Hi, on my 1998 SL500 I'm having problems with the alarm. Last Sunday I unlocked with the remote, opened door, climbed in, but when I started the engine the alarm went off. Yesterday after setting the alarm with all doors/windows/bonnet/boot/hood closed the siren started beeping (less than one second) several times, then settled down and was silent. Another time I unlocked with the remote and the alarm went off. I believe the alarm is the factory fitted alarm. The manual says 3 flashes from indicators when arming and one when disarming and that the alarm can be deactivated by turning the ignition on. All these work as advertised. One thing that does not work is the closing of the windows when I long press the lock button on the alarm. Also another odd thing is that the siren unit under the bonnet has a scorpion logo on it (you have to take the siren out to see it). At the base of the drivers door A pilar there is a LED which flashes every 3 seconds when the alarm is set, and a little 3 pin connector. Does anybody else have this? (see pictures) I'd like to know where the Alarm / Security System module is in the car. Does anybody know? Any other help would be kindly received. Thanks!