The differential axle seal leaks ?

Here are a number of guides that help with this by giving good detail on how to replace the axle seal and bearings if that is needed as well:

https://www.2carpros.com/articles/rear-axle-seal-replacement

https://www.2carpros.com/articles/rear-axle-seal-replacement

Also, below is the process from the manual that will help replace the axle.

Please let us know if you have other questions. Thanks