I changed spark plugs to see if misfires were making the code pop up, I got the transmission oil changed 3/4 months ago and quite a few other things but I think it's time to just buy the solenoid and get it changed out.

Where can I buy a
Torque Converter Clutch Pressure Control Solenoid for code p2757 ?

 

I found this video that may benefit you, as the IS is similiar if not identical to the GS. As for the part, the part number he posted in the video I checked on ebay and theres a bunch of sellers who have oem at a good deal. But beware of fake products on ebay, buy from a reputable seller, and I would go to the dealer and check with vin number to make sure the solenoid part number is correct for you.

 

Could this be it?

https://parts.lexus.com/p/Lexus_2007...529034010.html

 

I would go to the dealer to the parts department, to verify the solenoid. Write down the part number, order it online or from them. I wouldnt drive the car with a bad solenoid as you can easily destroy the transmission

 

Actually I just viewed the video for the is250 and its same exact part number. So go for it and order that solenoid

 

I've been driving it quite a bit even with the p2757 code, but i do plan on going in ASAP. The car hasn't shifted that bad, every now and then it sometimes slips, but it really hasn't been as bad and I thought the code was faulty cause it would come on and off quite a bit.

 

I changed the solenoid and nothing fixed it actually feels like it got worse

 

New solenoid and not fixed, then, it's unlikely the solenoid was at fault.
if running out of suspects, maybe remove the ECU and have it serviced. The ECU controls the operation of the solenoids in the tranny.
it seems to be common to 3GS to shift harshly between 1st and 2nd in stop-go traffic, many have had that problem fixed by having the ECU serviced.
My 06 GS300 AWD had that 1st-2nd hard shift problem too. I removed the ECU, took out the PCB, and reflew all major solder joints on it, and that totally fixed the hard shift problem.

 

The 2006 GS300 does have ecu flaws, but the 2007-up is a lot less.

Its plausable that the ecu with the transmission module inside has some sort of an issue. Could be corroded wiring, broken wiring, could be a bad ground, etc. But I would take it to a transmission shop that specializes on toyota/lexus. This way they can properly diagnose the issue, without throwing parts at it in hopes of a fix.

 

what solenoid did you buy? If it’s the slt one it’s def not it, the SLU solenoid is the “main one” which closes and opens pressure to torque converter. P2757 is a code for the SLU, p2714 is a code for the SLT. You could have just replaced the wrong solenoid. I also wouldn’t recommend buying oem since your car is already high mileage I suggest you buy from rock auto it’s a lil cheaper. I had the same code but I was able to control the solenoids with my scan tool. I noticed you said you’re a college kid which I am too and if you decide to get the SLU solenoid and it doesn’t work your cooked bro 😪 the torque converter would be next then the whole assembly it’s not worth it. Check your codes again. If you go to shop they’re gonna tell you to replace your tranny.

 

New solenoid and not fixed, then, it's unlikely that the solenoid was at fault.
if running out of suspects, maybe remove the ECU and have it serviced. The ECU controls the operation of the solenoids in the tranny.
it seems to be common to 3GS to shift harshly between 1st and 2nd in stop-go traffic, many have had that problem fixed by having the ECU serviced.
My 06 GS300 AWD had that 1st-2nd hard shift problem too. I removed the ECU, took out the PCB, and reflew all major solder joints on it, and that totally fixed the hard shift problem.
Not saying servicing the ECU would definitely fix P2757, but, as the ECU governs the solenoids operation, and the solder joint failure in it has been known to be cause of transmission issues, it seems to make sense to make it the next suspect.

 

This code can be triggered by SLU shift solenoid, valve body problems or torque converter clutch assembly.

 

I had lexus change the solenoid and driving away from the dealership the check engine came back on, I took my car back the very next morning and when I took it back to lexus they said my clutch basically exploded and they found clutch material in my transmission oil pan. Which to me doesn't make sense because if it was really broken like that then I imagine they would have found clutch material when they changed the solenoid, or when they changed the trans oil twice in the last 8 months.

Also I had them change the front cover seal, not sure if that would have had any connection to the trans or not.

