Hi IRL,

Yes, modules do need to be retuned occasionally.

You may send in the module alone if you like, but it is always recommended to send the complete system in for a check up if the system is older.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician