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SIB 12 18 13: Thermostat check engine light

Thermostat check engine light on N63 engines (2009–2014); BMW released a software update.

BMW service bulletin · NHTSA ID 10150162 · Nov 2013 · also written SI B12 18 13, B121813

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.

N63: Service Engine Soon Lamp (MIL) Is On with Fault 1D2008 Stored. Under certain low-load driving conditions at low outside ambient temperatures, the following fault may be stored in the DME with the Service Engine Soon lamp (MIL) on: Fault 1D2008 - Map thermostat, mechanical: jammed open.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 12 18 13
Also written: SI B12 18 13, B121813, 12 18 13, SIB-12-18-13, SI B121813
NHTSA ID10150162
Document IDs filed121813
TypeService bulletin
Date
Models550i, 550I Gran Turismo, 650i, 750i, 750LI
Model years2009–2014
ChassisE60, F01, F02, F06, F07, F10, F12, F13
EnginesN63
Component (NHTSA)Electrical System
Engine

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.