Steady AT Temp light - 2013 Subaru Legacy 2.5i

Asked by Aug 02, 2019 at 03:19 PM about the 2013 Subaru Legacy 2.5i Premium

Question type: Maintenance & Repair

2013  Leagacy 2.5i has 65k miles. AT Temp light
comes on steady after driving at 70 mph for about
an hour.  Only happens on road trips, not in town.  
Light goes off after stopping.  Dealer says
mothong is wrong. No codes.

2 Answers

10,815

after repeated thermal cycling one cannot trust sensors, especially if the coolant is OLD and full of particles~ stuck on the old sensor? microwave up some tea and plunge it into the boiling water and measure the output~ would get a brand new sensor and data receiving end. perhaps the ECM does this nasty business~ subarus are neat 4wd the BRAT had the spare over the motor, they were different~ check the Grounding of the ECM if your tester is handy~

236,855

Change the transmission fluid.

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