GX460 P2714 P0761 Ultimate Summary and Hope For A Fix Thread

[BlkGX2011]

Also, is it that high heat in the transmission fluid affects line pressure and creates additional wear on the clutches? I wonder if there is also a consideration of the line pressure during cold or hot temperatures and if that has to do with the fundamental problem.
Below are the snips from the repair manual regarding P2714 & P0761:
P2714:

P0761:

 

[sleepycruiser]

$2800 doesn’t sound crazy for a reman….what is the dealer labor if they did it I wonder?

 

[BlkGX2011]

$2800 doesn’t sound crazy for a reman….what is the dealer labor if they did it I wonder?

$2800 is probably unheard of. Its usually $3400-$3900. Im not sure what the labor rate is. I was planning to DIY this. Now I just need to fix techstream.

Since I have a tranny waiting for installation (when I have some availability), I put a bottle of shudder fix along with rechecking the fluid level. I can report back whether this alleviates my reverse issue when its colder out or reduces frequency of the codes popping up.

My fluid was also pretty dark. I believe it had a drain and fill done by the last owner, so this may only have 18k miles.

 

[yeLwWm]

I just picked up my remanufactured tranny from the dealership. I was lucky enough to encounter a 20% off deal from the dealership so after the core, price is $2800.

Kudos to you. I haven't had the guts to replace it myself in my garage yet.

$2800 sounds like a good price. Does that include the solenoids and valve body?

 

[Acrad]

I’ve seen it stated these remans are basically new besides the case and they include everything.

That price seems like something from a sale. I haven’t seen anywhere below around $3200 or so.

 

[BlkGX2011]

I’ve seen it stated these remans are basically new besides the case and they include everything.

That price seems like something from a sale. I haven’t seen anywhere below around $3200 or so.

Yeah. My reman unit has everything: torque converter, transmission pan, VB, solenoids etc. But I think you are correct about the casing bc I notice it doesnt have the same finish as the outside. All of the sensors and sensor bolts look new too.
It was during a sale. Bell Lexus of Scottsdale here in AZ has some of the best prices. They may have more sales near Thanksgiving or Christmas. I was able to get 20% off during an anniversary sale.

 

[DUDEINAGARAGE]

Hey all, finally get to post to a bit of figuring out on my end but in a nutshell, I work in a shop and have read almost every post on this thread.

We have a 2012 GX460 and a 2014 Tundra with the dreaded codes discussed. P0761/P2714 we are in Texas and while its warm right now these two came in fairly recently. The tech and I checked solenoids on the tundra valve body and found SLT to not work with load tests. We also believe yall are onto something with the heat.

He has specifically noted the GX not wanting to even manually shift after warming up and flat out refuses 3rd gear. We are trying to figure this out but any suggestions to help us take care of the customers is welcome!

PS: GX460 (as far as we know) is from texas and Tundra may be from Florida dude to customers area code.

 

[yeLwWm]

Update:

I really can't stand the problem of often getting stuck in third or fourth gear when the weather gets cold.

Last week, I spent $5,800 on a complete rebuild of the transmission, including the torque converter, clutch plates, etc. The valve body and solenoids were kept because I had recently replaced them. One-year warranty, 12,000 miles.

My conclusion is that once P2714/0761 recurs, rebuilding or discarding it is basically inevitable.

 

[StriderWolf]

Update:

I really can't stand the problem of often getting stuck in third or fourth gear when the weather gets cold.

Last week, I spent $5,800 on a complete rebuild of the transmission, including the torque converter, clutch plates, etc. The valve body and solenoids were kept because I had recently replaced them. One-year warranty, 12,000 miles.

My conclusion is that once P2714/0761 recurs, rebuilding or discarding it is basically inevitable.

So sorry… I know you were one of the first to do the solenoids, valve body and zip kit… super frustrating that didn’t fix it. Hoping the rebuild is the end of the issue for you.

