Suzuki Grand Vitara 99011-66J22-03E - Manual (Page 170)

6-11
OPERATING YOUR VEHICLE
66J22-03E
4H LOCK (4-wheel drive high range center differential lock)
64J221
In this position, engine power is supplied to
the front and rear axles and you get better
traction than when driving in “4H”. Use this
position when you need better traction
than “4H” provides, such as when driving
on slippery roads etc.
Using the Transfer Switch: 10