2007 Mercedes C-Class Owner's Manual - Page 82
2007 Mercedes C-Class Manual
Page 82 highlights
Safety and Security Panic alarm* Panic alarm* i USA only: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Activating Press and hold button  for at least 1 second. An audible alarm and flashing exterior lamps will operate briefly. Deactivating Press button  again. or Insert SmartKey in starter switch. 1  button i Canada only: Only vehicles equipped with an anti-theft alarm system* have SmartKeys with integrated panic button 1. Any unauthorized modification to this device could void the user's authority to operate the equipment. i Canada only: This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) This device may not cause interference, and (2) this device must accept any interference received, including interference that may cause undesired operation of the device. Any unauthorized modification to this device could void the user's authority to operate the equipment. 81