Options2k

I would like to replace the transmission fluid in my 2006 SC and do the mod to make shifting firm. I have read a few threads that post pictures of the pressure regulator dial in pre 06 to firm up shifting. One such thread is this. However, I have not come up with any for 06+ transmission. Can someone please confirm that this is possible in 06 and post a picture of the pressure regulator dial including it's location.

Thanks.

bacardi11

iTrader: (1)

the only way is to drop the pan and look.

Options2k

Yes. I recently replaced fluid in my 2006 GX "sealed transmission". Posted a write-up in the GX forum. Drives smooth as silk with 103k miles on the odometer - knock on wood

Bacardi: i will be doing that soon. Just need some guidance on where to look. I have a hunch that the dial is not in the same location as pre 06 models.

Does anyone have a repair manual for a 06+? Talwang posted a picture for a 2002-05....could use one for a 06+.

Thanks.

bacardi11

iTrader: (1)

options
when you drop the pan. look at the driver side of the valve body. then came back on the forum and tell us what you see.

rudyH

That's a pretty cool document!

Options2k

I found the transmission in 2006+ is A761E, a 6 speed floor shift. I did NOT see a pressure regulator valve dial on the DS. However, there is similar looking dial on the PS.....it is on the front side, towards the engine. Now what? Is the procedure same....can someone please confirm.

Thanks.

Options2k

I have attached the pictures of the pressure control solenoid D (SLT) on my 2006 GX 470 (first image) as well as on my 2006 SC 430. The two transmissions are very similar in layout. SLT on both of these valve bodies is on the PS towards the front of the vehicles. The pictures show the position as originally intended. I adjusted the solenoid one click clockwise on my SC and drove the car for about a week. Did not notice any difference in shifting so went ahead and moved it to the middle like I found it. At least for me, the 06 SC (six speed) shifts firmly without any noticeable lag so I am keeping it the way Lexus intended it to be!

Cheers.

kuWuPt

iTrader: (13)

Interesting, thanks for the pics Options2k, when I did it on my 02 mine was not in the middle it was on the first notch. Maybe from factory your's is set a little stiffer, which would explain the middle setting. I did reset my ECU and after a week or so my mileage had improved considerably, did not feel the faster shifts but noticed that the transmission shifted faster by looking at the RPM.

Options2k

Thanks KuWuPt. I did not notice any change in shifting....mileage may have improved a bit. Honestly, I was just nervous leaving it different than how I found it so when I didn't notice any change in shifting, I moved it back.

On a different note, the fluid on my GX was quite dark when I changed it at about 103k miles. Made a huge difference in how smooth it shifted after the change (went over the fluid change 4 times). In contrast, the fluid still had a lot of red when I changed it in my SC at about 69k miles. Did not notice any significant "smoothness" in shifting.

Cheers.

kuWuPt

iTrader: (13)

If you didn't notice a difference then it's not worth it.. peace of mind is way more important.. to me at least.