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If the check transmission light in your 2010 Acura TSX turns on, it could be because of low transmission fluid or a problem with the transmission temperature sensor. If you see this warning light, the first thing you should do is check the transmission fluid level. If the fluid level is fine, a faulty transmission temperature sender might be the issue. A flickering light or one that only comes on when you hit bumps on the road might indicate a loose connection in the transmission wiring or a damaged wire. Other issues like rough or unpredictable shifting, failure to shift from first gear automatically, or dark and burnt-smelling transmission fluid are signs of a problem that do not rely on the warning light for you to recognize.
In 2010, if the check transmission light on your Acura TSX turns on, it could be because of low transmission fluid or a problem with the transmission temperature sensor.