Hi guys, first time poster. I have a new to me, 2012 TL Base AT with 23,000 miles. I was experiencing "clunky" and "hesitant" transmission behavior at slow speeds. I had read about a software update for the 2009-2011 TL's but never seen anything for the 2012 and newer cars with the 6-speed auto. On a recent trip to the dealer (Acura of Columbus) to I mentioned the transmission behavior to my service adviser and to my surprise he said that there was a software update for my car. He said that Honda developed updated software for the 2012 + transmissions but never released an official TSB. They only found out about it when a rep from Honda's Marysville facility (about 20 minutes away) visited. I've just gotten my car back this afternoon and the update has made a night and day difference. The shifts are much smoother and no longer "clunk" or "grab". I'll post my paperwork from the service as soon as I get home.
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