"Cruise Control does not Operate after Programming with ISTA/P 3.56.x. After programming the vehicle with ISTA/P 3.56.x (integration level F025-15-07-50x), cruise control cannot be activated. If the customer tries to activate cruise control, a Check Control message ""System cannot be activated"" is displayed. CAUSE This is caused by a software error in ISTA/P 3.56.x and is planned to be resolved with ISTA/P 3.56.2."