Auto Systems and Repair

Ball joints link the suspension knuckle (which supports the wheel assembly) to the lower/upper control arm(s). They allow free movement in the suspension and aid in the steering of the vehicle.

Symptoms of Wear or Failure

• Suspension may make a knocking and/or squeaking noise over bumps
• Vehicle may wander
• Uneven tire wear
• Complete failure will result in the lower control arm becoming disconnected from the suspension knuckle, rendering the vehicle inoperable

Related Repair Advice

• The boot should be inspected during maintenance services to make sure it is not torn
• If possible, we recommend replacing ball joints as a set, especially on vehicles subject to heavy usage.
• In some cases, the control arm must be replaced in order to replace the ball joint
• Replacing the ball joints may affect the alignment's settings. We recommend a four-wheel alignment when the ball joints are replaced.