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Air conditioning stopped cooling / no response to AC button

Q: What are the symptoms of Air conditioning stopped cooling / no response to AC button in Hyundai Palisade?

Problem visible at standstill or in traffic. Frost or ice on pipes under the hood. Air conditioning does not turn on

Q: How to fix Air conditioning stopped cooling / no response to AC button in Hyundai Palisade?

Use the official Pulley Service Kit to rebuild the play in the clutch axle. In case of extreme seizures of the entire body - a new pump. TSB clearly tells you to diagnose the Palisade in advance - if you lightly engage the clutch with your finger when stationary. If it rubs like it's on asphalt, the factory failed the spacer castings on the front of the pump.

in Hyundai Palisade (2020-2025)

Symptoms

Problem visible at standstill or in traffic
Frost or ice on pipes under the hood
Air conditioning does not turn on

DTC error codes

Brak

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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

DTC error codes

A/C Technical Specifications

Other problems in Palisade

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