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SIB 11 21 16: Auto start-stop reduced power

Auto start-stop reduced power on BMW F15 models (2015–2017); BMW gives an inspection and repair procedure.

BMW service bulletin · NHTSA ID 10146529 · Feb 2017 · also written SI B11 21 16, B112116

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.

CCM: ""start/stop failed"": Loss of power .

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 11 21 16
Also written: SI B11 21 16, B112116, 11 21 16, SIB-11-21-16, SI B112116
NHTSA ID10146733, 10146529 (revisions)
Document IDs filedB112116
TypeService bulletin
Date (first filed Dec 2016)
ModelsX5
Model years2015–2017
ChassisF15
EnginesN20, N55, N57, N63
Component (NHTSA)Engine
Engine And Engine Cooling
Engine And Engine Cooling › Exhaust System

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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  • SIB 11 01 17 N63T and S63T engine N63T and S63T engine on N63 engines (2012–2017); the fix is replacing the affected part. Service bulletin · Nov 2017
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  • SIB 01 11 25 EGR valve warranty extension EGR valve warranty extension on BMW F01/F02/F10/F15 models (2014–2018); BMW extended the warranty on this part for eligible cars. Warranty extension · Sep 2026

Before you pay: check your VIN for recalls

Some failures are covered by a safety recall or a warranty extension. Our free recall check lists NHTSA recalls for your car's model and year.

Check recalls by VIN →

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.

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