A failing ball joint can cause a number of symptoms that are easy to recognize. First, the vehicle may experience clunking or rattling noises when turning sharply, which is usually an indication that the ball joint has worn out and needs to be replaced. Additionally, it can also lead to increased vibration while driving as well as uneven tire wear due to misalignment caused by the loosened part. If left unchecked, a failing ball joint can even cause steering issues like difficulty in controlling the car or sudden jerking movements when turning corners. In some cases, there might also be visible signs such as excessive play in tires or looseness of suspension components where they meet with the wheel hubs. All these symptoms should immediately alert you about a potential problem with your car’s ball joints and necessitate immediate repair from a qualified mechanic for safety reasons.