2011 Mercedes C-Class Owner's Manual - Page 50

48 Occupant safety System self-test The 45 indicator lamp illuminates when you: the SmartKey to position 1 or 2 in the ignition lock Ron vehicles with KEYLESS-GO, press the Start-Stop button once or twice The 45 indicator lamp goes out again after approximately six seconds. If the 45 indicator lamp does not illuminate or is lit continuously, the system is malfunctioning. Before transporting a child on the front-passenger seat, have the BabySmart™ system checked at an authorized Mercedes-Benz Center. For more information, see "Problems with the air bag deactivation system" section (Y page 49) Rturn Safety G Warning Do not place powered-on laptops, mobile phones, electronic tags such as those used in ski passes or similar electronic devices on the front passenger seat. Signals from such devices may interfere with the BabySmart™ air bag deactivation system. Such signal interference may cause the 45 indicator lamp not to come on during self-test. The 6 SRS indicator lamp and/or the 45 indicator lamp could be continuously lit, indicating that the system is not functioning. The front-passenger front air bag could deploy inadvertently or fail to deploy in an accident.