BMW 530E 2017–2020 — technical service bulletin
Bulletin B110819 · NHTSA communication 10170568 · issued Dec 1, 2019
Technical service bulletin
communication type
Engine
component
2017–2020
model years
20
vehicle entries
Official summary
B57 DIESEL ENGINE - CHECK CONTROL MESSAGE OIL LEVEL TOO HIGH. Check Control Message (CCM) "Engine oil level too high" is displayed. Fuel dilution into the engine oil due to the diesel particulate filter (DPF) regeneration strategy.
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.