wheel torque Ram 1500 2015 Diesel Supplement

13. Air Suspension Normal Ride Height Indicator Lamp
— If Equipped
This light will illuminate when the air suspension system
is set to the Normal Ride Height setting. For further
information, refer to “Air Suspension System” in “Start-
ing And Operating”.
14. Air Suspension Off-Road 1 Indicator Lamp — If
Equipped
This light will illuminate when the air suspension system is
set to the Off-Road 1 setting. For further information, refer
to “Air Suspension System” in “Starting And Operating”.
15. Air Suspension Off-Road 2 Indicator Lamp — If
Equipped
This light will illuminate when the air suspension system
is set to the Off-Road 2 setting. For further information,
refer to “Air Suspension System” in “Starting And
Operating”.16. 4 LOW
This light alerts the driver that the vehicle is in
the four-wheel drive LOW mode. The front and
rear driveshafts are mechanically locked to-
gether forcing the front and rear wheels to
rotate at the same speed. Low range provides a greater
gear reduction ratio to provide increased torque at the
wheels.
For further information on four-wheel drive operation
and proper use, refer to “Four-Wheel Drive Operation —
If Equipped” in “Starting And Operating”.
17. Speedometer
The speedometer shows the vehicle speed in miles per
hour and/or kilometers per hour (mph/km/h).
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UNDERSTANDING YOUR INSTRUMENT PANEL 23

If the light remains lit with the engine running, your
vehicle will usually be drivable. However, see an autho-
rized dealer for service as soon as possible. If the light is
flashing when the engine is running, immediate service is
required. You may experience reduced performance, an
elevated/rough idle or engine stall and your vehicle may
require towing.
14. Alternate Trailer Height
This light will illuminate when the air suspension system
is set to the Normal Ride Height setting. For further
information, refer to “Air Suspension System” in “Start-
ing And Operating”.
15. 4 LOWThis light alerts the driver that the vehicle is in
the four-wheel drive LOW mode. The front and
rear driveshafts are mechanically locked to-
gether forcing the front and rear wheels to rotate at the same speed. Low range provides a greater
gear reduction ratio to provide increased torque at the
wheels.
For further information on four-wheel drive operation
and proper use, refer to “Four-Wheel Drive Operation —
If Equipped” in “Starting And Operating”.
16. Speedometer
The speedometer shows the vehicle speed in miles per
hour and/or kilometers per hour (mph/km/h).
17. 4WD AUTO Indicator Light — If Equipped
This light alerts the driver that the vehicle is in
the four-wheel drive auto mode, and the front
axle is engaged, but the vehicle’s power is sent
to the rear wheels. Four-wheel drive will be
automatically engaged when the vehicle senses a loss of
traction.
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UNDERSTANDING YOUR INSTRUMENT PANEL 157

WARNING!
Do not use the “TOW/HAUL” feature when driving
in icy or slippery conditions. The increased engine
braking could cause the rear wheels to slide, and the
vehicle to swing around with the possible loss of
vehicle control, which could cause an accident possi-
bly resulting in personal injury or death.
Torque Converter Clutch
A feature designed to improve fuel economy has been
included in the automatic transmission on your vehicle.
A clutch within the torque converter engages automati-
cally at calibrated speeds. This may result in a slightly
different feeling or response during normal operation in
the upper gears. When the vehicle speed drops or during
some accelerations, the clutch automatically disengages.NOTE:
•
The torque converter clutch will not engage (and 68RFE-
equipped trucks will not shift to sixth gear), until the
transmission fluid and engine coolant are warm [usually
after 1 to 3 miles (2 to 5 km) of driving]. Because the
engine speed is higher when the torque converter clutch
is not engaged, it may seem as if the transmission is not
shifting properly when cold. This is normal. Using the
Electronic Range Select (ERS) shift control, when the
transmission is sufficiently warm, will demonstrate that
the transmission is able to shift into and out of Overdrive.
•If the vehicle has not been driven for several days, the
first few seconds of operation after shifting the transmis-
sion into gear may seem sluggish. This is due to the fluid
partially draining from the torque converter into the
transmission. This condition is normal and will not
cause damage to the transmission. The torque converter
will refill within five seconds after starting the engine.
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