Air Quality Sensor
For vehicles with an air quality sensor, the climate control system adjusts to limit some exhaust fumes from being pulled inside your vehicle.
Press the AUTO button on the climate control to activate the air quality sensor. The recirculation indicator light comes on when poor quality air is detected. The air quality sensor will not maintain recirculation for an extended period to prevent the air inside the vehicle from becoming too dry or stuffy.
Under certain conditions, the air
quality sensor will not activate,
such as during cold weather or
with extreme odors. Press to
activate recirculation.
The air quality sensor system does not protect against carbon monoxide (CO), which you cannot see or smell. See Engine Exhaust.
See also:
Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge and a yellow fuel cap can use either
unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85).
See Fuel E85 (85% Ethanol). For all other vehicles, u ...
Engine Cooling System Messages
Notice: If you drive the vehicle while the engine is overheating, severe engine
damage may occur. If an overheat warning appears on the instrument panel cluster
and/or DIC, stop the vehicle as soo ...
Not quite midsize
Like most mid-size entry-level luxury cars, the CTS has a fairly restrictive
cabin. Although I can live with that, the hard front and very tight rear seats
put a damper on the experience. Sure, it ...