what causes the key in the ignition lock not to turn all the way when to start the engine,have slk class convertible and it has this problem,sometimes it works and sometimes doesn't turn to start?
Have this car for 2 months and encountered this problem,when key is inserted it powers up the car but when you turn the key to start it stops and sometimes it goes to start,so does the problem lies in the tumbler of the ignition assembly? what solution or part is to be replace or repair to this problem?