Engine Cooling System Messages
ENGINE HOT A/C (AIR CONDITIONING) OFF
This message displays when the engine coolant becomes hotter than the normal operating temperature.
See Engine Coolant Temperature Gauge. To avoid added strain on a hot engine, the air conditioning compressor automatically turns off. When the coolant temperature returns to normal, the air conditioning compressor turns back on.
You can continue to drive the vehicle.
If this message continues to appear, have the system repaired by your dealer as soon as possible to avoid damage to the engine.
ENGINE OVERHEATED IDLE ENGINE
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 soon as possible.
Do not increase the engine
speed above normal idling speed.
See Engine Overheating for more information.
This message displays when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. If the message does not clear in a few minutes or if the overheat light stays on, shut the vehicle off and have it serviced before driving again.
See Engine Coolant Temperature Warning Light.
See Overheated Engine Protection Operating Mode for information on driving to a safe place in an emergency.
See also:
Engine Oil Life System
The engine oil life system calculates
engine oil life based on vehicle use
and displays the CHANGE ENGINE
OIL SOON message when it is time
to change the engine oil and filter.
The oil life sy ...
Clock (Digital Clock)
The infotainment system controls are used to access the time and date
settings through the menu system. See Operation for information about how to
use the menu system. See the separate navigation ma ...
Trailer Towing
(Except CTS-V and
Coupe)
Before pulling a trailer, there are
three important considerations that
have to do with weight:
- The weight of the trailer.
- The weight of the trailer tongue.
- The total weight on the vehicl ...






