Doors lock but don't beep.

[Linor22]

I tried searching and everything I find is a slightly different situation.

At first the passenger front door didn't lock so I checked the wires between the passenger front door and there was 2 wires broken which I fixed and now all doors lock but still no beep.

I checked the wires between the driver door and none look broken or anything and all 4 doors lock.

The light on the door blinks and if I hit the panic button on the remote the alarm goes off.

Is there anything else that I can check so I could get the beep when I lock the doors?

[SaabtoAudi]

Your siren is probably busted. Common problem with b6's. It's in the back right hand side in the trunk. Depends on sedan or wagon, but both back right side in trunk. Just easier to get to in a sedan. The batteries corrode and ruin the board underneath them.

[coowhip]

Yup, alarm horn is busted. Several models of A4 including VW using a compatible horn. I got mine from a j-yard for $30 shipped and it worked great. Had to clear the code on the controller for it to start working again with VCDS.

[rollerton]

If his alarm works when set off then it's probably not the module. Your car thinks a door / trunk / hood is open.
With key in ign, switched on, open doors one at a time and see if the door, courtesy, dome, puddle lights come on with each respective door.
Check the display to see if it indicates a door/ trunk/hood being opened / closed.
I'll take door latch for $300 Alex.

[coowhip]

^oh snap, thats what I get for not reading the whole post. lol Take out the entire door harness, you will find more broken wires I bet. Also need to clear the codes on the controller.

[SaabtoAudi]

^oh snap, thats what I get for not reading the whole post. lol Take out the entire door harness, you will find more broken wires I bet. Also need to clear the codes on the controller.

What he said, guess I didn't read it all either... Woops

[coowhip]

Also to note, I saw one broken wire and when I pulled the whole harness out I had 5.

[rubbercement]

i had a similar problem, turned out just to be a fuse. i think it was #24.

[Linor22]

With key in ign, switched on, open doors one at a time and see if the door, courtesy, dome, puddle lights come on with each respective door.
Check the display to see if it indicates a door/ trunk/hood being opened / closed.
I'll take door latch for $300 Alex.

Just tried this and right rear door doesn't turn on lights nor show on cluster... Every other door does.

[Linor22]

i had a similar problem, turned out just to be a fuse. i think it was #24.

Checked the fuse and it was good.

[Waspjr]

Must be a trigger or sense wire for that door. Also just a quick test put the key in the ignition turn in on but not start and press the unlock button then turn key off and pull it out get out of vehicle and close door and try the lock button. Butits probably in the latch wireing on that right rear like ^^ buddy said trunk hood or door latch not made


Sent from my iPhone using Tapatalk

[Linor22]

I checked the wiring and it's in tact. There was a bad connection of the harness to the door latch which I made sure it was clipped in properly.

Now the door lights come on and show on cluster that door is open which it didn't before. I also made sure all door and trunk showed up on cluster and they do but I still don't get a beep when I lock the car.

Could it possibly still be the door latch? Or could it be the door lock beep notification was disabled thru vag com or is that not even possible?

[Quattro kev]

That really sounds like the siren in the RR of the trunk compartment i'm in the process of dealing with that right now, do you have a h12 fault in the comfort module ?

[Linor22]

That really sounds like the siren in the RR of the trunk compartment i'm in the process of dealing with that right now, do you have a h12 fault in the comfort module ?

I don't have vag com to run to see if there is any codes present.

The alarm siren does go off if you hit the panic button which is what leads me to believe that the siren is good.

[Quattro kev]

Very easy to check it. My problem or at least right now isn't the module. My 3 pin connector shorted causing #1 pin and terminal to be burned. The pin on the module turned out to be ok ( for now, waiting on connector from dealer) Cost me 22 dollars for that 3 pin connector and wires, then ill just splice with some sort of but connector and heat shrink. If your connector is fine, and fuses are good you can check power at the connector. Chances are your siren is bad. I've head stories of seeing the battery corrosion come out of the casing by the connector so, it could be very apparent or it may not. It's in the right rear trunk under the taillight go take a look.

[Quattro kev]

Oh and if it turns out to be the siren it almost certainly threw a fault in the comf module so that will have to be cleared after the new/used on will be installed.