They are trying to argue that because they didnt diagnose it, it was my fault and they won't recover rebuilding the transmission.

In the last 15k miles since i bought the car the check engine code for p2757 came on and off irregularly, and every once in a blue moon the clutch would slip a tiny bit but not super bad.

In that time I had taken the car to AMCO 3 times and they did their free transmission checks(not sure if they actually take the pan off or not) I had jiffy lube change the tmf once and lexus change the tmf.

This last time I took it to lexus i asked them what they thought about tmf additives and they said they didnt recommend, so i told them not to put it in. They put it in anyways. And are saying thats one of my mistakes...

I've brought my car to this same lexus service shop probably 6 times for oil changes and repairs in the last 4 months.

I've told them at least 3 times that the transmission was acting a little strange. I told them that it had a transmission code that would come off and on.

I said I didn't want them to do a full diagnostics because it's too expensive and I'd like to just change the solenoid first and if it doesn't fix the problem then I would do the full diagnostics. For some reason(I'm not sure) on my receipt they show a transmission fluid flush(not a drain and fill) so when they went to change the solenoid they flushed it(which could have caused problems) and they cleared the codes.

Then I came and picked the car up and on the drive home the car did not drive very well at all and the transmission code came on after only a few miles of driving, and it didn't come off and on like normal it came on and stayed on and I cleared it 2 times and every time without fail it turned back on consistently. The clutch slipped a lot more and I distinctively smelled a burning smell everytime I stopped and got out of the car. One time when shifting into reverse it had a very rough shift aswell. All of these being things that DID NOT happen before they "changed the solenoid like the customer requested" also all of these happened within 48 hours of picking up the car and less than 100 miles of driving, and I brought it right back to lexus in that same time. I feel like lexus jipped me here and I'm pretty upset.

1. If they test drove the car they would have instantly known there was a problem and let me know. Instead they either didnt test drive it, or just cleared the codes and let me pick it up trying to hide it.

2. They put in the tmf additive anyways agianst their OWN recommendation, and after i agreed and said okay nvm dont put it in.

3. They did a transmission fluid flush not just a drain and refill without telling me. And they did the flush when they changed the solenoid so if there really was physical clutch damage wouldn't that have come out with the flush? Not when they dropped the pan after they let me drive away with a practically destroyed transmission?

This is all i know for now.

Im going to ask them to diagnose why the clutch actually broke and go from there. A small amount of slip isnt going to cause catastrophic problems over night.

not sure if its possible to even put a solenoid in wrong, but even if that wasnt the correct part that needed to be fixed it shouldn't have caused MORE problems.

I'm going to request that they cover the damages and im going atleast try to uncover why this happened and what's best to do about it for future people. They quoted me $3.3k to rebuild the transmission(even with employee discounts that I get) which is another reason why it'd be better to try to hide their mistake, if they made one, and not try to say it was all on me because I didn't want to pay like $650 for a full transmission diagnostics.

If you have any ideas, thoughts or advice please let me know.
Or if you would like any more info lmk

Thank you.
if there are lexus admins here help would be appreciated too😂
@Lexus

 

Bummer man! Not what we wanted to hear. I dont think complaining to lexus will help get you anything done, as its an older vehicle. The bright side is you can buy a used lower mileage transmission for probably lower then $600. If you Search around for a good toyota/lexus mechanic and see how much they will charge to swap a transmission. It shouldnt be difficult to swap out the transmission and a shop couldnt probably finish the job in less then 5 hours.

Theres a site called www.car-parts.com it will help you search salvage yards for a used transmission. When you do install the new/used transmission I would only stick to toyota WS fluid, with a oem filter.

 

Heres a transmission in las vegas from keystone auto salvage has low mileage, maybe they will ship to you. But usually keystone is good with there parts, there fast and reliable. At $400 for 69k miles thats a steal

2010
Transmission Assembly
Lexus GS350 NR,A.T.; AWD 69,656 A $W09333 $400 LKQ-Keystone-Las Vegas USA-NV(Las-Vegas) 1725salesmanagement@lkqcorp.com?subj...Postal%2084001 800-551-5331