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alarm issues

devans

devans

New member
For some reason i got up this morning and i couldn't open the car with the key fob using the alarm button. [:(]All efforts failed which ended up with me having to open the car with the key in the door. [8|]Needless to say the alarm went off [:'(]until i put the key in the ignition.
Any ideas!!!! I think the neighbours will soon get fed up with my alarm going off...The red led lights bright enough on the key fob.
Any advice would be appreciated.
By the way Richard, sorry i didn't respond earlier but are you able to forward the details for fixing the window regulator (see post 18/11/07), my e-mail is devans@blake.staffs.sch.uk
Thanks
 
When did u last drive it? They automatically shut down the fob activation after 5 days I think it is. Then only the key will unlock it but if you press fob immediately after unlocking door with key it will all be ok again and reset.
 
What Neil said.....

BTW, I sent the window instructions to the freeserve address, which you must have set in your profile. I've forwarded it to the other address, so you should get it in a mo.
 
I would see what happens after the battery has had a good charge. Low voltage causes all sorts of alarm issues.

I can't remember what year your car is, but if it is pre-2001ish, check that the alarm tilt sensor isn't filled with water, which is a common source of false alarms. It is located under the cover to the right of the battery as you look at it. (The box with the white sticker in the pic).

4069D0069F3149489992DC7D5D2C9938.jpg
 
My alarm always tends to go off as the battery drains towards flat so I've always got it on a trickle charger now. I've always assumed it was designed that way in case anyone is trying to cut the power to silence the alarm in order to steal the car. I believe the alarm has its own battery to keep the sounder going.
 
Thanks for your replies.

Car will stay on charge overnight, and I will check the tilt sensor in the morning, as the car is 1999.
 
Turn ignition on in the few seconds before the alrm goes off after unlocking car?

DJ
 
I didnt think there was a solution. Why isnt it as simple as other cars where you simply remove a fuse.
 
I have had the same problem (remote not working despite battery changes) for a while but fortunately do have a few seconds after unlocking before alarm goes off so I can switch the ignition on and disable the alarm. All the other locks remain on though (fuel cap, boot and passenger door) which can be a pain but I suppose has not been enough of an issue so far to be in a rush to get it fixed.

DJ
 
If it's getting sluggish then it might be time to change the battery - if it's the Porsche fitted "Moll" brand then they seem to fail pretty quick after first symptoms appear.

If it's the Moll battery then how old is it, and have you ever topped up the cells? They do need it now and again.
 
This my first winter with it so I don't have any point of reference. But I'm aware that new cars do drain batteries quite quickly.
Is the cigarette lighter live with the engine off (for the accumate)?
 

Alarm problems are generally a symptom of incipient battery failure Richard.

If you're not using the car regularly, I'd keep the battery on the AccuMate. It's only a minor faff to connect/disconnect; and you should avoid possible complaints from the neighbours when the alarm goes off..!

The cigarette lighter on my 987.2 Cayman is always live, but it may be different for your car; easy to check. Personally, I prefer to use the croc clips to attach my ctek to the battery after I had problems connecting via the cigarette lighter module.

Jeff
 
I would echo Mark's comments completely. Is it a Moll, and how old is it? Anything over about 4 years and you are living on borrowed time.

The ciggie lighter socket on your car should be permanently live. It was the earlier pre-facelift 996's which were ignition-switched.
 
Thanks everyone. I'll have a look at the battery tonight and put it on charge.
Its an 03 (04MY) so hopefully permanently on lighter. I can put a solar conditioner in and just plug that in as I park up.
 
Had Bosch Silver batteries on my old 911SC (very little use - 1500 miles a year) - none of them lasted less than 8 years.
Also seemed to survive the odd long (accidental) deep discharge.
 
You really need to know exactly what is setting it off, so getting it plugged in to a Porsche tester is the best way of diagnosing the problem. That said, the two common causes of random false alarms are the interior monitoring sensor (near the rear view mirror) and the tilt sensor (on a '98 car, to the right of the battery as you look at it). Take a look at the tilt sensor and see if it is full of water. You can see the tilt sensor under the black/red alarm siren. Disconnecting it (remembering to switch on the ignition before you do so) might eliminate it as the source of the problem.
 
Charging the battery is one thing, it holding the charge is another..... have you had any issues with windows lowering or the rear spoiler coming up?

Strangely, this does happen when battery is faulty & obviously depletes it further + it triggers the alarm siren....
 
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