TRNW-2: UA80F U881F Locked up?

Tod Chretien tod at trnw.net
Fri Feb 21 07:47:56 PST 2025


Are there any codes? How does the fluid smell? Sounds strange that there 
would be no input shaft movement in P/N and still have it bind-up in 
drive gears. I don't think too many of us are 'up on that unit' yet. We 
have only worked on one and it was just a leaker.


My guess would be one of the clutches are smoked and welded.


-- 
Best Regards,
Tod Chretien
TRNW Inc.
https://www.trnw.net


On 2/21/2025 7:11 AM, Dan Hogan via trnw2 wrote:
> 16 Lexus RX350 AWD UA80F U881F 88K
>
> Anyone see one of these bind up and cause no movement driven?  No 
> input shaft rotation (via speed sensor data) under all conditions.
>
> Neutral you can push vehicle forward and reverse, but any driven gear 
> feels like its in park or bound up.
>
> Park appears to be old-fashion linkage and I can't think of any other 
> explanation besides something seized in unit, but we are not up on 
> these units yet.
>
>
> ---
>
>
> Dan Hogan
>
> Buster's Transmission Service
>
> https://busterstransmission.com <https://busterstransmission.com>
>
> 704.847.5321
>
>
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-- 
Best Regards,
Tod Chretien
TRNW Inc.
https://www.trnw.net
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