1st question: With my W221 S320 CDI Bj 4/11 I read in the operating instructions that the oil level in ignition lock position 2 can be retrieved after 5 min with a warm motor. In the display, however, under the point service this line does not appear. What can be the fault? 2. Question : The operating instructions say that there is a point reading function in the control panel in the command. But with me not. Was the special equipment?