Mercedes Benz : Mercedes-Benz A220 2020 Technical Service Bulletin # LI80-57

Antitheft System - DAS3 Diagnosis/Replacement Info.

DIAGNOSIS AND REPLACEMENT OF DAS3 COMPONENTS (KEY, EIS, ESL)

Topic number LI80.57-P-046935

Version 2

Design group 80.57 Drive authorization systems (DAS)

Date 10-28-2009

Validity All Model 164, 171, 203, 204, 207, 209, 211, 212, 219

and 251 Vehicles

Reason for change Added applicable models / Supersedes DTB SB-80.57/24c

Reason for block

Complaint:

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Diagnostic procedures for the DAS3 Drive Authorization System have been revised for models listed above. Please proceed as follows when

diagnosing systems conditions.

Cause:

N/A

Remedy:

Select Control units -> Body -> EIS -> "Guided transmitter key check" or "Guided drive authorization system check"

Select the respective guided check. A guided diagnosis follows which is used to pinpoint the component that is causing the condition. Do not replace

any component before performing this diagnosis. Always perform the diagnosis in its entirety until SDS identifies the component to be replaced. At

the end of the test steps, the user will be prompted to print the results. When submitting a claim, copies of this printout and a quick test must

accompany the parts. The warranty claim may be debited a handling charge if the printout and the quick test do not accompany the parts.

Applied diagnostic steps are stored in the EIS (Electronic Ignition Switch) and ESL (Electric Steering Lock) components. The diagnostic steps

utilized by the dealer will be electronically verified by the QEC to determine if the control unit performed the diagnostic procedure. If it is

determined that a complete diagnosis was not performed, the warranty claim may be debited a handling charge.

Note:

Both vehicle keys are required to ensure a proper diagnosis. Please be sure that both keys will be available when the repair appointment is made. If

this is not possible, ensure you have the correct diagnosis path when conducting diagnosis in SDS.

Symptoms

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