I'm having a similar problem in a 2012 c250 sedan. I was trying to get a garage opener to connect to the rear view mirror but it wouldn't work after 20 or so minutes in the "2nd" key position (all electronics on but not the motor). 10 minutes later someone else tries to use the car to go somewhere and it won't crank.
Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600 TO: Mercedes-Benz Dealer Principals, General Managers, Sales Managers, Service Managers, Parts Managers FROM: Gregory Gunther, Department Manager, Vehicle Compliance and Analysis, Engineering Services Hi all, my W204 2012 C180 CGI Blue Efficiency Mercedes Benz would not start, and the engine would automatically switch off as ignition is turned on. I noticed one particular thing, there is no check engine icon when ever the key is inserted, all other icons come up on the dashboard except the check engine.The 2013 Mercedes-Benz C300 has 11 NHTSA complaints for the electrical system at 27,714 miles average. Ignition switch malfunction and went dead, also steering column locked causing me to lose