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.
WARNING!
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 EVIC/DID. 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 EVIC/DID. 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 EVIC/DID.
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.
CAUTION!
Use of aftermarket exhaust brakes is not recommended and could lead to engine
damage.
WARNING!
Do not use the exhaust brake feature when driving in icy or slippery conditions as
the increased engine braking can cause the rear wheels to slide and the vehicle to
swing around with the possible loss of vehicle control, which may cause a collision
possibly resulting in personal injury or death.
6 . 7 L C U M M I N S D I E S E L
147
Summary of Contents for Chassis CAB 4500 2016
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