If complaints are made that the fuel gauge of the above-mentioned vehicles is inaccurate or faulty in any way, a possible cause for this error is the fuel level sensor (fuel feed unit).
Possible contamination of the resistance of the fuel sensor on this component (the unit) can cause the malfunction.
Fault pattern:
The fuel gauge does not correctly indicate a full tank.
In order to run a check on the fuel feed unit, the rear seat has to be dismantled. It is then possible to remove the fuel feed unit from the fuel tank and to test its electrical functioning.
The float arm is also to be checked / visually checked for accurate functioning (it could be bent out of shape).
If any deviations from the norm are detected, the fuel sensor (fuel feed unit) should be replaced by the car manufacturer's modified version.
Fuel level sensor:
Spare part no.: 16.146.761.353
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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