A lower ball joint is a suspension component in your vehicle that allows the control arm to pivot. The ball joint is what keeps the wheel attached to the car, and if it goes bad, you will lose control of the wheel. This can be extremely dangerous, so it's important to know how long it will take to fix a lower ball joint if it goes bad.
The average time it takes to replace a lower ball joint is about two hours. However, this can vary depending on the make and model of your vehicle. If you have a complex suspension system, it may take longer to replace the ball joint. It's also worth noting that if you're replacing just one lower ball joint, you may be able to get away with less downtime than if you're replacing both lower ball joints.
If you're experienced with working on cars, you may be able to replace the lower ball joint yourself. However, this is not recommended unless you're confident in your abilities. Replacing a lower ball joint is not a difficult task, but it does require special tools and knowledge of how suspensions work. If you don't feel comfortable replacing the lower ball joint yourself, take your car to a mechanic or dealership and they'll be able to do it for you.