SC 430 Transmission Problems

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Aug 16, 2017 | 09:07 AM

#46

leaderpvp

Rookie

Joined: Aug 2015

Posts: 69

Likes: 2

From: Dan

Quote:

Originally Posted by Bgw70

Here is the procedure to Change the fluid in 2006-2010 transmission, certainly more involved but not that difficult. https://www.clublexus.com/forums/att...sion-steps.pdf
i changed the fluid in a 2010 Camry and the transmission was designed the same. I did it like this, removed one of the transmission lines from the cooler and drained 2qts, refilled 2qts. Repeated these steps until the fluid came out clear red.
25k miles later and no issues.

Yeah, this procedure is for closed tranny which does not have deepstick and so on. formaly known as not needed fluid change

The flush is done to these by circulation fluid. just push new fluid in until the fluid comes out fresh enough to your linking.
Mine is not sc430, mine is sc400 1993 4spd AT, but the issues are mostly the same ;-)

Mar 9, 2018 | 05:21 AM

#47

Bette1214

Driver School Candidate

Joined: Jan 2018

Posts: 4

Likes: 1

From: Fl

Not going forward

Quote:

Originally Posted by cssc

I have a 2002 SC 430 with 68,000 miles on it. Is anyone having problems with the transmission? Today, I could not go forward in any gear...could go in reverse. I turned off the ignition and re-started the engine, then the car worked fine.

Tonight I went out and the car was fine. However, later had the same problem.

Can anyone shed some light on this?

Thanks.

I had that problem everyone wanted to place a new transmission it was the battery if the battery gets low car won' Go forward change battery first. Trans was fine.

Mar 9, 2018 | 05:23 AM

#48

Bette1214

Driver School Candidate

Joined: Jan 2018

Posts: 4

Likes: 1

From: Fl

Quote:

Originally Posted by Bette1214

I had that problem everyone wanted to place a new transmission it was the battery if the battery gets low car won' Go forward change battery first. Trans was fine.

I aas lucky someone told me that saved me thousands.

Mar 9, 2018 | 05:37 AM

#49

Jabberwock

CL Community Team

Joined: Sep 2009

Posts: 3,916

Likes: 227

From: Alabama

A faulty engine ECU can also be the cause of some types of AT issues. A careful look at error codes by a skilled tech with lots of Lexus experience is a good idea when the AT appears to have issues.