random chiming) and best I can figure is:

a) get rid of the leak and any standing water
b) depending on the year of your car check the relays and/or central locking module

I spent a lot of time checking the ECU and door interior parts and those were both dead ends. I also thought the standing water on the floor might be shorting actual wiring, but now I've eliminated that as well. Although my alarm hasn't been going off, the "door chime" has and the instrument cluster sometimes shows 3 or 4 doors open while driving. VAG-COM showed some alarm trip type faults as well. Central locking is my next move when I've got some time.

you have a problem with one of your door locks,get the car code checked,go into central conv and check for a code,let me have the code and i may be able to help you

sounds like a blown fuse