BMW M4 2015–2016 — technical service bulletin
Bulletin B513615 · NHTSA communication 10147776 · issued Oct 1, 2015
Technical service bulletin
communication type
Structure
component
2015–2016
model years
2
vehicle entries
Official summary
"The left rear light PVC seam may not have been applied properly and may be leaking. AFFECTED VEHICLES This Service Action involves F82 (M4 Coupe) models produced in August 2015. Vehicles which require this Service Action to be completed will show it as ""Open"" when checked either in the ""Service Menu"" of DCSnet (Dealer Communication System) or with the Key Reader. The PVC seam was not applied correctly and can cause water leaks."
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.