Below is a list of the Function keys and their assignments applicable to this model. F0. Lights on/off (if fitted) F1. Sound on/off F2. Horn 1 – double tone F3. Horn 2 – alternative double tone F4. Horn 3 – single tone F5. Buffering up to a train F6. Coupling up F7. Buffer clash on wagons F8. Flange squeel F9. Gaurds whistle F10. Carriage door slam F11. Wheel/track ‘groan’ F12. Shunting mode. Press once the loco goes slowly press again and you are back to normal control. F13. Acceleration/Deceleration. Press once to over ride, press again to cancel. F14. Aux 1 F15. Aux 2 F16. Aux 3 F17. Aux 4 F18. Aux 5 F19. Aux 6