green. Active engine braking can be
overridden when the operator (or a truck
feature, such as Adaptive Cruise Control
(ACC)) provides acceleration. In these
cases, the engine brake indicator will turn
white (enabled but not active) while
acceleration is being applied.
Hill Start Aid (HSA)
Disabled Warning Light
This warning means that the Hill Start Aid
(HSA) feature is disabled. This may be
from use of the Hill Start Aid Disable switch
(see Hill Start Aid Disable Switch) or a fault
with the HSA feature.
Transmission Oil
Temperature Gauge
4
The optional Transmission Temperature
Gauge indicates the temperature of the oil
in the transmission. Watch this gauge to
know when the transmission is
overheating. If so, have it checked by an
authorized service representative.
Clutch Temperature Gauge
The clutch temperature gauge monitors the
temperature of the clutch, which increases
during clutch engagement and
disengagement:
The gauge is located on the digital display
and reacts to the indicated temperature. If
the clutch temperature gauge has not been
configured to show normally, it may appear
when clutch temperature enters the
elevated or overheated range.
The Clutch Temperature Gauge has three
states:
•
No glow — normal operating
range.
• White glow — clutch temperature
elevated.
Reduce clutch use to prevent
overheating (see Proper Clutch
Use on page 36). CA may appear
in the transmission gear display.
• Red glow — Clutch overheated:
discontinue vehicle operation (see
High Clutch Temperature on page
24).
High Clutch Temperature
1. Slow down, carefully.
4
Configuration depends on model.
INDICATIONS - Hill Start Aid (HSA) Disabled Warning Light
24 Y53-1349-1A1 (02/2022)
3
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