Time for computer to "relearn" transmission?

[mfisher1967]

I have read several posts about disconnecting the negative battery cable overnight to force the computer to "relearn" automatic transmission and engine control. How many miles, or hours, of driving does it typically take for the computer to complete the process of learning after the negative cable is reattached to the battery?

I am mainly interested in late model Honda automatic transmissions, such as those used in the Civic and Pilot.

 

[ConfederateTyrant]

I believe it only takes a few driving cycles before it relearns. I would say after 30-40 miles it should have relearned everything.

 

[mfisher1967]

Can the computer relearn without having to disconnect the battery cable? For example, if you change over to another brand of ATF and shift quality changes, would the computer automatically adjust to the change?

 

[Hermann]

Lately I have been training my "fuzzy logic" Honda AT not to downshift so much on cruise control. I am using a hyper-mileing technique to do so. It is called DWL.(driving with load) While not on cruise control and going uphill do not push on the accelerator to maintain speed and do not let up while going downhill. I did this just out of curiosity, and by George (not Bush) it seems to work. On small uphill grades that don't last long, the AT is probably downshifting 40% less. Also several places on my regular commute where it always downshifted, it no longer does so. Somtimes instead of downshifting, only the Torque converter unlocks. Saving gas and wear and tear is a good thing. Kinda making the computer in the transmission do some good old fashion 0's and 1's crunching.

 

[unDummy]

Computer will learn without battery disconnect. But, it takes much longer.

Fuzzy logic seems to be easily confused when vehicle has multiple drivers.

Learning is complete when no new variables are thrown in to confuse drivetrain. Could be as little as a 100 miles, could be as long as 3000. It depends on multiple variables.