If the system is coming on un-commanded, it sounds like some kind of system malfunction that will require checking into first hand.
This will require professional assistance. A Mercedes-Benz experienced technician with proper test equipment and workshop manual materials will be needed.
Use this link to find some shops near you that can help with your concern:
www.repairpal.com/repair-shops
RepairPal Certified shops can diagnose and repair your 2013 Mercedes-Benz CLS550. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
