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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 BMW Seria 8?

Dark sludge or metal shavings in system. Air conditioning does not turn on

Q: How to fix Air conditioning stopped cooling / no response to AC button in BMW Seria 8?

Flush the Rinse Procedure system with nitrogen by machine. Replacement of the compressor, valve, condenser. N63 S63 masks are packed in such a way that the temperature breaks down the oil bases in the compressors and they start leaking metal. Before you change the pump in a V8 - you drain the oil from the lines on the table and see if it shines with glitter to know how many thousand you will bill for.

in BMW Seria 8 (2013-2022)

Symptoms

Dark sludge or metal shavings in system
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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