What could be the cause of rotted on a CV boot?

The most common problem with the CV joints is when the protective boot cracks or gets damaged. Once this happens, the grease comes out and moisture and dirt get in, causing the CV joint to wear faster and eventually fail due to lack of lubrication and corrosion.

Is it dangerous to drive with a bad CV axle?

You can drive on a damaged CV joint for a little while at least, but there’s no telling how long it will last. CV joint failure: In a worst case scenario, your CV joint will fail. Essentially, this will break the axle, leaving you with a car that won’t go anywhere.

How often do axles need to be replaced?

The good news is that CV axles in most cars are covered by the powertrain warranty, which is typically 5 years or 60,000 miles. Check your warranty brochure for details. How long do CV axles last? In many cars, if the protective boots are not broken, CV axles can last for the lifetime of the car.