[diagnosticator]

I don't know how it could have changed without intervention with VCDS, but there is a convenience control module coding value option to control the lights flashing and the alarm beep that occurs with locking and unlocking the car, turning those options on or off. Also the beep won't happen if any of the locks can't function or a door switch is indicating an unclosed door, trunk or hood. or something else is interfering with the alarm from arming during lock up.

[Linor22]

I Also the beep won't happen if any of the locks can't function or a door switch is indicating an unclosed door, trunk or hood. or something else is interfering with the alarm from arming during lock up.

I checked all doors and trunk and they show closed or open etc on cluster... Does the hood have a similar switch to sense it's open and show on cluster?

[Linor22]

Oh and if it turns out to be the siren it almost certainly threw a fault in the comf module so that will have to be cleared after the new/used on will be installed.

If it was the siren would the "panic" option still sound off?

I tried changing the siren with one I got online and it doesn't beep either only when panic button is pressed the siren goes off.

[diagnosticator]

I checked all doors and trunk and they show closed or open etc on cluster... Does the hood have a similar switch to sense it's open and show on cluster?

Yes there is a hood switch, but IIRC no cluster icon display. All the doors and hood and trunk have switches to indicate open/closed to the Convenience Control Module. The alarm function and the beep and are also functions of the CCM. The instrument cluster does not have anything to do with these functions. It only indicates door open closed. With VCDS go into the CCM measuring blocks, and you can see all of the door/hood switches as open or closed. The measuring blocks will show either an OPEN or Closed, or a 1 for closed and a 0 for open. Locked and Unlocked status is shown also. You can watch the status change as you operate the remote to lock and unlock the car, and open and close the doors and hood/trunk lids.

You need to have VCDS to do the above.

[diagnosticator]

No. If the siren works, then something else is causing the beep to fail. Coding or alarm not ready/not armed status after locking the car. BTW Comfort = Convenience module. Does the LED in the driver's door flash after locking the doors? It should blink fast for a few seconds then blink slowly if the locks and alarm system are all locked, armed.

[Linor22]

No. If the siren works, then something else is causing the beep to fail. Coding or alarm not ready/not armed status after locking the car. BTW Comfort = Convenience module. Does the LED in the driver's door flash after locking the doors? It should blink fast for a few seconds then blink slowly if the locks and alarm system are all locked, armed.

Yes it flashes fast for a bit then flashes Slowly after.

[diagnosticator]

Yes it flashes fast for a bit then flashes Slowly after.

Then maybe the module coding has been changed somehow. The panic feature does not have any relation to the alarm status. You could test the alarm function with the doors locked and the LED blinking slowly. With the HOOD down but unlatched, with the car locked, and the alarm armed, slow LED blink, open the hood, the alarm siren should sound off. However, thinking again, the LED should not blink slowly with the hood unlatched, not closed all the way.

[Linor22]

Then maybe the module coding has been changed somehow.

I will try to get vag com and see if anything shows up.

Thanks for your help.

[Quattro kev]

If it was the siren would the "panic" option still sound off?

I tried changing the siren with one I got online and it doesn't beep either only when panic button is pressed the siren goes off.

You think it wouldn't but somehow mine would... Very faint though.. I may of had enough of a connection to power the siren but not enough to be loud. Also the siren does not have specific coding.

[Quattro kev]

It is possible you purchased a bad part. Module coding could have been changed in the comfort module people do it all the time with their vag com hard to say what your problem is when so many things play a factor, I would suggest buying a vag com. I think most other hand held scanners can only read the engine faults. They are very useful to data log info even save your codes and post them here much easier to help. If you plan on keeping your audi I would say it's a must own tool.

[diagnosticator]

You think it wouldn't but somehow mine would... Very faint though.. I may of had enough of a connection to power the siren but not enough to be loud. Also the siren does not have specific coding.

The siren doesn't have any specific coding for function options, but the CCM does for the locked beep or not and the corner lights blink or not.

[Quattro kev]

The siren doesn't have any specific coding for function options, but the CCM does for the locked beep or not and the corner lights blink or not.

Agree... I said above somone could have changed coding in the comfort module