Hazard light and interior lights problem on 2001 A3

CHECK THE ECU IT SI LOCATED AT THE RIGHT SIDE OF THE BOOT UNDER THE CARPET.THERE MIGHT BE WATER INSERTION!!CHECK AND LET ME KNOW

it needs to be programmed at the dealer to do this, has to be done through their handheld tool

Need to know the car you have

hi jamie,to reset the system,unlock the door/hold key over(windows will go down),then lock/hold key over(windows will go up/sunroof will close)then press unlock button on remote for 30 secs,RESET DONE.(if this dont work renew the battery in remote/reset again).geoff.

I'm having the same problem have you fixed yours?

some of these need a dealer to hook up the computer to turn this function back on. im thinking thats where you stand now.

The horn chirp can be disable by pressing the lock and unlock buttons simultaneously until the hazard lights flash, and no enable press the lock and unlock until the horn chirp.
To reprogram (enter new ID) key fob (keyless remote controller) follow the steps.
1. Close all doors and lock all doors
2. Insert and remove the key from the ignition key cylinder more than six times within 10 seconds. (The hazard warning lamp will then flash.) NOTE: Key should be withdrawn from ignition key cylinder completely each time.
NOTE: Do not rush the insertion/removal key cycling process. The side marker/tail/license lamps and interior illumination will flash twice when this step is accurately completed.
3. Insert key on ignition key cylinder and turn ignition key switch to "AAC" position At this time, the new ID code is entered and original (previous) ID codes are erase.
4. Press any button on the new remote controller once. (The hazard warning lamp will then flash)
NOTE: Do not press the button more than one time in the above step. If the button is pressed more than one time, the programming procedure will not be successful. The side marker/tail/license lamps and interior illumination will flash twice when this step is accurately completed and programming is successful.
If there is only one remote controller skip step 5.
5. Additional ID code entry Release the door lock, then lock again with door lock/unlock switch (In power window main switch)
6. Remove key from ignition
7. Unlock driver side door, open driver side door and then close the door. (END)

Faulthy sensor or a relay, try to reset, by dis/re-connecting the ground cable from the battery, remove the ground cable ( - not the +) wait 1 minute reconnect the ground cable.

a hazard fuse is big and round mainly silver in color usually under the steering wheel or in the glove-box or on the side of the dash when you open the door

you may have had a bad connection at the battery that would cause this kind of problem