Sensotronic Brake Control(R) - Implausible Service Life Results

Date: October 3, 2012

Order No.: P-B-42.46/120

Group: 42

SUBJECT: MY-All, Models 199, 211, 219, 230

Operating Time Check of Sensotronic Brake Control (SBC) When Using XENTRY Diagnostics Version 7/2012

If XENTRY Diagnostics versions 07/2012 and 09/2012 are used, the service life check on the SBC hydraulic unit (A7/3) and traction system hydraulic unit (A7/3) may give an implausible result.

This manifests itself as follows:

^ The message "Service Brake - Service Required" appears in white lettering in the display of the instrument cluster (A1).

^ In the SBC control unit (A7/3n1), the fault code C249F "Check service life of component A7/3 (SBC hydraulic unit)" or C2498 "Operating time of component A7/3 (traction system hydraulic unit) has been exceed" is pending and stored.

^ The service life check to be performed in this case yields the result "Component A7/3 (SBC hydraulic unit) and (traction system hydraulic unit) is OK".

^ After completion of diagnosis and switching ignition OFF/ON or after a short driving time, the message "Service Brake - Service Required" reappears in white lettering in the instrument cluster (A1), and the fault code C249F or C2498 is pending and stored in the SBC control unit (A7/3n1).

To fix, install the following Xentry Diagnostics add-ons:

^ for XENTRY Diagnostics version 07/2012: add-on 2484

^ for XENTRY Diagnostics version 09/2012: add-on 2483