Hello everyone. I'm new to this forum. It's just that I bought a 2009 407, 2.0 hdi (manual transmission) about a month ago. Been driving well. I decided to have it checked by a mechanic last weak, because I thought I was hearing noises from under the car. They told me mechanically everything looked in good shape and that I had nothing to worry about. But when I got in the car to drive away, I noticed a strange message on the radio display (or the main display above the center console). The message said the following "Do you want to continue listening to traffic information from XXX radio channel?" I switched it off and continued driving. I thought may be the guy was playing with radio. Didn't think it was serious. But then after 10 kilometers, I got another fault code saying "Pollution system faulty" on the display and the big red STOP sign on the dash board. And this time the car went on limp mode. I cycled the ignition off and on, and it went away, I was able to drive home. Next day, I received "engine oil pressure " warning in a very similar manner. And the message on the radio about listening to traffic info will pop up every so often, absolutely randomly. This morning, I was about to start the car, I turned the ignition to ON position and the car went through the routine check sequence and registered the pollution code again. I cycled the power and it cleared itself. So I am now starting to think that all of these are false alarms and could have been caused by accidental damage when the mechanic was going around and moving things with a big pry bar. May be he accidentally damaged or shorted a cable. The place was an independent dealership and is called Auto Garant. I live in Czech Republic. I went back today and reported the problem. They insisted that either I was making things up or it was a coincidence. And basically I was told to leave. Tomorrow I am going to file a complain with the local office of business practices. Because I am really frustrated. But other than that, what do you think may have happened? The mechanic was mostly checking the moving parts under the car. And I saw him doing something under the hood also. How could a mechanical inspection trigger electrical issues? Anyone had similar issues? Thanks in advance.