A/C, Instruments - Outside Air Temp Reading Inaccurate
TSB 11-8-1008/18/11
OUTSIDE AIR TEMPERATURE READING
INACCURATE AND/OR SLOW TO UPDATE IN WARM
AMBIENT TEMPERATURES
FORD:
2011 Edge
LINCOLN:
2011 MKX
This article supersedes TSB 10-23-2 to update the Service Procedure.
ISSUE
Some 2011 Edge and MKX vehicles built on or before 9/1/2010 may experience the outside air temperature reading inaccurate and/or slow to update in actual ambient temperatures 21 °C (70 °F) or above. Vehicles equipped with dual automatic temperature control (DATC) system may also experience a lack of A/C cooling at startup. This typically occurs when the outside air temperature sensor (OAT) is 10-15 degrees or more lower than the actual ambient temperature during starting up.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
Reprogram the heating ventilation air conditioning (HVAC) module to the latest calibration using IDS release 74.03 or higher. This new calibration is not included in the VCM 2011.7 DVD. Calibration files may also be obtained at the website.
NOTE
AFTER REPROGRAMMING THE OAT DISPLAY WILL NEED A FEW MINUTES, INITIALLY, OF CONSTANT DRIVING TO OBTAIN THE CURRENT OUTSIDE AIR TEMPERATURE.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
110810A 2011 Edge And MKX: 0.3 Hr.
Reprogram The HVAC
Module (Do Not Use With
Any Other Labor
Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
19980 04
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