This is a Technical Journal: 1.Remove oil pump from AOC (Active On demand Coupling)and inspect the strainer. (See att.) 2.Clean strainer with lint-free cloth, do not use any cleaning liquids (this can contaminate the oil) 3.Clean pump sump in AOC, do not use any cleaning liquids (this can contaminate the oil) 4.Assemble cleaned pump to AOC 5.Fill up with new oil to correct oil level in AOC according to VIDA. 6.Perform a calibration using VIDA If there is a screeching noise (see attachment) and the calibration finishes within one minute, the AOC is OK, and sludge on the strainer and/or air in the oil system is root cause. Release the car. If there is not a screeching noise, and the calibration process takes more than one minute due to autostarting two times, then do a test drive while trying to provoke front wheels slip (obey all traffic laws and be aware of your surrounding). If the DTC returns, then replace the complete AOC. If the car is inside structure week 201220-201419, use VIDA to order and download the following SW after AOC replacement:: 31411060 for car 134, 155, & 156 31411059 for car 124 & 136
