Chevrolet HHR 2010 Owner's Manual page 202

Region B Readout Displays
Press the RPD knob to highlight Region B. The
information displayed can be changed by turning the
RPD knob either clockwise or counterclockwise.
Press the RPD knob again, to store the selection.
The selection will also be stored after a few seconds
of no activity. Available modes are:
Readouts #1
SHIFT LIGHTS/GEAR INDICATION: The shift lights
provide visual identification of engine speed for a
transmission gear. Shift light minimum and maximum
RPM settings can be viewed and configured in the
SETUP screen. The gear indication on manual
transmission vehicles is calculated by the engine
control module. The gear is only displayed when
enough torque is available to determine the selected
forward gear.
Readouts #2
TIRE PRESSURES: Displays the last gage tire
pressures recorded from each of the wheel mounted
tire pressure sensors.
4-42
Readouts #3
BAROMETER: Displays ambient air pressure as
measured by the engine's ambient pressure sensor.
OUTSIDE TEMPERATURE: Displays ambient
temperature as measured by an outside air temperature
sensor.
BATTERY VOLTAGE: Displays the vehicle's battery
voltage.
Readouts #4
COOLANT TEMPERATURE: Displays engine coolant
temperature as measured by a coolant temperature
sensor.
INLET AIR TEMPERATURE: Displays the
instantaneous temperature of the air at the inlet to
the induction system.
FUEL PRESSURE: Displays fuel pressure as
measured by a sensor on the output of the
high-pressure fuel pump.