2009 Chrysler Aspen Problem Reports
Most Reported 2009 Chrysler Aspen Problem Reports
The thermostat may fail to close completely, causing the Check Engine Light to illuminate. This problem will prevent the engine from reaching normal operating temperature; a new thermostat should be installed.
While in automatic temperature control, if the air temperature from the vents does not change after selecting a cooler temperature, a possible cause is a failed infrared temperature sensor.