I changed the fluid on this transmission as part of regular maintenance. After any trans fluid change I like to reset the TCM with using a bi-directional scanner.
The process was a little different for this vehicle. It wanted the fluid temp to between 85-135F and wanted you to engage the parking brake, hold the brakes, put in D, and wait 5-10 minutes as the process completes. Will doing this I realized the AC was on so I turned the AC off this caused the idle to change slightly and the learn function to stop and the car jump out to gear into N.
This is a drive by wire transmission. The car would then only go into P and N and no other gears. I turned the car off and started again, I scanned for any error codes and None were displayed. I could not reset the TCM again because the car had to be in D. After a couple minuted I decided to disconnect the battery.
It took unhooking the battery to reset everything back to normal but that sure was a unsettling feeling and made me wish for a cable driven shifter.
Moral is, make sure everything is off before you start and do not touch anything when a learn process is in progress.
The process was a little different for this vehicle. It wanted the fluid temp to between 85-135F and wanted you to engage the parking brake, hold the brakes, put in D, and wait 5-10 minutes as the process completes. Will doing this I realized the AC was on so I turned the AC off this caused the idle to change slightly and the learn function to stop and the car jump out to gear into N.
This is a drive by wire transmission. The car would then only go into P and N and no other gears. I turned the car off and started again, I scanned for any error codes and None were displayed. I could not reset the TCM again because the car had to be in D. After a couple minuted I decided to disconnect the battery.
It took unhooking the battery to reset everything back to normal but that sure was a unsettling feeling and made me wish for a cable driven shifter.
Moral is, make sure everything is off before you start and do not touch anything when a learn process is in progress.