Quote:
Originally Posted by arvidj
Technical Bulletin S-SB-0021-15, issued September 17, 2015, Idle Fluctuation in Park or Neutral.
Applicability: 2015-2016 FR-S
Introduction: Some 2015-2016 model year FR-S vehicles may exhibit a condition where the engine idle speed fluctuates (typically 500 - 1000 RPM) only when the transmission is in the Park or Neutral shift position. This condition occurs after the vehicle has been driven about 25 miles or more at highway speeds. The Transmission Control Module (TCM) logic has been revised to address this condition.
I had the TCM software upgraded yesterday ... about an hour at the dealer total time ... and the idle is now rock solid.
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THANK YOU so much for this, gonna bring it in to my dealer again with this. They said they didn't notice any issues when I brought it in and I just let it drop since it wasn't really affect use of the car.