4x4 Light on e53 m54 engine. No related codes on 1.4.0 HELP

[11b3v]

Hi, been trying to figure it out for a about a week with no results. The only Light is on is 4x4, no ABS, no Brake. JUST 4X4.

I just did service on Transmission with a full flush and filter. I also did take T-case off to see if there is a leak on the seal (No leaks). I didn't flush t-case, same fluid. Everything is plugged in, checked it 3 times. Did full left and right turn of the steering wheel, no results.

The only codes I get for T-case:

Oil abrasion 54C6
No CAN massage 55C4

And AWD works, I tested it while filling the transmission on the lift. All 4 wheels turn in D and Reverse.


Also on LCM green light is flashing constantly , all the lights work, but it keeps flashing when in Auto position. No LCM codes. NO Steering Angle sensor codes.

For some reason i think it's something has to do with leveling sensors that are on R front and R rear control arms. I just trying to figure it out.
Did the simple stuff, steering lock to lock. Nothing helped.

Can you help me out. Lead me to the right direction. I don't want to start throwing parts at it.

Thank you

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