What are the symptoms of A/C cooling is weak and gradually loses performance in BMW Seria 6?

Irregular A/C operation. No blowing from vents. Slow loss of refrigerant

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A/C cooling is weak and gradually loses performance

Q: How to fix A/C cooling is weak and gradually loses performance in BMW Seria 6?

Replacement with redesigned (updated to thicker bottom revision) OEM number 64509391489. Massive failure of the pre-facelift F10. The factory invented the condenser walls so thin that the gas penetrates almost through the pressure alone with the salt. Install revision produced from 2014 onwards and hello songs.

in BMW Seria 6 (2013-2013)

Symptoms

Irregular A/C operation
No blowing from vents
Slow loss of refrigerant

DTC error codes

Low pressure

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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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A/C cooling is weak and gradually loses performance

Symptoms

DTC error codes

A/C Technical Specifications

Other problems in Seria 6

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