BMW 530I 2016–2018 — technical service bulletin

Bulletin B612117 · NHTSA communication 10149252 · issued May 1, 2017

Technical service bulletin

communication type

Exterior Lighting

component

2016–2018

model years

vehicle entries

Official summary

HAZARD WARNING SWITCH FLICKERS AFTER ENGINE START. Hazard warning switch flickers after engine start. Faulty communication between hazard warning switch and Body Domain Controller (BDC).

Vehicles covered

2017 BMW 530I
2017 BMW 540I
2017 BMW 550I
2016 BMW 750LI
2018 BMW M550I
2017 BMW M760LI

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.