When a vehicle is stuck in the mud, the differential is temporarily locked so that power is transmitted to both wheels. (Otherwise, one wheel spins in the mud, and the other does nothing.) Ogura produces oil resistant solenoids suitable for the environment inside the differential housing. 

When a driver pushes a button to switch between 2WD and 4WD, power transmission to the set of wheels is turned on and off by electromagnetic clutch. Ogura produces oil resistant solenoids for electromagnetic clutch, designed to work inside the transfer case.

Depending on the road conditions, power distribution between front and rear wheels is adjusted by electronically controlled wet type multi disc clutch. This improves steerability and maneuverability in snow, for example. Ogura produces solenoids for electromagnetic pilot clutch.

When a 2WD/4WD vehicle is in 2WD mode, unless torque transmission is cut off between the driven wheels and driveshaft, the latter keeps turning and power is wasted. By cutting off the torque transmission in this reverse direction, gas mileage can be improved. Ogura produces solenoids for such electronically control.