Alfa Romeo Tonale 2023–2024 — technical service bulletin
Bulletin S2308000099 REV.A · NHTSA communication 11000996 · issued May 17, 2024
Technical service bulletin
communication type
Electrical System
component
2023–2024
model years
4
vehicle entries
Official summary
Body Control Module (BCM) Sets Diagnostic Trouble Code (DTC) U0423-87 Invalid Data Received from TBM (Telematic Box Module) - Missing Message Erroneously
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.