Maybe someone can setup a sticky at the top of this B-class forum (can the Moderator help?) to collect not just a list of 1st defect, but also all problems related to the B-class, so that we can have a database to use as reference?
(Maybe a brief/detail description of the problem, year of manufacture, mileage when the problem first occurs...etc relevant data cab be stated)
Did anyone hear about a theory which saids that you are not allowed to leave the key in the ignition for more than five minutes since you turned off the engine?
A few days ago, after second revision (Service C), the service workers tried to start the engine as for the sensors and computer to pass this service C for the next counter of KM, but the ignition did not accept the key. When they tried to press the key inside, the ignition did not received it by "biting" as it usually does.
They told me that this is happening because the key remained on all the revision period of time in the ignition, and that when the key stays inside for more than five minutes, the car will not recognise the key again by biting it inside or locking/un-locking doors. They eventually used a primitive way to "repair" it: removed the power plug from battery as to reset the computer (bastards - I live in Romania) and after plugging it back, the car accepted the key in the ignition by biting it inside and also locking and un-locking doors.
I have two possbible answers/hypothesis:
1: It's true that you musn't leave the key in the ignition - otherwise the car will not accept the key for un-locking doors or starting engine (I wouldn't believe that because I leaved the key for whole hours in the ignition several times and I had no problem);
EITHER (very likely)
2: The mechanincs made it somehow not accepting the key on purpose for keeping the car in the service for a longer time - and make me paying more for that time for their manual labor (it costs about 50$ for every hour of manual labor). Here in Romania, all services are keeping the car in the service for longer time than needed, for this manual labor which you have to pay at the end. Every driver knows that but you don't have any alternative way.
(Services here have two methods for ill-gotten gains: Keeping the car soe extra 1-2-3 hours which you have to pay and having 70-90-100% addition price for the parts needed to be changed in revision).
So, can anyone confirm hat you must not leave the key in the ignition?
i'm always leaving the key in the ignition and never had problems with starting the engine or (un-)locking doors
i don't remember whether something about leaving the key in ignition is in owners manual but i doubt
such explanation sounds rubbish:/
Key Problem!? 
Linear Mode
