2010 Chevrolet HHR Owner's Manual - Page 209

Readouts #2 TIRE PRESSURES: Displays the last gauge tire pressures recorded from each of the wheel mounted tire pressure sensors. FUEL PRESSURE: Displays fuel pressure as measured by a sensor on the output of the high-pressure fuel pump. INDICATORS The indicators come on when the corresponding function is actively working to stabilize or control the vehicle. Each indicator light on the RPD display can be turned on and off using the SETUP MENU. These indicators work independently of the telltales on the instrument panel cluster. Turning the indicator on the RPD display on or off does not enable or disable the functions on the vehicle. 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. This indicator comes on whenever the vehicle StabiliTrak® is actively working. 4-43