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A/C cooling is weak and gradually loses performance

Q: What are the symptoms of A/C cooling is weak and gradually loses performance in Hyundai Starsze modele ICE?

Clicking or rattling behind dashboard. Air conditioning does not turn on

Q: How to fix A/C cooling is weak and gradually loses performance in Hyundai Starsze modele ICE?

Unscrew the central clutch disc bolt and remove 1 or 2 shims to reduce the air gap to the factory level of approximately 0.5 mm. Great old school trick. Unscrew 1 screw on the clutch, remove the front disc and throw away the small round washer. The disc sits closer to the magnet and the compressor gets a second life for zero zlotys.

in Hyundai Starsze modele ICE

Symptoms

Clicking or rattling behind dashboard
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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