VW ID.4 heat pump failure in sub-zero temperatures
Volkswagen
ID.4
2021
Safe to Drive?
⚠️ Drive with Caution
Urgency Level
🟢 Low Priority
The cabin heating stops working and the instrument cluster shows a heat pump system fault in temperatures below -15°C. The VW ID.4 heat pump system can freeze up in extreme cold due to moisture accumulation in the refrigerant circuit. A software update improves the defrost management. In cases of hardware failure, the heat pump evaporator or control valve requires replacement. Pre-heating the cabin via the VW Connect app while the vehicle is still plugged in avoids range loss from heating.
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