BMW 750I 2016–2020 — technical service bulletin
Bulletin B111918 · NHTSA communication 10172488 · issued Feb 1, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2020
model years
15
vehicle entries
Official summary
DELIVERY STOP: N63R AND N63M ENGINE - CHECK HIGH TEMPERATURE COOLANT SYSTEM FOR CONTAMINATION. The engine oil to coolant heat exchanger may have an internal leak resulting in engine oil contamination of the high temperature cooling system.
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.