So I unlock my drivers door and then, without opening the drivers door went to open my trunk and the alarm goes off. Hmmmmm.

I called the Benz mechanic, they said just lock the car. That did not work. After 2 cycles of the alarm going off, it stops. Ok, great.

The car is unlocked, I decide, I'll open the front door and then put my car cover in the trunk. But noooooo. The alarm goes of again when I open the drivers door. Again, 2 cycles and it stops.

The cycles are alarm noise, followed by blinking lights and then alarm noise again.

It seems that if I open the passenger door, the alarm does not go off.

What am I doing wrong? If anything. Can someone explain it to me? Appreciate the help.

I've seen great detail in how to disable the alarm but would prefer to keep it if I can. Almost sounds like a common problem on w201, 1988 2.3