Automatic Transmission Control Module Problems of Toyota Tundra

When attempting to move forward from a stop, there is a momentary delay in the truck responding to stepping on the accelerator pedal. This is a real safety concern when attempting to pull into traffic, as the "dead spot" in the pedal occurs after the truck has already moved forward a few feet, leaving the front end of the truck out in the traffic lane. It appears to be related to the automatic transmission starting in 4th gear, as I can move the shift lever to manual shifting mode and start out in 2nd gear with no hesitation. Once moving I simply move back to drive mode. This has been an ongoing concern, reported from the first service (10k) on my truck, which now has 45k miles. I received the remedy engine at 37k miles under the safety recall. Toyota seems to be aware of the issue, as they flashed the tcm once, which seemed to help briefly, however the problem quickly returned. I am not the only Tundra owner reporting this issue.

See all problems of the 2022 Toyota Tundra 🔎.

At certain times, when coming to a stop, and then attempting to proceed, the throttle with delay or lag from a stop. This has happened since the start of ownership in Feb 2022 up until today. Toyota has issued on previous technical service bulletin (TSB) - t-sb-0111-22 - that Toyota states should resolve an issue with "hesitation from stop and surge concerns". The tcm -transmission control module - logic has been modiwed to address these conditions. According to Toyota, this updated logic should keep this from happening. This TSB was released December 16, 2022. To date, this issue continues to occur. The only way to keep it from happening is to reset the tcm learning. This requires the battery to be unplugged for an extended period of time. There was a subsequent tcm logic update for recall 24ta02 (NHTSA campaign number 24v125000). It would seem that this tcm logic update has actually caused this condition to be present more often. This is something that we have expressed to our service consultant at every visit and it is still occurring over two years later. We have had this happen multiple times while attempting to proceed through a 4-way stop, as well as trying to merge into tra`c in slower moving city streets. There are members of an online forum who have been able to record the data aow and show when and how the delay occurs. Other than December 2022 TSB, Toyota has not acknowledged this issue even though it continues to occur on the my22+ Tundra/my23+ sequoia, as well as the my18+ Lexus LS 500. I am lead to believe this is a result of the programming for the direct shift 10- at from aisin/Toyota and/or the v35a-fts, both type '17 (LS 500) and the type '21 (tundra/ sequoia).

At certain times, when coming to a stop, and then attempting to proceed, the throttle with delay or lag from a stop. This has happened since the start of ownership in Feb 2022 up until today. Toyota has issued on previous technical service bulletin (TSB) - t-sb-0111-22 - that Toyota states should resolve an issue with "hesitation from stop and surge concerns". The tcm -transmission control module - logic has been modified to address these conditions. According to Toyota, this updated logic should keep this from happening. This TSB was released December 16, 2022. To date, this issue continues to occur. The only way to keep it from happening is to reset the tcm learning. This requires the battery to be unplugged for an extended period of time. There was a subsequent tcm logic update for recall 24ta02 (NHTSA campaign number 24v125000). It would seem that this tcm logic update has actually caused this condition to be present more often. This is something that we have expressed to our service consultant at every visit and it is still occurring over two years later. We have had this happen multiple times while attempting to proceed through a 4-way stop, as well as trying to merge into traffic in slower moving city streets. There are members of an online forum who have been able to record the data flow and show when and how the delay occurs. Other than December 2022 TSB, Toyota has not acknowledged this issue even though it continues to occur on the my22+ Tundra/my23+ sequoia, as well as the my18+ Lexus LS 500. I am lead to believe this is a result of the programming for the direct shift 10-at from aisin/Toyota and/or the v35a-fts, both type '17 (LS 500) and the type '21 (tundra/sequoia).

At certain times, when coming to a stop, and then attempting to proceed, the throttle with delay or lag from a stop. This has happened since the start of ownership in Feb 2022 up until today. Toyota has issued on previous technical service bulletin (TSB) - t-sb-0111-22 - that Toyota states should resolve an issue with "hesitation from stop and surge concerns". The tcm -transmission control module - logic has been modified to address these conditions. According to Toyota, this updated logic should keep this from happening. This TSB was released December 16, 2022. To date, this issue continues to occur. The only way to keep it from happening is to reset the tcm learning. This requires the battery to be unplugged for an extended period of time. There was a subsequent tcm logic update for recall 24ta02 (NHTSA campaign number 24v125000). It would seem that this tcm logic update has actually caused this condition to be present more often. This is something that we have expressed to our service consultant at every visit and it is still occurring over two years later. We have had this happen multiple times while attempting to proceed through a 4-way stop, as well as trying to merge into traffic in slower moving city streets. There are members of an online forum who have been able to record the data flow and show when and how the delay occurs. Other than December 2022 TSB, Toyota has not acknowledged this issue even though it continues to occur on the my22+ Tundra/my23+ sequoia, as well as the my18+ Lexus LS 500. I am lead to believe this is a result of the programming for the direct shift 10-at from aisin/Toyota and/or the v35a-fts, both type '17 (LS 500) and the type '21 (tundra/sequoia).

The 2004 Tundra is available with a fully extended cab, which I own. This model uses a different electronic/mechanical mechanism to shift gears than other models. With 1200 miles on the 2004 Tundra I realized there was a problem if you shift from overdrive to 3rd gear to slow down while going doan a hill, then shift back to overdrive, the transmission will fail to switch. There is a button you drpress on the steering shift knob that electronically shifts in and out of overdrive. If this button is briefly tapped to switch gears, this will cause the transmission not to shift back. Instead, it will reverse so that when the dash light says you are in overdrive you actually are in 3rd gear. When the light says are out of overdrive you are in overdrive. The dealer was able to replicate this problem. They checked with factory and there were no other incidents of this. The dealer did not know why they used a different shifting mechanism from one cab design to the other (extended). The service report was written and states this condition as being a normal operating condition at this time.

See all problems of the 2004 Toyota Tundra 🔎.