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The air conditioning only cools while driving

Q: How to fix The air conditioning only cools while driving in Ford MONDEO?

The symptoms included a completely incorrect adjustment of the conditions in the cabin by the automatic air conditioning - the car cooled in the winter or overheated in the summer. Diagnostics discovered that the tiny aspiration fan next to the cabin temperature sensor in the driver's knee area was severely blocked with dust. Due to the lack of air flow through the module, the EATC system recorded fluctuations in the ambient temperature in the car. Dismantling, cleaning and installing a new sensor permanently removed these problems.

in Ford MONDEO

Symptoms

Problem appears while driving

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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

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The air conditioning only cools while driving

Symptoms

A/C Technical Specifications

Other problems in MONDEO

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