a 230e merc....in winter weather at approx 15C what should the engine temp get to? If i run my car in 'e" it only runs at 50C but in 'S' it runs at 80C.... normal?
50C is way too low, 80 is about right (maybe a bit low). The change from "E" to "S" should make no difference whatsoever.......you've got an electrical problem.
I'll bet the engine is running at the same temperature, just the gauge thinks it isn't.
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