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Fogging the windows from the inside and asymmetric cooling (driver/passenger ...

Q: What are the symptoms of Fogging the windows from the inside and asymmetric cooling (driver/passenger ... in Volkswagen Jetta?

Different temperature on both sides of the cabin. Water dripping into cabin or wet carpets. Fogging windows. Frost or ice on pipes under the hood

Q: How to fix Fogging the windows from the inside and asymmetric cooling (driver/passenger ... in Volkswagen Jetta?

Improvement/replacement of the drainage pipe and mandatory verification or replacement of the flooded Airbag module. The fault is covered by a mass service campaign (Recall 87H4 / 87F9). Regardless of where you repair, make sure that the airbag controller is not tarnished at the bottom, as the airbags may not fire in the event of an accident!

in Volkswagen Jetta (2018-2021)

Symptoms

Different temperature on both sides of the cabin
Water dripping into cabin or wet carpets
Fogging windows
Frost or ice on pipes under the hood

DTC error codes

Airbag Control Module Faults

Verifying license...

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

Najnowsza MQB / GLI

Refrigerant: R1234yf Amount (g): 460g Oil: PAG ISO 46 YF Oil (ml): b.d.ml

IV (162) Denso SES14C/Sanden 11PXE14

Refrigerant: R134a Amount (g): 500g Oil: PAG PAG 46 lub PAO 68 Oil (ml): 80ml

kompresor Denso SEU16C

Refrigerant: R134a Amount (g): 525g Oil: G 052 300 A2 PAO 68 lub PAG ISO 46 Oil (ml): 180ml

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Fogging the windows from the inside and asymmetric cooling (driver/passenger ...

Symptoms

DTC error codes

A/C Technical Specifications

Other problems in Jetta

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