See also:

General notes
If you use the mechanical key to unlock and open the driver's door or the trunk lid, the anti-theft alarm system will be triggered. There are several ways to turn off the alarm: To turn the a ...

Additional systems for the ultimate in listening pleasure and entertainment
Mercedes customers can, if desired, combine the infotainment facilities for the CLS with other systems: The Logic7 surround sound system developed by Mercedes-Benz together with the audio specia ...

ATA (Anti-Theft Alarm system)
A visual and audible alarm is triggered if the alarm system is armed and you open: a door the vehicle with the mechanical key the tailgate the hood The alarm is not switched off, even i ...