operators_manual

WARNING
For vehicles equipped with ESC (Elec-
tronic
Stability Control) do not replace
the vehicle’s steering wheel with an af-
termarket or different part number than
originally supplied. Using a different
steering wheel could cause ESC to
malfunction causing a loss of vehicle
control possibly resulting in an acci-
dent involving death or personal injury.
Whenever maintenance or repair work is
performed to the steering mechanism,
linkage, gear
, adjustment of the wheel
track, or if the steering angle sensor is
replaced or the steering wheel is changed
or re-centered, the Steering Angle Sensor
must be re-calibrated.
WARNING
If the Steering Angle Sensor is not re-
calibrated,
the Yaw Control system will
not function properly. An uncalibrated
sensor could result in a loss of control
of your vehicle which can lead to an
accident involving death or personal
injury
.
Towing Doubles Or Triples May
Reduce The Effectiveness Of
Stability Systems
ESC is designed and optimized for trucks
and for tractors that tow single trailers. If a
tractor equipped with ESC is used to power
multiple trailer combinations (known as
"doubles" or "triples") the ef
fectiveness of
the ESC system may be greatly reduced.
WARNING
Exercise extreme care when towing
doubles or triples with a vehicle equip-
ped with Electronic Stability Program.
Excessive speed and aggressive ma-
neuvers, such as sharp turns, sudden
steering inputs or abrupt lane changes
should be avoided because these ma-
neuvers could cause loss of vehicle
control possibly resulting in an acci-
dent involving death or personal injury.
Additionally, the ESC stability system’s
effectiveness may be greatly reduced if:
• The load shifts due to improper
retention, accident damage or the
inherently mobile nature of some
loads (for example, hanging meat,
live animals or partially laden
tankers).
•
The vehicle has an unusually high
or offset center of gravity (CG).
• One side of the vehicle drops off
the pavement at an angle that is
too large to be counteracted by a
reduction in speed.
• The vehicle is used to haul double
or triple trailer combinations.
• If very rapidly winding steering
inputs are inputted at high speeds.
• There are mechanical problems
with suspension leveling of the
tractor or trailer resulting in uneven
loads.
• The vehicle is maneuvering on a
high banked road creating either
additional side forces due to the
weight (mass) of the vehicle or a
deviation between expected and
actual yaw rates.
• Gusty winds are strong enough to
cause significant side forces on the
vehicle and any towed vehicles.
To maximize the effectiveness of ESC:
DRIVING - Brakes
168 Y53-6110-1A1 (01/21)
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