1. Vehicle must be on incline greater
than 1% and in a forward mode.
2. Bring vehicle to a stop and depress
the service brakes then release the
service brakes to launch the
vehicle.
WARNING
Apply the vehicle service brakes or
launch the vehicle using the accelerator
pedal after Hill Start Aid releases. Fail-
ure to do so could result in unintended
vehicle movement resulting in death, se-
rious injury or damage to property.
Vehicle Facing Downhill - Reverse
Mode
1. Vehicle must be on a decline
greater than 1% and in Reverse
mode.
2. Bring vehicle to a stop and depress
the service brakes then release the
service brakes to launch the
vehicle.
WARNING
Apply the vehicle service brakes or
launch the vehicle using the accelerator
pedal after Hill Start Aid releases. Fail-
ure to do so could result in unintended
vehicle movement resulting in death, se-
rious injury or damage to property.
Clutch Abuse Protection
CAUTION
The PACCAR Automated Transmis-
sion clutch can overheat and slip with
improper use.
• DO select the lowest possible start
gear for the application. If moving
slowly is required, select 1st or R1.
• DO use the Service Brakes and let
Hill Start Aid assist you when
launching on an incline.
• Do NOT use the accelerator pedal
to hold the vehicle on an incline.
(Use Service Brakes).
• Do NOT use the accelerator pedal
to stop roll back on an incline after
Hill Start Aid disengages. (Use
Service Brakes and then relaunch).
• If the PACCAR Automated
Transmission clutch does start to
overheat, the display will show
“CA” along with a warning tone. If
“CA” is active in the gear display,
immediately discontinue the
operation that is being performed
which is causing the clutch to
overheat.
• If the driver continues abusive
operation, the system will either
open the clutch if the
accelerator pedal is not applied
or close the clutch if the
accelerator pedal is applied.
• If the abuse continues, the
system will open the clutch and
take away accelerator pedal
control for a short period of time
to allow the clutch to cool down.
Urge to Move may be
inoperable when the clutch is
overheated.
Engine Overspeed Protection
• The transmission system will
upshift if necessary to prevent
DRIVING - Features
22 Y53-1272-1B1 (08/17)
2
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