Hello,
There are no statue of limitations on warrants, this includes bench warrants. When ever a warrant is issued it will stay active until either you one deal with the issue or two are arrested.
I would strongly advise you to get into contact with the sheriffs office where the warrant was issued and try to get this resolved.
I wish you the best.
Walter
Legal C&onsultant
Specializing in all aspects of law including Family, Real Estate, Employment and Consumer Protection