[Tcoat]

Originally Posted by Mwillywag

I realize this is a very old thread, but I have a 2015 Scion - FRS (13,000 mi.) and am experiencing an idle problem. If I drive the car on the freeway (60 - 65 mph) for around 30 miles, when I come to a stop, the engine idle drops to around 500 rpm, jumps back to around 900 rpm, then slowly drops and repeats the cycle about every 30 seconds or so. No engine light. It does not always happen and it occurs in the summer and the MN winter, does not matter the outside temperature or raining/snowing/or dry. I did notice that if I shut the engine off and wait at least 10 seconds, start the engine back up, the idle returns to normal.
I will be going to the dealer today for a key interlock recall and oil change and will mention it to them to see what they say. I took a video of the issue to show them. I read that a re-flash of the ECU was recommended, but reading posts indicated this could have been resolved already.
Wish me luck.

There is a TSB for that in the autos: http://www.ft86club.com/forums/attac...1&d=1443640063