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6 . 7 L C U M M I N S ® D I E S E L
DIESEL EXHAUST BRAKE (ENGINE BRAKING)
The Exhaust Brake switch is located on the switch bank below the audio system. This
switch is used to enable exhaust brake modes.
Pressing 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.
Pressing the exhaust brake switch again will enable the Smart Brake 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 press 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.
Use of aftermarket exhaust brakes is not recommended and could lead to engine
damage.
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.
190
CAUTION!
WARNING!
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