2002 250TE. I’ve scoured the search engine here and google, haven’t found anything quite like this. Recon has run fine since purchased in 2012, regularly serviced. Recently, some odd things are happening.

Will shift from neutral to 1st & 2nd normally with gear indicator lights properly illuminated. Shift to reverse, no indicator light, but runs in reverse. Shift to 3rd, 4th, 5th, no indicator lights but will run for awhile in higher gears, tho eventually 1st gear indicator will begin blinking, 12 blinks. Stop, cycle ignition, then can electronically shift back to neutral to restart.

First thing I did was check the batt, seemed a bit marginal on the VOM so had a local shop test. They said it needed a charge. Got a new one instead. Removed reduction gear cover, cleaned, lubed everything up with white lithium grease. Removed, cleaned, and lubed ECU connector with dielectric grease. No change.

Downloaded the service man, looks like I need to test the ECU and angle sensor. Any suggestions?