In the above vehicle, the multi-function control unit and/or or the signal horn may malfunction. One possible cause in some vehicles may be a defect in the wiring harness of the brake pedal switch that can scrub at the steering shaft due to unfavourable positioning.
As a corrective action, the wiring harness should be checked, and damaged cable insulations should be repaired with a repair kit. In addition, pull a suitable protective cover onto the wiring and fasten the harness again.
If necessary, the harness must be replaced, although this is associated with a significant amount of work.
Finally perform a functional test.
Important safety notice
The following technical information and tips for practical use have been set up by HELLA in order to offer professional support to automotive workshops in their daily work. The information available here on this website is only to be used by appropriately trained specialist staff.
The 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, figures 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.
Not helpful at all
Very helpful