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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 Opel Zafira-e?

No cold air from vents. A/C does not react to control panel settings

Q: How to fix Air conditioning stopped cooling / no response to AC button in Opel Zafira-e?

Uploading updated software (ECU update) provided by the manufacturer or possibly replacing the electric compressor with a defect-free one. Massive manufacturing defect of the Stellantis group - global recall marked with the codes KGS, MF9, JTF.

in Opel Zafira-e (2019-2022)

Symptoms

No cold air from vents
A/C does not react to control panel settings

DTC error codes

KGS

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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

Life (K0)

Refrigerant: R1234yf Amount (g): 450g Oil: PAG 46 YF PAO 68 AA1 lub PAG ISO 46 YF b.d. Oil (ml): b.d.ml

C (P12)

Refrigerant: R134a Amount (g): 630g Oil: PAG PAO 68 lub PAG ISO 46 Oil (ml): 125ml

C (P12) z silnik: A18XER/A18XFR/A18XEL

Refrigerant: R134a Amount (g): 600g Oil: PAG PAO 68 lub PAG ISO 46 Oil (ml): 125ml

See full specification

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