Models equipped with RDRS have a traction control button and a traction control icon that lights when power is turned on, see Operation → Left Hand Control Switches → Left Hand Switch Module (typical) and Operation → Instruments → Indicator Lamps: With Fairing or Operation → Instruments → Indicator Lamps: Without Fairing. RDRS is REFLEX-Linked Brakes with Cornering-Enhanced ABS and additional features to enhance the riders' control of the motorcycle by adjusting brake pressure and/or powertrain output to help maintain control of the motorcycle. For more information also see Operation → REFLEX-Linked Brakes with Cornering-Enhanced ABS and www.h-d.com/rdrs.
Traction Control Modes
Rain mode: Used for surfaces with reduced traction like wet roads or gravel.
Road mode: Used for optimum riding conditions like dry paved roads.
For more information about traction control, see Operation → Traction Control.
Vehicle Hold Control (VHC)
VHC uses brake pressure to keep the motorcycle from rolling backward when it is stopped on an incline, making it easier to ride away when starting on an incline, such as a hill, a bridge or a parking ramp. The VHC holds brake pressure when activated and prevents the motorcycle from moving after the rider has released the brake controls. The system holds brake pressure until the rider actuates the throttle and clutch to pull away.
NOTE
VHC is not intended to be used as a parking brake.
Activation: The rider activates VHC by applying extra pressure to either the front brake hand lever or the rear brake foot control after the motorcycle has come to a complete stop. A VHC indicator light will illuminate to confirm that the rider has activated VHC and the ABS system will hold brake pressure after the rider releases the brake control.
Deactivation: VHC is deactivated automatically as the rider begins to pull away from a stop, or if the rider applies and releases either brake control. VHC may deactivate if rider aggressively revs the engine with clutch lever pulled in. VHC will also deactivate if the rider lowers the side stand on models with a side stand sensor (not in all markets) or shifts into neutral on models without a side stand sensor. VHC will deactivate when engine stops running. VHC will deactivate after approximately five minutes In most situations, the indicator light will flash and the VHC will release if there is no rider action. (VHC may deactivate in less than five minutes to prevent overheating if being used often on steep grades.)
Tire Pressure Monitoring System (TPMS)
TPMS alerts the rider to low tire air pressure. Maintaining proper tire air pressure is important both for safety and for tire life. The TPMS displays current front and rear tire pressure on the Boom!™ Box GTS screen (or on the speedometer on Road King® (FLHR) and Road King Special® (FLHRXS) models) and displays an indicator to alert the rider when tire pressure is low, and the pressure should be checked.