Front wheel drive vehicles use drive axles (also called halfshafts) which are flexible shaft assemblies that transmit the rotational forces from the transaxle to the front wheel assemblies. The axle assembly is made up of an inner and outer Constant Velocity Joint (commonly called a CV-Joint) connected to an axle shaft. The inner joint is completely flexible and can move in-and-out as the suspension also moves. The outer joint is also flexible but cannot move in-and-out. These CV-joints are expensive, precision-made assemblies and are protected from the elements by flexible covers called CV-boots. If the boot becomes damaged or torn, the special CV-joint lubrication can run out and dirt, water and debris will get in, damaging the precision surfaces and quickly ruining the joint.
The CV-boots should be checked for damage every time the oil is changed and any other time the vehicle is raised for service. Heavy grease thrown around the inside of the front wheel(s) and on the front brake caliper can be an indication of a torn boot. Thoroughly check the boots for missing clamps and tears. If the boot is damaged, it should be replaced immediately. Please refer to for the procedure.