4x4 light flashing

I was off road and hit a pretty good size hole and heard a pop. Then when trying to get into 2h it wouldn't go. After going R N F moving and not moving still wouldn't go into 2H. After pulling the fuse its now in 2H but the light is still flashing and wont go into 4H or 4l. Is there a way to tell if the interior switch is bad? Should I disconnect battery?

 

You may find some info here
https://www.tacomaworld.com/threads/transfer-case-transfer-cases-in-first-and-2nd-gen-trucks.345652/

 

This one.
https://www.tacomaworld.com/threads/how-to-trouble-shoot-4x4-actuator.263525/

 

Anyone know where to get an oem front diff actuator? Local dealer is $450. They cant even look at my truck till mid Dec. My other shop doesn't do 4 wheel stuff. Looks like i may have to do it myself. I am able to get it in and out of 4 wheel but only after shutting on and off ignition. 4l is still flashing and beeping.

 

If it’s 4lo then it’s somthing in the transfer case and not the front add

 

Uugh. I thought it might be add because it sterted to work after i tapped on it and checked to connection.