2001 SR5 with multi mode t-case.

I’m at the end of a 5 day 4x4 trip with some friends and have been stuck in AWD since midday yesterday, and now I finally have cell signal.

Front driveshaft is locked in and I’m definitely getting power to the front end, but the 4wd dash light is either flashing or just off entirely, even though it’s in 4wd and the 4wd button is engaged. No problem shifting in and out of 4LO.

I can’t lock the center diff, or get it out of 4wd. Putting the shifter in the 2HI pos gets me a flashing dash light and will eventually cause a godawful squeal (sounds like worn out brakes). Stopping and turning the front driveshaft will cause it to lock back in to 4wd.

I’ll be home tomorrow and am going to clean it off and start troubleshooting, but am not sure where to start. I remember reading a good thread about checking the position switches on the tcase and front diff but I can’t find the thread.

Any ideas?