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Air conditioning stopped cooling / no response to AC button

Q: How to fix Air conditioning stopped cooling / no response to AC button in BMW Seria 7?

Checking, replacing the cut off harness and cable ties that were imposed during the service action, separating the cables from the frame. ATTENTION!!! When you do inspection and filters in the latest G60/G70, watch where you drill the screws! 60,000 cars called for service because mechanics burst into flames from A/C cables after changing a regular pollen filter.

in BMW Seria 7 (2022-2025)

Symptoms

Frost or ice on pipes under the hood

DTC error codes

80116A, 80116B (Short to Ground/Plus)

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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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Air conditioning stopped cooling / no response to AC button

Symptoms

DTC error codes

A/C Technical Specifications

Other problems in Seria 7

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