Diesel Exhaust Brake (Engine Braking); Engine Idling - RAM CHASSIS CAB 3500 2017 User Manual

Engine Idling

Avoid prolonged engine idling. Long periods of idling may be harmful to your engine
because combustion chamber temperatures can drop so low that the fuel may not
burn completely.
Incomplete combustion allows carbon and varnish to form on piston rings, engine
valves, and injector nozzles. Also, the unburned fuel can enter the crankcase, diluting
the oil and causing rapid wear to the engine.
If the engine is allowed to idle, under some conditions the idle speed may increase
to 900 RPM then return to normal idle speed. This is normal operation.
Remember to disconnect the cord before driving. Damage to the 110–115 volt
electrical cord could cause electrocution.

DIESEL EXHAUST BRAKE (ENGINE BRAKING)

The Exhaust Brake switch is located on the switch bank below the HVAC controls
located in the center stack. This switch is used to enable exhaust brake modes.
Pushing the exhaust brake switch once will enable full strength exhaust brake mode,
indicated by a yellow icon in the instrument cluster. This mode applies full exhaust
braking when the accelerator pedal is released. This is most useful for slowing the
vehicle.
Pushing the exhaust brake switch again will enable the Smart Brake (Auto) feature,
indicated by a green icon in the instrument cluster. This feature is intended to
maintain the vehicle speed present when the accelerator pedal is released. However,
when the brakes are applied, full exhaust braking is still enabled to slow the vehicle.
A third push of the brake switch will turn the exhaust brake off, and will extinguish
the exhaust brake icon in the instrument cluster.
NOTE:
In general, higher engine speeds result in higher exhaust braking force. For optimum
braking power, it is recommended to use the exhaust brake while in TOW/HAUL mode.
Use of aftermarket exhaust brakes is not recommended and could lead to engine
damage.
6 . 7 L C U M M I N S D I E S E L
WARNING!
CAUTION!
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