Any easy way to disable 996 alarm without having issues?

Car seems to want to go off at around 2AM in the morning. I know there is an issue because the car honks when I lock it...indication of a trigger that has failed in the hood, trunk, or center console. How can I disable the alarm and keep the car locked until I get it scanned for what trigger has failed? Yes, I have an aftermarket stereo...about 6 months ago was installed, the alarm problem started last month so do not think that is what is setting it off. I have searched the forum and just seen you need to get it scanned by Porsche to see what code is pulled up from the scanner to pinpoint the faulty trigger. Looking for advice. Car is unlocked in the garage but need to lock it at work.

Also, am looking at getting an aftermarket alarm if this thing costs too much to fix the OEM one at the dealer. Anyone with aftermarket alarms have any input? Might be cheaper for me to just get a Clifford or Alpine with more functions than my 2000 OEM alarm than to waste the money at the dealer fixing this one. Suggestions and input are appreciated.

When you press the FOB to lock the car does it beep once? If so then you have an open door, trunk, frunk, center console, or radio sensor fault. If it double beeps then you have a motion sensor fault. It does not beep then try press the key fob twice to get a double beep. That will turn off the interior alarm. Ses if that helps.

+1 ^^^^ do not put after-market.... I would trouble shoot the limit switches of the hood, deck lid and the center console....

I would still check the aftermarket radio install. There is a wire that connects to the chassis I believe that needs to be taped. I have an aftermarket Alpine installed in mine and I get the single beep (indicating no radio). My alarm would go off by itself randomly, but hasn't done it for about a year now.

Horn beeps once, I would say 70% of the time. I know that is telling me there is an issue with one of the triggers. Right now I leave it unlocked in my garage. Still bugs me as I do not want the battery to die if the alarm goes off at work. I know it will cycle through 5 rotations and then stop. Also, had the aftermarket Kenwood installed for almost a year. Never had an issue till now, that is why I think it is a trigger problem.

Isn't it lock twice quick disables the alarm? If you have a center console glove box it is also one of the alarm points so make sure it snapped down tight. The engine lid can sure look closed but just resting as heavy as it is without being latched. Another thing is the IR sensors mounted on the dash could be detecting something like a cat walking on the windshield if you have one of those rodents I mean cute kittys.

You need to look around the radio area for a loose wire. I would bet the radio wire has come dislodge from where the installer tucked it away. You should be able to remove the side panels and find it.

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Check the wire first on the radio. Mine does the same thing.

Until you find the issue, lock the car then unlock the car and the car will automatically lock itself after 30sec or so as long as you do not open the door... that way you can have the car locked at work without the alarm going off.. I have to do the same thing as mine goes off every time the interior heats up... and still does after replacing the interior temp switches. The dealer has about given up and the warranty expires in about 1.5k miles!

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THANK YOU SO MUCH!!!! That was just the info I was looking for until I can get it checked out eventually. You are right, works just like you said. Appreciate it. At least now I don't have to worry about the car alarm going off in the parking garage at work and draining the battery.

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So if your horn beebs once when locking your car it is telling you that something is not working!?! I thought the single beep just told you the car alarm was set. when mine had a door/window issue it would beep twice and the red lock light on the dash would stay on. Is something different on cabs or '02s? Mine has always beeped once, for all of the 3 yrs I have had it!

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Your are welcome! Thought that was your original question... too bad I have a similar unresolved issue that had me wondering too if replacement was the best option! Post back if you find the issue, I will be doing all of the work on mine here pretty quick and am interested in getting it resolved!

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^^ this is your answer.

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If if Beeps once then a zone is not closed (door, hood, frunk, glove box, radio, or center console) If it beeps twice then the interior motion is turned off. Some people with push the micro switch contact out of the way on the center console to make thier car beep. The want it to make a sound. Porsche wants the car to be quite when it arms. There is not other way to make it beep.

