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Mine is a 2012 35i and had the exact same warning today. I had driven about 40 miles highway with AC on and at 75-80mph. Got the warning and then within a minute or two the overheat warning in red comes on and now I'm into the breakdown lane. I shut off the engine. About 3 minutes later I started it up and drove the last 10 miles without AC on and no warning. I looked in the engine compartment and everything was dry..no steam coming out of the engine. The engine sounded fine. Then about three hours later I drove back home 40+ miles at 60mph without the AC and then the last 10 miles I put the AC on and boosted the speed to 70+mph and no warning pops up. So what gives? Is this the beginning of a water pump failure? I'm going to see my local mechanic on Tuesday. This is just a few days after I got a warning about a damper malfunction. Geez...could it be that there is something wrong with my main computer and not any actual mechanical malfunctions? The car now drives fine.
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