can a beneficiary charge the estate storages fees years after death?

Mom's l late husband's estate is under NJ law of intestecy b/c even though my mom's late husband said he had a Will we could not find it. His son decided 22 months after his dad's death to charge the estate $4400 in vehicle storage fee. No such storage fees were ever agreed upon, announced to estate until 22 mos. passed, nor did any agreement exist between him & his father. Can he come out of nowhere & do that? I would think at most he could only charge upon notice to estate moving forward from the date of when vehicles must get removed or storages fees will start. Said son, POA, also took $60k from his dad's bank and put it into a personal acct in his & his sister's names a week before he died & will not willingly submit it to the estate for proper admin. (Left 1 sibling out).