etl45 Posted March 15, 2008 Share Posted March 15, 2008 I have a 2003 ES300. The tranny started to shift a little rough. So i went to toyota and bought some ATF Type T-IV. Part #00279-000T4. I heard this is the Lexus OEM fluid. Correct? Did a simple drain and fill. Used about 3 and half quarts. Warmed the car up.. shifted threw the gears slowly and went for a drive. Little improvment? not much. Next step was, i heard that lexus had an update software for the tranny. so i got that done. after they said it might drive a little rough because it is learning my driving style. After the update and fluid change, i have drove about 300miles? It seems okay, but when going up a hill it seems to shift VERY rough! Did i do something wrong here? what can i do? my car has about 76,000miles on it! Do i just need to drive it more? Also didnt drive it for long periods of time after the service. maybe 10miles intervals. just back and forth from work. help please~~~~ thanks in advance! Quote Link to comment Share on other sites More sharing options...
dcfish Posted March 15, 2008 Share Posted March 15, 2008 I have a 2003 ES300. The tranny started to shift a little rough. So i went to toyota and bought some ATF Type T-IV. Part #00279-000T4. I heard this is the Lexus OEM fluid. Correct? Did a simple drain and fill. Used about 3 and half quarts. Warmed the car up.. shifted threw the gears slowly and went for a drive. Little improvment? not much.Next step was, i heard that lexus had an update software for the tranny. so i got that done. after they said it might drive a little rough because it is learning my driving style. After the update and fluid change, i have drove about 300miles? It seems okay, but when going up a hill it seems to shift VERY rough! Did i do something wrong here? what can i do? my car has about 76,000miles on it! Do i just need to drive it more? Also didnt drive it for long periods of time after the service. maybe 10miles intervals. just back and forth from work. help please~~~~ thanks in advance! Drive it on the highway and city trtaffic for at least 120 miles. It takes at least that long for the ecu to learn. Quote Link to comment Share on other sites More sharing options...
etl45 Posted March 15, 2008 Author Share Posted March 15, 2008 DO i have to drive 120miles at once? cause i drove about 300 or so.. but that is with in a 1 month period Quote Link to comment Share on other sites More sharing options...
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