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2001 S here, with 145K miles on it. In short: at 138K (when I too posession of the car) I overhauled the engine due to a cracked head, replaced the clutch/plate ($8K). Left gear box intact but flushed the tranny fluid. At 141K I overhauled the suspension including a ROW M030 kit, new springs, and all new mounting hardware, overhauled the brake calipers, new rotors and pads, completely re-did the calipers with new paint and decals, flushed the fluid, new lines, new tires (Michellin Pilot Super Sports), and new diagonal control arms ($7K). New complete sound system. The list goes on. The car drives nice. I'm a complete idiot.
Update. I replaced the passenger side door latch mechanism, AND the ignition switch. Best I can say is that I seem to have 'affected' the problem. I still get the red light on the door lock button on the dash, although its less frequent. I don't get the double-chirp while driving, although, if I press the red light button while its lit, the door locks actuate and the alarm chirps twice.
Sorry, I didn't see that you were the same person who posted on 986. Thanks for your help. Just so I'm clear, you say that 47 and 61 indicate that a "door" hasn't fully closed. Is that to say that 47 and 61 eliminate the trunks, gas door and center glove box from consideration?
Thank you. One follow up question: how would I know if its the alarm module vs one of the doors? Would the list of 10 previous alarm faults reveal that? And if it is the alarm module, is that a dealer job? Yikes
I hope you don't mind me jumping in on this; I have what appears to be a very similar problem with my 2001 S and its driving me nuts. Symptoms: car alarm will occasionally chirp twice while driving (very embarrassing) and door locks actuate. Car will occasionally do the same thing while its at park, with the key out. The door lock light in the dash occasionally comes on and stays on. Other symptoms: locking/unlocking the car with the key in the door handle seems to work fine. Both doors lock and unlock, but I notice that the gas filler door doesn't become locked. If I use the key remote the alarm chirps once, the lights flash, and both doors plus the gas door lock, and the alarm indicator light on top of the dash flashes. Upon unlocking/disarming with the key remote, the alarm chirps twice and everything gets unlocked as it should. I took the car to my neighborhood Porsche guy and he read the error codes for me. They are: #10 Voltage Failure at #30; #61 Center lock unit position not reached; and #47 Control locking syncronization unlocking not possible. I'm seeing so many explanations for this, from the alarm control module, to a door latch mechanism, to a door handle microswitch, to a loose glove compartment lid. Desperate to find out what is wrong before bringing it to the dealer. I am suspicious of the door lock mechanisms, but which one? Can anyone shed some light for me? Thank you