The transmission in my 2010 SR5 always seemed a little "slushy". When I was rolling along in the parking garage at about 5 MPH with the transmission in second gear, it always seemed like it took excessive RPMs (about 1k) for the transmission to hook up. It almost felt like I had a stall converter in the transmission.
Hey Westwind..could you share the TSB number and information for others who may benefit from it?
Thanks!
Think it was SeattleMike who first found it....
T-SB-0166-10 6/29/10
Quote:
Some vehicles may exhibit a harsh shift on acceleration below 20 mph during the 2-1 downshift on vehicles equipped with an A750 transmission. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) calibration has been revised. Use the following repair procedure to address this condition.
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below:
2WD JTEZU5JR#A5001122
4WD JTEBU5JR#A5002648
This repair is covered under the Toyota Federal Emission Warranty, which is 96 months or 80,000 miles.
I read through the 10 page long transmission shudder thread and it made me wonder how many of us have this issue and how many of us got it fixed. Hence the poll.
Yep, this was fixed via a TSB reprogram/flash. Would drive me crazy when turning onto a street, pressing the gas, the engine would rev and the 4R would just sit there and be like, 'you want me to do what?'. After the fix it drives exactly how it should, night and day.
Think it was SeattleMike who first found it....
T-SB-0166-10 6/29/10
Quote:
Some vehicles may exhibit a harsh shift on acceleration below 20 mph during the 2-1 downshift on vehicles equipped with an A750 transmission. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) calibration has been revised. Use the following repair procedure to address this condition.
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below:
2WD JTEZU5JR#A5001122
4WD JTEBU5JR#A5002648
This repair is covered under the Toyota Federal Emission Warranty, which is 96 months or 80,000 miles.
[MENTION=48776]dekeman[/MENTION] Would you please tell me how to substantiate the 96/80k wty you speak of? I'm going to get this done, and I want to go in prepared.
[MENTION=47784]westwind77[/MENTION] I had to laugh at your description. Mine does exactly this in my parking garage, and around corners.
Think it was SeattleMike who first found it....
T-SB-0166-10 6/29/10
Quote:
Some vehicles may exhibit a harsh shift on acceleration below 20 mph during the 2-1 downshift on vehicles equipped with an A750 transmission. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) calibration has been revised. Use the following repair procedure to address this condition.
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below:
2WD JTEZU5JR#A5001122
4WD JTEBU5JR#A5002648
This repair is covered under the Toyota Federal Emission Warranty, which is 96 months or 80,000 miles.
[MENTION=48776]dekeman[/MENTION] .... or anyone .....
... have a copy of this TSB you can post? I assumed there would be a link to one in the stickies, but there is not.
Thanks for posting it! It only covered the 1st few thousands 4R's Toyota made (of the 5th's). I figure most people have had this taken care of, especially into 13' already. It could not imagine driving the 4R with the same issue for this long, it would have been replaced!
Even though the TSB does not specifically address the issue you described and the one I had, it fixed it.
My '13 has harsh shifts at low speeds, I wounder if this TSB will apply to mine, since you said it only covers the first few thousand.
Although, just because toyota is aware of an issue, doesn't mean they will fix it for newer models...they still haven't fixed the driveshaft clunk issues that they have known about since the 3rd gens....