On the above mentioned vehicles it may occur that
the heating system/ air-conditioning system only produces cold air for a few minutes after starting the engine. The fault mostly occurs if the exterior temperature is below 6°C and the vehicle is started again within 2 hours (of parking it).
A "hardware bug" may be the cause.
As a result the ECC detects an excessively high exterior temperature and tries to cool instead of heat.
To rectify the problem the triple info display should be replaced with a modified variant and new software installed.
Vehicles from chassis no. W0L0XCF0866074319
already have modified hardware and software from the factory.
Important safety note
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