The reset procedure for the Brother MFC-8860DN is as follows:
- Open the TONER door (the door that gives you access to the toner cartridge).
- Press the ‘back’ button.
- Press *00.
- Ignore the query about the drum.
- Close the door.
All going to plan your toner counter should now be reset.
Note: This may work for some of the other models that take the TN3185 toner e.g. MFC-8460N MFC8460N.