Our 2011 GX460 now with 124k has been fine with sports shift and a few fluid exchanges for 20k and 2.5 years. Only issue we have encountered is steep incline/declines where it gets stuck in 3rd. Only a manual shift will get it out. Started 1 year ago and only has happened twice. This appears to be the beginning of a slow end for many.

After seeing everyone else tackle different items with some success or none, we figure our Transmission is likely far enough gone a rebuild or reman replace is eventually needed. The plan is to watch Lexus Parts website daily in hopes of a sale on parts for a reman. We fear eventually the part will stop being made. I could be wrong if it’s the same transmission in all GXs through the recent model update.

Looking forward to hearing what DUDEINGARAGE finds out for sure and hope the best for YeLwWm. For us, likely $6.5-7k. We figure we’ll keep it until 350k now and ensure we do the ATF every 50k/5years along with everything else. We just put in $3k on struts and shocks, so it’s now a keeper.

Only last thing we haven’t checked, I saw this 1-2 times on a few Toyotas and one GX was there is a wiring harness in the driver’s floorboard. A few have said the pins get rusty. With either cleaning it or replacing the damaged connector, that worked for a few. Worth a look, but I’d imagine it’s more than this.

I’ll report back once we pull the trigger on the reman.

 

[StriderWolf]

So sorry… I know you were one of the first to do the solenoids, valve body and zip kit… super frustrating that didn’t fix it. Hoping the rebuild is the end of the issue for you.

Our 2011 GX460 now with 124k has been fine with sports shift and a few fluid exchanges for 20k and 2.5 years. Only issue we have encountered is steep incline/declines where it gets stuck in 3rd. Only a manual shift will get it out. Started 1 year ago and only has happened twice. This appears to be the beginning of a slow end for many.

After seeing everyone else tackle different items with some success or none, we figure our Transmission is likely far enough gone a rebuild or reman replace is eventually needed. The plan is to watch Lexus Parts website daily in hopes of a sale on parts for a reman. We fear eventually the part will stop being made. I could be wrong if it’s the same transmission in all GXs through the recent model update.

Looking forward to hearing what DUDEINGARAGE finds out for sure and hope the best for YeLwWm. For us, likely $6.5-7k. We figure we’ll keep it until 350k now and ensure we do the ATF every 50k/5years along with everything else. We just put in $3k on struts and shocks, so it’s now a keeper.

Only last thing we haven’t checked, I saw this 1-2 times on a few Toyotas and one GX was there is a wiring harness in the driver’s floorboard. A few have said the pins get rusty. With either cleaning it or replacing the damaged connector, that worked for a few. Worth a look, but I’d imagine it’s more than this.

I’ll report back once we pull the trigger on the reman.

**UPDATE**

Ok, now we are thoroughly confused… When this all started, we figured it was some electrical issue or computer as we had the solenoids checked and the car is flawless after flashing the codes.

We have been religiously doing sport shift for 20k miles and about 2.5 years. No issues.

We have changed fluid out completely with Valvoline max life. Recently, we had a shop ensure we had the right level of fluid as it hesitated on an incline a month back to shift. During this time, they also replaced the battery and there was a $80 charge to reset/update the computer with a new battery. I was skeptical, but didn’t have time, plus the battery was on sale.

After getting the car back, I figured why not shift normal in our CO 40-50 mornings. Usually it flips a code 99% of the time. BUT it doesn’t and HASN’T!!! What?!?!

So is this the fluid? The correct level done by a Toyota shop? Or something with a new battery and it relearning shift patterns after coming from the hot south?

I am so confused….

 

[Davidsel47]

Thats a great find for $2800, I located a factory remanufactured transmission and they wanted $5200 installed. I just ordered a transmission from SW Engines, its off a salvaged GX with 74,000 miles and will have a 12w month 15,000 mile warranty. hopefully it works out. Transmission ran $1500 and the install will be $1500 to $1800.

 

[re_guderian]

... there was a $80 charge to reset/update the computer with a new battery...

Would need a LOT more detail about this. I mean, most ecu's get "reset" when you pull the power. An "update" would involve Techstream and new SW flashed from Toyota. Never heard of this for the transmission ecu. Did they provide any actual details on what they did?

 

[StriderWolf]

Would need a LOT more detail about this. I mean, most ecu's get "reset" when you pull the power. An "update" would involve Techstream and new SW flashed from Toyota. Never heard of this for the transmission ecu. Did they provide any actual details on what they did?

I don’t disagree on need more detail. Again, I am so so confused.

I’ve ruled out the correct level as we had this done Billy a legit Toyota shop.

In calling back the shop, I asked what was involved in the $80 charge for the battery replacement and computer thing. They said “over 40 diff computer procedures run off stored memory with the computer so with a new battery there can be issues if you simply replace.” I asked if the reprogram or updates and for more specifics. The scheduler went to ask a tech, a gave a generic answer. So not much info.

I’ll report back over the next few months, but my only thought is completely new fluid (Valvoline Maxlife), proper fill level, and something with the battery replacement changed how the computer shifts given it came from TX and landed in CO with us. It was very consistent with codes daily for over a year.

 

[re_guderian]

I don’t disagree on need more detail. Again, I am so so confused.

I’ve ruled out the correct level as we had this done Billy a legit Toyota shop.

In calling back the shop, I asked what was involved in the $80 charge for the battery replacement and computer thing. They said “over 40 diff computer procedures run off stored memory with the computer so with a new battery there can be issues if you simply replace.” I asked if the reprogram or updates and for more specifics. The scheduler went to ask a tech, a gave a generic answer. So not much info.

I’ll report back over the next few months, but my only thought is completely new fluid (Valvoline Maxlife), proper fill level, and something with the battery replacement changed how the computer shifts given it came from TX and landed in CO with us. It was very consistent with codes daily for over a year.

Man, I hope the new fluid and levels help!

I haven't had any codes, and I have a 2011 with 200K on the clock. Just had a fluid exchange done at my independent dealer a few months ago, first one that I know of in the vehicles history (I've had since ~145K). I wasn't having any symptoms, but the truck seems to shift better now. Who knows if real or placebo?

As you know, I'm a bit skeptical of the "southern states"/heat theories. Operating temperatures of the tranny are all still well above ambient, even in the hottest of summers here. And TX and FL are two of the 4 most populous states, with NY and CA being the other one. NY is not exactly the SUV/Soccer-Mom capital of the country, either. We'd need A LOT more data to really see if the failure RATE is higher than expected in these 2 states, or whether we're just seeing the results of higher sales and prevalence of GX's in hotter climates, and hence more absolute failures being reported.

 

[StriderWolf]

Man, I hope the new fluid and levels help!

I haven't had any codes, and I have a 2011 with 200K on the clock. Just had a fluid exchange done at my independent dealer a few months ago, first one that I know of in the vehicles history (I've had since ~145K). I wasn't having any symptoms, but the truck seems to shift better now. Who knows if real or placebo?

As you know, I'm a bit skeptical of the "southern states"/heat theories. Operating temperatures of the tranny are all still well above ambient, even in the hottest of summers here. And TX and FL are two of the 4 most populous states, with NY and CA being the other one. NY is not exactly the SUV/Soccer-Mom capital of the country, either. We'd need A LOT more data to really see if the failure RATE is higher than expected in these 2 states, or whether we're just seeing the results of higher sales and prevalence of GX's in hotter climates, and hence more absolute failures being reported.

So I know from our experience, it can’t be just fluid level as we did that 2 years ago. It has to be a combo of that, new fresh fluid and something with a computer system relearn.

I do recall taking the negative terminal off for quite a while 2 years ago, but that was before the new fluid and checking to level. The other “fun” part was the shop who did a transmission fluid service before we purchase left the Allen wrench in the transmission part one pushes in and holds down for an exchange. That was pulled out a year after we owned.

