If the radiator fan in the vehicles mentioned above does not switch off, this may be due to a software error or a faulty ECU.
Faulty control of the fan control unit can lead to premature failure. This results in the fan not switching off when the ignition is switched off.
To remedy this, the engine control unit is updated and, if necessary, the radiator fan control unit replaced. The ECU is located between the transmission and the wheel arch liner (see figure).
The modification described above is a service action (24AK) of the vehicle manufacturer, and is recorded in the vehicle's service log.
For more information, please contact your authorized dealer.
Important safety information
The 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 and 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 are for explanation and presentation of the document text and cannot be used as a basis for installation or design. All rights reserved. All rights reserved.