If complaints are made regarding the above-mentioned vehicles that the battery runs down when the car is stationary for longer periods of time, this problem could be the result of a defective fuel filter heating unit.
A faulty contact would mean that the battery is permanently supplying the fuel filter heating system with power. This results in a discharging of the battery when the vehicle is kept stationary for a longer stretch of time.
It is also possible that connections in the engine compartment could begin to smoulder, a situation which could in the worst case lead to a fire breaking out in the engine.
The vehicle manufacturer has already addressed the issue and notified owners of all the models concerned. For various reasons, however, it must be assumed that not all vehicles have been checked or modified.
Fuel filter heaters can be replaced in 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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