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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 Ford MONDEO III (B5Y)?

Different temperature on both sides of the cabin. Air conditioning does not turn on

Q: How to fix Air conditioning stopped cooling / no response to AC button in Ford MONDEO III (B5Y)?

The problem results from a blown fuse F82 (7.5A) located behind the passenger glove compartment. This fuse jointly powers the air conditioning relay coil and the heated washer nozzles. This occurs due to an internal short circuit (or faulty insulation) in the nozzles themselves. The repair involves physically disconnecting the plugs from the washer nozzles under the hood sound insulation (to eliminate a short circuit), and then replacing fuse F82.

in Ford MONDEO III (B5Y) (2000-2007)

Symptoms

Different temperature on both sides of the cabin
Air conditioning does not turn on

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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: R1234yf Amount (g): 570g Oil: WSS-M2C300-A2 PAO 68 AA1 lub PAG ISO 46 YF Oil (ml): 150ml

V - (CNG)

Refrigerant: R134a Amount (g): 550-600g Oil: PAG 46 Oil (ml): 130 - 160ml

V 1,0 i EcoBoost

Refrigerant: R134a Amount (g): 530g Oil: WSH-M1C231-B PAO 68 lub PAG ISO 46 Oil (ml): 145ml

See full specification

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Air conditioning stopped cooling / no response to AC button

Symptoms

A/C Technical Specifications

Other problems in MONDEO III (B5Y)

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