On the above vehicle models, the warning light for the antiblock system may illuminate sporadically. At the same time, error code P0504 is issued in the error memory of the engine control unit.
In some cases, the fault light for the hill holder may also illuminate.
The fault may be caused by the pin contacts in the brake-pedal switch locking erroneously.
In such cases, the plug connection and cable on the brake-pedal switch must be checked, and repaired if necessary.
Once this is complete, clear the error memory and perform a test run
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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