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Mercedes-Benz A220 2020 Technical Service Bulletin # LI42-47_P-049298 Date: 100329


ABS/TCS - Various 'Unavail Messg' And (ME CU) DTC Stored



Message in instrument cluster "Unavailable! - ESP - Service Required"



Topic number LI42.47-P-049298



Version 1



Design group 42.47 Adaptive Brake (ABR)



Date 03-29-2010



Validity Model series 204



Reason for change



Reason for block



Complaint:



The following messages appear alternately in the instrument cluster:



- "Unavailable! - ESP - Service Required"



Mercedes-Benz A220 2020 Page 333



- "Unavailable! - ABS - Service Required"



- "Tire pressure monitor unavailable"



Note:



There are no codes logged in the ESP control unit (N30-4), but there are in the engine control unit (ME CU).



Cause:



For the acceleration skid control (ASR) function, the ESP required feedback from a properly functioning engine control unit.



If there is a code logged in the ME CU, then the ASR function is not guaranteed and the ESP system switches to malfunction with the above display



in the instrument cluster.



The codes in the ESP control unit can not be read out with Xentry DAS DVD 01/2010 and all previous versions.



Remedy:



The instructions stored in the engine control unit for the code entries must be processed via Xentry DAS.

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