Subaru Repair: 98 Forester auto transmission temp lite, transmission control unit, new sensor

Question
QUESTION: My auto trans temp lite will go on after driving my car for about 10 minutes.  Dealer put in a new sensor and a new transmission control unit.  No help it goes on within a few minutes, especially when car is out in full sun and heat of day.  Dealer is lost, they have no answer.

ANSWER: i would need to know the codes that are coming up when they scan the transmission computer.






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QUESTION: Three different repair places tell me there are no codes.

Answer
That is strange, usually the light comes on because there is something wrong and it will usually set a code, like the check engine light will. I would make the dealer that replaced the module and sensor keep working on this issue, and I hope they are not charging you for their misdiagnosis.