Alarm System Keeps Going Off
Been thru a bunch of threads on the alarm system - Driving a 99 that the alarm keeps going off.
From the threads I have learned - Please correct me if this is incorrect. To shut off the alarm you double click the key fob door lock button - Horn will beep and marker lights will come on solid for about 2 seconds If one presses the key fob to lock just once and the horn goes off this is signalling one of the alarm switches has not been satisfied. What I find happens - Mainly every time I lock the car I will get a horn signal (pressing key fob) only once. This is telling me something is not set - If I hit the key fob to lock and the horn does not go off anywhere from 1/2 to 2 hrs later the alarm will start sounding. I believe what this is telling me is one of the switches has opened or closed indicating to the car a breach of the alarm system and setting it off. So what I want to know - do I have the key fob button pressing sequence correct - Press once to lock - no horn beep - all is set with the alarm Press once to lock - Horn beeps - something has not set in the alarm system. Press twice to lock - Alarm disabled. I do not know which of the switches has failed is usually open - I have manually made sure the roof latch switch is all the way in - Does anyone know why when pressing in the switch for the soft top latch it clicks 2 time - once at about 1/4 of the way in and once at 3/4 of the way in? Made sure the center council is good - both by checking lid is closed properly and manually tripping the switch - Have pushed down on the frunk and trunk lids I suspect it may be in a door lock or the radio ground - The car has an aftermarket stereo. Going to take into Porsche and have them diagnose - If it is from the stereo I will have the installer take a look. Hopefully they do it for free. If it is a different switch I may take it on myself or just let them do it. Does anyone have a list of all the alarm switches in a 99? |
Relatively easy to isolate if radio, either insulate radio body or remove the clip (which I did to resolve issues with Becker Indianapolis.) On LHS of radio cage.
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Thanks for the replies - Pulled radio - did repair - all good now.
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