A Thermo Control Valve Assembly, which is on the engine caused eye sight driver assist / collision avoidance light to come on and stay on as well as lane correction light, check engine light, I believe air bag lights and other lights, and all of these systems stopped working. The cruise control completely stopped working because it is adaptive and since the eye sight driver assist wouldn't work, neither would the adaptive cruise control. The engine would not get warm and caused additional problems, such as high idle rpm's as the computer was telling it that it still needed to warm up, could not get heat out of the vents as the engine was not getting warm enough. The higher rpm's cause the fuel economy to go from around 28 mpg to 21 mpg or lower.

I think it is TOTALLY RIDICULOUS AND SHORT SIGHTED for Subaru to engineer a vehicle, that when you have an engine sensor bad or engine problem, for it to disable a lot of your safety features. This is shortsighted, unsatisfactory engineering. It forced me to drive a vehicle without many of the safety features for about 90 days since they couldn't get the parts to me for that length of time. I paid for these safety features and could not use them because of a engine sensor problem. I was paying less insurance premium due to my insurer thinking that I had satisfactory working safety features, yet, I did not. I think this is SUPER HIGH RISK for Subaru. Had I been involved in an accident that may have been prevented by properly operating safety systems, this would have left Subaru at high risk for a successful lawsuit remedy for me, any other injured party and even the insurance company for having to pay out a claim that could have been avoided or mitigated if the safety systems were operating. This is totally foolish on Subaru's part to have an engine sensor problem disable many of the very important safety systems features !!!