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RecallGazette

Vehicle problems, recalls & safety intelligence

BMW 228I 2012–2017technical service bulletin

Bulletin B840416 · NHTSA communication 10146848 · issued Sep 1, 2016

Technical service bulletin
communication type
Electrical System
component
2012–2017
model years
54
vehicle entries

Official summary

SOS MALFUNCTION DISPLAYED. An SOS malfunction is seen in the Kombi. When pressing the E-Call/SOS button in the overhead console, nothing happens. Fault code B7F33C (internal ECU error) is stored in the Telematics control unit (ATM/TCB2). There are 2 known causes for this failure. They are as follows: Software file missing from the ATM/TCB2 control module Water leak at shark-fin leading to corrosion in the ATM/TCB2 control module

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.