Excessive whine and front end vibration after installing TOD-off switch

[Triathlete]

It is also a good idea to find a dirt area a couple times a year and engage the 4l and drive around a little. If the system had never been used before by the previous owner that may have contributed to it sticking and not fully disengaging.

[blacksambo]

It is also a good idea to find a dirt area a couple times a year and engage the 4l and drive around a little. If the system had never been used before by the previous owner that may have contributed to it sticking and not fully disengaging.

Good advice, here.