Driver Controls Powertrain Controls Aftertreatment System Regen Switches Axle Switches Axle switch controls are listed here in alphabetical order. NOTE: See Chapter 16 for detailed information about axle switch functions. NOTE: See Chapter 11 for detailed information about the operation of the regeneration (regen) switches and the aftertreatment system (ATS). Differential Lock Switch The regen request switch is used to initiate a parked regen. See Fig. 4.8 . Some vehicles may be equipped with an optional regen request/inhibit switch; see Fig. 4.9 . To request a parked regen, press the upper half of the switch.
To stop a regen in progress or prevent the start of a regen, press the lower half of the switch. Regen will not occur until the switch is no longer active. 07/22/2011 f545803 Fig. 4.10, Forward Drive Axle Differential Lock Switch 08/02/2011 f610852a Fig. 4.8, Regen Request Switch 07/22/2011 f545804 Fig. 4.11, Rear Drive Axle Differential Lock Switch The differential lock switch, as shown in Fig. 4.10 or Fig. 4.11 , provides maximum traction for slippery conditions by forcing the wheels on each drive axle governed by the switch to rotate together. Engage- ment can be at any speed, provided the wheels are not slipping or spinning. 11/01/2006 f610852 Fig. 4.9, Regen Request/Inhibit Switch 4.6