Transmission Issues
Pole Position
Joined: Dec 2013
Posts: 3,466
Likes: 920
From: wa
Hi all.
So an update on my issues. Had Lexus do an oil change but not a full flush, 4 litres in. Had them reconnect the hose that was off. The service advisor said it was the evap system and likely the cause of my p 174 code. Did some city driving and a 160k of highway driving and the result is no codes. The noise the pump was making in reverse is now gone. Transmission is shifting just fine, I suspect a low fluid level. So happy camper! Thanks for all who took the time to give me some guidance.
So an update on my issues. Had Lexus do an oil change but not a full flush, 4 litres in. Had them reconnect the hose that was off. The service advisor said it was the evap system and likely the cause of my p 174 code. Did some city driving and a 160k of highway driving and the result is no codes. The noise the pump was making in reverse is now gone. Transmission is shifting just fine, I suspect a low fluid level. So happy camper! Thanks for all who took the time to give me some guidance.
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Joined: Dec 2024
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Driver School Candidate
Joined: Apr 2025
Posts: 15
Likes: 6
Yeah the 760 - 61 transmissions seem pretty robust. The Lexus dude said they never see them in for anything but fluid changes. I mention my poor shifting transmission in my highlander and he guessed the year and was off by 1 - he guessed 2004, mine is 2005. The dude that tried to sell me a new one appeared clueless as I doubt they'd ever serviced one. Now time to turn my attention to fun things like a possible sway bar upgrade 
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