Alarm Goes Off Immediately After I Lock my Car

[ivass]

Hi Guys,

 

I had a MAF failure which triggered a CEL on my 2013 C2S, and while fixing this, I noticed that I have two other errors. One was for the micro switch on the passenger's door, and one was for the siren of the alarm (my siren never worked, so I knew about the issue). I replaced the door handle with the micro switch and the siren. Now, I few seconds after I lock the car, the alarm goes off. Can anyone think of what might be triggering it? I am guessing this is whey the original siren had burned out.

 

Hope one of you can point me in the right dirrection.

 

Thank you,

 

Ivo

[JFP in PA]

19 minutes ago, ivass said:

Hi Guys,

 

I had a MAF failure which triggered a CEL on my 2013 C2S, and while fixing this, I noticed that I have two other errors. One was for the micro switch on the passenger's door, and one was for the siren of the alarm (my siren never worked, so I knew about the issue). I replaced the door handle with the micro switch and the siren. Now, I few seconds after I lock the car, the alarm goes off. Can anyone think of what might be triggering it? I am guessing this is whey the original siren had burned out.

 

Hope one of you can point me in the right direction.

 

Thank you,

 

Ivo

 

Easiest way to find out exactly what is triggering the alarm is to scan the system with a Porsche specific scan tool (PIWIS, Durametric); the alarm system stores that last ten alarm trigger faults in its memory.