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
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.
Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.
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