I tow using the sport function but still in Automatic.
This way the vehicle tend to stay longer in a current gear before selecting the next one. It is fully auto so it will select the gear which would be best for the driving cenario according to what the computer is programmed to do.
Going uphill it would gear down much quicker than if it would have been in normal drive.
It sometimes even selects 6th gear depending or the road.
Last trip we came back from Devoetpad Kloof and had a strong head wind.
The gearbox played by it self between 4th and 5th gear.
Sleep al jare met n auto ek verkies dit, en het nog nooit probleme gehad nie