96 993 Cab Tip Alarm Issue

[txhokie4life]

96 Cab Tip.

Yes I know there are a million if not more topics -- but I searched and
didn't specifically see my issue.

If I missed one -- then a pointer would be great.

This is my wife's 993 -- so I don't know all the details... but this is what i know.

today, twice -- the 993 alarm went off and went through several of its cycles.
First time she was able to wait long enough and get it to start.
Second time she gave up waiting multiple 4 minute plus cycles.

I went back up there: What I noticed is that I did the key fob and it immediately clicked -- seemed like it activated the alarm. I then used the key in drivers door.
It beeped once and then about 1 sec later -- the alarm triggered.
Horn fired, and I could see the door led quick firing.

I was able to use the door key and pull the handle to get in.
Then I just sat there ~4 min later the horn stopped (I brought ear plugs and avoided the stares :-), a few minutes later the flashers stopped.
I believe I tried to turn on the car and hit the key fob while in the ignition a few times while the horns were firing. No dice.

Once the lights stopped flashing I was able to turn the key and press the alarm on the FOB and the car started. I did notice the key switch LED on the center console switch was illuminated. I did not touch it.

Got home, turned off the car -- got out shut the door, opened, and climbed back in and I was able to start the car without needing the FOB.

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So what I think I know:

FOB works -- it at least appeared to trigger the alarm, but not unlock it.
It also communicated with the Immobilizer after the alarm stopped triggering.

I did have some service work done and the battery may have been disconnected.
I have driven since then -- but I never lock it -- so I'm not sure the alarm was engaged until today.

Is there some sort of learning required for the alarm -- as the FOB worked fine with Immobilizer - and also seemed to trigger the doors to lock.
It just won't unlock things.

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I plan to go back out after work and try some experiments -- but I'd like to be a bit informed before I do so.

How many beeps should I get when I turn the key in the drivers door if things are working properly?

If the alarm sets by the FOB -- what should I expect --
? blinking door leds?
? what should happen if I pull the door handle?

I also saw a post that could disable the alarm system via key turns in the ignition.
How long does this last and does this disable the central locking and remote locking?

I clearly have to find a solution -- or the wife won't drive it -- selling is not an option :-)

thanks,

Mike

P.S. I do have a duramatic -- not sure if it communicates to the alarm system

[txhokie4life]

Went out to the garage to take a look again.

I was able to use the key fob to lock the doors and alarm the system.
I think I got two head lamp blinks and the door locks engaged.
Got a steady 1/2hz (1 per 2 sec) LED blink.

However, the FOB would not open the car. Doors were definitely locked.
Same steady 1/2hz (1 per 2 sec) LED blink.

Using the key I turned CCW, got a beep, with a pause -- then the alarm triggered. I could not get the alarm to stop nor could I get the key or fob by itself to allow entry -- I was able to get entry by turning the key and pulling on the door handle simultaneously. I was getting a quick double led blink then a pause, repeat.

I didn't try to start it.

After the alarm quieted -- and the lights stopped blinking -- I still had the quick double LED blink then pause, repeat.

Then I pulled out my durametric to read alarm fault codes.

Ironically it would not give me anything other than the Alarm Ecu information
until I cleared the faults -- then I could read the faults below:

Block 0 (ECU Type) I02ALARM
Block 1 (Porsche Part Number) 92861826003
Block 2 (Vendor Part Number) 181996008019
Block 3 (Software Number)

14
Position of the drive elements implausible

16
Engine comp. open during activation

18
Glove comp. open during activation

I checked the glove compartment and it seemed to operate fine, light coming on when you
open. Same for the engine lid.

What in the world is the position of the drive elements?


If I let it go through its complete cycle (with ear plugs in) -- and then
through the blinking light sequence, I can then disable the immobilizer and start the car.

I also note that the door LEDs are not illuminated -- so I think disabling the immobilizer resets the alarm????

In addition, I checked the battery -- 13.6V engine running, 12.5 engine off.

I sure would appreciate any insight.


thanks,

Mike