What are the symptoms of Unusual noise and metallic grinding when A/C is on in Ford Bronco Sport?

No cold air from vents. Unusual noises when A/C is turned on. Hissing from vents. Water dripping into cabin or wet carpets

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Unusual noise and metallic grinding when A/C is on

Q: How to fix Unusual noise and metallic grinding when A/C is on in Ford Bronco Sport?

Drivers reported hissing from under the hood and the blowing of warm air, and the air conditioning completely failed. A leak of coolant from the engine cooling system directly onto the air conditioning compressor was diagnosed. Excessive moisture led to damage to the compressor clutch. The solution to the problem was to eliminate the coolant leak and replace the damaged compressor clutch.

in Ford Bronco Sport (2021-2023)

Symptoms

No cold air from vents
Unusual noises when A/C is turned on
Hissing from vents
Water dripping into cabin or wet carpets

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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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