Ram Trucks 2015 Chassis Cab Commercial - Diesel Supplement - Manual (Page 226)

Idle-Up Feature — Automatic Transmission Only
The driver-controlled high idle speed feature will help
increase cylinder temperatures and provide additional
cab heat, however, excessive idling may still cause the
exhaust aftertreatment system to not properly regenerate.
Extended periods of idle time should be avoided.
The Idle-Up feature uses the speed control switches to
increase engine idle speed and quickly warm the vehi-
cle’s interior.
1. With the transmission in PARK, the parking brake
applied, and the engine running, press the speed
control switch to the ON position, then press the SET
switch.
2. The engine RPM will go up to 1100 RPM. To increase
the RPM, press and hold the ACCEL/RESUME switch
and the idle speed will increase to approximately
1500 RPM. To decrease the RPM, press and hold the
DECEL switch and the idle speed will decrease to
approximately 1100 RPM.
3. To cancel the Idle–Up feature, either press the CAN-
CEL switch, press the ON/OFF switch, or press the
brake pedal.
Stopping The Engine
Idle the engine a few minutes before routine shutdown.
After full load operation, idle the engine three to five
minutes before shutting it down. This idle period will
allow the lubricating oil and coolant to carry excess heat
away from the combustion chamber, bearings, internal
components, and turbocharger. This is especially impor-
tant for turbocharged, charge air-cooled engines.
224 STARTING AND OPERATING