Update on wifey's A4 w/ flashing CEL.
#12
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By disconnecting the battery to clear the short term DTC memory, will also clear the driving dynamics adaptations that have been learned, requiring those values be re learned, re adapted before best performance will be restored. That may be the best way to restore the optimum characteristics, driving the car using maximum torque demand while the adaptations are relearned to minimize the learning time involved.
#13
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or failure mode that occurred in this case. Although, performance will have been reduced due to the presence of the misfires, and from the maladaptations that resulted, it's not the same as a primary "hard limp" mode.