I’ll continue to monitor and if this somehow solves something great, but I don’t trust it yet and sucks in the event Lexus Remans go on a Black Friday sale this week. What are the chances! We’ll just wait until next year now and sport shift if codes start popping up again.

 

[Cold Iron]

As you know, I'm a bit skeptical of the "southern states"/heat theories. Operating temperatures of the tranny are all still well above ambient, even in the hottest of summers here. And TX and FL are two of the 4 most populous states, with NY and CA being the other one. NY is not exactly the SUV/Soccer-Mom capital of the country, either. We'd need A LOT more data to really see if the failure RATE is higher than expected in these 2 states, or whether we're just seeing the results of higher sales and prevalence of GX's in hotter climates, and hence more absolute failures being reported.

Actually NY is the SUV capital of the US

Most of the SUV's sold in the US are in the North. If the National Guard has to plow your streets you might need full time 4WD to haul your family around....

While many people think of Buffalo as getting the most snow Erie a few miles down the road in Pa. usually wins that award.

After Desert Storm we pulled into NY City on the aircraft carrier USS America. I was the Engineering Group Supervisor and supposed to lead my men from the forward engine spaces in the ticker tape parade that the good people of NYC threw for us. Told the skipper I couldn't do it and was going to stay on board. He was a bit taken aback and pressed me as to why. Because those of us that grew up in New York State took pride in being able to say that we never had set foot in NYC and I wasn't going to let the Navy screw that up for me. I can still say it.

When you say New York those that don't know better always think NYC. Up until the early 90's NY was second in dairy production only to Wi. Then those happy cows in California took over and they produce more pounds of milk annually than any other State. In the 70's and early 80's NY had more whitetail deer per square mile than any other State. Alabama took that over sometime in the early 80's and soon after that you could shoot a deer a day there. Because they are so small you can stick them in your game pouch and walk out of the woods with them instead of dragging them

 

[r2m]

Actually NY is the SUV capital of the US

View attachment 4037199

Most of the SUV's sold in the US are in the North. If the National Guard has to plow your streets you might need full time 4WD to haul your family around....

While many people think of Buffalo as getting the most snow Erie a few miles down the road in Pa. usually wins that award.

After Desert Storm we pulled into NY City on the aircraft carrier USS America. I was the Engineering Group Supervisor and supposed to lead my men from the forward engine spaces in the ticker tape parade that the good people of NYC threw for us. Told the skipper I couldn't do it and was going to stay on board. He was a bit taken aback and pressed me as to why. Because those of us that grew up in New York State took pride in being able to say that we never had set foot in NYC and I wasn't going to let the Navy screw that up for me. I can still say it.

When you say New York those that don't know better always think NYC. Up until the early 90's NY was second in dairy production only to Wi. Then those happy cows in California took over and they produce more pounds of milk annually than any other State. In the 70's and early 80's NY had more whitetail deer per square mile than any other State. Alabama took that over sometime in the early 80's and soon after that you could shoot a deer a day there. Because they are so small you can stick them in your game pouch and walk out of the woods with them instead of dragging them

WHAT?? California isn't even in the top 10??
Well, we're probably top's for EV's... AND chasing oil companies out of our state.

 

[StriderWolf]

And Black Friday pricing from Lexus.com… $800 off where we are, so a total of $3,000 for the reman transmission.

We had planned to buy, but with the codes mysteriously disappearing, we’ll wait until next year.

Best of luck to y’all who are buying one this week!

 

[r2m]

And Black Friday pricing from Lexus.com… $800 off where we are, so a total of $3,000 for the reman transmission.

We had planned to buy, but with the codes mysteriously disappearing, we’ll wait until next year.

Best of luck to y’all who are buying one this week!

At least the transmissions are available. A few years ago, folks on this forum couldn't fine one in the U.S.

 

[StriderWolf]

At least the transmissions are available. A few years ago, folks on this forum couldn't fine one in the U.S.

Available and discount!