Intermittent Lack Of Heat - 2013 Ford F-150

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INTERMITTENT LACK OF HEAT DUE TO ICE ACCUMULATION ON TEMPERATURE BLEND DOOR – BUILT ON OR BEFORE 11/15/2013

ISSUE:

Some 2013 F-150 vehicles built on or before 11/15/2013 with Electronic Automatic Temperature Control or Electronic Manual Temperature Control Remote Mount only, may exhibit an intermittent lack of heat.

This may be caused by ice accumulation in the Heater Core And Evaporator Core Housing affecting operation of the temperature blend door.

ACTION:

Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Is the vehicle equipped with Electronic Automatic Temperature Control or Electronic Manual Temperature Control Remote Mount? Refer to Workshop Manual (WSM), Section 412-01.
1. Yes – proceed to step 2.
2. No – this article does not apply. Refer to WSM, Section 412-00 for normal diagnostics.
Replace the Heating Ventilation Air Conditioning (HVAC) Module. Refer to WSM, Section 412-01.
Is the vehicle equipped with dual zone climate control?
1. No – repair is complete.
2. Yes – replace the light sensor. Refer to WSM, Section 417-01.

EL3Z-19980-H	Electronic Manual Temperature Control Remote Mount Module
EL3Z-19980-A	Electronic Automatic Temperature Control
EL3Z-19980-B	Electronic Automatic Temperature Control With Heated Seats
EL3Z-19980-C	Electronic Automatic Temperature Control With Ambient Lighting
DG9Z-13A018-A	Light Sensor For Dual Zone Climate Control

OPERATION	DESCRIPTION	TIME
140072A	2013 F-150: Replace The HVAC Module Includes Time To Replace The Light Sensor If Necessary (Do Not Use With Any Other Labor Operations)	0.5 Hr.

WARRANTY STATUS

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage.
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.