Genuine Mercedes-Benz Alarm Siren  

Part Number : A1718202526  other parts no.A2198203226

FITS Most Models

Including

 A-Class W169

B-Class W245

C-Class W203

W C208 / C209 CLK,203

 C219 CLS

 E-Class W211

W164 / W163 ML Models

W251 R-Class

 R171 / R170 SLK

 R230 SL

This siren has an audible signal to confirm when the vehicle is unlocked ( *1) or locked (*3). This function is only available after updating the siren module..