Do 4x4 systems randomly fail at random points in trucks?

According to recent extended insurance stats for 4-wheel drive vehicle, one in every 100 vehicle with 4-wheel drive will have some type of issues.

This stems from excessive use to lack of maintenance.

The 4 x 4 system is a mechanical part of your vehicle and like anything else on your truck, it can fail. However, the most likely places for failure to occur are the transfer case, the drive shafts and universal joints, the differentials and the front hubs. If your vehicle has hubs that can be locked and unlocked it is a very wise idea to do periodic maintenance on these. Check your front differential for proper lubrication as well as the constant velocity joints on the front drive shaft. Be sure to maintain proper lubrication in the transfer case. If you operate the transfer case properly and do routine maintenance on the vehicle it should give you a great many miles of service. Good luck.

Yo' you probably have a short in the wire that runs down to your front axle. Or bad actuator or solenoid Does it have auto 4wheel ? better get it fixed b4 the snow comes!!!!

it is a mechanical system so it could fail at any time, Do routine maintenance and don't abuse it and it should last a long time,