Hi, I'm new to the forum! and need help. I have a BMW compact 316ti se 2002 1.8 lt . Car runs up to temp and needle stays in the middle. However the fan is not cutting in, Tested for fault code and got 279D. which from my understanding is electric fan output stage. whilst testing to find fault code the guy did a coolaint fan test from the diagnostic tool and fan came on. any suggestions ??