Had my car in Wed. and they replaced the relay, said the ECM was still good based on their diagnostic equipment. Now the fan does not run in the AM first thing anymore, but a couple of times has come on after I get off the highway onto back roads on the way to work - temp was like 38 degrees outside & the fan contimued to run for about 6 miles of mellow driving, until I shut it down. I restarted immediately and no fan came on. I may be oversensitive to it now, but I never remembered hearing the fan run on this car before - even in the summertime. Is is possible the ECM is toast even though the dealer says it's OK (of course anything is possible)? In general terms, when should the fan run & for how long, assuming that it's relatively cool out & you're just cruising around? Subie tech guys - any input?