JCB460LS Posted January 23, 2019 Share Posted January 23, 2019 We have a 2017 RX 350. When in Dynamic Cruise Control set anywhere between 35 and 70 mph the car is constantly reaching for a gear to be in. Has anyone experienced this? Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted January 23, 2019 Share Posted January 23, 2019 Is it really bothering you? The 8-speed transmission changes gears so that the engine runs in its most fuel efficient rpm range with excellent power on demand. I usually don’t even notice the shifting of the 8-speed transmission which was much more noticeable with the previous 6-speed transmission. I assume you are driving in areas with at least modest size hills. If it's shifting when driving on completely flat roads, then there is a defect. Edit: Whoops! The 2017 still had the old 6-speed with the much more noticeable shifting on hills. Quote Link to comment Share on other sites More sharing options...
JCB460LS Posted January 23, 2019 Author Share Posted January 23, 2019 Jus talked with our Lexus Service Manager and he said that Lexus is aware that it is a problem with some 2017 RX 350 and they just got a complaint on a 2019 LS. Lexus is working on a fix for reprograming the transmission but have to get it approved by the Feds who are not working at present so fix will be delayed. Quote Link to comment Share on other sites More sharing options...
JCB460LS Posted January 23, 2019 Author Share Posted January 23, 2019 Our 2017 RX has the 8 speed transmission Quote Link to comment Share on other sites More sharing options...
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