The Thermo control valve on the vehicle failed. This has been such a consistent problem, that Subaru has extended the warranty for this item to 150K miles. I realize that alone is not a safety problem, but the issue is that when there is a check engine light error, the system shuts down the cruise control, lane departure, collision avoidance (EyeSIGHT), and XMODE (all wheel drive). The safety issue is shutting down these unconnected safety features because of a check engine light. I will say that the dealer promptly fixed the problem at no charge under the extended warranty. my concern was the loss of the 4 wheel drive right as major snow was hitting the Mid Atlantic Area.