I have about 2700 miles on my Tacoma with auto trans in drive and reverse it surges enough to see it on the tach. this is when idling to park or just rolling no throttle. it also sometimes has a harsh downshift just before stopping.in normal driving I do not like how the trans shifts its very vague and unresponsive. I took to dealer Tuesday feb 2 they said there was no fault codes and would have to keep over night because trans must be between 113 and 120 degrees to scan for fluid level. since there is no dip stick .Wednesday feb 3 dealer said they could not duplicate surging but the trans was 3/4 quart low they topped off trans. I drove it home and it still surges. I am not a happy camper. i hope there is a fix for this issue soon
I'm getting delayed shifts from reverse to drive, lurching in reverse (scary when trying to back out of the garage with little margin for error), hard downshift with a neutral then gear slam... then noticeable upshifts. I took a different tacoma home from the deader (same model with extra features). The transmission shifted significantly smoother and it didn't lunge or slam into gear when warming up or periodically under normal driving conditions as mine does atlas once a day.
The dealer told me my fluids were good, they reset the trans learning my driving habits, and to bring the vehicle back in if I continue to have issues.