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SIB 16 03 16: Exhaust noise

Exhaust noise on N57 engines (2014–2016); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10146785 · Nov 2016 · also written SI B16 03 16, B160316

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.

BUZZING OR CLICKING NOISE FROM THE SCR TRANSFER PUMP. There is a buzzing or clicking noise coming from under the car that can be heard from the passenger compartment when the engine is at idle.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 16 03 16
Also written: SI B16 03 16, B160316, 16 03 16, SIB-16-03-16, SI B160316
NHTSA ID10146785
Document IDs filedB160316
TypeService bulletin
Date
Models535d
Model years2014–2016
ChassisF10
EnginesN57
Component (NHTSA)Engine And Engine Cooling

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.