Toyota 2009 Tacoma User Manual page 171

Shifting to L4.
n
VSC is automatically turned off.
Four-wheel drive usage frequency
n
You should drive in four-wheel drive for at least 10 miles (16 km) each
month.
This will assure that the front-drive components are lubricated.
CAUTION
Caution while driving
n
Never operate the front-wheel drive control switch if the wheels are slipping.
Stop the slipping or spinning before operating.
2-4. Using other driving systems
2
173