Medium priority 85% confidence

No airflow/cabin fan not working and irregular airflow strength

Q: What are the symptoms of No airflow/cabin fan not working and irregular airflow strength in Volkswagen Suran?

No cold air from vents. Irregular A/C operation. No blowing from vents. Frost or ice on pipes under the hood

Q: How to fix No airflow/cabin fan not working and irregular airflow strength in Volkswagen Suran?

Manual expansion valve replacement. A car that has not been driven for 2 years means the death of every O-ring and 90% failure of the block valve. You fill it up - it cools down nicely, you let go of the revs = warm air. TXV jammed due to lack of lubrication circuit.

in Volkswagen Suran

Symptoms

No cold air from vents
Irregular A/C operation
No blowing from vents
Frost or ice on pipes under the hood

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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