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SIB 51 19 21: Trunk lid fault codes

Trunk lid fault codes on BMW G30/G31/F90 models (2017–2021); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10205089 · Nov 2021 · also written SI B51 19 21, B511921

What it covers

A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.

A faulty componnent inside the trunk spindle drive.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 51 19 21
Also written: SI B51 19 21, B511921, 51 19 21, SIB-51-19-21, SI B511921
NHTSA ID10205089
Document IDs filedB511921
TypeService bulletin
Date
Models530e, 530i, 540d, 540i, M5, M550i
Model years2017–2021
ChassisG30, G31, F90
EnginesB46/B48, B57, B58, N63, S63
Component (NHTSA)Equipment

Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.

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Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.