252 OPERATION DPF INHIBIT ROAD SPEED LIMITING (RSL) The DPF Smart Switch can be locked into the DOWN (or Inhibit Regen) position by the driver (if equipped). If the DPF Smart Switch remains in the locked position, the following vehicle speed limiting will occur: 1 Vehicle Moving. If vehicle is moving with the DPF Smart Switch in the locked (DOWN) position, the vehicle speed will decrease down to 16 kph (10 mph) below the current speed until the driver releases the switch back to the neutral (MIDDLE) position. 2 Vehicle Stationary and then Moving. If the vehicle is stationary with the DPF Smart Switch in the locked (DOWN) position and the driver then begins to move the truck, the vehicle speed will be limited to 16 kph (10 mph) until the driver releases the switch back to the neutral (MIDDLE) position.
Refer to the Exhaust Aftertreatment System Information sun visor label for additional Aftertreatment DPF information.
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