FORD 2015 F-550 v.1 - Manual (Page 172)

AdvanceTrac with RSC Features
(Single rear wheels only)
Enabled Enabled Enabled Not illuminated Button pressed
again after
deactivation
Disabled Disabled Disabled Illuminated Transfer case
switched to
4WD Low 3
1 Electronic stability control has reduced sensitivity compared to fully active system.
2 Lamp light starts blinking for four seconds after entering the press and hold state.
3 Engaging 4WD Low locked automatically disables roll stability control, electronic stability
control and the traction control system.
169
Super Duty (), enUSA
Stability Control