I took my car into the dealership because it was making weird noises in th siren, randomly going off, draining my battery. I thought maybe it was the siren, but they plugged it into DAS and they told me it was the control module and that it needed replaced. They wanted 200 for the part and another 120 for labor. So I bought the part on getmercedesparts.com . I thought it would be in the shroud with the siren, but to my demise when I got the fender liner off it was not there .

Any help would be GREATLY appreciated.!