BMW 540I 2016–2018 — technical service bulletin

Bulletin B170118 · NHTSA communication 10138384 · issued Apr 1, 2018

Technical service bulletin

communication type

Engine and Engine Cooling

component

2016–2018

model years

vehicle entries

Official summary

HEATER HOSE IS CONTACTING THE STEERING SHAFT: The customer may complain of a coolant leak from the front of the vehicle, or a noise when turning the steering wheel.

Vehicles covered

2017 BMW 540I
2018 BMW 540I
2018 BMW 640I
2016 BMW 740LI
2017 BMW 740LI
2018 BMW 740LI

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.