99 CDL Weirdness

[APKhaos]

Coming back on a 7 hour run from South Carolina to Northern VA, towing a fairly light trailer. All cruising at highway speeds. 1999 Hundy
Close to home, the YELLOW CDL warning light and the RED CDL warning light came up, along with the ABS light. OK, I'm 6' 4" and this would not be the first time I'd hit the CDL switch with my knee so I pulled off the highway to a quiet road. The center diff certainly felt locked. Managed to unlock it, and the yellow diff warning light went out. The RED diff warning light and the ABS light are still on, and I can't seem to clear them. Its driving fine, but I'm not sure what the RED diff warning is telling me. The ABS should have been disabled [ABS warning ON] when the center diff was locked, but should have been enabled when the diff was unlocked. Have shut down and restarted several times, but ABS and red diff light are still on.

Anyone have an idea what is going on here?

 

[Julian Stead]

Is the red diff light the rear diff lock light.

 

[yotasavg]

^ Correct, the red diff light is for the rear locker. It would be pretty weird for that to accidentally get engaged...

 

[APKhaos]

Yes, the red diff light is the rear locker. My OP should have been clearer about that.
And yes, its pretty weird that the rear locker is engaged. But it is, or at least the warning light is on for the rear locker and ABS.
Its easy enough to knee push the CDL engage button, but the rear locker can't be engaged inadvertently.

I've tried cycling the rear locker control ON and OFF with the trans in neutral and park, the transfer case in neutral, but the lights [ABS and RDL] stay on. Not sure what to do next to positively confirm that the rear locker is not engaged and to get those lights cleared.

 

[Julian Stead]

You will know if the rear diff is locked when you drive it, it will drag a wheel when cornering.

 

[APKhaos]

Does not feel like its locked. Turns are normal, far as I can tell on pavement.