rear motor mechanical sealFix the Most Common VAG Problem Save Time, Money & Stress. If you own an VAG ID. 3 4 Q4 Born, youve probably encountered a well known issue: leaking seals and worn rotor bearings in the rear drive unit. These problems can cause coolant leaks, extra drivetrain noise, and even complete motor failure if left unchecked. Instead of paying thousands at the dealership or waiting weeks for repairs, you can solve it yourself by replacing the coolant seal