RAM CHASSIS CAB 2024, Owner'S Manual

Page: 109 / 360

IDLE SHUTDOWN
This feature can be enabled so that the truck will auto-
matically shutdown when the truck has been idling for a
set period of time when the engine is at operating tem-
perature. Idle time can be set in 5 minute increments
between 5 and 60 minutes. See an authorized dealer
to enable this feature.
NOTE:
The idle shut down timer is disabled while the Power
Take Off (PTO) is active.
PROGRAMMABLE MAXIMUM
VEHICLE SPEED
This feature allows the owner to set a maximum vehicle
speed for the vehicle. The 2500 and 3500 Series maxi-
mum vehicle speed can be set between 40 mph to
87 mph (64 km/h to 140 km/h). The 4500/
5500 Series maximum vehicle speed can be set
between 40 mph to 85 mph (64 km/h to 136 km/h).
See an authorized dealer to enable this feature.
NOTE:
DO NOT set the maximum vehicle speed to a value
greater than what the vehicle tires are rated for.
OPERATING PRECAUTIONS
Avoid Overheating The Engine
The temperature of the engine coolant (antifreeze: a mix-
ture of 50% ethylene-glycol and 50% water) must not
exceed the normal range of the temperature gauge 240°F
(116°C) with a 21 psi (145 kPa) coolant pressure cap.
Usually the engine coolant (antifreeze) temperature
indicated during operation will be to the left of center in
the normal range of the gauge.
Avoid Low Coolant Temperature Operation
Continual operation at low engine coolant (antifreeze)
temperature below the normal range on the gauge
140°F (60°C) can be harmful to the engine. Low
engine coolant (antifreeze) temperature can cause
incomplete combustion which allows carbon and var-
nish to form on piston rings and injector nozzles. Also,
the unburned fuel can enter the crankcase, diluting the
lubricating oil and causing rapid wear to the engine.
COOLING SYSTEM TIPS
To reduce potential for engine and transmission over-
heating in high ambient temperature conditions, take
the following actions:
•
City Driving — When stopped, shift the transmission
into NEUTRAL and increase engine idle speed.
•
Highway Driving — Reduce your speed.
•
Up Steep Hills — Select a lower transmission gear.
•
Air Conditioning — Turn it off temporarily.
Do Not Operate The Engine With Low Oil
Pressure
When the engine is at normal operating temperature,
the minimum oil pressures required are:
Idle 700 to 800 RPM 10 psi (69 kPa)
Full speed and load 30 psi (207 kPa)
CAUTION!
If oil pressure falls to less than normal readings, shut
the engine off immediately. Failure to do so could
result in immediate and severe engine damage.
Do Not Operate The Engine With Failed
Parts
All engine failures give some warning before the parts
fail. Be on the alert for changes in performance,
sounds, and visual evidence that the engine requires
service. Some important clues are:
•
Engine misfiring or vibrating severely.
•
Sudden loss of power.
•
Unusual engine noises.
•
Fuel, oil or coolant leaks.
•
Sudden change, outside the normal operating
range, in the engine operating temperature.
•
Excessive smoke.
•
Oil pressure drop.
DIESEL PARTICULATE FILTER (DPF)
MANUAL REGENERATION —
IF EQUIPPED
On equipped Chassis Cabs, a manual regeneration can
be enable through the instrument cluster. The manual
regeneration will allow the DPF to complete a regenera-
tion, lowering the soot level without having to drive the
vehicle. The vehicle must be in PARK to access this fea-
ture, and the fuel level must be over 12.5% full. A mes-
sage displaying the time left on the regeneration will
appear on the instrument cluster, and the instrument
cluster will display the soot level
page 78.
STARTING AND OPERATING 107
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