Transmission Woes
Trans showed service needed so into dealer who tested for glycose said all was good. 1week later it did not seem to shift right so back to dealer to see if programing needed they said all was right. Kept getting service needed but being dealer said all was OK just cleared codes. 2 weeks later on highway trans just QUIT -- no nothing!! Towed to dealer who diagnosed trans shot antifreeze had mixed with fluid estimate repair $4k?? Towed to indy. repair shop I trust found a used trans. received with a frozen pump replaced pump . Trans and new radiator installed and this trans. is shifting HARD. I think it may need a tranny reset software but I do not trust dealer and not sure if indy shop is capable. Have TOO much invested to quit or part out, what to do???
- SuperHerman
- Posts: 1798
- Joined: 01 Dec 2014, 13:28
- Year and Model: 2004 & 2016 XC90
- Location: Minnesota
- Been thanked: 207 times
I would start with a transmission adaptation/relearn. Your Indy should have done this - it is not complicated.
Ask your Indy if they did this and successfully achieved all the shift points. For sake of this post I will assume they did not. So, ask your Indy if their diagnostic computer can reset the car and place it into the proper state to do the process. VIDA can do this as can most modern higher end diagnostic computers shops own. From this point you can have them complete the test or do it yourself, although it can take some time and requires certain road conditions. Basically though once the car is put into the relearn mode all that is required is drive x speed and receive light, drive x speed and receive light ... The car cannot be turned off during the process - it has to be completed, or one has to start over.
Essentially when the car is placed in "learn" mode and one drives through the steps, until a light is lit on the dash for each shift point, reflecting the transmission has learned the correct shift point, the transmission computer gets set correctly. This is your base level, after that the "fuzzy logic" software further adapts to your driving style. I am guessing this was not done and your transmission computer still has the old learned shift points of the removed dying transmission. Over time, in theory, the car's transmission computer should relearn, but this is not optimal and could cause additional wear.
At this point I suggest you use the search feature to read about the computer adaptation/relearn and once you have a grasp of what is going on contact your Indy and proceed as described above.
Hopefully this will solve your issues. It is the place I would start with - and shouldn't cost you anything (or a minimal amount).
Ask your Indy if they did this and successfully achieved all the shift points. For sake of this post I will assume they did not. So, ask your Indy if their diagnostic computer can reset the car and place it into the proper state to do the process. VIDA can do this as can most modern higher end diagnostic computers shops own. From this point you can have them complete the test or do it yourself, although it can take some time and requires certain road conditions. Basically though once the car is put into the relearn mode all that is required is drive x speed and receive light, drive x speed and receive light ... The car cannot be turned off during the process - it has to be completed, or one has to start over.
Essentially when the car is placed in "learn" mode and one drives through the steps, until a light is lit on the dash for each shift point, reflecting the transmission has learned the correct shift point, the transmission computer gets set correctly. This is your base level, after that the "fuzzy logic" software further adapts to your driving style. I am guessing this was not done and your transmission computer still has the old learned shift points of the removed dying transmission. Over time, in theory, the car's transmission computer should relearn, but this is not optimal and could cause additional wear.
At this point I suggest you use the search feature to read about the computer adaptation/relearn and once you have a grasp of what is going on contact your Indy and proceed as described above.
Hopefully this will solve your issues. It is the place I would start with - and shouldn't cost you anything (or a minimal amount).
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