First I had the no up shifting with cruise control on. They did a software update which solved the no up shift problem. But now it has a intermittent trailer hitching when coming to a stop. Sometimes it even makes a loud clunk noise when doing it.
When going 1 to 5 mph, the truck constantly lunges and revs a bit although I'm not touching my gas pedal. Extremely annoying and somewhat dangerous when trying to pull in and out of tight places / my garage, or backing up to something slowly. I have to keep on the brake because it will just try and lunge at anytime.
Vehicle would lurch when shifting from park into reverse or drive. Toyota dealer applied a TSB which updated the ECU firmware correcting this problem. This was a safety issue.
the vehicle will lunge forward when engaing the gear
The vehicle's engine rpm will advance up and down either when moving forward or in reverse while parking. Therefore, this only occurs during very low speeds (1 to 5 mph) This occurs regardless whether the engine is warm or hot and after placing the automatic transmission in gear. You can hear the clicking of some type of relay in the engine compartment when this occurs. I advise the technician of this problem during the 5000 mile servicing. They could not duplicate the problem, however I believe they are aware of the problem and do not have a fix.
- gcamacho,
Clayton, DE, US
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First I had the no up shifting with cruise control on. They did a software update which solved the no up shift problem. But now it has a intermittent trailer hitching when coming to a stop. Sometimes it even makes a loud clunk noise when doing it.
- Fred D., Champaign, IL, US