Thanks!
Just my thoughts!
Found today a loose connector to the relay in the relay box. Pushed it in place and now the 4x4 is working again.

Hello,
I have a CForce 520 2018.
Now the 4x4 dont kick in.
If I push the 4x4 button I cant hear any klick in the relay and no sound from the motor on the diff.
Anyone know anything about This problem?
Thanks