Mercedes-Benz A 220 2020 — technical service bulletin
Bulletin LI82.85-P-071394 · NHTSA communication 10177569 · issued Jun 30, 2020
Technical service bulletin
communication type
Electrical System
component
2020
model years
10
vehicle entries
Official summary
In XENTRY diagnosis, the message "MBUX multimedia system control unit is defective (hard drive, internal fault)" appears while attempting to communicate with the MBUX multimedia system (A26/17). Internal hard drive defect. Replacement of internal hard drive. The MBUX multimedia system (A26/17) hard drive is now available separately as a replacement part.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.