Originally Posted by
Astrofriend
I got some problem with the anti theft alarm, I can still drive the car without problem.
Sometimes I get an false alarm when enable the alarm. The door switches turn on/off the interior lights so I don't think it can be them. I think it's one of the other swithes, the hood or the tailgate. I found a lot of documents here with schematics which help a lot.
I try to make it a bit clearer how it works and how to find what cause this problem with the alarm. I think it can be for some help for others with similar problem (when I have solved the problem). It's here on my homepage:
Chrysler Crossfire: Control unit . Page 2 and 3.
Anyone who knows which codes from the OBD reader that sense the alarm switch's status ?
Lars
If your alarm siren is the original and has never been replaced, that may be your problem. The alarm siren has it's own small batteries inside of it. These original batteries corrode over time and the acid leaks onto the circuit board.
This will cause the alarm to go off randomly and cause other problems. The alarm siren is located under the windshield wiper cowl. You can just remove the alarm siren or replace it. You should also clean the drains while you have the cowl off.
I chose to replace mine, here is a post I did on how to replace the alarm siren. There are two parts;
Link to Alarm Siren and Drain Cleaning PART 1
Link to Alarm Siren and Drain Cleaning PART 2