Adjustment may be disturbed as a result of collisions, overloading, poor quality repairs or warped parts.
If you're feeling odd steering responses or bad behavior on the road, the first place to look is your tires. Although the tires themselves can wear out as a result of alignment problems, sometimes it is worn or poorly inflated tires that can cause you to proceed with an adjustment that does not exist.
Once you have eliminated all other causes, unload everything from the trunk (except spare tire), bring the tire pressure to normal and proceed with the adjustment. Since the adjustment requires high accuracy, it is almost impossible to carry out at home.