Failure of the function of the left headlight
In case of complaints about the failure of the function of the left headlight on the above mentioned models, the cause may be a damaged / faulty wiring harness in the area of the audio unit. The insulation on the harness or the insulation on several cables may be damaged due to "chaffing" on the housing of the audio unit if the wiring harness is routed incorrectly.
As a consequence the function of the multifunction control unit may be degraded or there may a short circuit.
First check the fuse for correct function, then remove the audio unit and check the wiring harness / wiring insulation for damage in this area, repair or renew if necessary, and route correctly.
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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