Peterbilt Medium Duty Truck Owner's Manual - Peterbilt Motors

CONTROLS AND DISPLAY
Engine Hours / Outside Air Temperature
Hour Meter
Snowflake
Symbol
Outside
Air
Temperature
The LCD display in the lower part of the tachometer contains
the engine hour meter and the outside air temperature
display.
The engine hour meter will display the total number of
hours the engine has been running. The maximum hours
that can be shown are “99999.9” before the meter rolls
over to zero.
The outside air temperature (OAT) will display the temperature
outside the vehicle. The temperature can be displayed
from -40° to 158° in Fahrenheit or -40° to 70°
Celsius.The display will also alert the driver when the outside
temperate approaches freezing (32°F or 0°C) by displaying
a snowflake symbol. The symbol will turn on when
the temperature drops below 34°F or 11°C and flash for
STANDARD GAUGES
the first 3 seconds, then stay on until the temperature
goes above 37°F or 28°C.
The temperature can display using Standard or Metric
units. Press the trip reset button on the Speedometer 4
times within 4 seconds. This will also change the units
shown by the Driver Information Display.
Refer to “Units of measure” on page 36 for another
method to change units.
NOTE: The OAT will come on when the door is
open and the key switch is in the accessory or
ignition position. The OAT display will turn off
when the ignition switch is turned off.
NOTE: The OAT uses a sensor (located at the
bottom of the driver’s side mirror assembly) to
measure outside air temperature only. It is not
capable of displaying the temperature of the road
surface on either the temperature display or the
snowflake icon.
NOTE: The effects of direct sunlight, or the use of
mirror heat, will increase the outside air temperature
displayed while the vehicle is stationary.
Medium Duty (R05/09) Y53-6027 – 39 –