2009 Toyota Tacoma Regular Cab Owners Manual - Page 193

2-4. Using other driving systems n Shifting to L4. VSC is automatically turned off. n Four-wheel drive usage frequency 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 n Caution while driving 2 When driving Never operate the front-wheel drive control switch if the wheels are slipping. Stop the slipping or spinning before operating. 173