If a full discharge of the battery after long periods of disuse is determined in the vehicles listed above, the cause may be a defect in the fuel filter heater.
A contact problem results in the battery continuously energising the fuel filter heater. Long periods of disuse may therefore discharge the battery.
The connections in the engine compartment may also scorch, triggering an engine fire in the worst-case scenario.
The vehicle manufacturer has already addressed the issue and notified owners of affected models. For various reasons, however, it must be assumed that not all vehicles have been checked or modified.
The fuel filter heater is replaced at specialist garages.
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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