What are the symptoms of Air conditioning stopped cooling / no response to AC button in Ford F-150?

Problem visible at standstill or in traffic. Different temperature on both sides of the cabin

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Air conditioning stopped cooling / no response to AC button

Q: How to fix Air conditioning stopped cooling / no response to AC button in Ford F-150?

The vehicle suddenly stopped starting (no crank/no start), there was a critical, huge current consumption from the battery when stationary, and the air conditioning clutch (A/C clutch) was engaged all the time. The diagnosed cause was damage (opening) of the diode in the air conditioning clutch, which ricocheted the control transistor (FET) in the BCMC module (Body Control Module C). The advanced repair required simultaneous replacement of the A/C clutch disc and hub as well as the entire damaged BCMC module.

in Ford F-150 (2021-2023)

Symptoms

Problem visible at standstill or in traffic
Different temperature on both sides of the cabin

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Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

Refrigerant specifications for this model are available in the catalog.

Open refrigerant database

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Air conditioning stopped cooling / no response to AC button

Symptoms

A/C Technical Specifications

Other problems in F-150

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