Guys. Please help. I have replaced all interior and probably missed something. When i lock car it beeps once. MEaning that there is some error. Door, hood, trunk swithes are OK. Because if i leave open any of them - car wont lock. Meaning there is some other error. What do you have in mind: center console switch ? what is that?

Yes, there is a wire set going to the center console. That's most likely it

Just lift the arm rest lid up and check the latch area of the center console. There are two slot. One accepting the lid latch, the other is a microswitch. It's likely it's not working or there's wiring problem (need to remove the center console to get to it).

I now have this annoying issue. I took my CDR-220 out to add the Aux In and when I put it back together I get the single beep. I pulled the radio again and noticed this piece swinging free with the Brown/Blue wire attached. It seems when some have disconnected just the wire and taped it up it has fixed the alarm issue for some and not others in my reading. Does anyone know if this works on resistance or if it is strictly a contact point when the metal of the radio contacts this it sets the alarm off? I thought about leaving it attached and just taping the whole piece. Any thoughts?

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awesome thanks for this....the service techs at the dealer didnt know how to overcome this situation. tried it today and it worked. thanks for posting!

Update on the Radio Alarm wiring. Ok, I inspected the Brown/Blue wire and didn't see any cuts so I taped the end and reinstalled the radio. I locked the car with the fob and beep. So I reconnected the piece below and taped it up, reinstalled the radio locked the car with the fob and NO beep. I tried it a few times with no issues and no rogue car alarm over night so I think it is fixed. So I am not sure how all this fits but I am glad it is working correctly now.

On my 99 C2, I disconnected the seperate alarm horn. It's located near the battery on the driver's side. I got tired of chasing the problem.

Aloha! I am having the same problems with my 1999 996. AND my FOB doesn't work. So I've been either leaving my car unlocked (scary) or locking it (sometimes I get a single horn beep, sometimes I don't) and the alarm still goes off. My mechanic said it was because the interior sensor was "seeing" a lighter color in my interior vs standard black. He suggested I cover the eye with a black cloth. STILL goes off. I need to be able to simply lock my car. Don't really care if the alarm is armed (would prefer it's not since it likes to go off at it's own whim). Can I do the lock, unlock, and don't touch to auto relock solution suggested above by using the key in the door? Any help is appreciated. Laura Porsche is a TWO syllable word

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What color is this wire? Was it attached to the factory radio? I had an aftermarket radio installed and now the alarm is going off. I need to know the fix on this as I cannot leave the car unlocked.

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@smorris can you describe what your door window issue was and how you fixed it as I'm having exactly this same double beep issue since having my passenger door resprayed and it's super annoying! Many thanks 😁

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smorris last post 10 years ago in 2011. Don't think you will hear from him, but who knows? GL BTW, did they remove the door card or window to respray the door?

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Thanks @Joe996 and good point! re: the door yes as it was being straightened as well they would have definitely removed the door card, and I'm guessing the window actuator too - where about's are the switches that the alarm checks?

There are many microswitches in the door - inner and outer door handle microswitches and several in the door latch mechanism. Does the window drop occur when you pull on either the exterior door handle or interior door handle? You should pull the door card off and make sure all the switches are connected. Read up on how to remove the door card and side air bag. Disconnect battery before proceeding.

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Good idea - I tested both doors from outside and inside and the window drops correctly in all cases so I think we can rule out the handle as being the problem. I also locked the car and tested the handles and they are correctly inoperative when locked so maybe it is one of the micro switches in the door lock not informing the alarm that the door is locked correctly?

There are a number of microswitches in the door latch. I would check it with Durametric first so you are not on a wild goose chase. See this thread here https://rennlist.com/forums/996-foru...-detailed.html

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I had this problem. It ended up being a faulty door lock unit. The door would shut and open just fine, but something electrical in the unit was telling the car the door was still open. Open circuit? Replaced that part and all is fine.

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Awesome feedback, thank you, and also to DBJoe996 for the link above to the lock replacement thread New VW replacement lock ordered and I will be fitting in the next week or so to hopefully solve this rather frustrating problem!