Recently bough a 2013 2,5 manual Hilux.
I feel that I need to use a lot of force on the transfer box lever when changing from 2H to 4H at speed. At stand still it is easy. Changing from 4H to 2H at speed is also easy.
Sometimes it helps to change 2H-4H-2H before taking of, then the next change in speed to 4H is easier - but not allways.
Yes, I am driving in a straight line when trying change from 2H to 4H.
The tyres are of same type and dimension. I have also recently changed all 4 wheels from summer- to winter-tyres, and this change dit not make any difference.
If it was a "transmission bind up issue" it also would be heavy to change from 4H to 2H?
I have tried different teqniqes, blipping the throttle, clutching, changing gearbox into neutral, turning the weel slightly side to side - but have not found that any of these make a difference.
Is it normal that there is a major difference in force needed on the transfer box lever at stand still versus at speed?
By the way: I love the fact that it is possible to change from 4L to 4H at speed, combined with the ADD disconect mod this make this drivetrain som practical and flexible